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FiberSectionGJ.cpp Go to the documentation of this file. /* ****************************************************************** ** ** OpenSees - Open System for Earthquake Engineering Simulation ** ** Pacific Earthquake Engineering Research Center ** ** ** ** ** ** (C) Copyright 1999, The Regents of the University of California ** ** All Rights Reserved. ** ** ** ** Commercial use of this program without express permission of the ** ** University of California, Berkeley, is strictly prohibited. See ** ** file 'COPYRIGHT' in main directory for information on usage and ** ** redistribution, and for a DISCLAIMER OF ALL WARRANTIES. ** ** ** ** Developed by: ** ** Frank McKenna (fmckenna@ce.berkeley.edu) ** ** Gregory L. Fenves (fenves@ce.berkeley.edu) ** ** Filip C. Filippou (filippou@ce.berkeley.edu) ** ** ** ** ****************************************************************** */ // $Revision: 1.6 $ // $Date: 2006/09/05 23:29:17 $ // $Source: /usr/local/cvs/OpenSees/SRC/material/section/FiberSectionGJ.cpp,v $ // Written: fmk // Created: 04/04 // // Description: This file contains the class implementation of FiberSection2d. #include <stdlib.h> #include <Channel.h> #include <Vector.h> #include <Matrix.h> #include <MatrixUtil.h> #include <Fiber.h> #include <classTags.h> #include <FiberSectionGJ.h> #include <ID.h> #include <FEM_ObjectBroker.h> #include <Information.h> #include <MaterialResponse.h> #include <UniaxialMaterial.h> ID FiberSectionGJ::code(4); Vector FiberSectionGJ::s(4); Matrix FiberSectionGJ::ks(4,4); // constructors: FiberSectionGJ::FiberSectionGJ(int tag, int num, Fiber **fibers, double gj): SectionForceDeformation(tag, SEC_TAG_FiberSectionGJ), numFibers(num), theMaterials(0), matData(0), yBar(0.0), zBar(0.0), e(4), eCommit(4), GJ(gj) { if (numFibers != 0) { theMaterials = new UniaxialMaterial *[numFibers]; if (theMaterials == 0) { opserr << "FiberSectionGJ::FiberSectionGJ -- failed to allocate Material pointers\n"; exit(-1); } matData = new double [numFibers*3]; if (matData == 0) { opserr << "FiberSectionGJ::FiberSectionGJ -- failed to allocate double array for material data\n"; exit(-1); } double Qz = 0.0; double Qy = 0.0; double A = 0.0; for (int i = 0; i < numFibers; i++) { Fiber *theFiber = fibers[i]; double yLoc, zLoc, Area; theFiber->getFiberLocation(yLoc, zLoc); Area = theFiber->getArea(); Qz += yLoc*Area; Qy += zLoc*Area; A += Area; matData[i*3] = -yLoc; matData[i*3+1] = zLoc; matData[i*3+2] = Area; UniaxialMaterial *theMat = theFiber->getMaterial(); theMaterials[i] = theMat->getCopy(); if (theMaterials[i] == 0) { opserr << "FiberSectionGJ::FiberSectionGJ -- failed to get copy of a Material\n"; exit(-1); } } yBar = -Qz/A; zBar = Qy/A; } sData[0] = 0.0; sData[1] = 0.0; sData[2] = 0.0; for (int i=0; i<6; i++) kData[i] = 0.0; code(0) = SECTION_RESPONSE_P; code(1) = SECTION_RESPONSE_MZ; code(2) = SECTION_RESPONSE_MY; code(3) = SECTION_RESPONSE_T; } // constructor for blank object that recvSelf needs to be invoked upon FiberSectionGJ::FiberSectionGJ(): SectionForceDeformation(0, SEC_TAG_FiberSectionGJ), numFibers(0), theMaterials(0), matData(0), yBar(0.0), zBar(0.0), e(4), eCommit(4), GJ(1.0) { sData[0] = 0.0; sData[1] = 0.0; sData[2] = 0.0; for (int i=0; i<6; i++) kData[i] = 0.0; code(0) = SECTION_RESPONSE_P; code(1) = SECTION_RESPONSE_MZ; code(2) = SECTION_RESPONSE_MY; code(3) = SECTION_RESPONSE_T; } int FiberSectionGJ::addFiber(Fiber &newFiber) { // need to create a larger array int newSize = numFibers+1; UniaxialMaterial **newArray = new UniaxialMaterial *[newSize]; double *newMatData = new double [3 * newSize]; if (newArray == 0 || newMatData == 0) { opserr << "FiberSectionGJ::addFiber -- failed to allocate Fiber pointers\n"; return -1; } // copy the old pointers int i; for (i = 0; i < numFibers; i++) { newArray[i] = theMaterials[i]; newMatData[3*i] = matData[3*i]; newMatData[3*i+1] = matData[3*i+1]; newMatData[3*i+2] = matData[3*i+2]; } // set the new pointers double yLoc, zLoc, Area; newFiber.getFiberLocation(yLoc, zLoc); Area = newFiber.getArea(); newMatData[numFibers*3] = -yLoc; newMatData[numFibers*3+1] = zLoc; newMatData[numFibers*3+2] = Area; UniaxialMaterial *theMat = newFiber.getMaterial(); newArray[numFibers] = theMat->getCopy(); if (newArray[numFibers] == 0) { opserr << "FiberSectionGJ::addFiber -- failed to get copy of a Material\n"; delete [] newArray; delete [] newMatData; return -1; } numFibers++; if (theMaterials != 0) { delete [] theMaterials; delete [] matData; } theMaterials = newArray; matData = newMatData; double Qz = 0.0; double Qy = 0.0; double A = 0.0; // Recompute centroid for (i = 0; i < numFibers; i++) { yLoc = -matData[2*i]; zLoc = matData[2*i+1]; Area = matData[2*i+2]; A += Area; Qz += yLoc*Area; Qy += zLoc*Area; } yBar = -Qz/A; zBar = Qy/A; return 0; } // destructor: FiberSectionGJ::~FiberSectionGJ() { if (theMaterials != 0) { for (int i = 0; i < numFibers; i++) if (theMaterials[i] != 0) delete theMaterials[i]; delete [] theMaterials; } if (matData != 0) delete [] matData; } int FiberSectionGJ::setTrialSectionDeformation (const Vector &deforms) { int res = 0; e = deforms; kData[0] = 0.0; kData[1] = 0.0; kData[2] = 0.0; kData[3] = 0.0; kData[4] = 0.0; kData[5] = 0.0; sData[0] = 0.0; sData[1] = 0.0; sData[2] = 0.0; int loc = 0; double d0 = deforms(0); double d1 = deforms(1); double d2 = deforms(2); for (int i = 0; i < numFibers; i++) { UniaxialMaterial *theMat = theMaterials[i]; double y = matData[loc++] - yBar; double z = matData[loc++] - zBar; double A = matData[loc++]; // determine material strain and set it double strain = d0 + y*d1 + z*d2; double tangent, stress; res = theMat->setTrial(strain, stress, tangent); double value = tangent * A; double vas1 = y*value; double vas2 = z*value; double vas1as2 = vas1*z; kData[0] += value; kData[1] += vas1; kData[2] += vas2; kData[3] += vas1 * y; kData[4] += vas1as2; kData[5] += vas2 * z; double fs0 = stress * A; sData[0] += fs0; sData[1] += fs0 * y; sData[2] += fs0 * z; } return res; } const Matrix& FiberSectionGJ::getInitialTangent(void) { kData[0] = 0.0; kData[1] = 0.0; kData[2] = 0.0; kData[3] = 0.0; kData[4] = 0.0; kData[5] = 0.0; int loc = 0; for (int i = 0; i < numFibers; i++) { UniaxialMaterial *theMat = theMaterials[i]; double y = matData[loc++] - yBar; double z = matData[loc++] - zBar; double A = matData[loc++]; double tangent = theMat->getInitialTangent(); double value = tangent * A; double vas1 = y*value; double vas2 = z*value; double vas1as2 = vas1*z; kData[0] += value; kData[1] += vas1; kData[2] += vas2; kData[3] += vas1 * y; kData[4] += vas1as2; kData[5] += vas2 * z; } ks(0,0) = kData[0]; ks(0,1) = ks(1,0) = kData[1]; ks(0,2) = ks(2,0) = kData[2]; ks(1,1) = kData[3]; ks(1,2) = ks(2,1) = kData[4]; ks(2,2) = kData[5]; ks(3,3) = GJ; return ks; } const Vector& FiberSectionGJ::getSectionDeformation(void) { return e; } const Matrix& FiberSectionGJ::getSectionTangent(void) { ks(0,0) = kData[0]; ks(0,1) = ks(1,0) = kData[1]; ks(0,2) = ks(2,0) = kData[2]; ks(1,1) = kData[3]; ks(1,2) = ks(2,1) = kData[4]; ks(2,2) = kData[5]; ks(3,3) = GJ; return ks; } const Vector& FiberSectionGJ::getStressResultant(void) { s(0) = sData[0]; s(1) = sData[1]; s(2) = sData[2]; s(3) = GJ*e(3); return