hardening_input.cpp

// Copyright (c) Lawrence Livermore National Security, LLC and
// other Serac Project Developers. See the top-level LICENSE file for
// details.
//
// SPDX-License-Identifier: (BSD-3-Clause)
 
#include <string>
 
#include "serac/physics/materials/hardening_input.hpp"
#include "serac/physics/materials/solid_material.hpp"
 
namespace serac {
 
void HardeningInputOptions::defineInputFileSchema(axom::inlet::Container& container)
{
  // Shared between both hardening laws
  container.addString("law", "Name of the hardening law (e.g. PowerLawHardening)").required(true);
  container.addDouble("sigma_y", "Yield strength");
  container.addDouble("eta", "Plastic viscosity");
 
  // PowerLawHardening
  container.addDouble("n", "Hardening index in reciprocal form");
  container.addDouble("eps0", "Reference value of accumulated plastic strain");
 
  // VoceHardening
  container.addDouble("sigma_sat", "Saturation value of flow strength");
  container.addDouble("strain_constant", "Constant dictating how fast the exponential decays");
 
  // Verify
  container.registerVerifier([](const axom::inlet::Container& c) -> bool {
    axom::inlet::InletType double_type = axom::inlet::InletType::Double;
    bool sigma_y_present = c.contains("sigma_y") && (c["sigma_y"].type() == double_type);
    bool n_present = c.contains("n") && (c["n"].type() == double_type);
    bool eps0_present = c.contains("eps0") && (c["eps0"].type() == double_type);
    bool sigma_sat_present = c.contains("sigma_sat") && (c["sigma_sat"].type() == double_type);
    bool strain_constant_present = c.contains("strain_constant") && (c["strain_constant"].type() == double_type);
    bool eta_present = c.contains("eta") && (c["eta"].type() == double_type);
 
    std::string law = c["law"];
    if (law == "PowerLawHardening") {
      return sigma_y_present && n_present && eps0_present && eta_present && !sigma_sat_present && !sigma_sat_present;
    } else if (law == "VoceHardening") {
      return sigma_y_present && eta_present && !n_present && !eps0_present && sigma_sat_present &&
             strain_constant_present;
    }
 
    return false;
  });
}
 
}  // namespace serac
 
serac::var_hardening_t FromInlet<serac::var_hardening_t>::operator()(const axom::inlet::Container& base)
{
  serac::var_hardening_t result;
  std::string law = base["law"];
  if (law == "PowerLawHardening") {
    result = serac::solid_mechanics::PowerLawHardening{
        .sigma_y = base["sigma_y"], .n = base["n"], .eps0 = base["eps0"], .eta = base["eta"]};
  } else if (law == "VoceHardening") {
    result = serac::solid_mechanics::VoceHardening{.sigma_y = base["sigma_y"],
                                                   .sigma_sat = base["sigma_sat"],
                                                   .strain_constant = base["strain_constant"],
                                                   .eta = base["eta"]};
  }
  return result;
}