chrono::fea::ChContinuumElastic Class Reference

## Description

Class for the basic properties of materials in an elastic continuum.

This is a base material with isotropic hookean elasticity.

#include <ChContinuumMaterial.h>

Inheritance diagram for chrono::fea::ChContinuumElastic:
Collaboration diagram for chrono::fea::ChContinuumElastic:

## Public Member Functions

ChContinuumElastic (double young=10000000, double poisson=0.4, double density=1000)

ChContinuumElastic (const ChContinuumElastic &other)

void SetYoungModulus (double E)
Set the Young elastic modulus, in Pa (N/m^2), as the ratio of the uniaxial stress over the uniaxial strain, for hookean materials.

double GetYoungModulus () const
Get the Young elastic modulus, in Pa (N/m^2).

void SetPoissonRatio (double v)
Set the Poisson ratio, as v=-transverse_strain/axial_strain, so takes into account the 'squeezing' effect of materials that are pulled. More...

double GetPoissonRatio () const
Get the Poisson ratio, as v=-transverse_strain/axial_strain.

void SetShearModulus (double G)
Set the shear modulus G, in Pa (N/m^2). More...

double GetShearModulus () const
Get the shear modulus G, in Pa (N/m^2)

double GetLameFirstParam () const
Get LamÃ© first parameter (the second is shear modulus, so GetShearModulus() )

double GetBulkModulus () const
Get bulk modulus (increase of pressure for decrease of volume), in Pa.

double GetPWaveModulus () const
Get P-wave modulus (if V=speed of propagation of a P-wave, then (M/density)=V^2 )

void ComputeStressStrainMatrix ()
Computes Elasticity matrix and stores the value in this->StressStrainMatrix Note: is performed every time you change a material parameter.

ChMatrixDynamicGetStressStrainMatrix ()
Get the Elasticity matrix.

void ComputeElasticStress (ChStressTensor<> &stress, const ChStrainTensor<> &strain) const
Compute elastic stress from elastic strain (using column tensors, in Voight notation)

void ComputeElasticStrain (ChStrainTensor<> &strain, const ChStressTensor<> &stress) const
Compute elastic strain from elastic stress (using column tensors, in Voight notation)

void SetRayleighDampingAlpha (double alpha)
Set the Rayleigh mass-proportional damping factor alpha, to build damping R as R=alpha*M + beta*K.

double GetRayleighDampingAlpha () const
Set the Rayleigh mass-proportional damping factor alpha, in R=alpha*M + beta*K.

void SetRayleighDampingBeta (double beta)
Set the Rayleigh stiffness-proportional damping factor beta, to build damping R as R=alpha*M + beta*K.

double GetRayleighDampingBeta () const
Set the Rayleigh stiffness-proportional damping factor beta, in R=alpha*M + beta*K.

virtual void ArchiveOut (ChArchiveOut &archive_out) override

virtual void ArchiveIn (ChArchiveIn &archive_in) override

Public Member Functions inherited from chrono::fea::ChContinuumMaterial
ChContinuumMaterial (double density=1000)

ChContinuumMaterial (const ChContinuumMaterial &other)

void SetDensity (double density)
Set the density of the material, in kg/m^2.

double GetDensity () const
Get the density of the material, in kg/m^2.

## Additional Inherited Members

Protected Attributes inherited from chrono::fea::ChContinuumMaterial
double m_density

## ◆ SetPoissonRatio()

 void chrono::fea::ChContinuumElastic::SetPoissonRatio ( double v )

Set the Poisson ratio, as v=-transverse_strain/axial_strain, so takes into account the 'squeezing' effect of materials that are pulled.

Note: v=0.5 means perfectly incompressible material, that could give problems with some type of solvers. Setting v also changes G.

## ◆ SetShearModulus()

 void chrono::fea::ChContinuumElastic::SetShearModulus ( double G )

Set the shear modulus G, in Pa (N/m^2).

Setting G also changes Poisson ratio v.

The documentation for this class was generated from the following files:
• /builds/uwsbel/chrono/src/chrono/fea/ChContinuumMaterial.h
• /builds/uwsbel/chrono/src/chrono/fea/ChContinuumMaterial.cpp