int
DisplacementControl::update(const Vector &dU)
{
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 DisplacementControl::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();
double dUahat = (*deltaUhat)(theDofID);
if (dUahat == 0.0) {
opserr << "WARNING DisplacementControl::update() ";
opserr << "dUahat is zero -- zero reference displacement at control node DOF\n";
return -1;
}
// determine delta lambda(1) == dlambda
double dLambda = -dUabar/dUahat;
// 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 << "DisplacementControl::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);
numIncrLastStep++;
return 0;
}
int CollocationHSFixedNumIter::commit(void)
{
AnalysisModel *theModel = this->getAnalysisModel();
if (theModel == 0) {
opserr << "WARNING CollocationHSFixedNumIter::commit() - no AnalysisModel set\n";
return -1;
}
LinearSOE *theSOE = this->getLinearSOE();
if (theSOE == 0) {
opserr << "WARNING CollocationHSFixedNumIter::commit() - no LinearSOE set\n";
return -2;
}
if (theSOE->solve() < 0) {
opserr << "WARNING CollocationHSFixedNumIter::commit() - "
<< "the LinearSysOfEqn failed in solve()\n";
return -3;
}
const Vector &deltaU = theSOE->getX();
// determine the response at t+theta*deltaT
U->addVector(1.0, deltaU, c1);
Udot->addVector(1.0, deltaU, c2);
Udotdot->addVector(1.0, deltaU, c3);
// determine response quantities at t+deltaT
Udotdot->addVector(1.0/theta, *Utdotdot, (theta-1.0)/theta);
(*Udot) = *Utdot;
double a1 = deltaT*(1.0 - gamma);
double a2 = deltaT*gamma;
Udot->addVector(1.0, *Utdotdot, a1);
Udot->addVector(1.0, *Udotdot, a2);
(*U) = *Ut;
U->addVector(1.0, *Utdot, deltaT);
double a3 = deltaT*deltaT*(0.5 - beta);
double a4 = deltaT*deltaT*beta;
U->addVector(1.0, *Utdotdot, a3);
U->addVector(1.0, *Udotdot, a4);
// update the response at the DOFs
theModel->setResponse(*U,*Udot,*Udotdot);
// set the time to be t+deltaT
double time = theModel->getCurrentDomainTime();
time += (1.0-theta)*deltaT;
theModel->setCurrentDomainTime(time);
return theModel->commitDomain();
}
int
Linear::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();
LinearSOE *theSOE = this->getLinearSOEptr();
IncrementalIntegrator *theIncIntegrator =
this->getIncrementalIntegratorPtr();
if ((theAnalysisModel == 0) || (theIncIntegrator ==0 ) || (theSOE == 0)) {
opserr << "WARNING Linear::solveCurrentStep() -";
opserr << "setLinks() has not been called.\n";
return -5;
}
if (factorOnce != 2) {
if (theIncIntegrator->formTangent(incrTangent) < 0) {
opserr << "WARNING Linear::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
if (factorOnce == 1)
factorOnce = 2;
}
if (theIncIntegrator->formUnbalance() < 0) {
opserr << "WARNING Linear::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
if (theSOE->solve() < 0) {
opserr << "WARNING Linear::solveCurrentStep() -";
opserr << "the LinearSOE failed in solve()\n";
return -3;
}
const Vector &deltaU = theSOE->getX();
if (theIncIntegrator->update(deltaU) < 0) {
opserr << "WARNING Linear::solveCurrentStep() -";
opserr << "the Integrator failed in update()\n";
return -4;
}
return 0;
}
int
ArcLength::newStep(void)
{
// get pointers to AnalysisModel and LinearSOE
