MSC.MARC--A leader in the nonlinear finite element software industry
Editor：AdminTime:2017-06-22 10:48:21
MSC.Marc Global non-linear finite element software industry leader, is MSC.Software company in 1999 acquisition of MARC company's products. MARC was founded in 1967, is the world's first non-linear finite element software company. After more than 30 years of unremitting efforts, MARC software has been highly respected and widely used by academics and industry, and has established its leading position in the global nonlinear finite element software industry.
With the continuous expansion of MARC software, the application of software has expanded rapidly from the early stage of nuclear power development to aviation, aerospace, automobile, shipbuilding, railway, petrochemical, energy, electronic components, machinery manufacturing, material engineering, civil engineering, Medical equipment, metallurgical technology and household appliances, as many well-known companies and research institutions to develop new products and new technology necessary tools.
MARC software passed the ISO9001 quality certification. In China, MARC has adopted the National Pressure Vessel Standardization Technical Committee of the strict assessment and certification, and pressure vessel analysis and design standards GB4732-95 compatible with the finite element analysis software.
Feature of product
Analysis of multiple physical fields.
Coupling analysis of composite field.
Powerful nonlinear analysis capabilities.
The most advanced contact analysis function.
Parallel computing function.
Rich cell library.
Open user environment.
Powerful grid adaptive function.
Automatic three - dimensional grid re - division.
Convenient and efficient user interface
MSC.Mentat as MSC.Marc program dedicated front and rear processor, fully support MSC.Marc all functions. In additionMSC.Patran has achieved full support for MSC.Marc structural analysis, thermal analysis and thermo-structural coupling analysis. The following describes the function of MSC.Mentat.
1.Geometric modeling
MSC.Mentat can generate geometric models through top-down and bottom-up methods, supporting various aspects of geometric elements, lines, faces, and bodies, such as adding, deleting, editing, and displaying.
2. Meshing
MSC.Mentat provides a full-featured, high-performance automatic grid generation technology that transforms geometric points, lines, and facets directly into nodes, line elements, and facets of finite units. You can automatically divide the mesh or mesh by geometry. With a dedicated hexahedral mesh generator and ReBar unit generator.
MSC.Marc hexahedral mesh automatic division function fully takes into account the basic requirements of meshing, the user can specify the internal grid sparse transition level, the program in the sparse grid transition automatically generate multipoint constraint equations to meet the displacement coordination.
3. Grid operation
The other related mesh functions of MSC.Mentat are replication, movement, expansion, symmetry, conversion, unit order conversion, inspection, rearrangement, intersecting, clearing, relaxation, straightening, reassignment, attachment and so on.
4. Other features
MSC.Mentat pre-processing functions In addition to geometric modeling and meshing, you can also define boundary conditions, material parameters, geometric parameters, contact information, initial conditions, connection relationships (such as multipoint constraints) and so on.
For the polymer material, such as rubber materials, MSC.Mentat provides a curve fitting function. For the material model parameters required for the damage analysis, the user-defined curve of the material for the analysis of the damage can be automatically fitted after the continuous or discontinuous softening of the material.
5. MSC.Mentat file interface
MSC.Mentat has interfaces with a variety of mainstream CAD, CAE software, including: AutoCAD, ACIS, IGES, C-MOLD, STL, I-DEAS, MSC.Nastran, MSC.Patran, VDAFS. The MSC.Marc analysis can also be output in the format I-DEAS or Hypermesh for post-processing on the I-DEAS or Hypermesh interface.
MSC.Marc can generate a modal neutral file (MNF) to define the flexible components integrated into the MSC.ADAMS model.
6. MSC.Mentat results show
MSC.Mentat post-processing to support a variety of results display, including: animation, contours, cloud, slice, contour display, vector display, vector display, tensor display, path display, beam shear Moments, streamlines, curves, tables and documents.
Strong analytical skills
MSC.Marc software is a powerful finite element analysis system that provides solutions to a variety of problems.
1.Non-linear structural analysis
Nonlinear static analysis
Including material nonlinearity, geometric nonlinearity and nonlinear boundary conditions.
Non - linear transient analysis
Time function-driven process analysis.
