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UniaxialMaterial.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: 1.15 $ // $Date: 2006/09/05 22:28:08 $ // $Source: /usr/local/cvs/OpenSees/SRC/material/uniaxial/UniaxialMaterial.cpp,v $ // Written: fmk // Created: 05/98 // Revision: A // // Description: This file contains the class implementation for // UniaxialMaterial. // // What: "@(#) UniaxialMaterial.C, revA" #include <UniaxialMaterial.h> #include <string.h> #include <Information.h> #include <MaterialResponse.h> #include <float.h> #include <Vector.h> #include <DataOutputHandler.h> UniaxialMaterial::UniaxialMaterial(int tag, int clasTag) :Material(tag,clasTag) { } UniaxialMaterial::~UniaxialMaterial() { // does nothing } int UniaxialMaterial::setTrial(double strain, double &stress, double &tangent, double strainRate) { int res = this->setTrialStrain(strain, strainRate); if (res == 0) { stress = this->getStress(); tangent = this->getTangent(); } else { opserr << "UniaxialMaterial::setTrial() - material failed in setTrialStrain()\n"; } return res; } // default operation for strain rate is zero double UniaxialMaterial::getStrainRate(void) { return 0.0; } // default operation for damping tangent is zero double UniaxialMaterial::getDampTangent(void) { return 0.0; } // default operation for secant stiffness double UniaxialMaterial::getSecant (void) { double strain = this->getStrain(); double stress = this->getStress(); if (strain != 0.0) return stress/strain; else return this->getTangent(); } double UniaxialMaterial::getRho(void) { return 0.0; } UniaxialMaterial* UniaxialMaterial::getCopy(SectionForceDeformation *s) { return this->getCopy(); } Response* UniaxialMaterial::setResponse(const char **argv, int argc, Information &matInfo, OPS_Stream &theOutput) { Response *theResponse = 0; theOutput.tag("UniaxialMaterialOutput"); theOutput.attr("matType", this->getClassType()); theOutput.attr("matTag", this->getTag()); // stress if (strcmp(argv[0],"stress") == 0) { theOutput.tag("ResponseType", "sigma11"); theResponse = new MaterialResponse(this, 1, this->getStress()); } // tangent else if (strcmp(argv[0],"tangent") == 0) { theOutput.tag("ResponseType", "C11"); theResponse = new MaterialResponse(this, 2, this->getTangent()); } // strain else if (strcmp(argv[0],"strain") == 0) { theOutput.tag("ResponseType", "eps11"); theResponse = new MaterialResponse(this, 3, this->getStrain()); } // strain else if ((strcmp(argv[0],"stressStrain") == 0) || (strcmp(argv[0],"stressANDstrain") == 0)) { theOutput.tag("ResponseType", "sig11"); theOutput.tag("ResponseType", "eps11"); theResponse = new MaterialResponse(this, 4, Vector(2)); } theOutput.endTag(); return theResponse; } int UniaxialMaterial::getResponse(int responseID, Information &matInfo) { static Vector stressStrain(2); // each subclass must implement its own stuff switch (responseID) { case 1: matInfo.setDouble(this->getStress()); return 0; case 2: matInfo.setDouble(this->getTangent()); return 0; case 3: matInfo.setDouble(this->getStrain()); return 0; case 4: stressStrain(0) = this->getStress(); stressStrain(1) = this->getStrain(); matInfo.setVector(stressStrain); return 0; default: return -1; } } // AddingSensitivity:BEGIN //////////////////////////////////////// double UniaxialMaterial::getStressSensitivity(int gradNumber, bool conditional) { return 0.0; } double UniaxialMaterial::getStrainSensitivity(int gradNumber) { return 0.0; } double UniaxialMaterial::getInitialTangentSensitivity(int gradNumber) { return 0.0; } double UniaxialMaterial::getRhoSensitivity(int gradNumber) { return 0.0; } double UniaxialMaterial::getDampTangentSensitivity(int gradNumber) { return 0.0; } int UniaxialMaterial::commitSensitivity(double strainSensitivity, int gradNumber, int numGrads) { return -1; } double UniaxialMaterial::getInitialTangent (void) { opserr << "UniaxialMaterial::getInitialTangent() -- this mehtod " << endln << " is not implemented for the selected material. " << endln; return 0.0; } // AddingSensitivity:END ////////////////////////////////////////// Generated on Mon Oct 23 15:05:22 2006 for OpenSees by  1.5.0

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