MSC.ADAMS--the most powerful, the most widely used mechanical system dynamics simulation tool

MSC.ADAMS software has rapidly developed into CAE's most widely used mechanical system dynamics simulation tool due to its leading "functional digital prototyping" technology, which occupies the vast majority of the market in the world CAE analysis field Share, is widely used in aerospace, aviation, automobile, railway, weapons, ships, engineering equipment and heavy machinery and other industries, many large international companies, enterprises are using MSC.ADAMS software as its product development process of mechanical system dynamics Performance simulation platform. With the powerful modeling capabilities provided by MSC.ADAMS, superior analytical capabilities, and flexible post-processing tools, you can build "virtual prototypes" of complex mechanical systems that simulate all of their movements in a virtual environment that simulates realistic working conditions To help users to effectively evaluate the various dynamics of the system and to quickly analyze and compare a variety of design ideas until the optimal design is achieved to improve product performance, thereby reducing costly, time-consuming physical prototyping, Product design level, shorten product development cycle and product development costs.

Users can add professional products on the basis of ADAMS's motion simulation capabilities, capture professional experience, build specialized templates, develop a complete and coordinated virtual prototyping, and help users make major decisions in product design.

Advantages of virtual prototyping:

• Compared with the physical prototype test, faster, more cost-effective analysis of the design changes on the impact of product performance;

• In the development process at each stage to obtain better design information, thereby reducing development risk;

• Through the analysis of a large number of design solutions to optimize the performance of the entire system to improve product quality;

• Simulation analysis method can be changed several times to analyze the parameters without having to change the test equipment, fixed equipment and test procedures;

• Working in a safe environment without worrying about loss of critical data or failure due to bad weather.

1.MSC.ADAMS features

• Software interface friendly, easy to use, easy to learn and use;

• Entity, elastomer collision and impact analysis, friction, gap analysis

• Unique friction, clearance analysis function;

• Knowledge of large engineering problems;

• Excellent solution stability, support single multi-CPU parallel computing;

• Support system parametric experimental study, optimization analysis of mechanical system dynamics analysis software;

• Unique vibration analysis function, can analyze the mechanism of arbitrary movement of the system under the system vibration performance;

• Provides a multidisciplinary software interface, including interfaces to CAD, FEA, CSD (control emulation software)

• It is the only specialized product that embodies the rich experience of industry application. It is the only dynamic software that has been verified by a large number of practical engineering problems. It supports Windows, Linux and UNIX operating system.

2.MSC.ADAMS product line

MSC.ADAMS product line includes: basic package, advanced package, car package, engine package, utility plug-ins and ADAMS-based third-party products.

• MSC.ADAMS basic package is the basis of the use of MSC.ADAMS other products, including the general modeling environment MSC.ADAMS / View, solver MSC.ADAMS / Solver, MSC.ADAMS / Solver_SMP single parallel module, linearization module MSC. ADAMS / Linear, postprocessing environment MSC.ADAMS / PostProcessor, CAD interface module MSC.ADAMS / Exchange, test analysis module MSC.ADAMS / Insight.

• MSC.ADAMS advanced package provides a standard interface with other CAE software model, which enhances the modeling ability of component flexibility, control system and hydraulic system in the model, and increases the function of system vibration performance analysis and durability analysis.

• MSC.ADAMS car package is specially developed for the automotive vehicle analysis tool, is a set of professional template modeling and industry standard analysis in one of the application environment for the user to quickly model, verify the design provides a professional approach and means.

• The ADAMS / Engine ADUS Engine Engine, ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, the ADAMS / Engine, ADAMS / Engine Timing Bel Is a special tool for the development of the engine, is a set of professional template modeling and industry standard analysis in one of the application environment for the user to quickly model, verify the design provides a professional approach and means.

• MSC.ADAMS practical plug-ins include: MSC.ADAMS / ATV Toolkit, MSC.ADAMS / Gear Toolkit, MSC.ADAMS / Leaf Spring Toolkit.

• Third party products based on MSC.ADAMS include VI-Rail, VI-Aircraft, VI-MotorCycle, VI-AutoFlex, etc.

