scaldam.h

来自「Finite element program for mechanical pr」· C头文件 代码 · 共 52 行

#ifndef SCALDAM_H
#define SCALDAM_H

#include "iotools.h"
#include "alias.h"
#include "strretalg.h"
struct matrix;
struct vector;
struct atsel;

/**
  This class defines scalar isotropic damage material model.
  The different type of norms for the computing parameters of
  the damage function can be used.
*/
class scaldam
{
 public:
  scaldam (void);
  ~scaldam (void);
  void read (XFILE *in);
  void damfuncpar(long ipp, vector &eps, vector &kappa);
  double damfunction(long ipp, vector &kappa);
/*  double strain_ener_f (vector &sigma,vector &eps);
  void dampar (vector &sigma,vector &eps,double &d,double &tauo);*/
  void matstiff (matrix &d,long ipp,long ido);
  void nlstresses (long ipp, long im, long ido);
  void updateval (long ipp,long im,long ido);
  double epsefunction (long ipp);
  void changeparam (atsel &atm,vector &val);


  /// max effective strain at peak
  double indam;
  /// tensile strength
  double st;
  /// determines the softening -> corresponds to crack opening (not strain) when tension stress vanishes
  double uf;
  /// parameter for energy norm
  double c;
  /// parameter for von Mises norm - ratio of compression and tensile strength
  double k;
  /// type of function for evaluation damage funtion parameter
  paramf_type ft;
  /// correction of disipated energy switch
  corr_disip_en cde;
  ///  stress return algorithm
  strretalg sra;
};

#endif