/usr/include/liggghts/contact_interface.h is in libliggghts-dev 3.3.1+repack1-1ubuntu3.
This file is owned by root:root, with mode 0o644.
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This is the
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╚══════╝╚═╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚══════╝®
DEM simulation engine, released by
DCS Computing Gmbh, Linz, Austria
http://www.dcs-computing.com, office@dcs-computing.com
LIGGGHTS® is part of CFDEM®project:
http://www.liggghts.com | http://www.cfdem.com
Core developer and main author:
Christoph Kloss, christoph.kloss@dcs-computing.com
LIGGGHTS® is open-source, distributed under the terms of the GNU Public
License, version 2 or later. It is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You should have
received a copy of the GNU General Public License along with LIGGGHTS®.
If not, see http://www.gnu.org/licenses . See also top-level README
and LICENSE files.
LIGGGHTS® and CFDEM® are registered trade marks of DCS Computing GmbH,
the producer of the LIGGGHTS® software and the CFDEM®coupling software
See http://www.cfdem.com/terms-trademark-policy for details.
-------------------------------------------------------------------------
Contributing author and copyright for this file:
Christoph Kloss (DCS Computing GmbH, Linz)
Christoph Kloss (JKU Linz)
Richard Berger (JKU Linz)
Alexander Podlozhnyuk (DCS Computing GmbH, Linz)
Copyright 2012- DCS Computing GmbH, Linz
Copyright 2009-2012 JKU Linz
------------------------------------------------------------------------- */
#ifndef CONTACT_INTERFACE_H_
#define CONTACT_INTERFACE_H_
#include <string>
#include "superquadric_flag.h"
namespace LIGGGHTS {
namespace ContactModels {
// data available in noCollision() and collision()
struct SurfacesCloseData {
double radi;
double radj;
double radsum;
double rsq;
double delta[3];
double area_ratio;
int *contact_flags;
double *contact_history;
int i;
int j;
bool is_wall;
bool has_force_update;
#ifdef SUPERQUADRIC_ACTIVE_FLAG
double *quat_i; //quaternion of i-th particle
double *quat_j; //quaternion of j-th particle
double *shape_i; //shape parameters of i-th particle (a,b,c)
double *shape_j; //shape parameters of j-th particle (a,b,c)
double *roundness_i; //roundness parameters of i-th particle (eps1, eps2)
double *roundness_j; //roundness parameters of j-th particle (eps1, eps2)
double contact_point[3];
double *pos_i;
double *pos_j;
double *inertia_i;
double *inertia_j;
bool is_non_spherical;
double koefi;
double koefj;
SurfacesCloseData() : area_ratio(1.0),
quat_i(NULL),
quat_j(NULL),
shape_i(NULL),
shape_j(NULL),
roundness_i(NULL),
roundness_j(NULL),
pos_i(NULL),
pos_j(NULL),
inertia_i(NULL),
inertia_j(NULL),
is_non_spherical(false),
koefi(0.0),
koefj(0.0) {}
#else
SurfacesCloseData() : area_ratio(1.0) {}
#endif
};
// data available in collision() only
struct SurfacesIntersectData : SurfacesCloseData {
double r;
double rinv;
double en[3];
double * v_i;
double * v_j;
double * omega_i;
double * omega_j;
double kt;
double kn;
double gammat;
double gamman;
double Fn;
double Ft;
double vn;
double deltan;
double cri;
double crj;
double wr1;
double wr2;
double wr3;
double vtr1;
double vtr2;
double vtr3;
double mi;
double mj;
double meff;
mutable double P_diss;
int computeflag;
int shearupdate;
int itype;
int jtype;
SurfacesIntersectData() : Fn(0.0), Ft(0.0) {}
};
struct ForceData {
double delta_F[3]; // total force acting on particle
double delta_torque[3]; // torque acting on a particle
ForceData()
{
reset();
}
inline void reset() {
delta_F[0] = 0.0;
delta_F[1] = 0.0;
delta_F[2] = 0.0;
delta_torque[0] = 0.0;
delta_torque[1] = 0.0;
delta_torque[2] = 0.0;
}
};
}
class IContactHistorySetup {
public:
virtual int add_history_value(std::string name, std::string newtonflag) = 0;
};
}
#endif /* CONTACT_INTERFACE_H_ */
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