3.MSC ADMAS basic package

3.1 Front / Post Processing MSC.ADAMS / View

MSC.ADAMS / View is a visualization environment of ADAMS front / post processing, which can establish a functional digital model of mechanical system, define moving parts and constraint relationship, apply external force or forced motion, and build simulation model of mechanical system. It also provides a graphical interface for visualizing the simulation results. It can display the animation and data curves of multiple simulation results at the same time, and can carry out the postprocessing and interference collision detection of the simulation data. MSC.ADAMS / View also provides a multi-objective, multi-parameter test design analysis module that provides a variety of test methods and performs a mathematical regression analysis of the resulting results so that product performance can be achieved with a minimum number of simulations And the relationship between the parameters.

Features:

• The parametric 3D solid model is established to facilitate the design improvement

• Importing other CAD / CAM / CAE software-generated geometric entities or even the entire assembly system with file formats such as igs, dwg / dxf, stp, stl, slp, shl, obj, and parasolid

• Extensible Constraints, Flexible Repositories and Libraries

• Lighting settings, to enhance visual effects

• Provide secondary development function. Can re-customize the interface, to facilitate the design process to automate or meet the special needs of users

• Calculation of the results of the animation, curve, color cloud display

• Multi-window display, up to six, each window can display different results or views

• Rich data post-processing functions (FFT transform, filter, Bode diagram, etc.)

• A variety of file output (AVI / MPG animation files, a variety of formats of image files, HTML format, table output, etc.)

• Output for finite element analysis, physical experiments and fatigue analysis and other file formats

• Interference collision, clearance check

• Data curve format and page settings can be saved to facilitate practical research strategies: design research, Monte Carlo method, design experiment, scanning study, periodic study, single / multi-objective study

• Support user-defined schemes, or apply existing scenarios to other models

• Mathematical regression analysis method using response surface method (Response Surface Methods)

• Can take into account the impact of various manufacturing factors (such as: tolerance, assembly error, processing accuracy, etc.)

• The experimental results are compared with the results of the calculation

• The results of the trial analysis can be posted on the web

• Can be output for Excel, MATLAB and Visual Basic file format

advantage:

• Share information throughout the design team

• Distinguish the primary and secondary design variables, identify the impact of design variables and interactions

• Consider production factors in advance to improve design quality

3.2 Solver MSC.ADAMS / Solver

MSC.ADAMS / Solver is the core solver for ADAMS. The solution process automatically checks the model, and then, depending on the model, automatically performs various types of calculations. The changes in the main data and the movement of the organization can be observed during the solution. MSC.ADAMS / Solver also provides a special tool for calculating the natural frequencies (eigenvalues) and modes (eigenvectors) of mechanical systems.

Features:

• Kinematics, static mechanics, quasi - static and nonlinear dynamics

• The kinematics equation, spatial coordinate system and Euler angle, Newton-Raphson iterative method are automatically formed by Euler-Lagrange method

• Kinematics, static mechanics, quasi - static and nonlinear dynamics

• The kinematics equation, spatial coordinate system and Euler angle, Newton-Raphson iterative method are automatically formed by Euler-Lagrange method

• A variety of explicit and implicit integral algorithms: Gear's and Modified Gear's, Runge-Kutta and ABAM, and fixed-step methods (Constant_BDF) and second-order HHT and NewMark integral methods

• A variety of integral correction methods: third-order exponential method, stable second-order exponential method and stable first-order index method

• Provides a large number of solver options for further debugging of the solver to improve the efficiency and accuracy of the solution

• Calahan and Harwell linearizer

• Supports user-defined subroutines

• The solution is stable, the result is accurate, after a lot of practical engineering problems test

advantage:

• Improve the stability of the system design

• Generate a description of the mechanical system used to control the system design

3.3 MSC.ADAMS / Linear Linearization Module

The main function of the MSC.ADAMS / Linear module is to linearize the nonlinear equations of MSC.ADAMS. The linearized equations can be used to calculate the natural frequencies (eigenvalues) and modes (eigenvectors) associated with the mechanical system design, and the results can be used to analyze the stability of the system under different operating conditions.

3.4 MSC.ADAMS / Solver_SMP single parallel module

MSC.ADAMS / Solver SMP module for MSC.Adams v2005 version of the new features, the module uses shared memory technology to support single-node multi-threaded CPU parallel operation, the use of the technology can support up to 8 CPU, so that the maximum speed can be improved Doubled

3.5 MSC.ADAMS / Postprocessor post-processing module

ADAMS / Postprocessor is a visual graphical interface that displays MSC.ADAMS simulation results. The improved unified interface has a tree-like editing window and an editable toolbar that displays both the results of the simulation animation and the data curve. The results of multiple simulations can be easily superimposed for comparison.

