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fdYieldVM.h

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00001 //===============================================================================
00002 //# COPYRIGHT (C): Woody's 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 //# PROJECT:           Object Oriented Finite Element Program
00012 //# PURPOSE:           Finite Deformation Hyper-Elastic classes
00013 //# CLASS:
00014 //#
00015 //# VERSION:           0.6_(1803398874989) (golden section)
00016 //# LANGUAGE:          C++
00017 //# TARGET OS:         all...
00018 //# DESIGN:            Zhao Cheng, Boris Jeremic (jeremic@ucdavis.edu)
00019 //# PROGRAMMER(S):     Zhao Cheng, Boris Jeremic
00020 //#
00021 //#
00022 //# DATE:              July 2004
00023 //# UPDATE HISTORY:
00024 //#
00025 //===============================================================================
00026 
00027 #ifndef fdYieldVM_H
00028 #define fdYieldVM_H
00029 
00030 #include "fdYield.h"
00031 
00032 class fdYieldVM : public fdYield
00033 {
00034   private:
00035     double Y0;
00036   public:
00037     fdYieldVM(double Y0_in);
00038     // virtual ~fdYieldVM() {}; 
00039     
00040     fdYield *newObj();   
00041 
00042     int getNumRank();
00043     double getTolerance();
00044     
00045     double Yd(const stresstensor &sts, const FDEPState &fdepstate ) const;      
00046 
00047     stresstensor dYods(const stresstensor &sts, const FDEPState &fdepstate ) const; 
00048     double dYodq(const stresstensor &sts, const FDEPState &fdepstate ) const;       
00049     stresstensor dYoda(const stresstensor &sts, const FDEPState &fdepstate ) const;
00050     
00051     void print() { opserr << *this; };   
00052 
00053     friend OPS_Stream& operator<< (OPS_Stream& os, const fdYieldVM & fdydVM);
00054 };
00055 
00056 
00057 #endif

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