s; } SectionForceDeformation* FiberSectionGJ::getCopy(void) { FiberSectionGJ *theCopy = new FiberSectionGJ(); theCopy->setTag(this->getTag()); theCopy->numFibers = numFibers; if (numFibers != 0) { theCopy->theMaterials = new UniaxialMaterial *[numFibers]; if (theCopy->theMaterials == 0) { opserr << "FiberSectionGJ::FiberSectionGJ -- failed to allocate Material pointers\n"; exit(-1); } theCopy->matData = new double [numFibers*3]; if (theCopy->matData == 0) { opserr << "FiberSectionGJ::FiberSectionGJ -- failed to allocate double array for material data\n"; exit(-1); } for (int i = 0; i < numFibers; i++) { theCopy->matData[i*3] = matData[i*3]; theCopy->matData[i*3+1] = matData[i*3+1]; theCopy->matData[i*3+2] = matData[i*3+2]; theCopy->theMaterials[i] = theMaterials[i]->getCopy(); if (theCopy->theMaterials[i] == 0) { opserr << "FiberSectionGJ::getCopy -- failed to get copy of a Material\n"; exit(-1); } } } theCopy->eCommit = eCommit; theCopy->e = e; theCopy->yBar = yBar; theCopy->zBar = zBar; for (int i=0; i<6; i++) theCopy->kData[i] = kData[i]; theCopy->sData[0] = sData[0]; theCopy->sData[1] = sData[1]; theCopy->sData[2] = sData[2]; theCopy->GJ = GJ; return theCopy; } const ID& FiberSectionGJ::getType () { return code; } int FiberSectionGJ::getOrder () const { return 4; } int FiberSectionGJ::commitState(void) { int err = 0; for (int i = 0; i < numFibers; i++) err += theMaterials[i]->commitState(); eCommit = e; return err; } int FiberSectionGJ::revertToLastCommit(void) { int err = 0; // Last committed section deformations e = eCommit; kData[0] = 0.0; kData[1] = 0.0; kData[2] = 0.0; kData[3] = 0.0; kData[4] = 0.0; kData[5] = 0.0; sData[0] = 0.0; sData[1] = 0.0; sData[2] = 0.0; int loc = 0; for (int i = 0; i < numFibers; i++) { UniaxialMaterial *theMat = theMaterials[i]; double y = matData[loc++] - yBar; double z = matData[loc++] - zBar; double A = matData[loc++]; // invoke revertToLast on the material err += theMat->revertToLastCommit(); double tangent = theMat->getTangent(); double stress = theMat->getStress(); double value = tangent * A; double vas1 = y*value; double vas2 = z*value; double vas1as2 = vas1*z; kData[0] += value; kData[1] += vas1; kData[2] += vas2; kData[3] += vas1 * y; kData[4] += vas1as2; kData[5] += vas2 * z; double fs0 = stress * A; sData[0] += fs0; sData[1] += fs0 * y; sData[2] += fs0 * z; } return err; } int FiberSectionGJ::revertToStart(void) { // revert the fibers to start int err = 0; kData[0] = 0.0; kData[1] = 0.0; kData[2] = 0.0; kData[3] = 0.0; kData[4] = 0.0; kData[5] = 0.0; sData[0] = 0.0; sData[1] = 0.0; sData[2] = 0.0; int loc = 0; for (int i = 0; i < numFibers; i++) { UniaxialMaterial *theMat = theMaterials[i]; double y = matData[loc++] - yBar; double z = matData[loc++] - zBar; double A = matData[loc++]; // invoke revertToStart on the material err += theMat->revertToStart(); double tangent = theMat->getTangent(); double stress = theMat->getStress(); double value = tangent * A; double vas1 = y*value; double vas2 = z*value; double vas1as2 = vas1*z; kData[0] += value; kData[1] += vas1; kData[2] += vas2; kData[3] += vas1 * y; kData[4] += vas1as2; kData[5] += vas2 * z; double fs0 = stress * A; sData[0] += fs0; sData[1] += fs0 * y; sData[2] += fs0 * z; } return err; } int FiberSectionGJ::sendSelf(int commitTag, Channel &theChannel) { int res = 0; // create an id to send objects tag and numFibers, // size 4 so no conflict with fiberData below if just 1 fiber static Vector data(4); data(0) = this->getTag(); data(1) = numFibers; data(2) = GJ; int dbTag = this->getDbTag(); res += theChannel.sendVector(dbTag, commitTag, data); if (res < 0) { opserr << "FiberSection2d::sendSelf - failed to send ID data\n"; return res; } if (numFibers != 0) { // create an id containingg classTag and dbTag for each material & send it ID materialData(2*numFibers); for (int i=0; i<numFibers; i++) { UniaxialMaterial *theMat = theMaterials[i]; materialData(2*i) = theMat->getClassTag(); int matDbTag = theMat->getDbTag(); if (matDbTag == 0) { matDbTag = theChannel.getDbTag(); if (matDbTag != 0) theMat->setDbTag(matDbTag); } materialData(2*i+1) = matDbTag; } res += theChannel.sendID(dbTag, commitTag, materialData); if (res < 0) { opserr << "FiberSection2d::sendSelf- failed to send material data\n"; return res; } // send the fiber data, i.e. area and loc Vector fiberData(matData, 3*numFibers); res += theChannel.sendVector(dbTag, commitTag, fiberData); if (res < 0) { opserr << "FiberSection2d::sendSelf - failed to send material data\n"; return res; } // now invoke send(0 on all the materials for (int j=0; j<numFibers; j++) theMaterials[j]->sendSelf(commitTag, theChannel); } return res; } int FiberSectionGJ::recvSelf(int commitTag, Channel &theChannel, FEM_ObjectBroker &theBroker) { int res = 0; static Vector data(4); int dbTag = this->getDbTag(); res += theChannel.recvVector(dbTag, commitTag, data); if (res < 0) { opserr << "FiberSection2d::recvSelf - failed to recv ID data\n"; return res; } this->setTag((int)data(0)); GJ = data(2); // recv data about materials objects, classTag and dbTag numFibers = (int)data(1); if (numFibers != 0) { ID materialData(2*numFibers); res += theChannel.recvID(dbTag, commitTag, materialData); if (res < 0) { opserr << "FiberSection2d::recvSelf - failed to send material data\n"; return res; } // if current arrays not of correct size, release old and resize if (theMaterials == 0 || numFibers != data(1)) { // delete old stuff if outa date if (theMaterials != 0) { for (int i=0; i<numFibers; i++) delete theMaterials[i]; delete [] theMaterials; if (matData != 0) delete [] matData; matData = 0; theMaterials = 0; } // create memory to hold material pointers and fiber data if (numFibers != 0) { theMaterials = new UniaxialMaterial *[numFibers]; if (theMaterials == 0) { opserr << "FiberSection2d::recvSelf -- failed to allocate Material pointers\n"; exit(-1); } for (int j=0; j<numFibers; j++) theMaterials[j] = 0; matData = new double [numFibers*3]; if (matData == 0) { opserr << "FiberSection2d::recvSelf -- failed to allocate double array for material data\n"; exit(-1); } } } Vector fiberData(matData, 3*numFibers); res += theChannel.recvVector(dbTag, commitTag, fiberData); if (res < 0) { opserr << "FiberSection2d::recvSelf - failed to send material data\n"; return res; } int i; for (i=0; i<numFibers; i++) { int classTag = materialData(2*i); int dbTag = materialData(2*i+1); // if material pointed to is blank or not of corrcet type, // release old and create a new one if (theMaterials[i] == 0) theMaterials[i] = theBroker.getNewUniaxialMaterial(classTag); else if (theMaterials[i]->getClassTag() != classTag) { delete theMaterials[i]; theMaterials[i] = theBroker.getNewUniaxialMaterial(classTag); } if (theMaterials[i] == 0) { opserr << "FiberSection2d::recvSelf -- failed to allocate double array for material data\n"; exit(-1); } theMaterials[i]->setDbTag(dbTag); res += theMaterials[i]->recvSelf(commitTag, theChannel, theBroker); } double Qz = 0.0; double Qy = 0.0; double A = 0.0; double yLoc, zLoc, Area; // Recompute centroid for (i = 0; i < numFibers; i++) { yLoc = -matData[2*i]; zLoc = matData[2*i+1]; Area = matData[2*i+2]; A += Area; Qz += yLoc*Area; Qy += zLoc*Area; } yBar = -Qz/A; zBar = Qy/A; } return res; } void FiberSectionGJ::Print(OPS_Stream &s, int flag) { s << "\nFiberSectionGJ, tag: " << this->getTag() << endln; s << "\tSection code: " << code; s << "\tNumber of Fibers: " << numFibers << endln; s << "\tCentroid: (" << -yBar << ", " << zBar << ')' << endln; s << "\tTorsional Stiffness: " << GJ << endln; if (flag == 1) { int loc = 0; for (int i = 0; i < numFibers; i++) { s << "\nLocation (y, z) = (" << -matData[loc++] << ", " << matData[loc++] << ")"; s << "\nArea = " << matData[loc++] << endln; theMaterials[i]->Print(s, flag); } } } Response* FiberSectionGJ::setResponse(const char **argv, int argc, Information &sectInfo, OPS_Stream &output) { // See if the response is one of the defaults Response *theResponse = SectionForceDeformation::setResponse(argv, argc, sectInfo, output); if (theResponse != 0) return theResponse; if (argc <=2 || strcmp(argv[0],"fiber") != 0) return 0; int key = numFibers; int passarg = 2; if (argc <= 3) { // fiber number was input directly key = atoi(argv[1]); } else if (argc > 4) { // find fiber closest to coord. with mat tag int matTag = atoi(argv[3]); double yCoord = atof(argv[1]); double zCoord = atof(argv[2]); double closestDist; double ySearch, zSearch, dy, dz; double distance; int j; // Find first fiber with specified material tag for (j = 0; j < numFibers; j++) { if (matTag == theMaterials[j]->getTag()) { ySearch = -matData[3*j]; zSearch = matData[3*j+1]; dy = ySearch-yCoord; dz = zSearch-zCoord; closestDist = sqrt(dy*dy + dz*dz); key = j; break; } } // Search the remaining fibers for ( ; j < numFibers; j++) { if (matTag == theMaterials[j]->getTag()) { ySearch = -matData[3*j]; zSearch = matData[3*j+1]; dy = ySearch-yCoord; dz = zSearch-zCoord; distance = sqrt(dy*dy + dz*dz); if (distance < closestDist) { closestDist = distance; key = j; } } } passarg = 4; } else { // fiber near-to coordinate specified double yCoord = atof(argv[1]); double zCoord = atof(argv[2]); double closestDist; double ySearch, zSearch, dy, dz; double distance; ySearch = -matData[0]; zSearch = matData[1]; dy = ySearch-yCoord; dz = zSearch-zCoord; closestDist = sqrt(dy*dy + dz*dz); key = 0; for (int j = 1; j < numFibers; j++) { ySearch = -matData[3*j]; zSearch = matData[3*j+1]; dy = ySearch-yCoord; dz = zSearch-zCoord; distance = sqrt(dy*dy + dz*dz); if (distance < closestDist) { closestDist = distance; key = j; } } passarg = 3; } if (key < numFibers && key >= 0) { output.tag("FiberOutput"); output.attr("yLoc",-matData[2*key]); output.attr("zLoc",matData[2*key+1]); output.attr("area",matData[2*key+2]); theResponse = theMaterials[key]->setResponse(&argv[passarg], argc-passarg, sectInfo, output); output.endTag(); } return theResponse; } int FiberSectionGJ::getResponse(int responseID, Information &sectInfo) { // Just call the base class method ... don't need to define // this function, but keeping it here just for clarity return SectionForceDeformation::getResponse(responseID, sectInfo); } int FiberSectionGJ::setParameter (const char **argv, int argc, Parameter &param) { if (argc < 3) return 0; // A material parameter if (strstr(argv[0],"material") != 0) { // Get the tag of the material int paramMatTag = atoi(argv[1]); // Loop over fibers to find the right material(s) int ok = 0; for (int i = 0; i < numFibers; i++) if (paramMatTag == theMaterials[i]->getTag()) ok += theMaterials[i]->setParameter(&argv[2], argc-2, param); return ok; } else return -1; } Generated on Mon Oct 23 15:05:18 2006 for OpenSees by  1.5.0

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