plastic deformation

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martinmasanes
Posts: 38
Joined: Thu Jun 27, 2013 2:39 pm
Location: universidad de los andes

plastic deformation

Post by martinmasanes » Mon Jun 16, 2014 2:47 pm

Dear all:
I want to know what's the diference between the element rotation obtained with the basicDeformation recorder and the rotation obtained with the plasticDeformation recorder?


Thanks

fmk
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Re: plastic deformation

Post by fmk » Tue Jun 17, 2014 12:36 pm

the 1st is total deformetion, the second is total minus the elastic portion estimated using the current forces and initial flexibility
V = Ve + Vp
Vp = V - Finitial * S (F flexibility matrix in local system at initial state, S current forces in local system(

// Plastic rotation
else if (responseID == 4) {
this->getInitialFlexibility(fe);
vp = crdTransf->getBasicTrialDisp();
vp.addMatrixVector(1.0, fe, Se, -1.0);
static Vector v0(3);
this->getInitialDeformations(v0);
vp.addVector(1.0, v0, -1.0);
return eleInfo.setVector(vp);
}

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