void QVX_TensileTest::RunTensileTest(QString* pDispMessage)
{
QFile File(OutFilePath);
if (!File.open(QIODevice::WriteOnly | QIODevice::Text)) {
ProgressMessage = "Could not open file. Aborting.";
return;
}
QTextStream out(&File);
// double CurMaxDisp = 9e9;
std::string IntMsg;
vfloat StepPercAmt = 1.0/NumStep;
int VoxCount = NumVox();
int count = 0;
int MinimumPerStep = 5;
int NumBCs = pEnv->GetNumBCs();
for (int j=0; j<NumBCs; j++){
if (pEnv->GetBC(j)->Displace.Length2() == 0 ) continue; //if zero displacement, continue
out << "Disp (m)" << "\t" << "Force (N)" << "\t";
if (IsBasicTensile){out << "Strain (%)" << "\t" << "Stress (MPa)" << "\t" << "Modulus (MPa)" << "\t";}
}
out << "\n";
double LastStress; //so we can calculate modulus at each point...
double LastStrain;
for (int i=0; i<NumStep; i++){
ProgressMessage = "Performing tensile test...";
for (int j=0; j<VoxCount; j++) VoxArray[j].ScaleExternalInputs((i+1)*StepPercAmt);
//wiat to settle between timesteps...
int LastBroken = -1;
ClearHistories(); //needed so it doesn't immediately "converge" on the next time step
while (NumBroken() != LastBroken){ //if one breaks, repeat the settling undtil we're done breaking...
LastBroken = NumBroken();
EnableFailure(false);
// SetSlowDampZ(CurDamp);
count = 0;
// bool LastUnder = false; //were we under the threshhold last time?
// while (!LastUnder || CurMaxDisp > ConvThresh){
while (!StopConditionMet()){
// if (CurMaxDisp < ConvThresh) LastUnder = true;
for (int i=0; i<MinimumPerStep; i++){
if (CancelFlag) break;
if (!TimeStep(&IntMsg)){ //always do at least 5 steps...
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
// CurMaxDisp = SS.NormObjDisp;
}
if (CancelFlag) break;
count+=MinimumPerStep;
if (count > 20000){
QString Num = QString::number(MaxMoveHistory[0]*1000);
ProgressMessage = "Simulation not converging at " + Num.toStdString() + ". \n Retry with larger threshold.";
}
}
if (CancelFlag) break;
EnableFailure(true); //do one step to apply breaking and re-settle as needed...
if (!TimeStep(&IntMsg)){
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
}
for (int j=0; j<NumBCs; j++){
CVX_FRegion* pThisBC = pEnv->GetBC(j);
if (pThisBC->Displace.Length2() != 0 ){ //if non-zero displacement
double CurDisp = pThisBC->Displace.Length()*(i+1.0)/((double)NumStep);
double tmp2 = -GetSumForceDir(pThisBC);
out << CurDisp << "\t" << tmp2 << "\t";
if (IsBasicTensile){ //only two materials, only one with displacement, so we should only ever enter here once!!
double ThisStress = tmp2/CSArea;
double ThisStrain = CurDisp/IniLength;
out << ThisStrain*100 << "\t" << ThisStress/1e6 << "\t";
if (i!=0) out << (ThisStress-LastStress)/(ThisStrain-LastStrain)/1e6 << "\t";
else out << "" << "\t";
LastStress = ThisStress;
LastStrain = ThisStrain;
}
}
}
out << "\n";
// for (int k=0; k<VoxArray.size(); k++){
// VoxArray[k].ExternalDisp *= (i+2.0)/(i+1.0);
// }
CurTick = i+1;
}
int stop = 1;
File.close();
ProgressMessage = ""; //flag to not display message boc on return...
TestRunning = false;
emit StopExternalGLUpdate();
}
void QVX_TensileTest::RunTensileTest(QString* pDispMessage)
{
QFile File(OutFilePath);
if (!File.open(QIODevice::WriteOnly | QIODevice::Text)) {
ProgressMessage = "Could not open file. Aborting.";
return;
}
QTextStream out(&File);
// double CurMaxDisp = 9e9;
std::string IntMsg;
vfloat StepPercAmt = 1.0/NumStep;
int VoxCount = NumVox();
int count = 0;
int MinimumPerStep = 5;
int NumBCs = pEnv->GetNumBCs();
for (int j=0; j<NumBCs; j++){
if (pEnv->GetBC(j)->Displace.Length2() == 0 ) continue; //if zero displacement, continue
out << "Disp (m)" << "\t" << "Force (N)" << "\t";
if (IsBasicTensile){out << "Strain (%)" << "\t" << "Stress (MPa)" << "\t" << "Modulus (MPa)" << "\t";}
}
out << "\n";
double LastStress; //so we can calculate modulus at each point for simple tensile...
