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Material Module serves as a database for material properties used in analysis projects. The module not only provides a material library but allow you to create a material using the given properties. The properties view of a Material object is the primary user interface designed to let you create, save, and retrieve material models. The well-defined material object can be saved and used in the subsequent projects.



The WELSIM Material module and MatEditor share the same features. For the completed and latest content, you can refer to the manual of MatEditor.

Graphical user interface

The ease-of-use Material Module contains the following graphical user interface components:

  • Toolbox: provdies two options (Library and Build tabs) for you to edit material data.
  • Library outline pane: lists predefined materials for you to quickly add material data.
  • Property outline pane: shows an outline of the contents of the togglable material properties. You can add a property data entry to the material by toggling on the property entry or remove property by toggling off the property entry.
  • Properties view pane: displays all properties that are going to be added to the Material Object. You can tune the property values at this pane.
  • Table pane: allows you to define and review tabular data for material properies.
  • Chart pane: displays the property tabular data in vivid.

Predefined materials

WELSIM also provide predefined materials, which covers most of commonly used materials. Users can choose these materials and apply to the successive finite element analysis.

Category Materials
General Materials Structural Steel, Stainless Steel, Aluminum Alloy, Concrete, Copper Alloy, Gray Cast Iron, Titanium Alloy
Nonlinear Materials Aluminum Alloy NL, Concrete NL, Copper Alloy NL, Stainless Steel NL, Structural Steel NL, Titanium Alloy NL
Hyperelastic Materials Elastomer Mooney-Rivlin, Elastomer Neo-Hookean, Elastomer Ogden, Elastomer Yeoh, Neoprene Rubber
Thermal Materials Brass, Bronze, Copper, Diamond, Ferrite, Nodular Cast Iron, Solder, Teflon, Tungsten, Wood
Electromagnetic Materials SS416, Supermendure
Other Materials Water Liquid, Argon, Ash

Material properties

The supported material properties are listed in the table below.

Category Materials
Basic Density, Isotropic Thermal Expansion, Isotropic Instantaneous Thermal Expansion, Orthotropic Thermal Expansion, Orthotropic Instantaneous Thermal Expansion, Constant Damping Coefficient
Linear Elastic Isotropic Elasticity, Orthotropic Elasticity, Viscoelastic
Hyperelastic Test Data Uniaxial Test Data, Biaxial Test Data, Shear Test Data, Volumetric Test Data, SimpleShear Test Data, Uniaxial Tension Test Data, Uniaxial Compression Test Data
Hyperelastic Arruda-Boyce, Blatz-Ko, Gent, Mooney-Rivlin 2, Mooney-Rivlin 3, Mooney-Rivlin 5, Mooney-Rivlin 9, Neo-Hookean, Ogden 1st Order, Ogden 2nd Order, Ogden 3rd Order, Polynomial 1st Order, Polynomial 2nd Order, Polynomial 3rd Order, Yeoh 1st Order, Yeoh 2nd Order, Yeoh 3rd Order
Plasticity Bilinear Isotropic Hardening, Multilinear Isotropic Hardening, Bilinear Kinematic Hardening, Multilinear Kinematic Hardening, Anand Viscoplasticity
Creep Strain Hardening, Time Hardening, Generalized Exponential, Generalized Graham, Generalized Blackburn, Modified Time Hardening, Modified Strain Hardening, Generalized Garofalo, Exponential Form, Norton, Combined Time Hardening, Rational Polynomial, Generalized Time Hardening
Visco-elastic Prony Shear Relaxation, Prony Volumetric Relaxation
Other Mechanical Strain Life Parameters, Compressive Ultimate Strength, Compressive Yield Strength, LaRc0304 Constants, Orthotropic Strain Limits, Orthotropic Stress Limits, Puck Constants, Tensile Ultimate Strength, Tensile Yield Strength, Tsai-Wu Constants, Shape Memory Effect, Drucker-Prager Strength Piecewise, Drucker-Prager Strength Linear, Ideal Gas EOS, Crushable Foam, Nonlinear Elastic Model Damage, Plakin Special Hardening, Tensile Pressure Failure, Crack Softening Failure
Thermal Enthalpy, Isotropic Thermal Conductivity, Orthotropic Thermal Conductivity, Specific Heat
Electromagnetics B-H Curve, Isotropic Relative Permeability, Orthotropic Relative Permeability, Isotropic Resistivity, Orthotropic Resistivity

Working with material data


You can export the complete material data to an external XML file. The following format is supported for export:

  • XML in WELSIM Material (MatML 3.1) schema.
  • JSON in WELSIM Material schema.
  • OpenRadioss input script