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YS_Section2D01.cpp

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00001 // @ rkaul@stanford.edu
00002 // @ ggd@stanford.edu
00003 
00004 #include <YS_Section2D01.h>
00005 
00006 YS_Section2D01::YS_Section2D01(void)
00007 :YieldSurfaceSection2d(0, SEC_TAG_YieldSurface2D01, 0, true),
00008  E(0), A(0), I(0)
00009 {
00010 }
00011 
00012 YS_Section2D01::YS_Section2D01
00013 (int tag, double E_in, double A_in, double I_in, YieldSurface_BC *ptrys, bool use_kr)
00014 :YieldSurfaceSection2d(tag, SEC_TAG_YieldSurface2D01, ptrys, use_kr),
00015  E(E_in), A(A_in), I(I_in)
00016 {
00017     if (E <= 0.0)
00018     {
00019       opserr << "YS_Section2D01::YS_Section2D01 -- Input E <= 0.0 ... setting E to 1.0\n";
00020       E = 1.0;
00021     }
00022 
00023     if (A <= 0.0)
00024     {
00025       opserr << "YS_Section2D01::YS_Section2D01 -- Input A <= 0.0 ... setting A to 1.0\n";
00026       A = 1.0;
00027     }
00028 
00029     if (I <= 0.0)
00030     {
00031       opserr << "YS_Section2D01::YS_Section2D01 -- Input I <= 0.0 ... setting I to 1.0",
00032         I = 1.0;
00033     }
00034 
00035 }
00036 
00037 
00038 YS_Section2D01::~YS_Section2D01(void)
00039 {
00040 
00041 }
00042 
00043 void YS_Section2D01::getSectionStiffness(Matrix &Ks)
00044 {
00045         Ks(0,0) = E*A; Ks(0,1) = 0.0;
00046         Ks(1,0) = 0.0; Ks(1,1) = E*I;
00047 }
00048 
00049 const Matrix &
00050 YS_Section2D01::getInitialTangent(void)
00051 {
00052         ks(0,0) = E*A; ks(0,1) = 0.0;
00053         ks(1,0) = 0.0; ks(1,1) = E*I;
00054         
00055         return ks;
00056 }
00057 
00058 SectionForceDeformation* YS_Section2D01::getCopy ()
00059 {
00060     // Make a copy of the hinge
00061     YS_Section2D01 *theCopy =
00062     new YS_Section2D01 (this->getTag(), E, A, I, ys, use_Kr_orig);
00063     theCopy->eCommit = eCommit;
00064     theCopy->sCommit = sCommit;
00065 
00066     return theCopy;
00067 }
00068 
00069 void YS_Section2D01::Print (OPS_Stream &s, int flag)
00070 {
00071     s << "YS_Section2D01, tag: " << this->getTag() << endln;
00072         s << "\tE: " << E << endln;
00073         s << "\tA: " << A << endln;
00074         s << "\tI: " << I << endln;
00075         this->YieldSurfaceSection2d::Print(s, flag);
00076 }

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