The result of the post-processing can either be displayed as an animation or as a data curve. You can display up to six views at the same time in the same page, or one page per data curve. In order to be able to use, data curve format and page settings can be saved, which will help save time and also facilitate the standardization of the report format.

ADAMS / PostProcessor can run either in the ADAMS / View environment or run independently. Independent operation can speed up the software boot speed, but also save system resources.

Features

• You can observe the results of the simulation with data curves and animations

• Rich data post-processing functions (FFT transform, filter, baot, etc.)

• Multiple file output (HTML format, table output, etc.)

• Gap check

• Elastic deformation, stress and strain of the color cloud display

• Lighting effect of advanced control

• Output movie animation file (Windows system)

• Output jpeg, png, tif, pict, hpgl and Postscript format image files

advantage

• Can deepen the understanding of system performance

• Share simulation results by graph, report and animation

• Quickly observe the results and repeated use

3.6 MSC.ADAMS / Exchange CAD / CAE / CAM interface module

With the MSC.ADAMS / Exchange module, users can transfer data from all geometric profiles of all the components or systems that are represented by the standard format of the product data exchange (PDE / Lib) to achieve the same level as Catia, Ideas, UG, Pro / E, MDT, Inventor, Solidwork, Solidedge and other CAD software common interface. The standard formats include IGES, STEP, DWG, DXF, stereolithography, wavefront, render, shell and Parasolid. Data is passed into MSC.ADAMS software to maintain the original accuracy of the model.

3.7 MSC.ADAMS / Insight

The more complex the design, the more factors that affect the design. Since the parameters are interdependent, it is difficult to improve the performance of the design each time you change a parameter. If you change multiple parameters at the same time, it will require a lot of simulation calculations and produce huge simulation data, which makes it difficult to determine which parameter is the primary and which is secondary. With ADAMS / Insight, engineers can systematically conduct virtual prototyping and physical prototyping, analyze in depth, and share their results with the entire team. Research strategies can be applied to components or subsystems, or extended to evaluate multi-level problems, to achieve cross-sectoral design optimization. ADAMS / Insight encourages the design team to collaborate at all levels, including the inclusion of suppliers, through the web or data forms for data exchange, so that designers, researchers and project managers can directly participate in the "if? In the study, without having to touch the actual simulation model. By sharing these research results, you can increase communication and accelerate decision-making across the team.

Features

• Research strategies: design studies, Monte Carlo studies, design experiments, scanning studies, periodic studies, single-objective and multi-objective optimization

• Support user-defined policies, or apply existing policies to other models

• Response Surface Methods (Response Surface Methods) is a mathematical regression analysis of the test data to help engineers better understand the performance of the product and the system within the various parameters of the relationship between

• Can take into account the impact of various manufacturing factors (such as: tolerance, assembly error, processing accuracy, etc.)

• A comprehensive analysis of the experiments with different domains with common input

• The experimental results are compared with the results of the calculation in order to study more deeply

• The network publishes the experimental results

• Can be output for Excel, MATLAB and Visual Basic file format

• Can be used in conjunction with other MSC.Adams modules, or from the MSC.Adams environment alone

advantage

• Share information throughout the design team

• Distinguish the primary and secondary design variables

• Identify the interaction of design variables

• To facilitate the design of the project management

• Understand the effect of the design

• Consider production factors in advance to improve design quality

4.MSC.ADAMS Advanced Package

4.1 Elastomer Analysis Module ADAMS / Flex

ADAMS / Flex uses the modal synthesis method to analyze the effect of component elasticity, adding the finite element modal analysis results to the simulation of the whole system. The results of the simulation, such as deformation, load time history, and vibration frequency, can be used in subsequent analyzes such as strength, fatigue, noise and vibration.

Features:

• Support modal neutral file (mnf) derived from professional finite element software such as MSC NASTRAN, MARC, ABAQUS, ANSYS, I-DEAS,

• Craig-Bampton component modal synthesis method

• Elastic body per step mode motion animation playback

• The modes can be filtered and the damping characteristics of each mode are set separately

• The distribution load and preload applied to the elastomer can be defined

• Support the elastic body, deformation stress strain of the color cloud image animation playback

advantage:

• Simplifies the modeling and simulation of mechanical systems that contain elastomers

• Can calculate the high precision distributed load

• Prepare a high-precision model for subsequent vibration analysis

• Support multi-disciplinary system optimization

4.2 Automatic Flexible Body Generation Module Adams / ViewFlex

Adams / ViewFlex is an automated flexible body builder that is integrated in Adams / View, which makes it easy to create a flexible body without leaving the Adams / View environment without the need for any other finite element software. This module allows simulation of the flexible body More fluid than the traditional way, more efficient.

