xc
ElasticPPMaterialBase.h
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2 //----------------------------------------------------------------------------
3 // XC program; finite element analysis code
4 // for structural analysis and design.
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6 // Copyright (C) Luis C. Pérez Tato
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9 // developed by the «Pacific earthquake engineering research center».
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28 /* ****************************************************************** **
29 ** OpenSees - Open System for Earthquake Engineering Simulation **
30 ** Pacific Earthquake Engineering Research Center **
31 ** **
32 ** **
33 ** (C) Copyright 1999, The Regents of the University of California **
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42 ** Frank McKenna (fmckenna@ce.berkeley.edu) **
43 ** Gregory L. Fenves (fenves@ce.berkeley.edu) **
44 ** Filip C. Filippou (filippou@ce.berkeley.edu) **
45 ** **
46 ** ****************************************************************** */
47 
48 // $Revision: 1.5 $
49 // $Date: 2003/02/25 23:33:38 $
50 // $Source: /usr/local/cvs/OpenSees/SRC/material/uniaxial/ElasticPPMaterialBase.h,v $
51 
52 #ifndef ElasticPPMaterialBase_h
53 #define ElasticPPMaterialBase_h
54 
55 // File: ~/material/ElasticPPMaterialBase.h
56 //
57 // Written: fmk
58 // Created: 07/98
59 // Revision: A
60 //
61 // Description: This file contains the class definition for
62 // ElasticPPMaterialBase. ElasticPPMaterialBase provides the abstraction
63 // of an elastic perfectly plastic uniaxial material,
64 //
65 // What: "@(#) ElasticPPMaterialBase.h, revA"
66 
67 #include <material/uniaxial/EPPBaseMaterial.h>
68 
69 namespace XC {
70 //
80  {
81  protected:
82  double fyp, fyn;
83  double ep;
84  double commitStress;
85  double EnergyP;
86 
88  inline double yield_function(const double &sigtrial) const
89  {
90  if(sigtrial>=0.0)
91  return (sigtrial - fyp);
92  else
93  return (-sigtrial + fyn);
94  }
95 
96  inline double get_total_strain(void)
97  { return EPPBaseMaterial::get_total_strain()-ep; }
98  int sendData(Communicator &);
99  int recvData(const Communicator &);
100  public:
101  ElasticPPMaterialBase(int tag, int classTag, double E, double eyp);
102  ElasticPPMaterialBase(int tag, int classTag, double E, double eyp, double eyn, double ezero);
103  ElasticPPMaterialBase(int tag, int classTag);
104 
105  virtual void set_fyp(const double &);
106  void set_eyp(const double &);
107  virtual void set_fyn(const double &);
108  void set_eyn(const double &);
109  double get_fyp(void) const;
110  double get_eyp(void) const;
111  double get_fyn(void) const;
112  double get_eyn(void) const;
113  virtual double getEnergy(void)
114  { return EnergyP; }
115 
116  int setTrialStrain(double strain, double strainRate = 0.0);
117 
118  int commitState(void);
119  int revertToLastCommit(void);
120  int revertToStart(void);
121 
122  UniaxialMaterial *getCopy(void) const;
123 
124  int sendSelf(Communicator &);
125  int recvSelf(const Communicator &);
126 
127  void Print(std::ostream &s, int flag =0) const;
128 
129  };
130 } // end of XC namespace
131 
132 
133 #endif
134 
135 
136 
ElasticPPMaterialBase(int tag, int classTag, double E, double eyp)
Constructor.
Definition: ElasticPPMaterialBase.cc:109
int setTrialStrain(double strain, double strainRate=0.0)
Sets trial strain.
Definition: ElasticPPMaterialBase.cc:137
Communication parameters between processes.
Definition: Communicator.h:66
Base class for uniaxial materials.
Definition: UniaxialMaterial.h:93
int recvSelf(const Communicator &)
Receives object through the communicator argument.
Definition: ElasticPPMaterialBase.cc:251
double E
Elastic modulus.
Definition: ElasticBaseMaterial.h:45
int revertToStart(void)
Returns the material to its initial state.
Definition: ElasticPPMaterialBase.cc:205
int sendSelf(Communicator &)
Sends object through the communicator argument.
Definition: ElasticPPMaterialBase.cc:234
double yield_function(const double &sigtrial) const
Computes yield function value.
Definition: ElasticPPMaterialBase.h:88
double commitStress
last committed stress
Definition: ElasticPPMaterialBase.h:84
void set_eyp(const double &)
Sets the positive yield strain value (tension).
Definition: ElasticPPMaterialBase.cc:85
virtual void set_fyn(const double &)
Set the yield stress a compression value.
Definition: ElasticPPMaterialBase.cc:89
void set_eyn(const double &)
Asigna el yield stress a compression value.
Definition: ElasticPPMaterialBase.cc:102
Base class for elastic perfectly plastic materials.
Definition: EPPBaseMaterial.h:38
double EnergyP
Energy stored in the material by SAJalali.
Definition: ElasticPPMaterialBase.h:85
virtual void set_fyp(const double &)
Sets the positive yield stress value (tension).
Definition: ElasticPPMaterialBase.cc:72
int recvData(const Communicator &)
Receives object members through the communicator argument.
Definition: ElasticPPMaterialBase.cc:227
double ep
plastic strain at last commit
Definition: ElasticPPMaterialBase.h:83
int revertToLastCommit(void)
Returns the material state to its last commit.
Definition: ElasticPPMaterialBase.cc:196
double fyn
positive and negative yield stress
Definition: ElasticPPMaterialBase.h:82
int commitState(void)
Commit material state.
Definition: ElasticPPMaterialBase.cc:170
Open source finite element program for structural analysis.
Definition: ContinuaReprComponent.h:35
UniaxialMaterial * getCopy(void) const
Virtual constructor.
Definition: ElasticPPMaterialBase.cc:215
int sendData(Communicator &)
Send object members through the communicator argument.
Definition: ElasticPPMaterialBase.cc:219
void Print(std::ostream &s, int flag=0) const
Print stuff.
Definition: ElasticPPMaterialBase.cc:268
Elastic perfectly plastic material.
Definition: ElasticPPMaterialBase.h:79