SinterForceUnitTest.cpp File Reference

#include "DPMBase.h"
#include <iostream>
#include <vector>
#include <Species/SinterSpecies.h>
#include <Logger.h>

Classes
class	SinterForceUnitTest
	[T11:contactModel] More...

Functions
int	main (int argc UNUSED, char *argv[] UNUSED)

Function Documentation

main()

int main	(	int argc	UNUSED,
		char *argv[]	UNUSED
	)

{   
    SinterForceUnitTest sf;
    double k1=5.0;
    sf.radius = 2e-6;
    sf.species->setDensity(6.0/constants::pi);
    sf.species->setPlasticParameters(k1, 5.0*k1, k1, 0.5);
    sf.setParticleDimensions(3);
    sf.setSystemDimensions(3);
    sf.species->setSinterRate(1000);
 
    Mdouble mass=sf.species->getDensity()*constants::pi/6.0*mathsFunc::cubic(2.0*sf.radius);
    sf.species->setDissipation(5e5*mass);
    sf.setTimeStep(sf.species->computeTimeStep(mass)*2.0);
    sf.setTimeMax(sf.getTimeStep()*400.0);
    sf.setFileType(FileType::ONE_FILE);
    sf.setSaveCount(1);
 
    logger(INFO,"Testing particle particles collision for elastic plastic forces. \n"
        "This will be done for several values of scaled relative velocity chi");
    
    //Set up constant data that will be used
    const std::vector<double> chi = {0.34, 0.69, 1.05, 1.25};
 
    //Loop over all test cases
    for (int i=0; i<4; i++)
    {
        logger(INFO, "Running for chi=%",chi[i]);
        sf.set_chi(chi[i]);
        std::stringstream ss("");
        ss << "SinterForceUnitTest" << sf.get_chi();
        sf.setName(ss.str().c_str());
        sf.solve();
        sf.writeRestartFile();
    }
 
    //A longer simulation, with sintering activated
    sf.set_chi(1.15);
    sf.setName("LongSinterForceUnitTest");
    sf.setSaveCount(2500);
    sf.setTimeMax(5e-4);
    sf.solve();
    sf.writeRestartFile();
    
    logger(INFO, "Execute 'gnuplot SinterForceUnitTest.gnu' to view output");
    helpers::writeToFile("SinterForceUnitTest.gnu",
                         "set xlabel 'displacement'\n"
                         "set ylabel 'force'\n"
                         "plot 'SinterForceUnitTest1.05.fstat' u 7:9 w lp\n"
    );
    
    logger(INFO, "Execute 'gnuplot LongSinterForceUnitTest.gnu' to view output");
    helpers::writeToFile("LongSinterForceUnitTest.gnu",
                         "sinterRate = 1000\n"
                         "radius = 2e-6\n"
                         "set xlabel 'time'\n"
                         "set ylabel 'displacement'\n"
                         "plot 'LongSinterForceUnitTest.fstat' u 1:(sqrt(2.0*$7/radius)), sqrt((sinterRate*x)+0.5**2)\n"
            //"plot 'LongSinterForceUnitTest.fstat' u 1:(sqrt(2.0*$7/radius)), sqrt((2.0/radius*sinterRate*x)+0.77**2)\n"
            //"plot 'LongSinterForceUnitTest.fstat' u 1:(sqrt(2.0*$7/radius)), sqrt(sinterRate*x)\n"
    );
}

References mathsFunc::cubic(), e(), SinterForceUnitTest::get_chi(), ParticleSpecies::getDensity(), DPMBase::getTimeStep(), i, INFO, logger, ONE_FILE, constants::pi, SinterForceUnitTest::radius, SinterForceUnitTest::set_chi(), ParticleSpecies::setDensity(), DPMBase::setFileType(), DPMBase::setName(), DPMBase::setParticleDimensions(), DPMBase::setSaveCount(), DPMBase::setSystemDimensions(), DPMBase::setTimeMax(), DPMBase::setTimeStep(), DPMBase::solve(), SinterForceUnitTest::species, DPMBase::writeRestartFile(), and helpers::writeToFile().