C++ (Cpp) StructuralElement::computeVolumeAround 예제들

예제 #1

파일: graddpelement.C 프로젝트: framby/OOFEM_Johannes

void
GradDpElement :: computeStiffnessMatrix_kk(FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep)
{
    StructuralElement *elem = this->giveStructuralElement();
    double dV;
    FloatMatrix lStiff;
    FloatArray Nk;
    FloatMatrix Bk, LBk;
    StructuralCrossSection *cs = elem->giveStructuralCrossSection();

    answer.clear();

    for ( auto &gp: *elem->giveIntegrationRule(0) ) {

        GradDpMaterialExtensionInterface *dpmat = dynamic_cast< GradDpMaterialExtensionInterface * >(
            cs->giveMaterialInterface(GradDpMaterialExtensionInterfaceType, gp) );
        if ( !dpmat ) {
            OOFEM_ERROR("Material doesn't implement the required DpGrad interface!");
        }

        this->computeNkappaMatrixAt(gp, Nk);
        this->computeBkappaMatrixAt(gp, Bk);
        dV = elem->computeVolumeAround(gp);

        dpmat->givePDGradMatrix_kk(lStiff, rMode, gp, tStep);
        answer.plusProductUnsym(Nk, Nk, dV);
        if ( dpmat->giveAveragingType() == 0 || dpmat->giveAveragingType() == 1 ) {
            double l = lStiff.at(1, 1);
            answer.plusProductUnsym(Bk, Bk, l * l * dV);
        } else if ( dpmat->giveAveragingType() == 2 ) {
            LBk.beProductOf(lStiff, Bk);
            answer.plusProductUnsym(Bk, LBk, dV);
        }
    }
}