Features:

• Automatic generation of elastomers directly in ADAMS environment;

• The background to complete the grid division, solution, MNF file generation process;Solved by built-in Nastran.

advantage:

• Efficient and smooth process;

• High accuracy.

4.3 Control Module ADAMS / Controls

The control system is integrated with the mechanical system for co-simulation. There are two ways to integrate, one is the MSC.ADAMS established mechanical system model integrated into the control system simulation environment, composed of a complete coupling system model, the joint simulation. Another way is to control the software to establish the control system read into the MSC.ADAMS model, the system-wide co-simulation.

Features:

• Mechanical systems can take into account the inertia of each component, friction, gravity, impact and other factors.

• And common control software for two-way data transfer, including MSC Easy5, MATLAB and MATRIX

• Supports both joint simulation and function evaluation

• The continuous and discrete systems are supported by the state equation

advantage:

• So that the communication between the control system engineer and the mechanical system engineer is more convenient

• Effectively solve the mechanical, control system coupling model

4.4 Vibration analysis module ADAMS / Vibration

MSC.ADAMS / Vibration is used to analyze the forced vibration in the frequency domain of the system model to determine the vibration performance of the system, to optimize the vibration, vibration isolation and vibration performance, and to analyze the stability of the root trajectory, the output data Can be used for NVH research.

Features:

• Forced vibration analysis of the model in the frequency domain under different working states

• Can include the effects of hydraulic, control and user-defined subsystems

• The frequency domain excitation signal includes a sinusoidal sweep / sweep signal, a power density spectral signal, an unbalanced rotor

• The kinetic energy, strain energy, and energy dissipation of each order mode

• Supports experimental research in ADAMS, DOE and optimization functions

• Output of the mechanical system A, B, C, D matrix, easy and control software interface for further analysis

advantage:

• In the early design of the vibration performance test

• The same model can be directly studied without changing the vibration performance

• The influence of each parameter on the whole system vibration model is studied

• Combined with time domain and frequency domain analysis, the system can be in different working conditions for a more comprehensive vibration analysis

4.5 Durability Analysis Module ADAMS / Durability

MSC.ADAMS / Durability can generate subsystems or parts of the load process, the tools to drive fatigue analysis, such as MTS equipment or fatigue analysis software, and in MSC.ADAMS components on the concept of fatigue strength of the study.

Features:

• Load - Time history of DAC or RPC III file format for input / output

• Modal Stress Recovery - Input Modal Information and Reproduce Stress Strain

• Interfaces with finite element software such as MSC Nastran, ABAQUS and ANSYS

• With the MSC Fatigue or nCode FE-Fatigue interface, can be part of the fatigue analysis

• The test data is filtered to remove the noise in the data or the signal that is not of interest

advantage:

• Strengthen cooperation with CAE and the trial department

• Reduce the time and cost of conducting fatigue tests

• Improve the fatigue performance of the product

• Evaluate stress and fatigue performance at the product level

4.6 Mechatronics module MSC.ADAMS / Mechantronics

MSC.ADAMS / Mechantronics can be more convenient to control the system into your system model. The module provides modeling elements for the transfer of information between the virtual control system and the virtual control system, which means that complete system-level optimization will be easier to implement, especially for complex problems such as torque coordination control strategy in vehicle design Or heavy machinery in the hydraulic system performance optimization.

5.ADAMS car package

ADAMS / Car Package includes a series of car simulation module for the rapid establishment of functional digital prototype, and its performance evaluation of a variety of simulation.

A functional digital prototype built with MSC.ADAMS / Car Package may include the following subsystems: chassis (driveline, brake, steering, suspension), tires and pavement, powertrain, body, and control systems. The user can simulate the function of the subsystem or vehicle in the virtual test bench or test site and optimize its design parameters. The MSC.ADAMS car simulation tool contains a wealth of subsystem standard templates and a number of pre-defined components for building subsystem templates and some special tools. Through the template sharing and combination, the rapid establishment of the subsystem to the system model, and then a variety of pre-defined or custom virtual test.

