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velocity_dependent_fric_coef.hh
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Mon, May 20, 06:08

velocity_dependent_fric_coef.hh
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/**
* @file velocity_dependent_fric_coef.hh
*
* @author David Simon Kammer <david.kammer@epfl.ch>
*
* @date Tue Jun 21 15:14:39 2011
*
* @brief implementation of velocity dependence for friction coefficient
*
* @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_VELOCITY_DEPENDENT_FRIC_COEF_HH__
#define __AKANTU_VELOCITY_DEPENDENT_FRIC_COEF_HH__
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "contact_rigid.hh"
#include "friction_coefficient.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
class VelocityDependentFricCoef : public virtual FrictionCoefficient {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
VelocityDependentFricCoef(ContactRigid & contact,
const Surface & master_surface);
virtual ~VelocityDependentFricCoef();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// compute the relative sliding velocity
virtual void initializeComputeFricCoef();
/// implementation of the friction coefficient formula
virtual Real computeFricCoef(UInt impactor_node_index) = 0;
/// function to print the contain of the class
//virtual void printself(std::ostream & stream, int indent = 0) const;
private:
// computes the tangential velocity of the master element
void computeTangentialMasterVelocity(UInt impactor_index,
ContactRigid::ImpactorInformationPerMaster * impactor_info,
Real * tangential_master_velocity);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// spatial dimension of contact
UInt spatial_dimension;
/// relative sliding velocities for each active impactor node
Vector<Real> * relative_sliding_velocities;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
//#include "velocity_dependent_fric_coef_inline_impl.cc"
/*
/// standard output stream operator
inline std::ostream & operator <<(std::ostream & stream, const VelocityDependentFricCoef & _this)
{
_this.printself(stream);
return stream;
}
*/
__END_AKANTU__
#endif /* __AKANTU_VELOCITY_DEPENDENT_FRIC_COEF_HH__ */

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