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ElasticIsotropicPlaneStress2D.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   **
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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: 1.6 $
00022 // $Date: 2006/08/04 18:18:37 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/nD/ElasticIsotropicPlaneStress2D.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef ElasticIsotropicPlaneStress2D_h
00027 #define ElasticIsotropicPlaneStress2D_h
00028 
00029 // File: ~/material/ElasticIsotropicPlaneStress2D.h
00030 //
00031 // Written: MHS
00032 // Created: Feb 2000
00033 // Revision: A
00034 //
00035 // Description: 
00036 //
00037 // What: "@(#) ElasticIsotropicPlaneStress2D.h, revA"
00038 
00039 #include <ElasticIsotropicMaterial.h>
00040 
00041 #include <Matrix.h>
00042 #include <Vector.h>
00043 #include <ID.h>
00044 
00045 #include <Tensor.h>
00046 
00047 class ElasticIsotropicPlaneStress2D : public ElasticIsotropicMaterial
00048 {
00049   public:
00050     ElasticIsotropicPlaneStress2D (int tag, double E, double nu, double rho);
00051     ElasticIsotropicPlaneStress2D ();
00052     ~ElasticIsotropicPlaneStress2D ();
00053 
00054     const char *getClassType(void) const {return "ElasticIsotropicPlaneStress2D";};
00055 
00056     int setTrialStrain (const Vector &v);
00057     int setTrialStrain (const Vector &v, const Vector &r);
00058     int setTrialStrainIncr (const Vector &v);
00059     int setTrialStrainIncr (const Vector &v, const Vector &r);
00060     const Matrix &getTangent (void);
00061     const Matrix &getInitialTangent (void);
00062 
00063     const Vector &getStress (void);
00064     const Vector &getStrain (void);
00065         
00066     int commitState (void);
00067     int revertToLastCommit (void);
00068     int revertToStart (void);
00069     
00070     NDMaterial *getCopy (void);
00071     const char *getType (void) const;
00072     int getOrder (void) const;
00073     
00074   protected:
00075 
00076   private:
00077     static Vector sigma;        // Stress vector ... class-wide for returns
00078     static Matrix D;            // Elastic constants
00079     Vector epsilon;             // Trial strains
00080 };
00081 
00082 
00083 #endif

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