5.1 MSC.ADAMS / 3D Road MSC.ADAMS 3D pavement module

With the MSC.ADAMS / 3D Road module, users can easily create three-dimensional smooth pavement, such as multi-storey car parks, racing tracks and highways. Smooth road refers to the curvature of the road is less than the curvature of the tire.

MSC.ADAMS / 3D Road can be integrated into the MSC.ADAMS / Tire Handling module, ie MSC.ADAMS / Tire can use the 3D road model file (.rdf). Users can select different roads by selecting road documents. The three-dimensional road model can be easily called in MSC.ADAMS / Car and MSC.ADAMS / Chassis. In the MSC.ADAMS / Car and MSC.ADAMS / Chassis can be three-dimensional road simulation. In the animation process, you can automatically generate three-dimensional road model. If the three-dimensional path requires tracking trajectory, then the appropriate driver control file (.dcf) and the driver control data file (.dcd) are used to determine the driver's input parameters and the vehicle's trajectory. When MSC.ADAMS / 3D Road is used with MSC.ADAMS / Car, MSC.ADAMS / Chassis and MSC.ADAMS / Driver, the user can determine the travel path of the vehicle without using additional driver control files.

5.2 MSC.ADAMS / Car Ride: Car ride comfort analysis module

MSC.ADAMS / Car Ride module for the MSC.ADAMS / Car plug and play module, the use of the module can be quickly completed the suspension or vehicle assembly model, and then use the module to provide comfort analysis test bench, you can quickly Of the simulation suspension or vehicle in the rough road or in the actual vibration test bench carried out on a variety of vibration performance test to support a variety of excitation signals, including the measured displacement or load time history signal, with SWIFT tire model, You can also consider the tire on the vehicle vibration performance. With the MSC.ADAMS / Vibration module can also be analyzed in the frequency domain.

5.3 MSC.ADAMS / Car Vehicle Dynamics: Automotive Dynamics Analysis Module

MSC.ADAMS / Car vehicle dynamics module can carry out a variety of vehicle performance simulation. Users can be assembled front and rear suspension assembly model for the vehicle, and a variety of standard simulation test conditions, such as: double line test, linear braking, turning and so on. Other embedded modules (eg MSC.ADAMS / Driver, MSC.ADAMS / Tire Handling and MSC.ADAMS / 3D Road) can provide richer simulation test conditions for vehicle performance analysis and observe the results by animation and curves The

5.4 MSC.ADAMS / Car Suspension Design: Automotive suspension design module

MSC.ADAMS / Car suspension design module simulation conditions and analysis results and physical suspension in the test lane or platform are exactly the same, but can significantly reduce development costs and shorten the product development cycle. The user can create a virtual suspension with the help of the panel, modify the parameters (such as hard spot position and bushing parameters), and quickly determine the optimal design according to the customer's requirements. A variety of standard suspension tests can be carried out using virtual test benches, such as single-wheel beating test, two-wheel beating test and steering motion test.

5.5 MSC.ADAMS / Driver: Car driver module

Application MSC.ADAMS / Driver module, the user can quickly drive your design of the car for a variety of simulation tests. MSC.ADAMS / Driver can simulate the driver's various actions, such as: turning, braking, acceleration, shift and clutch operation. When MSC.ADAMS / Driver and MSC.ADAMS / Tire at the same time, engineers can simultaneously analyze the uneven road and mountain road conditions under the three-dimensional road driving performance.

Application MSC.ADAMS / Driver, by defining the driver's behavior characteristics to determine the vehicle's performance changes. For example, you can clearly distinguish between car drivers and passenger car drivers, and even define a particular driver's driving habits. In this way, the user can determine the various driving behavior, such as steady-state steering, cornering, double-line test, transverse wind test and different road adhesion coefficient μ brake test. Use the above information, MSC.ADAMS / Driver and MSC.ADAMS / Solver for data exchange to determine the steering wheel angle or torque, the position of the accelerator pedal, the brake pedal on the force, the clutch pedal position, transmission stalls, etc. Improve the confidence of vehicle simulation.

MSC.ADAMS / Driver Another feature is the ability to self-learning, according to the dynamic performance of the vehicle to adjust the manipulation of behavior, or simulate the actual driver's manipulation. When the vehicle uses a control system that includes positive and negative feedback, such as ABS system, four wheel drive system, four wheel steering system, cruise driving system, etc., the module can help engineers to better optimize the performance of the car.

