Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #pragma once
      11             : 
      12             : #include "CappedMohrCoulombStressUpdate.h"
      13             : 
      14             : /**
      15             :  * CappedMohrCoulombCosseratStressUpdate implements rate-independent nonassociative
      16             :  * Mohr-Coulomb plus tensile plus compressive plasticity with hardening/softening
      17             :  * in the Cosserat setting.  The Mohr-Coulomb plasticity considers the symmetric
      18             :  * part of the stress tensor only, and uses an isotropic elasticity tensor that
      19             :  * is input by the user (the anti-symmetric parts of the stress tensor and the
      20             :  * moment-stress tensor are not included in this plastic model, and any non-isometric
      21             :  * parts of the elasticity tensor are ignored in the flow rule).
      22             :  */
      23             : class CappedMohrCoulombCosseratStressUpdate : public CappedMohrCoulombStressUpdate
      24             : {
      25             : public:
      26             :   static InputParameters validParams();
      27             : 
      28             :   CappedMohrCoulombCosseratStressUpdate(const InputParameters & parameters);
      29             : 
      30             :   /**
      31             :    * The full elasticity tensor may be anisotropic, and usually is in the case
      32             :    * of layered Cosserat.  However, this class only uses the isotropic parts of
      33             :    * it (corresponding to the "host" material) that are encoded in _host_young
      34             :    * and _host_poisson
      35             :    */
      36         198 :   bool requiresIsotropicTensor() override { return false; }
      37             : 
      38             : protected:
      39             :   /// Young's modulus of the host material
      40             :   const Real _host_young;
      41             : 
      42             :   /// Poisson's of the host material
      43             :   const Real _host_poisson;
      44             : 
      45             :   /// E0011 = Lame lambda modulus of the host material
      46             :   const Real _host_E0011;
      47             : 
      48             :   /// E0000 = Lame lambda + 2 * shear modulus of the host material
      49             :   const Real _host_E0000;
      50             : 
      51             :   virtual void setStressAfterReturnV(const RankTwoTensor & stress_trial,
      52             :                                      const std::vector<Real> & stress_params,
      53             :                                      Real gaE,
      54             :                                      const std::vector<Real> & intnl,
      55             :                                      const yieldAndFlow & smoothed_q,
      56             :                                      const RankFourTensor & Eijkl,
      57             :                                      RankTwoTensor & stress) const override;
      58             : 
      59             :   virtual void preReturnMapV(const std::vector<Real> & trial_stress_params,
      60             :                              const RankTwoTensor & stress_trial,
      61             :                              const std::vector<Real> & intnl_old,
      62             :                              const std::vector<Real> & yf,
      63             :                              const RankFourTensor & Eijkl) override;
      64             : 
      65             :   void setEffectiveElasticity(const RankFourTensor & Eijkl) override;
      66             : 
      67             :   virtual void consistentTangentOperatorV(const RankTwoTensor & stress_trial,
      68             :                                           const std::vector<Real> & trial_stress_params,
      69             :                                           const RankTwoTensor & stress,
      70             :                                           const std::vector<Real> & stress_params,
      71             :                                           Real gaE,
      72             :                                           const yieldAndFlow & smoothed_q,
      73             :                                           const RankFourTensor & Eijkl,
      74             :                                           bool compute_full_tangent_operator,
      75             :                                           const std::vector<std::vector<Real>> & dvar_dtrial,
      76             :                                           RankFourTensor & cto) override;
      77             : };