int
InitialInterpolatedLineSearch::search(double s0,
double s1,
LinearSOE &theSOE,
IncrementalIntegrator &theIntegrator)
{
double s = s1;
//intialize r = ratio of residuals
double r0 = 0.0;
if ( s0 != 0.0 )
r0 = fabs( s / s0 );
if (r0 <= tolerance )
return 0; // Line Search Not Required Residual Decrease Less Than Tolerance
double eta = 1.0; //initial value of line search parameter
double etaPrev = 1.0;
double r = r0;
const Vector &dU = theSOE.getX();
int count = 0; //intial value of iteration counter
if (printFlag == 0) {
opserr << "InitialInterpolated Line Search - initial "
<< " eta : " << eta
<< " , Ratio |s/s0| = " << r0 << endln;
}
// Solution procedure follows the one in Crissfields book.
// (M.A. Crissfield, Nonlinear Finite Element Analysis of Solid and Structures, Wiley. 97).
// NOTE: it is not quite linear interpolation/false-position/regula-falsi as eta(0) = 0.0
// does not change. uses eta(i) = eta(i-1)*s0
// -----------
// s0 - s(i-1) to compute eta(i)
// opserr << "dU: " << dU;
while ( r > tolerance && count < maxIter ) {
count++;
eta *= s0 / (s0 - s);
//-- want to put limits on eta(i)
if (eta > maxEta) eta = maxEta;
if (r > r0 ) eta = 1.0;
if (eta < minEta) eta = minEta;
if (eta == etaPrev)
break; // no change in response break
//dx = ( eta * dx0 );
*x = dU;
*x *= eta-etaPrev;
if (theIntegrator.update(*x) < 0) {
opserr << "WARNInG InitialInterpolatedLineSearch::search() -";
opserr << "the Integrator failed in update()\n";
return -1;
}
if (theIntegrator.formUnbalance() < 0) {
opserr << "WARNInG InitialInterpolatedLineSearch::search() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
//new residual
const Vector &ResidI = theSOE.getB();
//new value of s
s = dU ^ ResidI;
//new value of r
r = fabs( s / s0 );
if (printFlag == 0) {
opserr << "InitialInterpolated Line Search - iteration: " << count
<< " , eta(j) : " << eta
<< " , Ratio |sj/s0| = " << r << endln;
}
// reset the variables, also check not just hitting bounds over and over
if (eta == etaPrev)
count = maxIter;
else
etaPrev = eta;
} //end while
// set X in the SOE for the revised dU, needed for convergence tests
*x = dU;
if (eta != 0.0)
*x *= eta;
theSOE.setX(*x);
return 0;
}
int
PeriodicNewton::solveCurrentStep(void)
{
// set up some pointers and check they are valid
// NOTE this could be taken away if we set Ptrs as protecetd in superclass
AnalysisModel *theAnalysisModel = this->getAnalysisModelPtr();
IncrementalIntegrator *theIncIntegratorr = this->getIncrementalIntegratorPtr();
LinearSOE *theSOE = this->getLinearSOEptr();
if ((theAnalysisModel == 0) || (theIncIntegratorr == 0) || (theSOE == 0)
|| (theTest == 0)){
opserr << "WARNING PeriodicNewton::solveCurrentStep() - setLinks() has";
opserr << " not been called - or no ConvergenceTest has been set\n";
return -5;
}
// we form the tangent
if (theIncIntegratorr->formUnbalance() < 0) {
opserr << "WARNING PeriodicNewton::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
if (theIncIntegratorr->formTangent(tangent) < 0){
opserr << "WARNING PeriodicNewton::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
// set itself as the ConvergenceTest objects EquiSolnAlgo
theTest->setEquiSolnAlgo(*this);
if (theTest->start() < 0) {
opserr << "PeriodicNewton::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in start()\n";
return -3;
}
// repeat until convergence is obtained or reach max num iterations
int result = -1;
int count = 0;
int iter = 0;
do {
if (theSOE->solve() < 0) {
opserr << "WARNING PeriodicNewton::solveCurrentStep() -";
opserr << "the LinearSysOfEqn failed in solve()\n";
return -3;
}
if (theIncIntegratorr->update(theSOE->getX()) < 0) {
opserr << "WARNING PeriodicNewton::solveCurrentStep() -";
opserr << "the Integrator failed in update()\n";
return -4;
}
if (theIncIntegratorr->formUnbalance() < 0) {
opserr << "WARNING PeriodicNewton::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
this->record(count++);
result = theTest->test();
iter++;
if (iter > maxCount) {
if (theIncIntegratorr->formTangent(tangent) < 0){
opserr << "WARNING PeriodicNewton::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
iter = 0;
}
} while (result == -1);
if (result == -2) {
opserr << "PeriodicNewton::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in test()\n";
return -3;
}
return result;
}
int HHTGeneralized_TP::newStep(double _deltaT)
{
if (beta == 0 || gamma == 0 ) {
opserr << "HHTGeneralized_TP::newStep() - error in variable\n";
opserr << "gamma = " << gamma << " beta = " << beta << endln;
return -1;
}
deltaT = _deltaT;
if (deltaT <= 0.0) {
opserr << "HHTGeneralized_TP::newStep() - error in variable\n";
opserr << "dT = " << deltaT << endln;
return -2;
}
// get a pointer to the LinearSOE and the AnalysisModel
LinearSOE *theLinSOE = this->getLinearSOE();
AnalysisModel *theModel = this->getAnalysisModel();
if (theLinSOE == 0 || theModel == 0) {
opserr << "WARNING HHT_TP::newStep() - ";
opserr << "no LinearSOE or AnalysisModel has been set\n";
return -3;
}
// set the constants
c1 = 1.0;
c2 = gamma/(beta*deltaT);
c3 = 1.0/(beta*deltaT*deltaT);
if (U == 0) {
opserr << "HHTGeneralized_TP::newStep() - domainChange() failed or hasn't been called\n";
