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Motion Standalone Preprocessor C# library 2026 R1

Class MaterialAPI

Last update: 09.03.2026

Namespace: VM.API.Pre
Assembly: VM.API.Pre.dll

This class implements APIs for material class.

public static class MaterialAPI

Inheritance

object ← MaterialAPI

Extension Methods

LinkPropertyItemCache.GetLinkProperties(object, LinkPropertyType), LinkPropertyItemCache.GetLinkPropertiesAndValues(object, LinkPropertyType), LinkPropertyItemCache.GetLinkedObjects<T>(object, LinkPropertyType)

Methods

CreateArrudaBoyce(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
public static Obj CreateArrudaBoyce(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, ExpressionValueVariable mu, ExpressionValueVariable lambda, ExpressionValueVariable d)

Parameters

document IDocument

The document to create the arruda-boyce material.

name string

The name of the arruda-boyce material.

density ExpressionValueVariable

The density of the arruda-boyce material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

mu ExpressionValueVariable

The mu to set the elastic constant which is corresponding to the shear modulus in the linear material.

lambda ExpressionValueVariable

The lambda to set the locking stretch.

d ExpressionValueVariable

The d to set the incompressibility parameter to determine a penalty of the volume constraint.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio' values less than 0.

CreateArrudaBoyce(IDocument, string)

Create .

public static Obj CreateArrudaBoyce(this IDocument document, string name)

Parameters

document IDocument

The document to create the arruda-boyce material.

name string

The name of the arruda-boyce material.

Returns

Obj

The new object that is created by this API.

CreateFoam(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, ExpressionValueVariable, Obj?)

Create .

[NotNull(new string[] { "document" })]
public static Obj CreateFoam(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, ExpressionValueVariable youngsModulus, Obj? spline = null)

Parameters

document IDocument

The document to create the foam material.

name string

The name of the foam material.

density ExpressionValueVariable

The density of the foam material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

youngsModulus ExpressionValueVariable

The Young's modulus of the foam material.

spline Obj?

The spline to set the norminal strain-stress curve by using the spline picker.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio', 'youngsModulus' values less than 0.

ArgumentException

Will be thrown if the type of 'spline' is not .

CreateFoam(IDocument, string)

Create .

public static Obj CreateFoam(this IDocument document, string name)

Parameters

document IDocument

The document to create the foam material.

name string

The name of the foam material.

Returns

Obj

The new object that is created by this API.

CreateISO(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
[GreaterThanOrEqualToZero(new string[] { "youngsModulus", "thermalConductivity", "specificHeat" })]
[GreaterThanZero(new string[] { "shearModulus" })]
public static Obj CreateISO(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, ExpressionValueVariable youngsModulus, ExpressionValueVariable shearModulus, ExpressionValueVariable poissonRatio, ExpressionValueVariable thermalExpansionCoefficient, ExpressionValueVariable thermalConductivity, ExpressionValueVariable specificHeat, ExpressionValueVariable referenceTemperature)

Parameters

document IDocument

The document to create the iso material.

name string

The name of the iso material.

density ExpressionValueVariable

The density of the iso material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

youngsModulus ExpressionValueVariable

The Young's modulus of the iso material.

shearModulus ExpressionValueVariable

The shear modulus of the iso material.

poissonRatio ExpressionValueVariable

The Poisson's ratio of the iso material.

thermalExpansionCoefficient ExpressionValueVariable

The thermal expansion coefficient of the iso material.

thermalConductivity ExpressionValueVariable

The thermal conductivity of the iso material.

specificHeat ExpressionValueVariable

The specific heat of the iso material.

referenceTemperature ExpressionValueVariable

The initial temperature of the iso material.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio', 'youngsModulus', 'shearModulus', 'poissonRatio' values less than 0.

ArgumentOutOfRangeException

Will be thrown if 'poissonRatio' value is less than 0 or equal to 0.5 or more than 0.5.

CreateISO(IDocument, string)

Create .

public static Obj CreateISO(this IDocument document, string name)

Parameters

document IDocument

The document to create the iso material.

name string

The name of the iso material.

