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LagrangeConstraintHandler.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: 2005/11/28 21:37:12 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/analysis/handler/LagrangeConstraintHandler.h,v $
00024                                                                         
00025                                                                         
00026 // Written: fmk 
00027 // Created: May 1998.
00028 // Revision: A
00029 //
00030 // Description: This file contains the class definition for 
00031 // LagrangeConstraintHandler. LagrangeConstraintHandler is a 
00032 // constraint handler for handling constraints using the Lagrange method.
00033 // for each element and degree-of-freedom at a node it constructs regular
00034 // FE_Element and DOF_Groups; for each SP_Constraint and MP_Constraint
00035 // LagrangeSP_FE and LagrangeMP_FE elements are created.
00036 //
00037 // What: "@(#) LagrangeConstraintHandler.h, revA"
00038 
00039 #ifndef LagrangeConstraintHandler_h
00040 #define LagrangeConstraintHandler_h
00041 
00042 #include <ConstraintHandler.h>
00043 
00044 class FE_Element;
00045 class DOF_Group;
00046 
00047 class LagrangeConstraintHandler : public ConstraintHandler
00048 {
00049   public:
00050     LagrangeConstraintHandler(double alphaSP, double alphaMP);
00051     ~LagrangeConstraintHandler();
00052 
00053     int handle(const ID *nodesNumberedLast =0);
00054     void clearAll(void);    
00055 
00056     virtual int sendSelf(int commitTag, Channel &theChannel);
00057     virtual int recvSelf(int commitTag, Channel &theChannel, 
00058                          FEM_ObjectBroker &theBroker);
00059     
00060   protected:
00061     
00062   private:
00063     double alphaSP;
00064     double alphaMP;
00065 };
00066 
00067 #endif
00068 
00069 
00070 
00071

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