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00001 /* ****************************************************************** **
00002 **    OpenSees - Open System for Earthquake Engineering Simulation    **
00003 **          Pacific Earthquake Engineering Research Center            **
00004 **                                                                    **
00005 **                                                                    **
00006 ** (C) Copyright 1999, The Regents of the University of California    **
00007 ** All Rights Reserved.                                               **
00008 **                                                                    **
00009 ** Commercial use of this program without express permission of the   **
00010 ** University of California, Berkeley, is strictly prohibited.  See   **
00011 ** file 'COPYRIGHT'  in main directory for information on usage and   **
00012 ** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
00013 **                                                                    **
00014 ** Developed by:                                                      **
00015 **   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
00016 **   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
00017 **   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
00018 **                                                                    **
00019 ** ****************************************************************** */
00020                                                                         
00021 // $Revision: 1.1.1.1 $
00022 // $Date: 2000/09/15 08:23:22 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/uniaxial/ParallelMaterial.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef ParallelMaterial_h
00027 #define ParallelMaterial_h
00028 
00029 // File: ~/material/ParallelMaterial.h
00030 //
00031 // Written: fmk 
00032 // Created: 07/98
00033 // Revision: A
00034 //
00035 // Description: This file contains the class definition for 
00036 // ParallelMaterial. ParallelMaterial is an aggregation
00037 // of UniaxialMaterial objects all considered acting in parallel.
00038 //
00039 // What: "@(#) ParallelMaterial.h, revA"
00040 
00041 #include <UniaxialMaterial.h>
00042 
00051 class ParallelMaterial : public UniaxialMaterial
00052 {
00053   public:
00055     ParallelMaterial(int tag, 
00056 
00057      int numMaterial, 
00058      UniaxialMaterial **theMaterials,
00059                           double min = NEG_INF_STRAIN,
00060                           double max = POS_INF_STRAIN); 
00062     ParallelMaterial();
00064     ~ParallelMaterial();
00065 
00067     int setTrialStrain(double strain, double strainRate = 0.0); 
00069     double getStrain(void);          
00071  double getStrainRate(void);
00073     double getStress(void);
00075     double getTangent(void);
00077  double getDampTangent(void);
00079     double getSecant (void);
00080 
00082     int commitState(void);
00084     int revertToLastCommit(void);    
00086     int revertToStart(void);        
00087 
00089     UniaxialMaterial *getCopy(void);
00090     
00092     int sendSelf(int commitTag, Channel &theChannel);  
00094     int recvSelf(int commitTag, Channel &theChannel, 
00095    FEM_ObjectBroker &theBroker);    
00096     
00098     void Print(ostream &s, int flag =0);
00099     
00100   protected:
00101     
00102   private:
00104     double trialStrain;
00106  double trialStrainRate;
00108     int numMaterials;   
00109     int otherDbTag;  
00110     UniaxialMaterial **theModels; 
00111     double epsmin;
00113     double epsmax;
00115     int Cfailed;
00117     int Tfailed;
00118 };
00119 
00120 
00121 #endif
00122