return -4;
}
// set response at t to be that at t+deltaT of previous step
(*Ut) = *U;
(*Utdot) = *Udot;
(*Utdotdot) = *Udotdot;
// get unbalance at t and store it
alphaM = (1.0 - alphaI);
alphaD = alphaR = alphaP = (1.0 - alphaF);
this->TransientIntegrator::formUnbalance();
(*Put) = theLinSOE->getB();
// determine new velocities and accelerations at t+deltaT
double a1 = (1.0 - gamma/beta);
double a2 = deltaT*(1.0 - 0.5*gamma/beta);
Udot->addVector(a1, *Utdotdot, a2);
double a3 = -1.0/(beta*deltaT);
double a4 = 1.0 - 0.5/beta;
Udotdot->addVector(a4, *Utdot, a3);
// set the trial response quantities
theModel->setVel(*Udot);
theModel->setAccel(*Udotdot);
// increment the time to t+deltaT and apply the load
double time = theModel->getCurrentDomainTime();
time += deltaT;
if (theModel->updateDomain(time, deltaT) < 0) {
opserr << "HHTGeneralized_TP::newStep() - failed to update the domain\n";
return -5;
}
// modify constants for subsequent iterations
alphaM = alphaI;
alphaD = alphaR = alphaP = alphaF;
return 0;
}
int HHTGeneralized_TP::domainChanged()
{
AnalysisModel *myModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
const Vector &x = theLinSOE->getX();
int size = x.Size();
// create the new Vector objects
if (Ut == 0 || Ut->Size() != size) {
// delete the old
if (Ut != 0)
delete Ut;
if (Utdot != 0)
delete Utdot;
if (Utdotdot != 0)
delete Utdotdot;
if (U != 0)
delete U;
if (Udot != 0)
delete Udot;
if (Udotdot != 0)
delete Udotdot;
if (Put != 0)
delete Put;
// create the new
Ut = new Vector(size);
Utdot = new Vector(size);
Utdotdot = new Vector(size);
U = new Vector(size);
Udot = new Vector(size);
Udotdot = new Vector(size);
Put = new Vector(size);
// check we obtained the new
if (Ut == 0 || Ut->Size() != size ||
Utdot == 0 || Utdot->Size() != size ||
Utdotdot == 0 || Utdotdot->Size() != size ||
U == 0 || U->Size() != size ||
Udot == 0 || Udot->Size() != size ||
Udotdot == 0 || Udotdot->Size() != size ||
Put == 0 || Put->Size() != size) {
opserr << "HHTGeneralized_TP::domainChanged - ran out of memory\n";
// delete the old
if (Ut != 0)
delete Ut;
if (Utdot != 0)
delete Utdot;
if (Utdotdot != 0)
delete Utdotdot;
if (U != 0)
delete U;
if (Udot != 0)
delete Udot;
if (Udotdot != 0)
delete Udotdot;
if (Put != 0)
delete Put;
Ut = 0; Utdot = 0; Utdotdot = 0;
U = 0; Udot = 0; Udotdot = 0;
Put = 0;
return -1;
}
}
// now go through and populate U, Udot and Udotdot by iterating through
// the DOF_Groups and getting the last committed velocity and accel
DOF_GrpIter &theDOFs = myModel->getDOFs();
DOF_Group *dofPtr;
while ((dofPtr = theDOFs()) != 0) {
const ID &id = dofPtr->getID();
int idSize = id.Size();
int i;
const Vector &disp = dofPtr->getCommittedDisp();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*U)(loc) = disp(i);
}
}
const Vector &vel = dofPtr->getCommittedVel();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Udot)(loc) = vel(i);
}
}
const Vector &accel = dofPtr->getCommittedAccel();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Udotdot)(loc) = accel(i);
}
}
}
return 0;
}
int
DisplacementControl::domainChanged(void)
{
// we first create the Vectors needed
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING DisplacementControl::update() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
int size = theModel->getNumEqn(); // ask model in case N+1 space
if (deltaUhat == 0 || deltaUhat->Size() != size) { // create new Vector
if (deltaUhat != 0)
delete deltaUhat; // delete the old
deltaUhat = new Vector(size);
if (deltaUhat == 0 || deltaUhat->Size() != size) { // check got it
opserr << "FATAL DisplacementControl::domainChanged() - ran out of memory for";
opserr << " deltaUhat Vector of size " << size << endln;
exit(-1);
}
}
if (deltaUbar == 0 || deltaUbar->Size() != size) { // create new Vector
if (deltaUbar != 0)
delete deltaUbar; // delete the old
deltaUbar = new Vector(size);
if (deltaUbar == 0 || deltaUbar->Size() != size) { // check got it
opserr << "FATAL DisplacementControl::domainChanged() - ran out of memory for";
opserr << " deltaUbar Vector of size " << size << endln;
exit(-1);
}
}
if (deltaU == 0 || deltaU->Size() != size) { // create new Vector
if (deltaU != 0)
delete deltaU; // delete the old
deltaU = new Vector(size);
if (deltaU == 0 || deltaU->Size() != size) { // check got it
opserr << "FATAL DisplacementControl::domainChanged() - ran out of memory for";
opserr << " deltaU Vector of size " << size << endln;
exit(-1);
}
}
if (deltaUstep == 0 || deltaUstep->Size() != size) {
if (deltaUstep != 0)
delete deltaUstep;
deltaUstep = new Vector(size);
if (deltaUstep == 0 || deltaUstep->Size() != size) {
opserr << "FATAL DisplacementControl::domainChanged() - ran out of memory for";
opserr << " deltaUstep Vector of size " << size << endln;
exit(-1);
}
}
if (phat == 0 || phat->Size() != size) {
if (phat != 0)
delete phat;
phat = new Vector(size);
if (phat == 0 || phat->Size() != size) {
opserr << "FATAL DisplacementControl::domainChanged() - ran out of memory for";
opserr << " phat Vector of size " << size << endln;
exit(-1);
}
}
// now we have to determine phat
// do this by incrementing lambda by 1, applying load
// and getting phat from unbalance.
