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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 08:23:16 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/analysis/dof_grp/LagrangeDOF_Group.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef LagrangeDOF_Group_h
00027 #define LagrangeDOF_Group_h
00028 
00029 // File: ~/analysis/dof_grp/LagrangeDOF_Group.h
00030 // 
00031 // Written: fmk 
00032 // Created: 02/99
00033 // Revision: A
00034 //
00035 // Description: This file contains the class definition for LagrangeDOF_Group.
00036 // A LagrangeDOF_Group object is instantiated by a LagrangeConstraintHandler for 
00037 // every constrained node in the domain. 
00038 //
00039 // What: "@(#) LagrangeDOF_Group.h, revA"
00040 
00041 #include <DOF_Group.h>
00042 #include <SP_Constraint.h>
00043 #include <MP_Constraint.h>
00044 
00053 class LagrangeDOF_Group: public DOF_Group
00054 {
00055   public:
00057     LagrangeDOF_Group(int tag, SP_Constraint &spPtr);    
00058 
00060     LagrangeDOF_Group(int tag, MP_Constraint &mpPtr);        
00062     virtual ~LagrangeDOF_Group();    
00063 
00065     virtual const Matrix &getTangent(Integrator *theIntegrator);
00066 
00068     virtual const Vector &getUnbalance(Integrator *theIntegrator);
00069 
00071     virtual const Vector &getCommittedDisp(void);
00073     virtual const Vector &getCommittedVel(void);
00075     virtual const Vector &getCommittedAccel(void);
00076     
00078     virtual void setNodeDisp(const Vector &u);
00080     virtual void setNodeVel(const Vector &udot);
00082     virtual void setNodeAccel(const Vector &udotdot);
00083 
00085     virtual void incrNodeDisp(const Vector &u);
00087     virtual void incrNodeVel(const Vector &udot);
00089     virtual void incrNodeAccel(const Vector &udotdot);
00090 
00092     virtual void  zeroTangent(void);
00094     virtual void  addMtoTang(double fact = 1.0);    
00096     virtual void  zeroUnbalance(void);
00098     virtual void  addPtoUnbalance(double fact = 1.0);
00100     virtual void  addPIncInertiaToUnbalance(double fact = 1.0);    
00102     virtual void  addM_Force(const Vector &Udotdot, double fact = 1.0);        
00103     
00104   protected:
00105     
00106   private:
00107 
00108 };
00109 
00110 #endif
00111