MembranePlateFiberSection.h

// -*-c++-*-
//----------------------------------------------------------------------------
//  XC program; finite element analysis code
//  for structural analysis and design.
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/* ****************************************************************** **
**    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.                                               **
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** Developed by:                                                      **
**   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
**   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
**   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
**                                                                    **
** ****************************************************************** */
                                                                        
// $Revision: 1.6 $
// $Date: 2003/02/14 23:01:34 $
// $Source: /usr/local/cvs/OpenSees/SRC/material/section/MembranePlateFiberSection.h,v $

// Ed "C++" Love
//
// Generic Plate Section with membrane
//

#ifndef MEMBRANEPLATEFIBERSECTION_H
#define MEMBRANEPLATEFIBERSECTION_H

#include <utility/matrix/Vector.h>
#include <utility/matrix/Matrix.h>
#include "MembranePlateFiberSectionBase.h"


namespace XC {

class NDMaterial;

class MembranePlateFiberSection: public MembranePlateFiberSectionBase
  {
  private:
    static constexpr int numFibers= 5;
    static constexpr int order= 8;
    
    //quadrature data
    static const std::string lobattoLabel;
    static const double sgLobatto[numFibers]; //Lobatto integration
    static const double wgLobatto[numFibers];
    static const std::string gaussLabel;
    static const double sgGauss[numFibers]; //Gauss integration.
    static const double wgGauss[numFibers];
    
    static const double root56; //shear correction
    static Vector stressResultant;
    static Matrix tangent;

    
    int integrationType; // 0= Lobatto, 1= Gauss

  protected:
    int sendData(Communicator &);
    int recvData(const Communicator &);
  public: 
    MembranePlateFiberSection(int tag= 0);
    MembranePlateFiberSection(int tag, double thickness, NDMaterial &Afiber, const std::string &integrType= "Lobatto");

    inline void setMaterial(const NDMaterial &ndmat)
      { MembranePlateFiberSectionBase::setMaterial(ndmat); }
    void setIntegrationType(const std::string &);
    const std::string &getIntegrationType(void) const;
    
    std::vector<double> getFiberZs(void) const;
    std::vector<double> getFiberWeights(void) const;
    std::vector<std::pair<double, double> > getFiberZsAndWeights(void) const;

    SectionForceDeformation *getCopy(void) const;
    double getRho(void) const;
    void setRho(const double &);
    double getArealRho(void) const;
    void setArealRho(const double &);
    
    int setInitialSectionDeformation(const Vector &strain_from_element);
    void zeroInitialSectionDeformation(void);
    int setTrialSectionDeformation(const Vector &strain_from_element);
    const Vector &getStressResultant(void) const; //send back the stress 
    const Matrix &getSectionTangent(void) const; //send back the tangent 
    const Matrix &getInitialTangent(void) const //send back the initial tangent 
      {return this->getSectionTangent();}

    //print out data
    void Print( std::ostream &s, int flag ) const;

    int sendSelf(Communicator &);
    int recvSelf(const Communicator &);
    
    Response *setResponse(const std::vector<std::string> &, Information &);

    // parameters
    int setParameter(const std::vector<std::string> &, Parameter &);
  }; //end of MembranePlateFiberSection declarations

} // end of XC namespace

#endif