currentLambda = theModel->getCurrentDomainTime();
currentLambda += 1.0;
theModel->applyLoadDomain(currentLambda);
this->formUnbalance(); // NOTE: this assumes unbalance at last was 0
(*phat) = theLinSOE->getB();
currentLambda -= 1.0;
theModel->setCurrentDomainTime(currentLambda);
// check there is a reference load
int haveLoad = 0;
for (int i=0; i<size; i++)
if ( (*phat)(i) != 0.0 ) {
haveLoad = 1;
i = size;
}
if (haveLoad == 0) {
opserr << "WARNING DisplacementControl::domainChanged() - zero reference load";
return -1;
}
// lastly we determine the id of the nodal dof
// EXTRA CODE TO DO SOME ERROR CHECKING REQUIRED
Node *theNodePtr = theDomain->getNode(theNode);
if (theNodePtr == 0) {
opserr << "DisplacementControl::domainChanged - no node\n";
return -1;
}
DOF_Group *theGroup = theNodePtr->getDOF_GroupPtr();
if (theGroup == 0) {
return 0;
}
const ID &theID = theGroup->getID();
theDofID = theID(theDof);
return 0;
}
int
DisplacementControl::newStep(void)
{
if (theDofID == -1) {
opserr << "DisplacementControl::newStep() - domainChanged has not been called\n";
return -1;
}
// get pointers to AnalysisModel and LinearSOE
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING DisplacementControl::newStep() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
// determine increment for this iteration
double factor = specNumIncrStep/numIncrLastStep;
theIncrement *=factor;
if (theIncrement < minIncrement)
theIncrement = minIncrement;
else if (theIncrement > maxIncrement)
theIncrement = maxIncrement;
// get the current load factor
currentLambda = theModel->getCurrentDomainTime();
// determine dUhat
this->formTangent();
theLinSOE->setB(*phat);
if (theLinSOE->solve() < 0) {
opserr << "DisplacementControl::newStep(void) - failed in solver\n";
return -1;
}
(*deltaUhat) = theLinSOE->getX();
Vector &dUhat = *deltaUhat;
double dUahat = dUhat(theDofID);
if (dUahat == 0.0) {
opserr << "WARNING DisplacementControl::newStep() ";
opserr << "dUahat is zero -- zero reference displacement at control node DOF\n";
return -1;
}
// determine delta lambda(1) == dlambda
double dLambda = theIncrement/dUahat;
deltaLambdaStep = dLambda;
currentLambda += dLambda;
// opserr << "DisplacementControl: " << dUahat << " " << theDofID << endln;
// opserr << "DisplacementControl::newStep() : " << deltaLambdaStep << endln;
// determine delta U(1) == dU
(*deltaU) = dUhat;
(*deltaU) *= dLambda;
(*deltaUstep) = (*deltaU);
// update model with delta lambda and delta U
theModel->incrDisp(*deltaU);
theModel->applyLoadDomain(currentLambda);
if (theModel->updateDomain() < 0) {
opserr << "DisplacementControl::newStep - model failed to update for new dU\n";
return -1;
}
numIncrLastStep = 0;
return 0;
}
int
SecantLineSearch::search(double s0,
double s1,
LinearSOE &theSOE,
IncrementalIntegrator &theIntegrator)
{
double r0 = 0.0;
if ( s0 != 0.0 )
r0 = fabs( s1 / s0 );
if (r0 <= tolerance )
return 0; // Line Search Not Required Residual Decrease Less Than Tolerance
if (s1 == s0)
return 0; // Secant will have a divide-by-zero if continue
// set some variables
double eta = 1.0;
double s = s1;
double etaJ = 1.0;
double etaJm1 = 0.0;
double sJ = s1;
double sJm1 = s0;
double r = r0;
const Vector &dU = theSOE.getX();
if (printFlag == 0) {
opserr << "Secant Line Search - initial: "
<< " eta(0) : " << eta << " , Ratio |s/s0| = " << r0 << endln;
}
// perform the secant iterations:
//
// eta(j+1) = eta(j) - s(j) * (eta(j-1)-eta(j))
// ------------------------
// s(j-1) - s(j)
int count = 0; //intial value of iteration counter
while ( r > tolerance && count < maxIter ) {
count++;
eta = etaJ - sJ * (etaJm1-etaJ) / (sJm1 - sJ);
//-- want to put limits on eta and stop solution blowing up
if (eta > maxEta) eta = maxEta;
if (r > r0 ) eta = 1.0;
if (eta < minEta) eta = minEta;
//update the incremental difference in response and determine new unbalance
if (eta == etaJ)
break; // no change in response
*x = dU;
*x *= eta-etaJ;
if (theIntegrator.update(*x) < 0) {
opserr << "WARNING SecantLineSearch::search() -";
opserr << "the Integrator failed in update()\n";
return -1;
}
if (theIntegrator.formUnbalance() < 0) {
opserr << "WARNING SecantLineSearch::search() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
//new residual
const Vector &ResidJ = theSOE.getB();
//new value of s
