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CloughDamage.h

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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: 1.2 $
00022 // $Date: 2006/08/03 23:44:38 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/uniaxial/snap/CloughDamage.h,v $
00024 //
00025 //
00026 // CloughDamage.h: implementation of the CloughDamage class from Fortran version.
00027 // Originally from SNAP PROGRAM by Prof H.K. Krawinkler
00028 //
00029 // Written: A. Altoontash & Prof. G. Deierlein 12/01
00030 // Revised: 03/02
00031 //
00032 // Purpose: This file contains the implementation for the CloughDamage class.
00033 //
00035 
00036 // CloughDamage.h: interface for the CloughDamage class.
00037 //
00039 
00040 #ifndef CloughDamage_H
00041 #define CloughDamage_H
00042 
00043 #include <UniaxialMaterial.h>
00044 #include <Vector.h>
00045 #include <stdio.h>
00046 
00047 class DamageModel;
00048 
00049 class CloughDamage : public UniaxialMaterial
00050 {
00051 public:
00052         CloughDamage();
00053         CloughDamage(int tag, Vector inputParam, DamageModel *strength, DamageModel *stiffness,DamageModel *accelerated, DamageModel *capping);
00054         virtual ~CloughDamage();
00055 
00056         const char *getClassType(void) const {return "CloughDamage";};
00057         
00058         int setTrialStrain(double d, double strainRate = 0.0);
00059         double getStrain(void);
00060         
00061         double getStress(void);
00062         double getTangent(void);
00063         double getInitialTangent(void);
00064         int commitState(void);
00065         int revertToLastCommit(void);    
00066         int revertToStart(void);  
00067         
00068         //virtual
00069         UniaxialMaterial *getCopy(void);
00070         
00071         int sendSelf(int commitTag, Channel &theChannel);  
00072         int recvSelf(int commitTag, Channel &theChannel,FEM_ObjectBroker &theBroker);
00073         
00074         void Print(OPS_Stream &s, int flag =0);
00075         
00076 protected:
00077         void envelPosCap(double fy, double alphaPos, double alphaCap,
00078                 double cpDsp, double d, double *f, double *ek );
00079         
00080         void envelNegCap(double fy, double alphaNeg, double alphaCap,
00081                 double cpDsp, double d, double *f, double *ek);
00082         
00083         void recordInfo(int cond =0);
00084         
00085         
00086 private:
00087         // Input parameters
00088         double elstk,fyieldPos,fyieldNeg,alpha,Resfac;          //      Properties
00089         double capSlope,capDispPos,capDispNeg;   // Cap
00090 
00091         // Parameters calculated from input data
00092         double dyieldPos,dyieldNeg;
00093         DamageModel *StrDamage;
00094         DamageModel *StfDamage;
00095         DamageModel *AccDamage;
00096         DamageModel *CapDamage;
00097 
00098         double hsTrial[24], hsCommit[24], hsLastCommit[24];
00099         
00100 };
00101 
00102 #endif

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