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING ArcLength::newStep() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
// get the current load factor
currentLambda = theModel->getCurrentDomainTime();
if (deltaLambdaStep < 0)
signLastDeltaLambdaStep = -1;
else
signLastDeltaLambdaStep = +1;
// determine dUhat
this->formTangent();
theLinSOE->setB(*phat);
if (theLinSOE->solve() < 0) {
opserr << "ArcLength::newStep(void) - failed in solver\n";
return -1;
}
(*deltaUhat) = theLinSOE->getX();
Vector &dUhat = *deltaUhat;
// determine delta lambda(1) == dlambda
double dLambda = sqrt(arcLength2/((dUhat^dUhat)+alpha2));
dLambda *= signLastDeltaLambdaStep; // base sign of load change
// on what was happening last step
deltaLambdaStep = dLambda;
currentLambda += dLambda;
// 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);
theModel->updateDomain();
return 0;
}
int
ArcLength1::update(const Vector &dU)
{
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING ArcLength1::update() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
(*deltaUbar) = dU; // have to do this as the SOE is gonna change
// determine dUhat
theLinSOE->setB(*phat);
theLinSOE->solve();
(*deltaUhat) = theLinSOE->getX();
// determine delta lambda(i)
double a = (*deltaUstep)^(*deltaUbar);
double b = (*deltaUstep)^(*deltaUhat) + alpha2*deltaLambdaStep;
if (b == 0) {
opserr << "ArcLength1::update() - zero denominator,";
opserr << " alpha was set to 0.0 and zero reference load\n";
return -1;
}
double dLambda = -a/b;
// 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);
theModel->updateDomain();
// set the X soln in linearSOE to be deltaU for convergence Test
theLinSOE->setX(*deltaU);
return 0;
}
int
ArcLengthw::update(const Vector &dU)
{
ofstream factor;
factor.open("FS.dat",ios::app);
factor<<"insideupdate"<<endln;
//factor>>dU;
factor<<"insideupdate1"<<endln;
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;
}
(*deltaUbar) = dU; // have to do this as the SOE is gonna change
// determine dUhat
theLinSOE->setB(*phat);
theLinSOE->solve();
(*deltaUhat) = theLinSOE->getX();
double dLambda = -((*phat)^(*deltaUbar))/((*phat)^(*deltaUhat));
(*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);
theModel->updateDomain();
// set the X soln in linearSOE to be deltaU for convergence Test
theLinSOE->setX(*deltaU);
return 0;
}
int HHTHSFixedNumIter::commit(void)
{
AnalysisModel *theModel = this->getAnalysisModel();
if (theModel == 0) {
opserr << "WARNING HHTHSFixedNumIter::commit() - no AnalysisModel set\n";
return -1;
}
LinearSOE *theSOE = this->getLinearSOE();
if (theSOE == 0) {
opserr << "WARNING HHTHSFixedNumIter::commit() - no LinearSOE set\n";
return -2;
}
if (this->formTangent(statusFlag) < 0) {
opserr << "WARNING HHTHSFixedNumIter::commit() - "
<< "the Integrator failed in formTangent()\n";
return -3;
}
if (theSOE->solve() < 0) {
opserr << "WARNING HHTHSFixedNumIter::commit() - "
<< "the LinearSysOfEqn failed in solve()\n";
return -4;
}
const Vector &deltaU = theSOE->getX();
// determine the response at t+deltaT
U->addVector(1.0, deltaU, c1);
Udot->addVector(1.0, deltaU, c2);
Udotdot->addVector(1.0, deltaU, c3);