5.6 MSC.ADAMS / Driveline: Automotive Drive Train Module

The module is part of the "functional digital vehicle", the ability to design and analyze the drive system makes it easy for users to conduct stability and comfort studies in the same environment. Due to the use of the same environment and database, the driveline module allows the virtual prototypes of the driveline to be shared and used for multi-objective optimization of comfort, stability, durability, vibration and control.

The driveline model can be easily integrated into the vehicle model to study the interaction of the driveline with other components in the chassis. By using this template-based tool, the user can build a model of the driveline components to simulate dynamic system behavior under various operating conditions. The user simply enters the parameters, the differential, drive shaft, splitter and transmission models are automatically created. Gear force, free travel, viscous couplings and anti-skid differentials come from the detailed unit library. Components can be easily activated or suspended to study their impact on the overall system behavior. While providing a wealth of standard tests, users can also efficiently create their own tests.

The drive module provides a powerful tool for a wide range of applications. Support front-wheel drive, rear-wheel drive and four-wheel drive, torque transfer, distribution, gyro effect and balance effects, bearing dynamics and elasticity, and component-level noise and vibration excitation. Can study the impact of component flexibility on the design and the dynamic behavior of the system, the high speed of the secondary movement. The analysis of the control system, the study of the transmission system, the fatigue load forecast for the components used for the durability analysis.

5.7 MSC.ADAMS / Tire Handling: Maneuverable tire module

MSC Software provides a comprehensive range of tire models and software for handling cars around the world. The MSC.ADAMS / Tire Handling module allows the user to easily establish the force and moment of the vehicle acting on the tire during road motion. The use of these tire models can predict the vehicle's dynamic behavior in large displacement vehicles under any operating conditions. The module provides a variety of tire models for handling (depending on the input data variables), including Fiala models and UA models based on simple tire characteristics, as well as tire Pacejka models based on extensive and detailed tire testing.

5.8 MSC.ADAMS / Chassis (20097): Automotive chassis analysis module

ADMAS / Chassis provides users with a wealth of industry standard model panels and analytical conditions. In addition, users can customize the existing panel and analyze the situation through customization.

With MSC.ADAMS / Chassis's unique fingerprint technology, users can manage up to 50 simulation cases at the same time. Application of fingerprint technology can be analyzed in different environments with the same model, or different models in the same environment analysis, or any combination. When applying MSC.ADAMS / Insight in ADMAS / Chassis, you can provide an excellent development platform for analyzing one-half or full-car models. Application of MSC.ADAMS / Insight module, the user can scan any parameters of the model analysis, statistical analysis of test results, study the impact of manufacturing tolerances on vehicle performance, optimize the design.

5.9 vehicle handling stability simulation

Vehicle handling stability means that the driver can follow the driver through the steering and steering wheel in a given direction, and when the outside world interference, the car can resist interference and keep the car in the driver does not feel too nervous, fatigue conditions Stable driving ability. Car handling stability is one of the most important performance of the car, it is not only on behalf of the driving convenience of car driving, but also determine the high-speed car safe driving a major performance. There are several aspects to evaluate the stability of the operation, such as steady-state rotation characteristics, transient response characteristics, return to the right, steering light, the typical driving conditions and the ultimate driving capacity.

5.10Kinematic Simulation of Suspension and Steering System

Suspension analysis is one of the important contents of vehicle dynamics analysis. The variation curve of suspension parameters under various operating conditions is calculated, which provides the basis for determining the four-wheel positioning parameters and steering system parameters. After the suspension dynamics model is established, the typical suspension and steering system structure can be analyzed, or the model can be used to analyze the suspension of other structural forms, or the rigid body can be transformed into flexible body analysis.

5.11 vehicle ride comfort simulation

Car ride comfort is to keep the car in the process of driving, the crew in which the vibration environment has a certain degree of comfort performance, for the truck also includes the integrity of the goods to maintain the performance. The purpose of the study of ride comfort is to control the transmission of vibration, so that the uncomfortable feeling of the occupants does not exceed a certain limit, which is necessary to grasp the characteristics of the various aspects of the car vibration system, the response to vibration, the transmission characteristics of the vehicle vibration system and as a vibration The statistical law of the input pavement roughness.

