Page MenuHomec4science
Files F85798281

contact_rigid.hh
No OneTemporary
Actions

File Metadata

Created
Wed, Oct 2, 04:52

contact_rigid.hh
View Options

/**
* @file contact_rigid.hh
* @author David Kammer <david.kammer@epfl.ch>
* @date Mon Jan 17 14:10:05 2011
*
* @brief Structure that solves contact for for a rigid master surface without
* friction within an explicit time scheme
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_CONTACT_RIGID_HH__
#define __AKANTU_CONTACT_RIGID_HH__
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "contact.hh"
#include "friction_coefficient.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
class ContactRigid : public Contact {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
ContactRigid(const SolidMechanicsModel & model,
const ContactType & type,
const ContactID & id = "contact",
const MemoryID & memory_id = 0);
virtual ~ContactRigid();
/* ------------------------------------------------------------------------ */
/* Active Contact Nodes Class (per Master Surface) */
/* ------------------------------------------------------------------------ */
public:
class ImpactorInformationPerMaster {
public:
ImpactorInformationPerMaster(const Surface master_id, const UInt spatial_dimension);
virtual ~ImpactorInformationPerMaster();
public:
/// master surface id
Surface master_id;
/// impactor surfaces
std::vector<Surface> * impactor_surfaces;
/// list of active impactor nodes
Vector<UInt> * active_impactor_nodes;
// the offset of the associated master surface elemet
//Vector<UInt> * master_element_offset;
/// the element type of the associated master surface element
std::vector<ElementType> * master_element_type;
/// the normal to the master surface element for each active impactor node
Vector<Real> * master_normals;
/// show if node is sticking
Vector<bool> * node_is_sticking;
/// friction force for each
Vector<Real> * friction_forces;
};
typedef std::map<Surface, ImpactorInformationPerMaster *> SurfaceToImpactInfoMap;
typedef std::map<Surface, FrictionCoefficient *> SurfaceToFricCoefMap;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// solve the contact
virtual void solveContact();
/// avoid adhesion by delocking contact nodes that have tensile contact force
virtual void avoidAdhesion();
/// add friction forces
virtual void addFriction();
/// find nodes that stick
virtual void addSticking();
/// add a new master surface
virtual void addMasterSurface(const Surface & master_surface);
/// add an impactor surface to a master surface
virtual void addImpactorSurfaceToMasterSurface(const Surface & impactor_surface,
const Surface & master_surface);
/// remove a master surface
virtual void removeMasterSurface(const Surface & master_surface);
/// remove an impactor surface from master surface
virtual void removeImpactorSurfaceFromMasterSurface(const Surface & impactor_surface,
const Surface & master_surface);
/// set a friction coefficient for a given master surface
virtual void setFrictionCoefficient(FrictionCoefficient * fric_coefficient);
/// remove a friction coefficient for a given master surface
virtual void removeFrictionCoefficient(const Surface master);
/// put contact information into a map which can be used for restart
virtual void getRestartInformation(std::map<char*, VectorBase* > );
/// function to print the contain of the class
//virtual void printself(std::ostream & stream, int indent = 0) const;
private:
/// solve penetration of penetrating nodes
//void solvePenetration(const PenetrationList & penet_list);
/// solve penetration to the closest facet
void solvePenetrationClosestProjection(const Surface master,
const PenetrationList & penet_list);
/// find if the penetrated node is not already in list for this master with this normal
bool isAlreadyActiveImpactor(const Surface master,
const PenetrationList & penet_list,
const UInt impactor_index,
const ElementType facet_type,
const UInt facet_offset);
/// projects the impactor to the projected position
void projectImpactor(const PenetrationList & penet_list,
const UInt impactor_index,
const ElementType facet_type,
const UInt facet_offset);
void lockImpactorNode(const Surface master,
const PenetrationList & penet_list,
const UInt impactor_index,
const ElementType facet_type,
const UInt facet_offset);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/// get the vector full of impactor information objects
AKANTU_GET_MACRO(ImpactorsInformation, impactors_information, const SurfaceToImpactInfoMap &);
/// get spatial dimension
AKANTU_GET_MACRO(SpatialDimension, spatial_dimension, UInt);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
/// spatial dimension of mesh
UInt spatial_dimension;
/// the mesh
const Mesh & mesh;
/// list of impactor nodes info for each master surface
SurfaceToImpactInfoMap impactors_information;
/// list of friction coefficient objects for each master surface
SurfaceToFricCoefMap friction_coefficient;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
//#include "contact_rigid_inline_impl.cc"
/// standard output stream operator
//inline std::ostream & operator <<(std::ostream & stream, const ContactRigid & _this)
//{
// _this.printself(stream);
// return stream;
//}
__END_AKANTU__
#endif /*__AKANTU_CONTACT_RIGID_HH__ */

Event Timeline

c4science · Help