Nonlinear dynamic analysis
Including modal analysis, transient response analysis, simple harmonic response analysis, spectral response analysis.
Nonlinear buckling analysis
There are two ways MSC.Marc software deals with stability issues. One is to solve the eigenvalue analysis of the unstable state and the critical load by the eigenvalue problem. The other is to analyze the incremental finite element analysis of the incomplete information of the trajectory of the unsteady deformation, stress and load.
Just plasticity analysis
Viscoplastic analysis
Elastic - plastic analysis
Viscoelasticity analysis
Superelastic analysis
Superplasticity analysis
Analysis of Periodic Symmetry Structure
Sensitivity and optimization analysis
Supercell analysis
Contact analysis function
In the same software MSC.Marc has the strongest contact analysis capabilities. With the traditional gap friction unit mode, non-linear spring elements can also be used to simulate the nonlinear support boundary. For basic contact states, MSC.Marc provides a direct constraint based contact algorithm that automatically analyzes the contact between the deformable body, the deformable body and the rigid body and the deformable body itself. The new Segment-to-Segment contact form makes the stress analysis of the two contacts at the contact site very continuous.
MARC supports beam and beam, beam and shell, the contact between the beam and the entity, allowing the shell unit edge and edge, shell element side and the entity and other unconventional contact analysis.
Allow contact nodes to use multipoint constraints, you can use TYING, SERVO LINK, INSERT, CONTACT, RBE2, RBE3 options. A variety of contact separation mode, making MSC.Marc contact algorithm can do a variety of different issues.
MSC.Marc can optimize the contact constraint of the deformable body according to the average stiffness of the contact body and the contact area of the contact area. The real high-order element contact analysis can deal with the contact stress and the friction stress of the contact node or the contact node.
MSC.Marc parallel computing constraints of the processing methods were treated in particular, so that the results of parallel computing and a single CPU solution is exactly the same.
MSC.Marc has a bilinear friction model based on relative displacement, which is more accurate than the velocity-based Coulomb friction model and is more efficient and more efficient than the viscous-slip friction model.
MSC.Marc electrostatic-structural coupling analysis, allowing the conductor and the surrounding media mesh is not coordinated, so easy to mesh, for the equipment has a large movement, you can also re-division of the overall grid.
In the analysis of radiation heat transfer, MSC.Marc automatically increases the radiation analysis between the object and the environment when the contact body is separated. Between the contact body can be defined with the time function or any other variable changes in the friction coefficient, heat transfer coefficient, etc .; for multi-step processing, you can use the restart function to increase or change the rigid contact body.
Initial state function
The results of the previous analysis (including stress, strain, temperature, displacement, etc.) are transformed into the initial conditions of the new model. This feature greatly improves the flexibility of the analysis, processing, civil engineering and other industries are particularly useful.
Local analysis function
Using the results of the overall analysis, the localized refinement of the structure of the grid for the second analysis, can be very economical to get local accurate results. The functional static analysis and transient dynamics analysis are applicable.
2.Failure and destruction analysis
Fracture analysis
Which supports the stress intensity factor and J integral evaluation of linear elastic or brittle materials, the J integral evaluation of nonlinear elastic materials, the generalized J-integral calculation including inertia, hot load and finite inelastic strain. VCCT virtual crack closure technique provides a new The energy release rate calculation method, and makes the dynamic expansion of cracks and fatigue expansion calculation becomes a reality.
Crack initiation and expansion
Composite material
Toughness metal damage and rubber softening failure
Analysis of delamination of composite materials
Wear analysis
3.Analysis of heat transfer process
MSC.Marc software has powerful one-dimensional, two-dimensional, three-dimensional steady-state / transient heat transfer analysis capabilities; can describe the isotropic, anisotropic, or orthotropic thermal physical parameters.
MSC.Marc software provides four thermal analysis boundary conditions: temperature, heat flow intensity, surface convection, surface radiation. For forced convection heat transfer analysis, the velocity field can also be defined. MSC.Marc can calculate the latent heat of phase change, which can be coupled with heat transfer analysis.