Returns

Obj

The new object that is created by this API.

CreateISONonlinearThermal(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, Obj, ExpressionValueVariable, Obj, Obj, Obj, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
[NotNullObj(new string[] { "youngsModulusSpline", "thermalExpansionCoefficientSpline", "thermalConductivitySpline", "specificHeatSpline" })]
[MatchTypeObj(new object[] { "youngsModulusSpline", typeof(ISpline), "thermalExpansionCoefficientSpline", typeof(ISpline), "thermalConductivitySpline", typeof(ISpline), "specificHeatSpline", typeof(ISpline) })]
public static Obj CreateISONonlinearThermal(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, Obj youngsModulusSpline, ExpressionValueVariable poissonRatio, Obj thermalExpansionCoefficientSpline, Obj thermalConductivitySpline, Obj specificHeatSpline, ExpressionValueVariable referenceTemperature)

Parameters

document IDocument

The document to create the iso nonlinear thermal material.

name string

The name of the iso nonlinear thermal material.

density ExpressionValueVariable

The density of the iso nonlinear thermal material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

youngsModulusSpline Obj

The Young's modulus spline of the iso nonlinear thermal material.

poissonRatio ExpressionValueVariable

The Poisson's ratio of the iso nonlinear thermal material.

thermalExpansionCoefficientSpline Obj

The thermal expansion coefficient spline of the iso nonlinear thermal material.

thermalConductivitySpline Obj

The thermal conductivity spline of the iso nonlinear thermal material.

specificHeatSpline Obj

The specific heat spline of the iso nonlinear thermal material.

referenceTemperature ExpressionValueVariable

The initial temperature of the iso nonlinear thermal material.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio', 'poissonRatio' values less than 0.

ArgumentOutOfRangeException

Will be thrown if 'poissonRatio' value is less than 0 or equal to 0.5 or more than 0.5.

CreateISONonlinearThermal(IDocument, string, Obj, Obj, Obj, Obj)

Create .

public static Obj CreateISONonlinearThermal(this IDocument document, string name, Obj youngsModulusSpline, Obj thermalExpansionCoefficientSpline, Obj thermalConductivitySpline, Obj specificHeatSpline)

Parameters

document IDocument

The document to create the iso nonlinear thermal material.

name string

The name of the iso nonlinear thermal material.

youngsModulusSpline Obj

The Young's modulus spline of the iso nonlinear thermal material.

thermalExpansionCoefficientSpline Obj

The thermal expansion coefficient spline of the iso nonlinear thermal material.

thermalConductivitySpline Obj

The thermal conductivity spline of the iso nonlinear thermal material.

specificHeatSpline Obj

The specific heat spline of the iso nonlinear thermal material.

Returns

Obj

The new object that is created by this API.

CreateMooneyRivlin(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
public static Obj CreateMooneyRivlin(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, ExpressionValueVariable c10, ExpressionValueVariable c01, ExpressionValueVariable d)

Parameters

document IDocument

The document to create the mooney-rivlin material.

name string

The name of the mooney-rivlin material.

density ExpressionValueVariable

The density of the mooney-rivlin material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

c10 ExpressionValueVariable

The c10 to set the elastic constant which is corresponding to the Young’s modulus in the linear material.

c01 ExpressionValueVariable

The c01 to set the 2nd elastic constant which is corresponding to the Young’s modulus in the linear material.

d ExpressionValueVariable

The d to set the incompressibility parameter to determine a penalty of the volume constraint.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio', 'c10' 'c01' values less than 0. Will be thrown if 'd' value equal to or less than 0. Will be thrown if 'd' value greater than 1.

CreateMooneyRivlin(IDocument, string)

Create .

public static Obj CreateMooneyRivlin(this IDocument document, string name)

Parameters

document IDocument

The document to create the mooney-rivlin material.

name string

The name of the mooney-rivlin material.

Returns

Obj

The new object that is created by this API.