s = dU ^ ResidJ;
//new value of r
r = fabs( s / s0 );
if (printFlag == 0) {
opserr << "Secant Line Search - iteration: " << count
<< " , eta(j) : " << eta << " , Ratio |sj/s0| = " << r << endln;
}
if (etaJ == eta)
count = maxIter;
// set variables for next iteration
etaJm1 = etaJ;
etaJ = eta;
sJm1 = sJ;
sJ = s;
if (sJm1 == sJ)
count = maxIter;
} //end while
// set X in the SOE for the revised dU, needed for convergence tests
*x = dU;
*x *= eta;
theSOE.setX(*x);
return 0;
}
int CollocationHSFixedNumIter::domainChanged()
{
AnalysisModel *myModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
const Vector &x = theLinSOE->getX();
int size = x.Size();
// if damping factors exist set them in the ele & node of the domain
if (alphaM != 0.0 || betaK != 0.0 || betaKi != 0.0 || betaKc != 0.0)
myModel->setRayleighDampingFactors(alphaM, betaK, betaKi, betaKc);
// create the new Vector objects
if (Ut == 0 || Ut->Size() != size) {
// delete the old
if (Ut != 0)
delete Ut;
if (Utdot != 0)
delete Utdot;
if (Utdotdot != 0)
delete Utdotdot;
if (U != 0)
delete U;
if (Udot != 0)
delete Udot;
if (Udotdot != 0)
delete Udotdot;
if (Utm1 != 0)
delete Utm1;
if (Utm2 != 0)
delete Utm2;
if (scaledDeltaU != 0)
delete scaledDeltaU;
// create the new
Ut = new Vector(size);
Utdot = new Vector(size);
Utdotdot = new Vector(size);
U = new Vector(size);
Udot = new Vector(size);
Udotdot = new Vector(size);
Utm1 = new Vector(size);
Utm2 = new Vector(size);
scaledDeltaU = new Vector(size);
// check we obtained the new
if (Ut == 0 || Ut->Size() != size ||
Utdot == 0 || Utdot->Size() != size ||
Utdotdot == 0 || Utdotdot->Size() != size ||
U == 0 || U->Size() != size ||
Udot == 0 || Udot->Size() != size ||
Udotdot == 0 || Udotdot->Size() != size ||
Utm1 == 0 || Utm1->Size() != size ||
Utm2 == 0 || Utm2->Size() != size ||
scaledDeltaU == 0 || scaledDeltaU->Size() != size) {
opserr << "CollocationHSFixedNumIter::domainChanged - ran out of memory\n";
// delete the old
if (Ut != 0)
delete Ut;
if (Utdot != 0)
delete Utdot;
if (Utdotdot != 0)
delete Utdotdot;
if (U != 0)
delete U;
if (Udot != 0)
delete Udot;
if (Udotdot != 0)
delete Udotdot;
if (Utm1 != 0)
delete Utm1;
if (Utm2 != 0)
delete Utm2;
if (scaledDeltaU != 0)
delete scaledDeltaU;
Ut = 0; Utdot = 0; Utdotdot = 0;
U = 0; Udot = 0; Udotdot = 0;
Utm1 = 0; Utm2 = 0; scaledDeltaU = 0;
return -1;
}
}
// now go through and populate U, Udot and Udotdot by iterating through
// the DOF_Groups and getting the last committed velocity and accel
DOF_GrpIter &theDOFs = myModel->getDOFs();
DOF_Group *dofPtr;
while ((dofPtr = theDOFs()) != 0) {
const ID &id = dofPtr->getID();
int idSize = id.Size();
int i;
const Vector &disp = dofPtr->getCommittedDisp();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Utm1)(loc) = disp(i);
(*Ut)(loc) = disp(i);
(*U)(loc) = disp(i);
}
}
const Vector &vel = dofPtr->getCommittedVel();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Udot)(loc) = vel(i);
}
}
const Vector &accel = dofPtr->getCommittedAccel();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Udotdot)(loc) = accel(i);
}
}
}
if (polyOrder == 2)
opserr << "\nWARNING: CollocationHSFixedNumIter::domainChanged() - assuming Ut-1 = Ut\n";
else if (polyOrder == 3)
opserr << "\nWARNING: CollocationHSFixedNumIter::domainChanged() - assuming Ut-2 = Ut-1 = Ut\n";
return 0;
}
int
DisplacementPath::update(const Vector &dU)
{
// opserr << " update is invoked " << endln;
if (theDofID == -1) {
opserr << "DisplacementControl::newStep() - domainChanged has not been called\n";
return -1;
}
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING DisplacementPath::update() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
(*deltaUbar) = dU; // have to do this as the SOE is gonna change
double dUabar = (*deltaUbar)(theDofID);
// determine dUhat
theLinSOE->setB(*phat);
theLinSOE->solve();
(*deltaUhat) = theLinSOE->getX();
// add by zhong for check purpose
//int size = deltaUhat->Size();
//opserr << "\n size of deltaUhat = " << size << endln;
//for (int i=0; i<size; i++) {
// opserr << " dektaUhat(i) = " << (*deltaUhat)(i) << endln;
//}
// finish here
double dUahat = (*deltaUhat)(theDofID);
//opserr << " theDofID = " << theDofID << endln;
//opserr << "update( ) " << endln;
//opserr << "dUahat = " << dUahat << endln;
if (dUahat == 0.0) {
