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material_vreepeerlings.hh
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			/**
			* @file material_vreepeerlings.hh
			*
			* @author Cyprien Wolff <cyprien.wolff@epfl.ch>
			*
			* @date Fri Feb 24 14:27:15 2012
			*
			* @brief Specialization of the material class for the VreePeerlings material
			*
			* @section LICENSE
			*
			* Copyright (©) 2010-2011 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 "aka_common.hh"
			#include "material_damage.hh"
			/* -------------------------------------------------------------------------- */

			#ifndef __AKANTU_MATERIAL_VREEPEERLINGS_HH__
			#define __AKANTU_MATERIAL_VREEPEERLINGS_HH__

			__BEGIN_AKANTU__

			/**
			* Material vreepeerlings
			*
			* parameters in the material files :
			* - Kapaoi : (default: 0.0001) Initial threshold (of the equivalent strain) >= Crate
			* - Kapac : (default: 0.0002) Final threshold (of the equivalent strain)
			* - Arate : (default: 1.) Fitting parameter (must be close to 1 to do tend to 0 the stress in the damaged element)
			* - Brate : (default: 1.) This parameter determines the rate at which the damage grows
			* - Crate : (default: 0.0001) This parameter determines the rate at which the damage grows
			* - Kct : (default: 1.) Ratio between compressive and tensile strength
			*/
			template<UInt spatial_dimension, template <UInt> class MatParent = MaterialElastic>
			class MaterialVreePeerlings : public MaterialDamage<spatial_dimension,
			MatParent> {
			/* ------------------------------------------------------------------------ */
			/* Constructors/Destructors */
			/* ------------------------------------------------------------------------ */
			public:
			typedef MaterialDamage<spatial_dimension,
			MatParent> MaterialVreePeerlingsParent;
			MaterialVreePeerlings(SolidMechanicsModel & model, const ID & id = "");

			virtual ~MaterialVreePeerlings() {};

			/* ------------------------------------------------------------------------ */
			/* Methods */
			/* ------------------------------------------------------------------------ */
			public:

			void initMaterial();

			/// constitutive law for all element of a type
			void computeStress(ElementType el_type, GhostType ghost_type = _not_ghost);

			protected:
			/// constitutive law for a given quadrature point
			inline void computeStressOnQuad(Matrix<Real> & F,
			Matrix<Real> & sigma,
			Real & dam,
			Real & Equistrain_rate,
			Real & Equistrain,
			Real & Kapaq,
			Real dt,
			Matrix<Real> & strain_rate_vrpgls,
			Real & FullDam_ValStrain,
			Real & FullDam_ValStrain_rate,
			Real & Nb_damage);

			inline void computeDamageAndStressOnQuad(Matrix<Real> & sigma,
			Real & dam,
			Real & Equistrain_rate,
			Real & Equistrain,
			Real & Kapaq,
			Real dt,
			Real & FullDam_Valstrain,
			Real & FullDam_Valstrain_rate,
			Real & Nb_damage);

			/* ------------------------------------------------------------------------ */
			/* Accessors */
			/* ------------------------------------------------------------------------ */
			public:

			/* ------------------------------------------------------------------------ */
			/* Class Members */
			/* ------------------------------------------------------------------------ */
			protected:
			/// Initial threshold (of the equivalent strain) (used in the initial step)
			Real Kapaoi;

			/// Final threshold (of the equivalent strain) (used in the initial step)
			Real Kapac;

			/// This parameter determines the rate at which the damage grows
			Real Arate;

			/// This parameter determines the rate at which the damage grows
			Real Brate;

			/// This parameter determines the rate at which the damage grows
			Real Crate;

			/// Ratio between compressive and tensile strength
			Real Kct;

			/// Randomness on Kapaoi
			Real Kapao_randomness;

			/// Kapa vector which contains the initial damage threshold
			RandomInternalField<Real> Kapa;

			/// Strain rate tensor to compute the rate dependent damage law
			InternalField<Real> strain_rate_vreepeerlings;

			/// Value of the equivalent strain when damage = 1
			InternalField<Real> Full_dam_value_strain;

			/// Value of the equivalent strain rate when damage = 1
			InternalField<Real> Full_dam_value_strain_rate;

			/// Count the number of times that the material is damaged to damage = 0 until damage = 1
			InternalField<Real> Number_damage;

			/// Equivalent strain used to compute the damage evolution
			InternalField<Real> equi_strain;

			/// Equivalent strain rate used to compute the damage evolution
			InternalField<Real> equi_strain_rate;
			};

			/* -------------------------------------------------------------------------- */
			/* inline functions */
			/* -------------------------------------------------------------------------- */

			#include "material_vreepeerlings_inline_impl.cc"
			#include "material_vreepeerlings_tmpl.hh"

			__END_AKANTU__

			#endif /* __AKANTU_MATERIAL_VREEPEERLINGS_HH__ */

rAKA/src/material_vreepeerlings.hh7cb6928a0d48features/make_multiple_…

material_vreepeerlings.hhView Options

rAKA/src/material_vreepeerlings.hh
7cb6928a0d48features/make_multiple_…

material_vreepeerlings.hh
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