// update the response at the DOFs
theModel->setResponse(*U,*Udot,*Udotdot);
// set the time to be t+deltaT
double time = theModel->getCurrentDomainTime();
time += (1.0-alphaF)*deltaT;
theModel->setCurrentDomainTime(time);
return theModel->commitDomain();
}
int
ArcLength::update(const Vector &dU)
{
AnalysisModel *theModel = this->getAnalysisModel();
LinearSOE *theLinSOE = this->getLinearSOE();
if (theModel == 0 || theLinSOE == 0) {
opserr << "WARNING ArcLength::update() ";
opserr << "No AnalysisModel or LinearSOE has been set\n";
return -1;
}
(*deltaUbar) = dU; // have to do this as the SOE is gonna change
// determine dUhat
theLinSOE->setB(*phat);
theLinSOE->solve();
(*deltaUhat) = theLinSOE->getX();
// determine the coeeficients of our quadratic equation
double a = alpha2 + ((*deltaUhat)^(*deltaUhat));
double b = alpha2*deltaLambdaStep
+ ((*deltaUhat)^(*deltaUbar))
+ ((*deltaUstep)^(*deltaUhat));
b *= 2.0;
double c = 2*((*deltaUstep)^(*deltaUbar)) + ((*deltaUbar)^(*deltaUbar));
// check for a solution to quadratic
double b24ac = b*b - 4.0*a*c;
if (b24ac < 0) {
opserr << "ArcLength::update() - imaginary roots due to multiple instability";
opserr << " directions - initial load increment was too large\n";
opserr << "a: " << a << " b: " << b << " c: " << c << " b24ac: " << b24ac << endln;
return -1;
}
double a2 = 2.0*a;
if (a2 == 0.0) {
opserr << "ArcLength::update() - zero denominator";
opserr << " alpha was set to 0.0 and zero reference load\n";
return -2;
}
// determine the roots of the quadratic
double sqrtb24ac = sqrt(b24ac);
double dlambda1 = (-b + sqrtb24ac)/a2;
double dlambda2 = (-b - sqrtb24ac)/a2;
double val = (*deltaUhat)^(*deltaUstep);
double theta1 = ((*deltaUstep)^(*deltaUstep)) + ((*deltaUbar)^(*deltaUstep));
// double theta2 = theta1 + dlambda2*val;
theta1 += dlambda1*val;
// choose dLambda based on angle between incremental displacement before
// and after this step -- want positive
double dLambda;
if (theta1 > 0)
dLambda = dlambda1;
else
dLambda = dlambda2;
// 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);
theModel->updateDomain();
// set the X soln in linearSOE to be deltaU for convergence Test
theLinSOE->setX(*deltaU);
return 0;
}
int
KrylovAccelerator2::accelerate(Vector &vStar, LinearSOE &theSOE,
IncrementalIntegrator &theIntegrator)
{
const Vector &R = theSOE.getB();
int k = dimension;
// Store residual for differencing at next iteration
*(Av[k]) = R;
// If subspace is not empty
if (dimension > 0) {
// Compute Av_k = f(y_{k-1}) - f(y_k) = r_{k-1} - r_k
Av[k-1]->addVector(1.0, R, -1.0);
int i,j;
// Put subspace vectors into AvData
Matrix A(AvData, numEqns, k);
for (i = 0; i < k; i++) {
Vector &Ai = *(Av[i]);
for (j = 0; j < numEqns; j++)
A(j,i) = Ai(j);
}
for (i = 0; i < k; i++) {
for (int j = i+1; j < k; j++) {
double sum = 0.0;
double sumi = 0.0;
double sumj = 0.0;
for (int ii = 0; ii < numEqns; ii++) {
sum += A(ii,i)*A(ii,j);
sumi += A(ii,i)*A(ii,i);
sumj += A(ii,j)*A(ii,j);
}
sumi = sqrt(sumi);
sumj = sqrt(sumj);
sum = sum/(sumi*sumj);
//if (fabs(sum) > 0.99)
//opserr << sum << ' ' << i << ' ' << j << " ";
}
}
// Put residual vector into rData (need to save r for later!)