opserr << "WARNING DisplacementPath::update() ";
opserr << "dUahat is zero -- zero reference displacement at control node DOF\n";
return -1;
}
// determine delta lambda(1) == dlambda
double dLambda = -dUabar/dUahat;
// add by zhong
//opserr << "\n dUahat = " << dUahat << endln;
//opserr << " dUabar = " << dUabar << endln;
//opserr << " dLambda = " << dLambda << endln;
// finish
// determine delta U(i)
(*deltaU) = (*deltaUbar);
deltaU->addVector(1.0, *deltaUhat,dLambda);
// update dU and dlambda
(*deltaUstep) += *deltaU;
deltaLambdaStep += dLambda;
currentLambda += dLambda;
// update the model
theModel->incrDisp(*deltaU);
theModel->applyLoadDomain(currentLambda);
if (theModel->updateDomain() < 0) {
opserr << "DisplacementPath::update - model failed to update for new dU\n";
return -1;
}
// set the X soln in linearSOE to be deltaU for convergence Test
theLinSOE->setX(*deltaU);
return 0;
}
int
DisplacementPath::newStep(void)
{
if (theDofID == -1) {
opserr << "DisplacementPath::newStep() - domainChanged has not been called\n";
return -1;
}
// get pointers to AnalysisModel and LinearSOE
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING DisplacementPath::newStep() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
// check theIncrementVector Vector
if ( theIncrementVector == 0 ) {
opserr << "DisplacementPath::newStep() - no theIncrementVector associated with object\n";
return -2;
}
// determine increment for this iteration
if (currentStep < theIncrementVector->Size()) {
theCurrentIncrement = (*theIncrementVector)(currentStep);
}
else {
theCurrentIncrement = 0.0;
opserr << "DisplacementPath::newStep() - reach the end of specified load path\n";
opserr << " - setting theCurrentIncrement = 0.0\n";
}
// get the current load factor
currentLambda = theModel->getCurrentDomainTime();
// determine dUhat and dUabar
this->formTangent();
this->formUnbalance();
(*deltaUbar) = theLinSOE->getX();
double dUabar = (*deltaUbar)(theDofID);
theLinSOE->setB(*phat);
if (theLinSOE->solve() < 0) {
opserr << "DisplacementControl::newStep(void) - failed in solver\n";
return -1;
}
(*deltaUhat) = theLinSOE->getX();
Vector &dUhat = *deltaUhat;
double dUahat = dUhat(theDofID);
//opserr << " newStep( ) " << endln;
//opserr << " theDofID = " << theDofID << endln;
//opserr << "dUahat = " << dUahat << endln;
if (dUahat == 0.0) {
opserr << "WARNING DisplacementPath::newStep() ";
opserr << "dUahat is zero -- zero reference displacement at control node DOF\n";
opserr << "currentStep = " << currentStep << endln; // add by zhong
opserr << " theCurrentIncrement = " << theCurrentIncrement << endln; // zhong
return -1;
}
// determine delta lambda(1) == dlambda
double dLambda = (theCurrentIncrement-dUabar)/dUahat;
deltaLambdaStep = dLambda;
currentLambda += dLambda;
// opserr << "DisplacementPath: " << dUahat << " " << theDofID << endln;
// opserr << "DisplacementPath::newStep() : " << deltaLambdaStep << endln;
// determine delta U(1) == dU
(*deltaU) = dUhat;
(*deltaU) *= dLambda;
(*deltaUstep) = (*deltaU);
// update model with delta lambda and delta U
theModel->incrDisp(*deltaU);
theModel->applyLoadDomain(currentLambda);
if (theModel->updateDomain() < 0) {
opserr << "DisplacementPath::newStep - model failed to update for new dU\n";
return -1;
}
currentStep++;
return 0;
}
int
ArcLengthw::newStep(void)
{
ofstream factor;
factor.open("factor.dat",ios::app);
// get pointers to AnalysisModel and LinearSOE
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING ArcLengthw::newStep() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
// get the current load factor
currentLambda = theModel->getCurrentDomainTime();
factor<<"currentLambda"<<endln;
factor<<currentLambda<<endln;
// determine dUhat
this->formTangent();
theLinSOE->setB(*phat);
theLinSOE->solve();
(*deltaUhat) = theLinSOE->getX();
Vector &dUhat = *deltaUhat;
factor<<"dUhat"<<endln;
//factor>>dUhat;
int size = dUhat.Size();
int i = 0;
double sum = 0.0;
int Ji_1 = 0;
double dLambda = 0.0;
factor<<"dWibefore"<<endln;
factor<<dWi<<endln;
factor<<"*phat"<<endln;
//factor>>*phat;
factor<<"dUhat"<<endln;
//factor>>dUhat;
factor<<"iFactor"<<endln;
factor<<iFactor<<endln;
factor<<"Jd"<<endln;
factor<<Jd<<endln;
factor<<"iflag"<<endln;
factor<<iflag<<endln;
double dJd = Jd;
double dJi_1 = 1.0;
