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damaged_weight_function_inline_impl.hh
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Thu, May 16, 07:06

damaged_weight_function_inline_impl.hh
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/**
* @file damaged_weight_function_inline_impl.hh
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Cyprien Wolff <cyprien.wolff@epfl.ch>
*
* @date creation: Mon Aug 24 2015
* @date last modification: Fri Jan 15 2016
*
* @brief Implementation of inline function of damaged weight function
*
*
* @section LICENSE
*
* Copyright (©) 2015-2021 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "damaged_weight_function.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
inline Real DamagedWeightFunction::operator()(Real r,
const __attribute__((unused))
IntegrationPoint & q1,
const IntegrationPoint & q2) {
/// compute the weight
UInt quad = q2.global_num;
Array<Real> & dam_array = (*this->damage)(q2.type, q2.ghost_type);
Real D = dam_array(quad);
Real Radius_t = 0;
Real Radius_init = this->R2;
// if(D <= 0.5)
// {
// Radius_t = 2*D*Radius_init;
// }
// else
// {
// Radius_t = 2*Radius_init*(1-D);
// }
//
Radius_t = Radius_init * (1 - D);
Radius_init *= Radius_init;
Radius_t *= Radius_t;
if (Radius_t < Math::getTolerance()) {
Radius_t = 0.001 * Radius_init;
}
Real expb =
(2 * std::log(0.51)) / (std::log(1.0 - 0.49 * Radius_t / Radius_init));
Int expb_floor = std::floor(expb);
Real b = expb_floor + expb_floor % 2;
Real alpha = std::max(0., 1. - r * r / Radius_init);
Real w = std::pow(alpha, b);
return w;
}
/* -------------------------------------------------------------------------- */
inline void DamagedWeightFunction::init() {
this->damage = &(this->manager.registerWeightFunctionInternal("damage"));
}
} // namespace akantu

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