chrono::fea::ChElasticityKirchhoffIsothropic Class Reference

Description

Isothropic elasticity for thin shells (Kirchoff-Love shell theory, without shear effects) to be used in a ChMaterialShellKirchhoff.

This class implements material properties for a layer of a Kirchhoff thin shell, for the case of isotropic linear elastic material. This is probably the material that you need most often when using thin shells.

#include <ChMaterialShellKirchhoff.h>

Inheritance diagram for chrono::fea::ChElasticityKirchhoffIsothropic:

Collaboration diagram for chrono::fea::ChElasticityKirchhoffIsothropic:

Public Member Functions
	ChElasticityKirchhoffIsothropic (double E, double nu)
	Construct an isotropic material. More...
double	GetYoungModulus () const
	Return the elasticity moduli.
double	GetPoissonRatio () const
	Return the Poisson ratio.
virtual void	ComputeStress (ChVector3d &n, ChVector3d &m, const ChVector3d &eps, const ChVector3d &kur, const double z_inf, const double z_sup, const double angle) override
	The FE code will evaluate this function to compute per-unit-length forces/torques given the strains/curvatures. More...
virtual void	ComputeStiffnessMatrix (ChMatrixRef mC, const ChVector3d &eps, const ChVector3d &kur, const double z_inf, const double z_sup, const double angle) override
	Compute 12x12 stiffness matrix [Km] , that is [ds/de], the tangent of the constitutive relation per-unit-length forces/torques vs generalized strains. More...

Additional Inherited Members
Public Attributes inherited from chrono::fea::ChElasticityKirchhoff
ChMaterialShellKirchhoff *	section

Constructor & Destructor Documentation

ChElasticityKirchhoffIsothropic()

chrono::fea::ChElasticityKirchhoffIsothropic::ChElasticityKirchhoffIsothropic	(	double	E,
		double	nu
	)

Construct an isotropic material.

Parameters

E	Young's modulus
nu	Poisson ratio

Member Function Documentation

ComputeStiffnessMatrix()

void chrono::fea::ChElasticityKirchhoffIsothropic::ComputeStiffnessMatrix ( ChMatrixRef  mC, const ChVector3d &  eps, const ChVector3d &  kur, const double  z_inf, const double  z_sup, const double  angle  )

overridevirtual

Compute 12x12 stiffness matrix [Km] , that is [ds/de], the tangent of the constitutive relation per-unit-length forces/torques vs generalized strains.

Parameters

mC	tangent matrix
eps	strains e_11, e_22, e_12
kur	curvature k_11, k_22, k_12
z_inf	layer lower z value (along thickness coord)
z_sup	layer upper z value (along thickness coord)
angle	layer angle respect to x (if needed)

Reimplemented from chrono::fea::ChElasticityKirchhoff.

ComputeStress()

void chrono::fea::ChElasticityKirchhoffIsothropic::ComputeStress ( ChVector3d &  n, ChVector3d &  m, const ChVector3d &  eps, const ChVector3d &  kur, const double  z_inf, const double  z_sup, const double  angle  )

overridevirtual

The FE code will evaluate this function to compute per-unit-length forces/torques given the strains/curvatures.

Parameters

n	forces n_11, n_22, n_12 (per unit length)
m	torques m_11, m_22, m_12 (per unit length)
eps	strains e_11, e_22, e_12
kur	curvature k_11, k_22, k_12
z_inf	layer lower z value (along thickness coord)
z_sup	layer upper z value (along thickness coord)
angle	layer angle respect to x (if needed) -not used in this, isotropic

Implements chrono::fea::ChElasticityKirchhoff.

---

The documentation for this class was generated from the following files:

• /builds/uwsbel/chrono/src/chrono/fea/ChMaterialShellKirchhoff.h
• /builds/uwsbel/chrono/src/chrono/fea/ChMaterialShellKirchhoff.cpp