if( iflag == 0 ){
dWi = ( (*phat) ^ dUhat ) * iFactor * iFactor;
dLambda = iFactor;
iflag = 1;
}
else if( iflag == 1 ){
Ji_1 = 10; //theAlgo->getNumIteration();
dJi_1 = Ji_1;
dWi = dWi * pow(( dJd / dJi_1 ),0.01);
dLambda = dWi / ( (*phat)^(dUhat) );
}
if( Ji_1 >0){
factor<<"Jd/Ji-1"<<endln;
factor<<dJd/dJi_1<<endln;
}
factor<<"iflag"<<endln;
factor<<iflag<<endln;
factor<<"Ji_1"<<endln;
factor<<Ji_1<<endln;
factor<<"dWi"<<endln;
factor<<dWi<<endln;
deltaLambdaStep = dLambda;
currentLambda += dLambda;
(*deltaU) = dUhat;
(*deltaU) *= dLambda;
(*deltaUstep) = (*deltaU);
// update model with delta lambda and delta U
theModel->incrDisp(*deltaU);
theModel->applyLoadDomain(currentLambda);
theModel->updateDomain();
return 0;
}
int
ArcLengthw::domainChanged(void)
{
// we first create the Vectors needed
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING ArcLengthw::update() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
int size = theModel->getNumEqn(); // ask model in case N+1 space
if (deltaUhat == 0 || deltaUhat->Size() != size) { // create new Vector
if (deltaUhat != 0)
delete deltaUhat; // delete the old
deltaUhat = new Vector(size);
if (deltaUhat == 0 || deltaUhat->Size() != size) { // check got it
opserr << "FATAL ArcLengthw::domainChanged() - ran out of memory for";
opserr << " deltaUhat Vector of size " << size << endln;
exit(-1);
}
}
if (deltaUbar == 0 || deltaUbar->Size() != size) { // create new Vector
if (deltaUbar != 0)
delete deltaUbar; // delete the old
deltaUbar = new Vector(size);
if (deltaUbar == 0 || deltaUbar->Size() != size) { // check got it
opserr << "FATAL ArcLengthw::domainChanged() - ran out of memory for";
opserr << " deltaUbar Vector of size " << size << endln;
exit(-1);
}
}
if (deltaU == 0 || deltaU->Size() != size) { // create new Vector
if (deltaU != 0)
delete deltaU; // delete the old
deltaU = new Vector(size);
if (deltaU == 0 || deltaU->Size() != size) { // check got it
opserr << "FATAL ArcLengthw::domainChanged() - ran out of memory for";
opserr << " deltaU Vector of size " << size << endln;
exit(-1);
}
}
if (deltaUstep == 0 || deltaUstep->Size() != size) {
if (deltaUstep != 0)
delete deltaUstep;
deltaUstep = new Vector(size);
if (deltaUstep == 0 || deltaUstep->Size() != size) {
opserr << "FATAL ArcLengthw::domainChanged() - ran out of memory for";
opserr << " deltaUstep Vector of size " << size << endln;
exit(-1);
}
}
if (phat == 0 || phat->Size() != size) {
if (phat != 0)
delete phat;
phat = new Vector(size);
if (phat == 0 || phat->Size() != size) {
opserr << "FATAL ArcLengthw::domainChanged() - ran out of memory for";
opserr << " phat Vector of size " << size << endln;
exit(-1);
}
}
// now we have to determine phat
// do this by incrementing lambda by 1, applying load
// and getting phat from unbalance.
currentLambda = theModel->getCurrentDomainTime();
currentLambda += 1.0;
theModel->applyLoadDomain(currentLambda);
this->formUnbalance(); // NOTE: this assumes unbalance at last was 0
(*phat) = theLinSOE->getB();
currentLambda -= 1.0;
theModel->setCurrentDomainTime(currentLambda);
return 0;
}
int
PFEMIntegrator::formSensitivityRHS(int passedGradNumber)
{
sensitivityFlag = 1;
// Set a couple of data members
gradNumber = passedGradNumber;
// Get pointer to the SOE
LinearSOE *theSOE = this->getLinearSOE();
// Get the analysis model
AnalysisModel *theModel = this->getAnalysisModel();
// Randomness in external load (including randomness in time series)
// Get domain
Domain *theDomain = theModel->getDomainPtr();
// Loop through nodes to zero the unbalaced load
Node *nodePtr;
NodeIter &theNodeIter = theDomain->getNodes();
while ((nodePtr = theNodeIter()) != 0)
nodePtr->zeroUnbalancedLoad();
// Loop through load patterns to add external load sensitivity
LoadPattern *loadPatternPtr;
LoadPatternIter &thePatterns = theDomain->getLoadPatterns();
double time;
while((loadPatternPtr = thePatterns()) != 0) {
time = theDomain->getCurrentTime();
loadPatternPtr->applyLoadSensitivity(time);
}
// Randomness in element/material contributions
// Loop through FE elements
FE_Element *elePtr;
FE_EleIter &theEles = theModel->getFEs();
while((elePtr = theEles()) != 0) {
theSOE->addB( elePtr->getResidual(this), elePtr->getID() );
}
// Loop through DOF groups (IT IS IMPORTANT THAT THIS IS DONE LAST!)
