b2plasticity_von_mises_yield_criterion_linear_hardening.H

//------------------------------------------------------------------------
// b2plasticity_von_mises_yield_criterion_linear_hardening.H --
//
//
// written by Mathias Doreille
//
// Copyright (c) 2007-2012 SMR Engineering & Development SA
//               2502 Bienne, Switzerland
//
// All Rights Reserved.  Proprietary source code.  The contents of
// this file may not be disclosed to third parties, copied or
// duplicated in any form, in whole or in part, without the prior
// written permission of SMR.
//------------------------------------------------------------------------
 
#ifndef B2PLASTICITY_VON_MISES_YIELD_CRITERION_LINEAR_HARDENING_H_
#define B2PLASTICITY_VON_MISES_YIELD_CRITERION_LINEAR_HARDENING_H_
 
#include <algorithm>
 
#include "utils/b2type.H"
 
namespace b2000 {
 
class PlasticityVonMisesYieldCriterionLinearHardening {
public:
    PlasticityVonMisesYieldCriterionLinearHardening() : yield_stress(-1) {
        std::fill_n(effective_plastic_strain, 6, 0);
    }
 
    void get_stress(
          const double E, const double P, const double initial_yield_stress, const double hardening,
          const double strain[6], const EquilibriumSolution equilibrium_solution, double stress[6],
          double d_stress_d_strain[21]);
 
    void get_effective_plastic_strain(double eps[6], double& yield_stress_) {
        std::copy(effective_plastic_strain, effective_plastic_strain + 6, eps);
        yield_stress_ = yield_stress;
    }
 
private:
    double yield_stress;
    double effective_plastic_strain[6];
};
 
}  // namespace b2000
 
#endif /*B2PLASTICITY_VON_MISES_YIELD_CRITERION_LINEAR_HARDENING_H_*/