CreateNeoHookean(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, ExpressionValueVariable, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
public static Obj CreateNeoHookean(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, ExpressionValueVariable c10, ExpressionValueVariable d)

Parameters

document IDocument

The document to create the neo-hookean material.

name string

The name of the neo-hookean material.

density ExpressionValueVariable

The density of the neo-hookean material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

c10 ExpressionValueVariable

The c10 to set the elastic constant which is corresponding to the Young’s modulus in the linear material.

d ExpressionValueVariable

The d to set the incompressibility parameter to determine a penalty of the volume constraint.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio', 'c10' values less than 0.

CreateNeoHookean(IDocument, string)

Create .

public static Obj CreateNeoHookean(this IDocument document, string name)

Parameters

document IDocument

The document to create the neo-hookean material.

name string

The name of the neo-hookean material.

Returns

Obj

The new object that is created by this API.

CreateORTHO(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
[GreaterThanOrEqualToZero(new string[] { "youngsModulusX", "youngsModulusY", "youngsModulusZ" })]
[GreaterThanZero(new string[] { "shearModulusXY", "shearModulusYZ", "shearModulusXZ" })]
public static Obj CreateORTHO(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, ExpressionValueVariable youngsModulusX, ExpressionValueVariable youngsModulusY, ExpressionValueVariable youngsModulusZ, ExpressionValueVariable poissonRatioXY, ExpressionValueVariable poissonRatioYZ, ExpressionValueVariable poissonRatioXZ, ExpressionValueVariable shearModulusXY, ExpressionValueVariable shearModulusYZ, ExpressionValueVariable shearModulusXZ)

Parameters

document IDocument

The document to create the orthotropic material.

name string

The name of the orthotropic material.

density ExpressionValueVariable

The density of the orthotropic material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

youngsModulusX ExpressionValueVariable

The Young's modulus of x-direction of the orthotropic material.

youngsModulusY ExpressionValueVariable

The Young's modulus of y-direction of the orthotropic material.

youngsModulusZ ExpressionValueVariable

The Young's modulus of z-direction of the orthotropic material.

poissonRatioXY ExpressionValueVariable

The xy-Poisson’s ratio of the orthotropic material.

poissonRatioYZ ExpressionValueVariable

The yz-Poisson’s ratio of the orthotropic material.

poissonRatioXZ ExpressionValueVariable

The xz-Poisson’s ratio of the orthotropic material.

shearModulusXY ExpressionValueVariable

The xy-Shear modulus of the orthotropic material.

shearModulusYZ ExpressionValueVariable

The yz-Shear modulus of the orthotropic material.

shearModulusXZ ExpressionValueVariable

The xz-Shear modulus of the orthotropic material.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio', 'youngsModulusX', 'youngsModulusY', 'youngsModulusZ', 'poissonRatioXY', 'poissonRatioYZ', 'poissonRatioXZ', 'shearModulusXY', 'shearModulusYZ', 'shearModulusXZ' values less than 0.

ArgumentOutOfRangeException

Will be thrown if 'poissonRatioXY', 'poissonRatioYZ', 'poissonRatioXZ' value is less than 0 or equal to 0.5 or more than 0.5.

CreateORTHO(IDocument, string)

Create .

public static Obj CreateORTHO(this IDocument document, string name)

Parameters

document IDocument

The document to create the orthotropic material.

name string

The name of the orthotropic material.

Returns

Obj

The new object that is created by this API.

CreateOgden(IDocument, string, ExpressionValueVariable, ExpressionValueVariable, bool, IEnumerable<OgdenContents>)

Create .

[NotNull(new string[] { "document" })]
public static Obj CreateOgden(this IDocument document, string name, ExpressionValueVariable density, ExpressionValueVariable dampingRatio, bool disableHScaleFactor, IEnumerable<OgdenContents> ogdenContents = null)

Parameters

document IDocument

The document to create the ogden material.

name string

The name of the ogden material.

density ExpressionValueVariable

The density of the ogden material.

dampingRatio ExpressionValueVariable

The stiffness proportional damping ratio for the nodal flexible and EasyFlex bodies.

disableHScaleFactor bool

A value indicating whether to disable H Scale factor or not.

ogdenContents IEnumerable<OgdenContents>

The ogden contents array.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'density', 'dampingRatio' values less than 0.