DOF_Group *dofPtr;
DOF_GrpIter &theDOFs = theModel->getDOFs();
while((dofPtr = theDOFs()) != 0) {
theSOE->addB( dofPtr->getUnbalance(this), dofPtr->getID() );
}
// Reset the sensitivity flag
sensitivityFlag = 0;
return 0;
}
int KRAlphaExplicit::newStep(double _deltaT)
{
updateCount = 0;
if (beta == 0 || gamma == 0 ) {
opserr << "WARNING KRAlphaExplicit::newStep() - error in variable\n";
opserr << "gamma = " << gamma << " beta = " << beta << endln;
return -1;
}
// get a pointer to the AnalysisModel
AnalysisModel *theModel = this->getAnalysisModel();
if (theModel == 0) {
opserr << "WARNING KRAlphaExplicit::newStep() - no AnalysisModel set\n";
return -2;
}
if (initAlphaMatrices || _deltaT != deltaT) {
// update time step increment
deltaT = _deltaT;
if (deltaT <= 0.0) {
opserr << "WARNING KRAlphaExplicit::newStep() - error in variable\n";
opserr << "dT = " << deltaT << endln;
return -3;
}
// get the LinearSOE and the ConvergenceTest so we can switch back later
LinearSOE *theLinSOE = this->getLinearSOE();
ConvergenceTest *theTest = this->getConvergenceTest();
// set up the FullLinearSOE (needed to compute the alpha matrices)
int size = theLinSOE->getNumEqn();
FullGenLinSolver *theFullLinSolver = new FullGenLinLapackSolver();
LinearSOE *theFullLinSOE = new FullGenLinSOE(size, *theFullLinSolver);
if (theFullLinSOE == 0) {
opserr << "WARNING KRAlphaExplicit::newStep() - failed to create FullLinearSOE\n";
return -4;
}
theFullLinSOE->setLinks(*theModel);
// now switch the SOE to the FullLinearSOE
this->IncrementalIntegrator::setLinks(*theModel, *theFullLinSOE, theTest);
// get a pointer to the A matrix of the FullLinearSOE
const Matrix *tmp = theFullLinSOE->getA();
if (tmp == 0) {
opserr << "WARNING KRAlphaExplicit::domainChanged() - ";
opserr << "failed to get A matrix of FullGeneral LinearSOE\n";
return -5;
}
// calculate the integration parameter matrices
c1 = beta*deltaT*deltaT;
c2 = gamma*deltaT;
c3 = 1.0;
this->TransientIntegrator::formTangent(INITIAL_TANGENT);
Matrix A(*tmp);
c1 *= (1.0 - alphaF);
c2 *= (1.0 - alphaF);
c3 = (1.0 -alphaM);
this->TransientIntegrator::formTangent(INITIAL_TANGENT);
Matrix B3(*tmp);
// solve [M + gamma*deltaT*C + beta*deltaT^2*K]*[alpha3] =
// [alphaM*M + alphaF*gamma*deltaT*C + alphaF*beta*deltaT^2*K] for alpha3
A.Solve(B3, *alpha3);
c1 = 0.0;
c2 = 0.0;
c3 = 1.0;
this->TransientIntegrator::formTangent(INITIAL_TANGENT);
Matrix B1(*tmp);
// solve [M + gamma*deltaT*C + beta*deltaT^2*K]*[alpha1] = [M] for alpha1
A.Solve(B1, *alpha1);
// calculate the effective mass matrix Mhat
Mhat->addMatrix(0.0, B1, 1.0);
Mhat->addMatrixProduct(1.0, B1, *alpha3, -1.0);
// switch the SOE back to the user specified one
this->IncrementalIntegrator::setLinks(*theModel, *theLinSOE, theTest);
initAlphaMatrices = 0;
}
if (U == 0) {
opserr << "WARNING KRAlphaExplicit::newStep() - domainChange() failed or hasn't been called\n";
return -6;
}
// set response at t to be that at t+deltaT of previous step
(*Ut) = *U;
(*Utdot) = *Udot;
(*Utdotdot) = *Udotdot;
// determine new response at time t+deltaT
//U->addVector(1.0, *Utdot, deltaT);
//double a1 = (0.5 + gamma)*deltaT*deltaT
//U->addMatrixVector(1.0, *alpha1, *Utdotdot, a1);
//Udot->addMatrixVector(1.0, *alpha1, *Utdotdot, deltaT);
// determine new response at time t+deltaT
Utdothat->addMatrixVector(0.0, *alpha1, *Utdotdot, deltaT);
U->addVector(1.0, *Utdot, deltaT);
double a1 = (0.5 + gamma)*deltaT;
U->addVector(1.0, *Utdothat, a1);
Udot->addVector(1.0, *Utdothat, 1.0);
// determine the response at t+alpha*deltaT
Ualpha->addVector(0.0, *Ut, (1.0-alphaF));
Ualpha->addVector(1.0, *U, alphaF);
Ualphadot->addVector(0.0, *Utdot, (1.0-alphaF));
Ualphadot->addVector(1.0, *Udot, alphaF);