double LastStrain;
double MaxMotion = -FLT_MAX; //the stop condition will be a threshold of this in auto mode
double LastMotion = 0;
bool FoundMaxMotion = false;
if (AutoConverge){ ConvThresh = 0; SetStopConditionValue(ConvThresh);}//don't stop until we get a max
for (int i=0; i<NumStep; i++){
ProgressMessage = "Performing tensile test...";
for (int j=0; j<VoxCount; j++) VoxArray[j].ScaleExternalInputs((i+1)*StepPercAmt);
//wiat to settle between timesteps...
int LastBroken = -1;
ClearHistories(); //needed so it doesn't immediately "converge" on the next time step
while (NumBroken() != LastBroken){ //if one breaks, repeat the settling until we're done breaking...
LastBroken = NumBroken();
EnableFeature(VXSFEAT_FAILURE, false);
// EnableFailure(false);
// SetSlowDampZ(CurDamp);
count = 0;
// bool LastUnder = false; //were we under the threshhold last time?
// while (!LastUnder || CurMaxDisp > ConvThresh){
while (!StopConditionMet()){
// if (CurMaxDisp < ConvThresh) LastUnder = true;
for (int i=0; i<MinimumPerStep; i++){
if (CancelFlag) break;
if (!TimeStep(&IntMsg)){ //always do at least 5 steps...
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
// CurMaxDisp = SS.NormObjDisp;
}
if (CancelFlag) break;
if (!FoundMaxMotion && AutoConverge){
if (MotionZeroed){ //find first max motion (actually max KE, but close enough)
FoundMaxMotion = true;
ConvThresh = LastMotion / AutoConvergeExp;
SetStopConditionValue(ConvThresh);
//ProgressMessage = "Auto convergence threshhold calculated: " + QString::number(ConvThresh).toStdString();
}
else LastMotion = SS.MaxVoxVel*dt;
}
if (count%100==0){
ProgressMessage = "Performing tensile test...";
if (AutoConverge && !FoundMaxMotion) ProgressMessage += "\nDetermining convergence threshhold.";
//else ProgressMessage += "\nMotion at " + QString::number(MaxMoveHistory[0]*1000000, 'g', 3).toStdString() + "/" + QString::number(ConvThresh, 'g', 3).toStdString();
else ProgressMessage += "\nStep " + QString::number(count, 'g', 3).toStdString() +/*", Max Displacement " + QString::number(SS.MaxVoxDisp, 'g', 3).toStdString() + */", Convergence threshhold " + QString::number(ConvThresh, 'g', 3).toStdString();
if (count > 20000){
ProgressMessage += "\nSimulation not converging.\nConsider retrying with a larger threshold. (Currently " + QString::number(MaxMoveHistory[0]*1000, 'g', 3).toStdString() +")";
}
}
count+=MinimumPerStep;
}
if (CancelFlag) break;
EnableFeature(VXSFEAT_FAILURE, true);
// EnableFailure(true); //do one step to apply breaking and re-settle as needed...
if (!TimeStep(&IntMsg)){
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
}
for (int j=0; j<NumBCs; j++){
CVX_FRegion* pThisBC = pEnv->GetBC(j);
if (pThisBC->Displace.Length2() != 0 ){ //if non-zero displacement
double CurDisp = pThisBC->Displace.Length()*(i+1.0)/((double)NumStep);
double tmp2 = -GetSumForceDir(pThisBC);
out << CurDisp << "\t" << tmp2 << "\t";
if (IsBasicTensile){ //only two materials, only one with displacement, so we should only ever enter here once!!
double ThisStress = tmp2/CSArea;
double ThisStrain = CurDisp/IniLength;
out << ThisStrain*100 << "\t" << ThisStress/1e6 << "\t";
if (i!=0) out << (ThisStress-LastStress)/(ThisStrain-LastStrain)/1e6 << "\t";
else out << "" << "\t";
LastStress = ThisStress;
LastStrain = ThisStrain;
}
}
}
out << "\n";
// for (int k=0; k<VoxArray.size(); k++){
// VoxArray[k].ExternalDisp *= (i+2.0)/(i+1.0);
// }
CurTick = i+1;
}
int stop = 1;
File.close();
ProgressMessage = ""; //flag to not display message boc on return...
TestRunning = false;
emit StopExternalGLUpdate();
}
