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bond_fene_expand.h
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Sat, Jun 8, 04:19

bond_fene_expand.h
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/* -*- c++ -*- ----------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#ifdef BOND_CLASS
BondStyle(fene/expand,BondFENEExpand)
#else
#ifndef LMP_BOND_FENE_EXPAND_H
#define LMP_BOND_FENE_EXPAND_H
#include <stdio.h>
#include "bond.h"
namespace LAMMPS_NS {
class BondFENEExpand : public Bond {
public:
BondFENEExpand(class LAMMPS *);
virtual ~BondFENEExpand();
virtual void compute(int, int);
void coeff(int, char **);
void init_style();
double equilibrium_distance(int);
void write_restart(FILE *);
void read_restart(FILE *);
void write_data(FILE *);
double single(int, double, int, int, double &);
protected:
double TWO_1_3;
double *k,*r0,*epsilon,*sigma,*shift;
void allocate();
};
}
#endif
#endif
/* ERROR/WARNING messages:
W: FENE bond too long: %ld %d %d %g
A FENE bond has stretched dangerously far. It's interaction strength
will be truncated to attempt to prevent the bond from blowing up.
E: Bad FENE bond
Two atoms in a FENE bond have become so far apart that the bond cannot
be computed.
E: Incorrect args for bond coefficients
Self-explanatory. Check the input script or data file.
W: Use special bonds = 0,1,1 with bond style fene/expand
Most FENE models need this setting for the special_bonds command.
W: FENE bond too long: %ld %g
A FENE bond has stretched dangerously far. It's interaction strength
will be truncated to attempt to prevent the bond from blowing up.
*/

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