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DM04_YF.h

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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 #ifndef DM04_YF_H
00034 #define DM04_YF_H
00035 
00036 #include "YieldFunction.h"
00037 #include <math.h>
00038 
00039 class DM04_YF : public YieldFunction
00040 {
00041   public:
00042     DM04_YF(int m_which_in, int index_m_in, 
00043             int alpha_which_in, int index_alpha_in);
00044     ~DM04_YF();
00045       
00046     YieldFunction *newObj();
00047   
00048     double YieldFunctionValue(const stresstensor& Stre, 
00049                               const MaterialParameter &MaterialParameter_in) const;
00050     
00051     const stresstensor& StressDerivative(const stresstensor& Stre, 
00052                                          const MaterialParameter &MaterialParameter_in) const;
00053        
00054     const stresstensor& InTensorDerivative(const stresstensor& Stre, 
00055                                            const MaterialParameter &MaterialParameter_in, 
00056                                            int which) const;
00057     
00058     int getNumInternalScalar() const;
00059     int getNumInternalTensor() const;
00060     int getYieldFunctionRank() const;
00061 
00062   private:
00063     double getm(const MaterialParameter &MaterialParameter_in) const;
00064     const stresstensor& getalpha(const MaterialParameter &MaterialParameter_in) const;
00065     
00066   private:    
00067     int m_which; 
00068     int index_m;
00069     int alpha_which; 
00070     int index_alpha;
00071         
00072     static stresstensor DM04st;
00073 };
00074 
00075 
00076 #endif
00077

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