Vector B(rData, numEqns);
B = R;
// No transpose
char *trans = "N";
// The number of right hand side vectors
int nrhs = 1;
// Leading dimension of the right hand side vector
int ldb = (numEqns > k) ? numEqns : k;
// Subroutine error flag
int info = 0;
// Call the LAPACK least squares subroutine
#ifdef _WIN32
unsigned int sizeC = 1;
DGELS(trans, &sizeC, &numEqns, &k, &nrhs, AvData, &numEqns,
rData, &ldb, work, &lwork, &info);
#else
//SUBROUTINE DGELS( TRANS, M, N, NRHS, A, LDA, B, LDB, WORK, LWORK,
// $ INFO )
dgels_(trans, &numEqns, &k, &nrhs, AvData, &numEqns,
rData, &ldb, work, &lwork, &info);
#endif
// Check for error returned by subroutine
if (info < 0) {
opserr << "WARNING KrylovAccelerator2::accelerate() - \n";
opserr << "error code " << info << " returned by LAPACK dgels\n";
return info;
}
Vector Q(numEqns);
Q = R;
// Compute the correction vector
double cj;
for (j = 0; j < k; j++) {
// Solution to least squares is written to rData
cj = rData[j];
// Compute w_{k+1} = c_1 v_1 + ... + c_k v_k
vStar.addVector(1.0, *(v[j]), cj);
// Compute least squares residual
// q_{k+1} = r_k - (c_1 Av_1 + ... + c_k Av_k)
Q.addVector(1.0, *(Av[j]), -cj);
}
theSOE.setB(Q);
//opserr << "Q: " << Q << endln;
}
theSOE.solve();
vStar.addVector(1.0, theSOE.getX(), 1.0);
// Put accelerated vector into storage for next iteration
*(v[k]) = vStar;
dimension++;
return 0;
}
int
NewtonLineSearch::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 *theAnaModel = this->getAnalysisModelPtr();
IncrementalIntegrator *theIntegrator = this->getIncrementalIntegratorPtr();
LinearSOE *theSOE = this->getLinearSOEptr();
if ((theAnaModel == 0) || (theIntegrator == 0) || (theSOE == 0)
|| (theTest == 0)){
opserr << "WARNING NewtonLineSearch::solveCurrentStep() - setLinks() has";
opserr << " not been called - or no ConvergenceTest has been set\n";
return -5;
}
theLineSearch->newStep(*theSOE);
// set itself as the ConvergenceTest objects EquiSolnAlgo
theTest->setEquiSolnAlgo(*this);
if (theTest->start() < 0) {
opserr << "NewtonLineSearch::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in start()\n";
return -3;
}
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING NewtonLineSearch::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
int result = -1;
do {
//residual at this iteration before next solve
const Vector &Resid0 = theSOE->getB() ;
//form the tangent
if (theIntegrator->formTangent() < 0){
opserr << "WARNING NewtonLineSearch::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
//solve
if (theSOE->solve() < 0) {
opserr << "WARNING NewtonLineSearch::solveCurrentStep() -";
opserr << "the LinearSysOfEqn failed in solve()\n";
return -3;
}
//line search direction
const Vector &dx0 = theSOE->getX() ;
//intial value of s
double s0 = - (dx0 ^ Resid0) ;
if (theIntegrator->update(theSOE->getX()) < 0) {
opserr << "WARNING NewtonLineSearch::solveCurrentStep() -";
opserr << "the Integrator failed in update()\n";
return -4;
}
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING NewtonLineSearch::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
// do a line search only if convergence criteria not met
theOtherTest->start();
result = theOtherTest->test();
if (result < 1) {
//new residual
const Vector &Resid = theSOE->getB() ;
//new value of s
double s = - ( dx0 ^ Resid ) ;
if (theLineSearch != 0)
theLineSearch->search(s0, s, *theSOE, *theIntegrator);
}
this->record(0);
result = theTest->test();
} while (result == -1);
if (result == -2) {
opserr << "NewtonLineSearch::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in test()\n";
return -3;
}
// note - if postive result we are returning what the convergence test returned
// which should be the number of iterations
return result;
}
int
NewtonRaphson::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 *theAnaModel = this->getAnalysisModelPtr();
IncrementalIntegrator *theIntegrator = this->getIncrementalIntegratorPtr();
LinearSOE *theSOE = this->getLinearSOEptr();
if ((theAnaModel == 0) || (theIntegrator == 0) || (theSOE == 0)
|| (theTest == 0)){
opserr << "WARNING NewtonRaphson::solveCurrentStep() - setLinks() has";
opserr << " not been called - or no ConvergenceTest has been set\n";
return -5;
}
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
// set itself as the ConvergenceTest objects EquiSolnAlgo
theTest->setEquiSolnAlgo(*this);
if (theTest->start() < 0) {
opserr << "NewtnRaphson::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in start()\n";
return -3;
}
int result = -1;
int count = 0;
do {
if (tangent == INITIAL_THEN_CURRENT_TANGENT) {
if (count == 0) {
if (theIntegrator->formTangent(INITIAL_TANGENT) < 0){
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
} else {
if (theIntegrator->formTangent(CURRENT_TANGENT) < 0){