Car ride comfort is usually evaluated by the level of vibration of occupants and cargoes. The evaluation is divided into subjective evaluation and objective evaluation. Subjective evaluation is divided into expert evaluation and general customer evaluation; objective evaluation mainly to seat and box vibration acceleration to evaluate. The vehicle was tested for ride comfort in order to assess the ride comfort of the car. The ride speed test is generally selected for random pavement and special pavement. The random pavement is divided into good pavement and bad road. The natural frequency (bias frequency) and damping ratio of vehicle suspension are also important contents of verification and evaluation. For commercial buses, the comfort of drivers and passengers is an important indicator of vehicle comfort.

MSC.ADAMS / Car can allow users to establish a stochastic model of the measured road model or GB grade road, and then simulate the road test with the established virtual prototype vehicle to obtain the amount of movement of the vehicle during actual road driving, such as the vertical position of the driver's position Acceleration and so on.

Using MSC.ADAMS / Car can also establish a virtual indoor bench test, the vehicle model will be placed on the virtual test bed, and then add the measured pavement on the bench to stimulate the road to get the vertical acceleration of the cab Related data.

6. Engine package

MSC.ADAMS / Engine includes a series of automotive internal combustion engine simulation module, you can easily create including the timing chain / belt, valve mechanism, accessories drive system, crank connecting rod piston system, gears, bearings, etc. detailed engine number prototype. It can analyze the dynamic response of the engine, the movement, load, vibration / noise, durability and other properties of the subsystem / part (rigid body or flexible body).

7. Practical plugin

7.1 MSC.ADAMS / LeafSpring ToolKit (steel plate spring toolbox)

The leaf spring is one of the widely used suspension forms on the vehicle. MSC company developed MSC.ADAMS steel spring toolbox using discrete beam element method for engineers to provide a high quality steel leaf spring modeling environment, has been successfully through dozens of users thousands of verification. The toolbox has the advantages of easy to use and reliable results. Engineers can quickly build a virtual prototype of the leaf spring, study the design is reasonable, and the suspension model and through MSC.ADAMS / View or Car and other vehicle models to build the assembly, thus saving weeks or months The

The toolbox mainly includes the following options:

Geometric modeling options

• Symmetrical structure or asymmetric structure

• Monolithic or multi-leaf spring

• The lifting lugs are in a compressed state or in a stretched state

• The leaf spring is in a positive or reverse state

• Dedicated steel plate spring and frame connection

• Dedicated lifting lug and frame connection

Simulation conditions options

• Analyze according to physical prototype data

• Application of virtual test bench for simulation test

• Verification of spring force - deformation curve of steel plate

• Study the shape of the leaf spring under load

• Study on the friction between steel plate springs

Mechanics modeling options

• The number of beam elements

• The number of contact forces

• Material properties

• Reed between the friction

• Parameterized axle / frame mounting position

• Ideal constraint or bushing connection

7.2 MSC.ADAMS / ATV Toolkit

The ATV Toolkit is a specialized tool for MSC.ADAMS for dynamic analysis of tracked vehicles and is an ideal tool for analyzing the dynamics of military or commercial crawler vehicles.

Through the ATV Toolkit, the use of its body, track, wheel and ground template, can quickly build the crawler vehicle subsystem to the assembly model. Provides a variety of suspension mode and track template, user-friendly to establish a variety of complex vehicle model. The dynamic performance of the vehicle under various road conditions (soft soil, hard soil), different speed and operating conditions (straight and steering) is studied by the improved efficient integral algorithm, and the optimal design is carried out. At the same time, the model can also join the control system, flexible parts, user-defined subsystems and other complex elements to make the model more accurate.

In the MSC.ADAMS / ATV Toolkit, a complete tracked vehicle model (including a rubber track) can be built, or a simplified tracked vehicle model can be built.

7.3 MSC.ADAMS / Gear ToolKit (gearbox)

MSC.ADAMS / Gear can quickly calculate the transmission characteristics between the gears to capture the dynamic behavior before and after engagement. The dynamics of straight teeth, helical teeth, bevels and their friction can be studied in a model. Quickly and easily simulate the train wheels (including planetary gears).

The main functions of the toolbox are as follows:

• Easy to model, only the need for standard gear parameters (gear modulus, pitch circle diameter, etc.)

• Using the involute function equation to calculate the gear geometry, meshing point, gear meshing force (internal and external teeth)

• The bevel gear is simulated by changing the wheelbase and tooth thickness

You can consider the gear shaft elasticity and non-gear center spool rotation of the transmission gear and so on.

8 MSC.ADAMS application example