4-Multi-field coupling analysis
MSC.Marc support electrostatic field analysis, static magnetic field analysis, sliding bearing analysis, fluid analysis, sound field analysis and other field analysis. In additionMSC.Marc also has a strong multi-field coupling analysis function, supporting heat-machine coupling, flow-heat-solid coupling, thermo-electric coupling (Joule heat generation), heat-electric-solid coupling, magneto-thermal coupling, Magnet - structure coupling, diffusion - stress coupling, piezoelectric analysis, fluid - soil coupling (soil seepage) interaction and electromagnetic field coupling.
5.Processing process analysis
MSC.Marc can be used for simulation of a variety of processes, such as forging, extrusion, stamping, superplasticizing, sheet drawing, powder molding, blowing, casting, heat treatment, welding, cutting, and curing of composites.
The MSC.Mentant and MSC.Marc can define the various attributes of the heat source in the welding simulation, including the size, shape, size and movement speed, as well as the movement path, direction and number of repetitions of the heat source. The solder unit can be automatically processed in the post- Life and death show.
For CNC machining simulation, in MSC.Mentant and MSC.Marc also has some unique features.
6.Thermal ablation analysis
Based on engineering requirements for spacecraft protection and solid propellant ablation analysis, MSC.Mentant and MSC.Marc have developed ablation analysis modules that can consider a variety of complex factors in the ablation process.
7.Stable solution technology
Multiple time points
For the transient heat conduction problem, MSC.Marc uses the post-difference scheme to calculate the temperature change rate, and obtains the recursive scheme of temperature field solution. In the process of solving, MSC.Marc provides three time integral schemes: the implicit Newmark-beta method, the implicit single-step Houbolt method, and the explicit central difference method.
Intelligent Bandwidth Optimization
MSC.Marc provides three optimized bandwidth methods: Cuthill-Mckee algorithm, Sloan algorithm and minimum degree of freedom optimization algorithm. In addition, you can also receive user-defined internal node number.
Multiple iterative algorithms
MSC.Marc provides three non-linear iterative solutions: the Newton-Raphson iteration, the modified Newton-Raphson iteration, and the modified Newton-Raphson method with strain correction.
Controllable convergence criterion
MSC.Marc provides three different convergence criteria: residual force criterion, displacement criterion, strain energy criterion.
Multi-solution solver
MSC.Marc has a variety of algebraic equations solving methods: direct method, iterative method, parallel solver.
Automatic load control
MSC.Marc software for a variety of analysis problems, to provide a variety of load / time step adaptive control method. Including the arc length method, the adaptive step size, the automatic load step size, the automatic time step, the automatic load step of the explicit creep analysis, the adaptive load step of the thermoelastic creep or the thermoplastic creep. Adaptive load step size and time step control are effective methods to obtain accurate results of complex nonlinear simulation. The automatic loading control of MSC.Marc can achieve reasonable results under physical or numerical instability. This technique ensures the reliability and accuracy of quasi-static analysis and dynamic analysis. The quasi-static damping model of MSC.Marc is very reliable for the automatic time step of system mutation problem (contact, instability, etc.), and the user does not need to specify any damping coefficient.
MSC.Marc's controllable step size adjustment function, to avoid the step growth is too fast; and the emergence of a small time step.
Rich material model
MSC.Marc software provides an extremely rich material model
1. Basic material
Line elastic material model
Nonlinear elastic material model
Sub-elastic material model
Hyperelastic material model
Ideal plasticity, elastoplasticity, superplasticity, powder plasticity, viscoplasticity, viscoelastic material model
Heat rheology, memory alloy, creep material model
2. Failure material
Damage model of metal material
Rubber material damage model
Composite material damage model
Anti-pull material damage model
Wear model
3. Composites
MSC.Marc software has a strong ability to simulate composites, can describe the layered composite materials, reinforced composite materials and composite materials.
4. Rubber material
MSC.Marc uses the superelastic constitutive model of the strain energy function to describe the behavior of the rubber material. MSC.Marc provides more than ten kinds of functions to describe elastic strain energy: including basic Neo-Hookean function, binomial Mooney-Rivlin function, three Mooney-Rivlin functions, Signiorini function, cubic invariant function, three-dimensional deformation function Yeoh function, Boyce-Arruda model, Gent model, generalized Ogden strain energy function. These models cover the behavior of various rubber materials.
