getfem_plasticity.h File Reference

Plasticty bricks. More...

#include "getfem_models.h"
#include "getfem_assembling_tensors.h"
#include "getfem_derivatives.h"
#include "getfem_interpolation.h"
#include "gmm/gmm_dense_qr.h"

Go to the source code of this file.

Classes
class	getfem::abstract_constraints_projection
	Abstract projection of a stress tensor onto a set of admissible stress tensors. More...
class	getfem::VM_projection
	Von Mises projection. More...

Namespaces
	getfem
	GEneric Tool for Finite Element Methods.

Functions
size_type	getfem::add_small_strain_elastoplasticity_brick (model &md, const mesh_im &mim, std::string lawname, plasticity_unknowns_type unknowns_type, const std::vector< std::string > &varnames, const std::vector< std::string > &params, size_type region=size_type(-1))
	Adds a small strain plasticity term to the model md. More...
void	getfem::small_strain_elastoplasticity_next_iter (model &md, const mesh_im &mim, std::string lawname, plasticity_unknowns_type unknowns_type, const std::vector< std::string > &varnames, const std::vector< std::string > &params, size_type region=size_type(-1))
	Function that allows to pass from a time step to another for the small strain plastic brick. More...
void	getfem::compute_small_strain_elastoplasticity_Von_Mises (model &md, const mesh_im &mim, std::string lawname, plasticity_unknowns_type unknowns_type, const std::vector< std::string > &varnames, const std::vector< std::string > &params, const mesh_fem &mf_vm, model_real_plain_vector &VM, size_type region=size_type(-1))
	This function computes the Von Mises stress field with respect to a small strain elastoplasticity term, approximated on mf_vm, and stores the result into VM. More...
void	getfem::ga_define_linear_hardening_function (const std::string &name, scalar_type sigma_y0, scalar_type H, bool frobenius=true)
	Add a linear function with the name specified by name to represent linear isotropoc hardening in plasticity with initial yield limit sigma_y0 and hardening modulus H. More...
void	getfem::ga_define_Ramberg_Osgood_hardening_function (const std::string &name, scalar_type sigma_ref, scalar_type eps_ref, scalar_type n, bool frobenius=false)
	Add a Ramberg-Osgood hardening function with the name specified by name, for reference stress and strain given by sigma_ref and eps_ref respectively and for a hardening exponent n. More...
void	getfem::ga_define_Ramberg_Osgood_hardening_function (const std::string &name, scalar_type sigma_ref, scalar_type E, scalar_type alpha, scalar_type n, bool frobenius=false)
	Add a Ramberg-Osgood hardening function with the name specified by name, for reference stress sigma_ref, Young's modulus E, offset parameter alpha and hardening parameter n. More...
size_type	getfem::add_finite_strain_elastoplasticity_brick (model &md, const mesh_im &mim, std::string lawname, plasticity_unknowns_type unknowns_type, const std::vector< std::string > &varnames, const std::vector< std::string > &params, size_type region=size_type(-1))
	Add a finite strain elastoplasticity brick to the model. More...
void	getfem::finite_strain_elastoplasticity_next_iter (model &md, const mesh_im &mim, std::string lawname, plasticity_unknowns_type unknowns_type, const std::vector< std::string > &varnames, const std::vector< std::string > &params, size_type region=size_type(-1))
	This function permits to update the state variables for a finite strain elastoplasticity brick, based on the current displacements and plastic multiplier fields (optionally also the the pressure field in the case of a mixed displacement-pressure formulation). More...
void	getfem::compute_finite_strain_elastoplasticity_Von_Mises (model &md, const mesh_im &mim, std::string lawname, plasticity_unknowns_type unknowns_type, const std::vector< std::string > &varnames, const std::vector< std::string > &params, const mesh_fem &mf_vm, model_real_plain_vector &VM, size_type region=size_type(-1))
	This function computes the Von Mises stress field with respect to a finite strain elastoplasticity term, approximated on mf_vm, and stores the result into VM. More...
size_type	getfem::add_elastoplasticity_brick (model &md, const mesh_im &mim, const pconstraints_projection &ACP, const std::string &varname, const std::string &previous_dep_name, const std::string &datalambda, const std::string &datamu, const std::string &datathreshold, const std::string &datasigma, size_type region=size_type(-1))
	Add a nonlinear elastoplasticity term to the model for small deformations and an isotropic material, with respect to the variable varname. More...
void	getfem::elastoplasticity_next_iter (model &md, const mesh_im &mim, const std::string &varname, const std::string &previous_dep_name, const pconstraints_projection &ACP, const std::string &datalambda, const std::string &datamu, const std::string &datathreshold, const std::string &datasigma)
	This function permits to compute the new stress constraints values supported by the material after a load or an unload. More...
void	getfem::compute_elastoplasticity_Von_Mises_or_Tresca (model &md, const std::string &datasigma, const mesh_fem &mf_vm, model_real_plain_vector &VM, bool tresca)
	This function computes on mf_vm the Von Mises or Tresca stress of a field for elastoplasticity and return it into the vector VM. More...
void	getfem::compute_plastic_part (model &md, const mesh_im &mim, const mesh_fem &mf_pl, const std::string &varname, const std::string &previous_dep_name, const pconstraints_projection &ACP, const std::string &datalambda, const std::string &datamu, const std::string &datathreshold, const std::string &datasigma, model_real_plain_vector &plast)
	This function computes on mf_pl the plastic part, that could appear after a load and an unload, into the vector plast. More...

Detailed Description

Plasticty bricks.

Author

Yves Renard Yves..nosp@m.Rena.nosp@m.rd@in.nosp@m.sa-l.nosp@m.yon.f.nosp@m.r,

Julien Pommier Julie.nosp@m.n.Po.nosp@m.mmier.nosp@m.@ins.nosp@m.a-tou.nosp@m.lous.nosp@m.e.fr

Amandine Cottaz

Date

June 2, 2010.

Definition in file getfem_plasticity.h.