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[Mohr-Coulomb] Add corner return for simultaneous tension-shear yielding #116

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[Mohr-Coulomb] Add corner return for simultaneous tension-shear yielding #116

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15 changes: 14 additions & 1 deletion include/materials/infinitesimal_strain/mohr_coulomb.h
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,19 @@ class MohrCoulomb : public InfinitesimalElastoPlastic<Tdim> {
inline double check_low(double val) {
return (val > 1.0e-15 ? val : 1.0e-15);
}
void update_softening_parameters(mpm::dense_map* state_vars);
std::tuple<Vector6d, double, bool> compute_single_surface_return(
mpm::mohrcoulomb::FailureState yield_type,
const Eigen::Matrix<double, 2, 1>& yield_function,
const Vector6d& current_stress,
const Matrix6x6& de,
mpm::dense_map* state_vars);

//! Compute corner return mapping for multi-surface failure
std::tuple<Vector6d, double, bool> compute_corner_return(
const Vector6d& current_stress,
const Matrix6x6& de,
mpm::dense_map* state_vars);

//! Density
double density_{std::numeric_limits<double>::max()};
Expand Down Expand Up @@ -171,4 +184,4 @@ class MohrCoulomb : public InfinitesimalElastoPlastic<Tdim> {

#include "mohr_coulomb.tcc"

#endif // MPM_MATERIAL_MOHR_COULOMB_H_
#endif // MPM_MATERIAL_MOHR_COULOMB_H_
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