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Linear_Eij.cpp

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00001 
00002 //   COPYLEFT (C): Woody's viral GPL-like license (by BJ):
00003 //                 ``This    source  code is Copyrighted in
00004 //                 U.S.,  for  an  indefinite  period,  and anybody
00005 //                 caught  using it without our permission, will be
00006 //                 mighty good friends of ourn, cause we don't give
00007 //                 a  darn.  Hack it. Compile it. Debug it. Run it.
00008 //                 Yodel  it.  Enjoy it. We wrote it, that's all we
00009 //                 wanted to do.''
00010 //
00011 //
00012 // COPYRIGHT (C):     :-))
00013 // PROJECT:           Object Oriented Finite Element Program
00014 // FILE:              
00015 // CLASS:             
00016 // MEMBER FUNCTIONS:
00017 //
00018 // MEMBER VARIABLES
00019 //
00020 // PURPOSE:           
00021 //
00022 // RETURN:
00023 // VERSION:
00024 // LANGUAGE:          C++
00025 // TARGET OS:         
00026 // DESIGNER:          Zhao Cheng, Boris Jeremic
00027 // PROGRAMMER:        Zhao Cheng, 
00028 // DATE:              Fall 2005
00029 // UPDATE HISTORY:    
00030 //
00032 //
00033 
00034 #ifndef Linear_Eij_CPP
00035 #define Linear_Eij_CPP
00036 
00037 #include "Linear_Eij.h"
00038 
00039 Linear_Eij::Linear_Eij(int LinearFactor_index_in)
00040 : LinearFactor_index(LinearFactor_index_in)
00041 {
00042 
00043 }
00044 
00045 TensorEvolution* Linear_Eij::newObj()
00046 {
00047    TensorEvolution* nObj = new Linear_Eij(this->LinearFactor_index);
00048 
00049    return nObj;
00050 }
00051 
00052 const straintensor& Linear_Eij::Hij(const straintensor& plastic_flow, const stresstensor& Stre, 
00053                             const straintensor& Stra, const MaterialParameter& material_parameter)
00054 {
00055     TensorEvolution::TensorEvolutionHij = plastic_flow * getLinearFactor(material_parameter); 
00056     return TensorEvolution::TensorEvolutionHij;
00057 }
00058 
00059 double Linear_Eij::getLinearFactor(const MaterialParameter& material_parameter) const
00060 {
00061     if ( LinearFactor_index <= material_parameter.getNum_Material_Parameter() && LinearFactor_index > 0)
00062         return material_parameter.getMaterial_Parameter(LinearFactor_index -1);
00063     else {
00064         opserr << "Linear_Eij: Invalid Input. " << endln;
00065         exit (1);
00066     }  
00067 }
00068 
00069 #endif
00070

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