5.Other materials
Gaskets, low tensile materials, rock, ice and snow materials, soil models, biomaterials, foams, plastic materials.
6. Non-structural materials
Analog electric field, magnetic field, sound field.
Rich unit type
1. Structural analysis unit
Cable unit, beam element, thin film unit, shell element, continuum element, gap - friction element, semi - infinite element, elbow unit, shear plate unit, stiffener unit, incompressible unit, often expansion unit, assumed strain unit
2. Heat transfer analysis unit
Three-dimensional rod element, plane and axisymmetric element, plane and axisymmetric semi-infinite element, hexahedral element / tetrahedral element, semi-infinite block element, axisymmetric or space shell element.
3. Other analysis units
Acoustic field analysis, electric field analysis, sliding bearing analysis, magnetic field analysis, electro - magnetic field analysis, piezoelectric analysis, sealed cavity structure analysis, soil analysis, fluid analysis unit
Electromagnetic analysis of the unit, including 4 nodes, 10 nodes tetrahedral unit and 2 node line unit, can achieve the complex structure of the grid and the boundary conditions of the application. The post-processing of the Rebar unit can show the rebar and the angle of the reference axis projection in the rebar layer plane.
Advanced grid adaptation technology
MSC.Marc not only supports the automatic reanalysis of two-dimensional triangles and quadrilateral meshes, but also supports automatic re-division of 3D tetrahedral meshes, 3D hexahedrons and shell elements.
Combining the automatic grid re-splitting technique with the node reaction relaxation technique can analyze the hyperplasia of free surface such as crack cracking.
Adaptive grid generation is based on some error criterion. Once the error criteria are met in the specified cell, these units are re-divided in the specified load increment step at the given cell segmentation level.
Marc's automatic grid weighting and adaptive grid production technology support parallel solution. The combination of automatic grid re-division technology and automatic grid re-division technology and adaptive grid production technology and parallel analysis technology can achieve the perfect combination of efficiency and precision.
MSC.Marc's unit life and death technology allows you to add or remove units at any time during the analysis as needed. The conditions for determining the unit's life and death can also be defined by the user subroutine interface. MSC.Marc software unit life and death technology can be combined with grid adaptive technology and grid rework technology. For example, the combination of adaptive technology and unit life and death technology can be carried out several times of surfacing welding process simulation.
Powerful secondary development function
MSC.Marc software provides more than 300 specific functions of open program common blocks and more than 100 user subroutine interfaces. The user can invoke these program modules without restriction. The user subroutine interface covers all aspects of the MSC.Marc finite element analysis, and there are many successful cases at home and abroad, especially in the definition of user constitutive models and the application of complex boundary conditions.
MSC.Marc not only supports the automatic reanalysis of two-dimensional triangles and quadrilateral meshes, but also supports automatic re-division of 3D tetrahedral meshes, 3D hexahedrons and shell elements.
Excellent parallel solution algorithm
MSC.Marc software for large linear and nonlinear problems can be solved using multi-CPU parallel computing method to solve. The method is characterized by the fact that each region is calculated separately, including unit assembly, matrix decomposition, stress calculation, and finally output the results of the whole model.
Parallel analysis can be used to enter a single input file without having to have an input file for each area; using a dedicated parallel unit technology, material model, contact algorithm makes the CPU and memory to achieve a high efficiency.
The parallel version of the MSC.Marc software can run on multiple CPU servers or workstations that share memory or distributed memory. It can also be run on a networked UNIX workstation or cluster machine, or even in a PC cluster based on the Windows network platform.
MSC.Marc parallel analysis of the calculation speed can be linear or even superlinear.
Hardware and software support platform
MSC.Marc, MSC.Mentat has a wide range of platform applicability, can be PC, workstations, minicomputers, giant machines, supercomputers and other hardware platforms to run, support heterogeneous heterogeneous platform for network floating. Supported operating systems are UNIX, Linux, Windows XP and so on.
