inclined_plane.cpp

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//Copyright (c) 2013-2014, The MercuryDPM Developers Team. All rights reserved.
//For the list of developers, see <http://www.MercuryDPM.org/Team>.
//
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#include "DPMBase.h"
#include "Particles/BaseParticle.h"
#include "Walls/InfiniteWall.h"
#include <iostream>
#include <Species/LinearViscoelasticSlidingFrictionSpecies.h>

class incl_plane : public DPMBase {
public:
    
    void setupInitialConditions()
    {
        InfiniteWall w0;
        w0.set(Vec3D(0,-1,0),Vec3D(0, getYMin(), 0));
        wallHandler.copyAndAddObject(w0);
        
        BaseParticle p0; //important
        p0.setRadius(0.005);
        p0.setPosition(Vec3D((getXMin()+getXMax())/2.0,getYMin()+p0.getRadius(),0));
        p0.setVelocity(Vec3D(0.0,0.0,0.0));
        particleHandler.copyAndAddObject(p0);
    }

};

int main(int argc, char *argv[])
{
    std::cout<<"Single particle rolling on a bottom plate"<<std::endl;
    incl_plane problem;
    
    auto species = problem.speciesHandler.copyAndAddObject(LinearViscoelasticSlidingFrictionSpecies());
    problem.setName("inclined_plane");
    problem.setSaveCount(5000);
    problem.setSystemDimensions(2);
    problem.setParticleDimensions(3);
    Mdouble theta = 15.0*constants::pi/180.0;
    problem.setGravity(9.8*Vec3D(std::sin(theta),-std::cos(theta),0.0));
    species->setDensity(2000);
    species->setStiffness(10000);
    species->setDissipation(0);
    species->setSlidingStiffness(10000);
    species->setSlidingDissipation(0);
    species->setSlidingFrictionCoefficient(0.5);
    //species->setRollingStiffness(10000);
    //species->setRollingDissipation(0);
    //species->setRollingFrictionCoefficient(0.5);
    //tc=7e-5
    problem.setTimeStep(2e-6);
    problem.setTimeMax(1.0);
    problem.setXMax(0.1);
    problem.setYMax(0.1);
    problem.setZMax(0.1);
    problem.solve(argc, argv);
    problem.write(std::cout, true);
    std::cout << problem.particleHandler.getObject(0)->getVelocity() << std::endl;

}