CreateOgden(IDocument, string)

Create .

public static Obj CreateOgden(this IDocument document, string name)

Parameters

document IDocument

The document to create the ogden material.

name string

The name of the ogden material.

Returns

Obj

The new object that is created by this API.

CreatePlasticBilinear(IDocument, string, Obj, ExpressionValueVariable, ExpressionValueVariable, ExpressionValueVariable)

Create .

[NotNull(new string[] { "document" })]
[NotNullObj(new string[] { "linearMaterial" })]
[MatchTypeObj(new object[] { "linearMaterial", typeof(ISO) })]
public static Obj CreatePlasticBilinear(this IDocument document, string name, Obj linearMaterial, ExpressionValueVariable et, ExpressionValueVariable initialYieldingStress, ExpressionValueVariable linearKinematicHardening)

Parameters

document IDocument

The document to create the plastic bi-linear material.

name string

The name of the plastic bi-linear material.

linearMaterial Obj

The linear elastic material.

et ExpressionValueVariable

The plastic hardening modulus.

initialYieldingStress ExpressionValueVariable

The initial yielding stress.

linearKinematicHardening ExpressionValueVariable

The hardening type.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'plasticHardeningModulus', 'initialYieldingStress', 'hardeningParameter' values less than 0.

CreatePlasticBilinear(IDocument, string, Obj)

Create .

public static Obj CreatePlasticBilinear(this IDocument document, string name, Obj linearMaterial)

Parameters

document IDocument

The document to create the plastic bi-linear material.

name string

The name of the plastic bi-linear material.

linearMaterial Obj

The linear elastic material.

Returns

Obj

The new object that is created by this API.

CreatePlasticMultilinear(IDocument, string, Obj, ExpressionValueVariable, ExpressionValueVariable, Obj?)

Create .

[NotNull(new string[] { "document" })]
[NotNullObj(new string[] { "linearMaterial" })]
[MatchTypeObj(new object[] { "linearMaterial", typeof(ISO) })]
public static Obj CreatePlasticMultilinear(this IDocument document, string name, Obj linearMaterial, ExpressionValueVariable initialYieldingStress, ExpressionValueVariable linearKinematicHardening, Obj? spline = null)

Parameters

document IDocument

The document to create the plastic multi-linear material.

name string

The name of the plastic multi-linear material.

linearMaterial Obj

The linear elastic material.

initialYieldingStress ExpressionValueVariable

The initial yielding stress.

linearKinematicHardening ExpressionValueVariable

The hardening type.

spline Obj?

.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'document' is null.

ArgumentOutOfRangeException

Will be thrown if 'plasticHardeningModulus', 'initialYieldingStress', 'hardeningParameter' values less than 0.

ArgumentException

Will be thrown if the type of 'spline' is not .

CreatePlasticMultilinear(IDocument, string, Obj)

Create .

public static Obj CreatePlasticMultilinear(this IDocument document, string name, Obj linearMaterial)

Parameters

document IDocument

The document to create the plastic multi-linear material.

name string

The name of the plastic multi-linear material.

linearMaterial Obj

The linear elastic material.

Returns

Obj

The new object that is created by this API.

CreateSplineForMaterial(Obj, IEnumerable<Point>)

Create spline for material.

[NotNullObj(new string[] { "material" })]
public static Obj CreateSplineForMaterial(this Obj material, IEnumerable<SplineData.Point> data)

Parameters

material Obj

The material to be updated.

data IEnumerable<SplineData.Point>

The data of spline X, Y.

Returns

Obj

The new object that is created by this API.

Exceptions

ArgumentNullException

Will be thrown if 'material' arguments are empty.

ArgumentException

Will be thrown if 'material' argument is not empty and type of 'body' is not SolidBody or Body.

ArgumentException

Will be thrown if the type of 'material' is not and .

ArgumentException

Will be thrown if the document type of 'material' is not .

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