Description
Orthotropic 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 orthotropic linear elastic material. This is useful for laminated shells. One direction can be made softer than the other. Note that the angle and the thickness are defined when adding a material with this elasticity to a shell finite element as a layer.
#include <ChMaterialShellKirchhoff.h>
Public Member Functions | |
| ChElasticityKirchhoffOrthotropic (double m_E_x, double m_E_y, double m_nu_xy, double m_G_xy) | |
| Construct an orthotropic material. More... | |
| ChElasticityKirchhoffOrthotropic (double m_E, double m_nu) | |
| Construct an orthotropic material as sub case isotropic. More... | |
| double | Get_E_x () const |
| Return the elasticity moduli, on x. | |
| double | Get_E_y () const |
| Return the elasticity moduli, on y. | |
| double | Get_nu_xy () const |
| Return the Poisson ratio, for xy. | |
| double | Get_nu_yx () const |
| Return the Poisson ratio, for yx (follows xy as it must be nu_yx*E_x = nu_xy*E_y) | |
| double | Get_G_xy () const |
| Return the shear mod, in plane. | |
| virtual void | ComputeStress (ChVector<> &n, ChVector<> &m, const ChVector<> &eps, const ChVector<> &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 ChVector<> &eps, const ChVector<> &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
◆ ChElasticityKirchhoffOrthotropic() [1/2]
| chrono::fea::ChElasticityKirchhoffOrthotropic::ChElasticityKirchhoffOrthotropic | ( | double | m_E_x, |
| double | m_E_y, | ||
| double | m_nu_xy, | ||
| double | m_G_xy | ||
| ) |
Construct an orthotropic material.
- Parameters
-
m_E_x Young's modulus on x m_E_y Young's modulus on y m_nu_xy Poisson ratio xy (for yx it holds: nu_yx*E_x = nu_xy*E_y) m_G_xy Shear modulus, in plane
◆ ChElasticityKirchhoffOrthotropic() [2/2]
| chrono::fea::ChElasticityKirchhoffOrthotropic::ChElasticityKirchhoffOrthotropic | ( | double | m_E, |
| double | m_nu | ||
| ) |
Construct an orthotropic material as sub case isotropic.
- Parameters
-
m_E Young's modulus on x m_nu Poisson ratio
Member Function Documentation
◆ ComputeStiffnessMatrix()
|
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()
|
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
