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contact_2d_explicit.hh
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/**
* @file contact_2d_explicit.hh
*
* @author Leonardo Snozzi <leonardo.snozzi@epfl.ch>
*
* @date Fri Nov 19 14:23:18 2010
*
* @brief Interface for 2d explicit contact class
*
* @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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_CONTACT_2D_EXPLICIT_HH__
#define __AKANTU_CONTACT_2D_EXPLICIT_HH__
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "contact.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
class Contact2dExplicit : public Contact{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
Contact2dExplicit(const SolidMechanicsModel & model,
const ContactType & type,
const ContactID & id = "contact",
const MemoryID & memory_id = 0);
virtual ~Contact2dExplicit();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
void solveContact();
private:
/// Project back nodes on penetrated segments
void projectNodesOnSegments(PenetrationList & pen_list, Vector<UInt> & nodes_index);
/// Decompose velocities prior impact to compute normal velocities
void computeNormalVelocities(PenetrationList & pen_list, Vector<UInt> & nodes_index, Vector<Real> & vel_norm);
/// Decompose velocities prior impact to compute friction velocities
void computeFrictionVelocities(PenetrationList & pen_list, Vector<UInt> & nodes_index, Vector<Real> & vel_norm, Vector<Real> & vel_fric);
/// Update velocities adding normal and friction components
void updatePostImpactVelocities(PenetrationList & pen_list,Vector<UInt> & nodes_index, Vector<Real> & vel_norm, Vector<Real> & vel_fric);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
AKANTU_GET_MACRO(FrictionCoefficient, friction_coefficient, const Real &);
/// Set friction coefficient (default value = 0)
AKANTU_SET_MACRO(FrictionCoefficient, friction_coefficient, Real);
/// Set coefficient of restitution (default value = 0)
AKANTU_SET_MACRO(CoefficientOfRestitution, coefficient_of_restitution, Real);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// friction coefficient
Real friction_coefficient;
private:
/// Coefficient of restitution used to compute post impact velocities
Real coefficient_of_restitution;
};
__END_AKANTU__
#endif /* __AKANTU_CONTACT_2D_EXPLICIT_HH__ */

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