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
}
} else {
if (theIntegrator->formTangent(tangent) < 0){
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
}
if (theSOE->solve() < 0) {
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the LinearSysOfEqn failed in solve()\n";
return -3;
}
if (theIntegrator->update(theSOE->getX()) < 0) {
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the Integrator failed in update()\n";
return -4;
}
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING NewtonRaphson::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
return -2;
}
result = theTest->test();
this->record(count++);
} while (result == -1);
if (result == -2) {
opserr << "NewtnRaphson::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in test()\n";
return -3;
}
// note - if postive result we are returning what the convergence test returned
// which should be the number of iterations
return result;
}
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
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
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
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
BFGS::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 *theAnaModel = this->getAnalysisModelPtr();
IncrementalIntegrator *theIntegrator = this->getIncrementalIntegratorPtr();
LinearSOE *theSOE = this->getLinearSOEptr();
if ((theAnaModel == 0) || (theIntegrator == 0) || (theSOE == 0)
|| (theTest == 0)){
opserr << "WARNING BFGS::solveCurrentStep() - setLinks() has";
opserr << " not been called - or no ConvergenceTest has been set\n";
return -5;
}
// set itself as the ConvergenceTest objects EquiSolnAlgo
theTest->setEquiSolnAlgo(*this);
if (theTest->start() < 0) {
opserr << "BFGS::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in start()\n";
return -3;
}
localTest->setEquiSolnAlgo(*this);
if (rdotz == 0)
rdotz = new double[numberLoops+3];
if (sdotr == 0)
sdotr = new double[numberLoops+3];
int result = -1;
int count = 0;
do {
// opserr << " BFGS -- Forming New Tangent" << endln;
//form the initial tangent
if (theIntegrator->formTangent(tangent) < 0){
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the Integrator failed in formTangent()\n";
return -1;
}
//form the initial residual
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
}
//solve
if (theSOE->solve() < 0) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the LinearSysOfEqn failed in solve()\n";
return -3;
}
//update
if ( theIntegrator->update(theSOE->getX() ) < 0) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the Integrator failed in update()\n";
return -4;
}
// int systemSize = ( theSOE->getB() ).Size();
int systemSize = theSOE->getNumEqn( );
//temporary vector
if (temp == 0 )
temp = new Vector(systemSize);
//initial displacement increment
if ( s[1] == 0 )
s[1] = new Vector(systemSize);
*s[1] = theSOE->getX( );
if ( residOld == 0 )
residOld = new Vector(systemSize);
*residOld = theSOE->getB( ) ;
*residOld *= (-1.0 );
//form the residual again
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
}
if ( residNew == 0 )
residNew = new Vector(systemSize);
if ( du == 0 )
du = new Vector(systemSize);
if ( b == 0 )
b = new Vector(systemSize);
localTest->start();
int nBFGS = 1;
do {
//save residual
*residNew = theSOE->getB( );
*residNew *= (-1.0 );
//solve
if (theSOE->solve() < 0) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the LinearSysOfEqn failed in solve()\n";
return -3;
}
//save right hand side
*b = theSOE->getB( );
//save displacement increment
*du = theSOE->getX( );
//BFGS modifications to du
BFGSUpdate( theIntegrator, theSOE, *du, *b, nBFGS ) ;
if ( theIntegrator->update( *du ) < 0 ) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the Integrator failed in update()\n";
return -4;
}
/* opserr << " BFGS Iteration " << nBFGS
<< " Residual Norm = "
<< sqrt( (*residNew) ^ (*residNew) ) << endln;
*/
//increment broyden counter
nBFGS += 1;
//save displacement increment
if ( s[nBFGS] == 0 )
s[nBFGS] = new Vector(systemSize);
*s[nBFGS] = *du;
//swap residuals
*residOld = *residNew;
//form the residual again
if (theIntegrator->formUnbalance() < 0) {
opserr << "WARNING BFGS::solveCurrentStep() -";
opserr << "the Integrator failed in formUnbalance()\n";
}
result = localTest->test();
} while ( result == -1 && nBFGS <= numberLoops );
result = theTest->test();
this->record(count++);
} while (result == -1);
if (result == -2) {
opserr << "BFGS::solveCurrentStep() -";
opserr << "the ConvergenceTest object failed in test()\n";
return -3;
}
// note - if postive result we are returning what the convergence test returned
// which should be the number of iterations
return result;
}
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;
}