Ualphadotdot->addMatrixVector(0.0, *alpha3, *Utdotdot, 1.0);
// set the trial response quantities
theModel->setResponse(*Ualpha, *Ualphadot, *Ualphadotdot);
// increment the time to t+alpha*deltaT and apply the load
double time = theModel->getCurrentDomainTime();
time += alphaF*deltaT;
if (theModel->updateDomain(time, deltaT) < 0) {
opserr << "WARNING KRAlphaExplicit::newStep() - failed to update the domain\n";
return -7;
}
return 0;
}
int KRAlphaExplicit::domainChanged()
{
AnalysisModel *myModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
const Vector &x = theLinSOE->getX();
int size = x.Size();
// create the new Matrix and Vector objects
if (Ut == 0 || Ut->Size() != size) {
// delete the old
if (alpha1 != 0)
delete alpha1;
if (alpha3 != 0)
delete alpha3;
if (Mhat != 0)
delete Mhat;
if (Ut != 0)
delete Ut;
if (Utdot != 0)
delete Utdot;
if (Utdotdot != 0)
delete Utdotdot;
if (U != 0)
delete U;
if (Udot != 0)
delete Udot;
if (Udotdot != 0)
delete Udotdot;
if (Ualpha != 0)
delete Ualpha;
if (Ualphadot != 0)
delete Ualphadot;
if (Ualphadotdot != 0)
delete Ualphadotdot;
if (Utdothat != 0)
delete Utdothat;
// create the new
alpha1 = new Matrix(size,size);
alpha3 = new Matrix(size,size);
Mhat = new Matrix(size,size);
Ut = new Vector(size);
Utdot = new Vector(size);
Utdotdot = new Vector(size);
U = new Vector(size);
Udot = new Vector(size);
Udotdot = new Vector(size);
Ualpha = new Vector(size);
Ualphadot = new Vector(size);
Ualphadotdot = new Vector(size);
Utdothat = new Vector(size);
// check we obtained the new
if (alpha1 == 0 || alpha1->noRows() != size || alpha1->noCols() != size ||
alpha3 == 0 || alpha3->noRows() != size || alpha3->noCols() != size ||
Mhat == 0 || Mhat->noRows() != size || Mhat->noCols() != size ||
Ut == 0 || Ut->Size() != size ||
Utdot == 0 || Utdot->Size() != size ||
Utdotdot == 0 || Utdotdot->Size() != size ||
U == 0 || U->Size() != size ||
Udot == 0 || Udot->Size() != size ||
Udotdot == 0 || Udotdot->Size() != size ||
Ualpha == 0 || Ualpha->Size() != size ||
Ualphadot == 0 || Ualphadot->Size() != size ||
Ualphadotdot == 0 || Ualphadotdot->Size() != size ||
Utdothat == 0 || Utdothat->Size() != size) {
opserr << "WARNING KRAlphaExplicit::domainChanged() - ";
opserr << "ran out of memory\n";
// delete the old
if (alpha1 != 0)
delete alpha1;
if (alpha3 != 0)
delete alpha3;
if (Mhat != 0)
delete Mhat;
if (Ut != 0)
delete Ut;
if (Utdot != 0)
delete Utdot;
if (Utdotdot != 0)
delete Utdotdot;
if (U != 0)
delete U;
if (Udot != 0)
delete Udot;
if (Udotdot != 0)
delete Udotdot;
if (Ualpha != 0)
delete Ualpha;
if (Ualphadot != 0)
delete Ualphadot;
if (Ualphadotdot != 0)
delete Ualphadotdot;
if (Utdothat != 0)
delete Utdothat;
alpha1 = 0; alpha3 = 0; Mhat = 0;
Ut = 0; Utdot = 0; Utdotdot = 0;
U = 0; Udot = 0; Udotdot = 0;
Ualpha = 0; Ualphadot = 0; Ualphadotdot = 0;
Utdothat = 0;
return -1;
}
}
// now go through and populate U, Udot and Udotdot by iterating through
// the DOF_Groups and getting the last committed velocity and accel
DOF_GrpIter &theDOFs = myModel->getDOFs();
DOF_Group *dofPtr;
while ((dofPtr = theDOFs()) != 0) {
const ID &id = dofPtr->getID();
int idSize = id.Size();
int i;
const Vector &disp = dofPtr->getCommittedDisp();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*U)(loc) = disp(i);
}
}
const Vector &vel = dofPtr->getCommittedVel();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Udot)(loc) = vel(i);
}
}
const Vector &accel = dofPtr->getCommittedAccel();
for (i=0; i < idSize; i++) {
int loc = id(i);
if (loc >= 0) {
(*Udotdot)(loc) = accel(i);
}
}
}
// recalculate integration parameter matrices b/c domain changed
initAlphaMatrices = 1;
return 0;
}
