DistributedDisplacementControl.h

// -*-c++-*-
//----------------------------------------------------------------------------
//  XC program; finite element analysis code
//  for structural analysis and design.
//
//  Copyright (C)  Luis C. Pérez Tato
//
//  This program derives from OpenSees <http://opensees.berkeley.edu>
//  developed by the  «Pacific earthquake engineering research center».
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//  Except for the restrictions that may arise from the copyright
//  of the original program (see copyright_opensees.txt)
//  XC is free software: you can redistribute it and/or modify
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//  (at your option) any later version.
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//  WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details. 
//
//
// You should have received a copy of the GNU General Public License 
// along with this program.
// If not, see <http://www.gnu.org/licenses/>.
//----------------------------------------------------------------------------
/* ****************************************************************** **
**    OpenSees - Open System for Earthquake Engineering Simulation    **
**          Pacific Earthquake Engineering Research Center            **
**                                                                    **
**                                                                    **
** (C) Copyright 1999, The Regents of the University of California    **
** All Rights Reserved.                                               **
**                                                                    **
** Commercial use of this program without express permission of the   **
** University of California, Berkeley, is strictly prohibited.  See   **
** file 'COPYRIGHT'  in main directory for information on usage and   **
** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
**                                                                    **
** Developed by:                                                      **
**   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
**   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
**   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
**                                                                    **
** ****************************************************************** */
                                                                        
// $Revision: 1.1 $
// $Date: 2005/11/29 21:59:49 $
// $Source: /usr/local/cvs/OpenSees/SRC/analysis/integrator/DistributedDisplacementControl.h,v $

// Written: fmk 
// Created: 07/98
// Revision: A
//
// Description: This file contains the class definition for DistributedDisplacementControl.
// DistributedDisplacementControl is an algorithmic class for performing a static analysis
// using the arc length scheme, that is within a load step the following
// constraint is enforced: 
//  i=1        delta U^T delta U + alpha^2 delta lambda^2 = delta s^2
//  i>1        dU^T delta U + alpha^2 dLambda delta lambda = 0
// where dU is change in nodal displacements for step, dLambda is
// change in applied load and DistributedDisplacementControl is a control parameter.
//
// What: "@(#) DistributedDisplacementControl.h, revA"

#ifndef DistributedDisplacementControl_h
#define DistributedDisplacementControl_h

#include "solution/analysis/integrator/static/DisplacementControl.h"
#include "utility/actor/actor/DistributedObj.h"

namespace XC {
class LinearSOE;
class AnalysisModel;
class Domain;

//
class DistributedDisplacementControl: public DisplacementControl, public DistributedObj
  {
  private:
    bool allHaveDofID;
    
    int sendData(Communicator &);
    int recvData(const Communicator &);

    friend class SolutionStrategy;
    DistributedDisplacementControl(SolutionStrategy *);
    DistributedDisplacementControl(SolutionStrategy *,int node, int dof, double increment, int numIncrStep, double minIncrement, double maxIncrement);
    Integrator *getCopy(void) const;
  public:

    int newStep(void);    
    int update(const Vector &deltaU);
    int domainChanged(void);
    
    int sendSelf(Communicator &);
    int recvSelf(const Communicator &);
    void Print(std::ostream &s, int flag =0) const;    
  };
inline Integrator *DistributedDisplacementControl::getCopy(void) const
  { return new DistributedDisplacementControl(*this); }
} // end of XC namespace

#endif