*SetMaterialProperty() - Hyper Elastic - Neo-Hookean

Sets the Hyper Elastic Neo-Hookean material property for an NLFE body.

Syntax

*SetMaterialProperty(varname, neo_hookean_type, shear,poisson_ratio, 
density_rho)

Arguments

varname
The variable name of the material property.
Data type: varname
neo_hookean_type
Valid values are NHI and NHC.
Data type: keyword
shear
Shear modulus.
Data type: real
poisson_ratio
Poisson's ratio.
Data type: real
density_rho
The material density.
Data type: real

Example

In the example below a material property is defined as Hyper Elastic Neo-Hookean Incompressible and is referenced by a NLFE body.
*BeginMDL( the_model, "Model", )
 *StandardInclude(FILE)
 *SetCurrentSolverMode(MotionSolve)
 *Point( p_0, "Point 0" )
 *Point( p_1, "Point 1" )
 *Point( p_2, "Point 2" )
 *Point( p_3, "Point 3" )
 *Point( p_4, "Point 4" )
 *NLFEBody( nlfeb_0, "LDBody 0", POINT p_0, p_1, p_2, p_3, p_4 )
 *MaterialProperty( propmat_RubberNHI, "RubberNHI", HYPER )
 
*SetMaterialProperty( propmat_RubberNHI, NHI, 0.0006, 0.55, 1e-06 )
 *SetPoint( p_1, 10 )
 *SetPoint( p_2, 20 )
 *SetPoint( p_3, 30 )
 *SetPoint( p_4, 40 )
 *SetNLFEBody( nlfeb_0, BEAM, ROD, 20, 10, 0.01, propmat_RubberNHI, 2, 5, 16 )
 
*EndMDL()

Context

*BeginMdl()

*DefineSystem()

*DefineAssembly()

*BeginContext()

Comments

This statement is used to set the property for a Hyper Elastic material with Neo-Hookean model. It can only be used when a material is defined using a *MaterialProperty() statement with the type as HYPER.

The keyword NHI refers to Neo-Hookean Incompressible model, while NHC refers to Neo-Hookean Compressible model.

All property values should be specified in kg-newton-mm-second units system.