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/////////////////////////////////////////////////////////////
// //
// Copyright (c) 2003-2014 by The University of Queensland //
// Centre for Geoscience Computing //
// http://earth.uq.edu.au/centre-geoscience-computing //
// //
// Primary Business: Brisbane, Queensland, Australia //
// Licensed under the Open Software License version 3.0 //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
/////////////////////////////////////////////////////////////
#include "Model/CappedBondedInteraction.h"
#include "Foundation/console.h"
#include "tml/message/packed_message_interface.h"
#include <stdexcept>
CCappedBondedIGP::CCappedBondedIGP() : CBondedIGP(),m_force_limit(0.0)
{
}
CCappedBondedIGP::CCappedBondedIGP(const std::string &name, int tag, double normalK, double breakDistance,double maxforce)
: CBondedIGP(name,tag,normalK,breakDistance),
m_force_limit(maxforce)
{
}
CCappedBondedInteraction::CCappedBondedInteraction() : CBondedInteraction()
{
m_force_limit=0.0;
}
/*!
just do the APairInteraction part of the constructor - not to be used directly,
only by derived class -> therefore protected
*/
CCappedBondedInteraction::CCappedBondedInteraction(CParticle* p1,CParticle* p2)
: CBondedInteraction(p1, p2)
{}
CCappedBondedInteraction::CCappedBondedInteraction(
CParticle* p1,
CParticle* p2,
const CCappedBondedIGP& param
)
: CBondedInteraction(p1, p2)
{
m_k=param.k;
m_break=(m_p1->getRad()+m_p2->getRad())*param.rbreak;
m_r0=p1->getRad()+p2->getRad();
// setup initial distance in case we want to break before first calcForces()
Vec3 D=p1->getPos()-p2->getPos();
m_dist=sqrt(D*D);
m_force=Vec3(0.0,0.0,0.0);
m_tag = param.tag;
m_force_limit=param.m_force_limit;
}
CCappedBondedInteraction::~CCappedBondedInteraction()
{
//
// if (m_p1!=NULL) m_p1->setFlag();
// if (m_p2!=NULL) m_p2->setFlag();
}
/*!
Calculate bonded elastic forces. 21 Flops
*/
void CCappedBondedInteraction::calcForces()
{
// console.XDebug()
// << "bonded interaction: [" << m_p1->getID() << " - "
// << m_p2->getID() << "]" << m_p1->getPos()
// << m_p2->getPos() << "\n";
const Vec3 D=m_p1->getPos()-m_p2->getPos();
// get distance
m_dist=sqrt(D*D);
// calc relative deformation
double rdef=(m_dist-m_r0)/m_dist;
if(fabs(rdef)>m_force_limit){
rdef=(rdef/fabs(rdef))*m_force_limit;
}
m_force = D*(m_k*rdef);
const Vec3 pos=m_p2->getPos()+(m_p2->getRad()/m_r0)*D;
m_p2->applyForce(m_force,pos);
m_p1->applyForce(-1.0*m_force,pos);
m_cpos=pos;
}
/*!
Get the particle member function which returns a scalar field of a given name.
\param name the name of the field
*/
CCappedBondedInteraction::ScalarFieldFunction CCappedBondedInteraction::getScalarFieldFunction(const string& name)
{
CCappedBondedInteraction::ScalarFieldFunction sf;
if (name=="potential_energy"){
sf=&CBondedInteraction::getPotentialEnergy;
} else if (name=="count"){
sf=&CBondedInteraction::Count;
} else if (name=="strain"){
sf=&CBondedInteraction::getStrain;;
} else {
sf=NULL;
cerr << "ERROR - invalid name for interaction scalar access function" << endl;
}
return sf;
}
/*!
Get the particle member function which returns a vector field of a given name.
\param name the name of the field
*/
CCappedBondedInteraction::VectorFieldFunction CCappedBondedInteraction::getVectorFieldFunction(const string& name)
{
CCappedBondedInteraction::VectorFieldFunction sf;
if (name=="force"){
sf=&CBondedInteraction::getForce;
} else {
sf=NULL;
cerr << "ERROR - invalid name for interaction vector access function" << endl;
}
return sf;
}
/*!
Get the particle member function which returns a checked scalar field of a given name.
\param name the name of the field
*/
CCappedBondedInteraction::CheckedScalarFieldFunction CCappedBondedInteraction::getCheckedScalarFieldFunction(const string& name)
{
CCappedBondedInteraction::CheckedScalarFieldFunction sf;
sf=NULL;
cerr << "ERROR - invalid name for interaction scalar access function" << endl;
return sf;
}
/*!
Pack a CBondedInteraction into a TML packed message
\param I the interaction
*/
template<>
void TML_PackedMessageInterface::pack<CCappedBondedInteraction>(const CCappedBondedInteraction& I)
{
append(I.m_k);
append(I.m_r0);
append(I.m_dist);
append(I.m_break);
append(I.m_id[0]);
append(I.m_id[1]);
append(I.getTag());
append(I.m_force_limit);
}
/*!
Unpack a CBondedInteraction from a TML packed message
\param I the interaction
*/
template<>
void TML_PackedMessageInterface::unpack<CCappedBondedInteraction>(CCappedBondedInteraction& I)
{
I.m_k=pop_double();
I.m_r0=pop_double();
I.m_dist=pop_double();
I.m_break=pop_double();
I.m_id.erase(I.m_id.begin(),I.m_id.end());
I.m_id.push_back(pop_int());
I.m_id.push_back(pop_int());
I.setTag(pop_int());
I.m_force_limit=pop_double();
}
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