A class representing a coupling between a discrete element method (DEM) simulation and a peridynamic simulation. More...

#include <peridigm_dem_coupler.hpp>

Public Member Functions
	PeriDigmDEMCoupler ()
	Default constructor.

void	Init (Particle *p)
	Initializes the coupler with the given particle.

void	Solve ()
	Solves the coupled DEM and peridynamic simulations.

void	ApplyBoundaryForce (Vec3d const &pos, Vec3d const &force)
	Applies a boundary force to the peridynamic simulation at the given position.

bool	CheckBreakage ()
	Checks if particle breakage has occurred.

VecXT< DEMFragment >	GetFragments ()
	Gets the fragments resulting from the fragment reconstruction routine.

Public Attributes
std::string	base_dir {"tmp/out/"}
	The working directory.

int	sub_dir_index {0}
	The index of the subdirectory.

Particle *	particle {nullptr}
	A pointer to the particle.

PeriDigmSimulator	pd_sim
	The peridynamic simulator.

STLModel	surface_stl
	The STL model of the surface.

int	mesh_res {20}
	The resolution of the mesh.

double	node_size_ave {0.0}
	The average size of the nodes.

VecXT< int >	fixed_nodes
	The indices of the fixed nodes in the peridynamic simulation.

VecXT< int >	boundary_force_nodes
	The indices of the nodes on which boundary forces are applied in the peridynamic simulation.

VecXT< double >	boundary_force_node_vols
	The volumes of the nodes on which boundary forces are applied in the peridynamic simulation.

VecXT< Vec3d >	boundary_force_values
	The values of the boundary forces applied to the nodes in the peridynamic simulation.

VecXT< int >	unbalanced_force_nodes
	The indices of the nodes on which unbalanced forces are applied in the peridynamic simulation.

Vec3d	unbalanced_force_values {0, 0, 0}
	The values of the unbalanced forces applied to the nodes in the peridynamic simulation.

double	contact_force_max {0.0}
	The maximum contact force.

VecXT< double >	contact_force_list
	A list of contact forces.

bool	use_customized_loading_rate {false}
	Whether to use a customized loading rate in the peridynamic simulation.

double	loading_rate {1.0e5}
	The loading rate used in the peridynamic simulation.

int	loading_steps {1000}
	The number of loading steps used in the peridynamic simulation.

double	mech_time {0.0}
	The current mechanical time.

bool	is_broken {false}
	Whether the material is currently broken.

double	damage_fraction_limit {0.05}
	The limit for the fraction of damaged bonds above which the fragment reconstruction routine is invoked.

double	fragment_vol_limit {0.001}
	The limit for the volume of a fragment below which it will be considered a spherical fine rather than reconstructed.

bool	ignore_fines {true}
	Whether to ignore spherical fines during the fragment reconstruction routine.

bool	use_alpha_shape {true}
	Whether to use alpha shapes in the fragment reconstruction routine.

double	fragment_alpha {0.0}
	The value of alpha used in the alpha shape computation for the fragment reconstruction routine.

PeriDigmStrength	strength_params
	The strength parameters of the particles.

PeriDigmMaterial	material_params
	The material parameters of the peridynamic simulation.

Detailed Description

A class representing a coupling between a discrete element method (DEM) simulation and a peridynamic simulation.

The PeriDigmDEMCoupler class represents a coupling between a discrete element method (DEM) simulation and a peridynamic simulation. This allows for the simulation of the deformation and failure of a granular material under various loading conditions.

Constructor & Destructor Documentation

◆ PeriDigmDEMCoupler()

netdem::PeriDigmDEMCoupler::PeriDigmDEMCoupler ( )

Default constructor.

Member Function Documentation

◆ ApplyBoundaryForce()

void netdem::PeriDigmDEMCoupler::ApplyBoundaryForce	(	Vec3d const &	pos,
		Vec3d const &	force )

Applies a boundary force to the peridynamic simulation at the given position.

This method applies a boundary force to the peridynamic simulation at the given position. The force is applied as a force density.

Parameters

pos	The position at which the force is applied.
force	The force to be applied.

◆ CheckBreakage()

bool netdem::PeriDigmDEMCoupler::CheckBreakage ( )

Checks if particle breakage has occurred.

This method checks if particle breakage has occurred by comparing the fraction of damaged bonds to the damage fraction limit.

Returns: True if particle breakage has occurred, false otherwise.

◆ GetFragments()

VecXT< DEMFragment > netdem::PeriDigmDEMCoupler::GetFragments ( )

Gets the fragments resulting from the fragment reconstruction routine.

This method gets the fragments resulting from the fragment reconstruction routine.

Returns: A vector of DEMFragment objects representing the reconstructed fragments.

◆ Init()

void netdem::PeriDigmDEMCoupler::Init ( Particle * p )

Initializes the coupler with the given particle.

This method initializes the coupler with the given particle.

Parameters

p	A pointer to the particle.

◆ Solve()

void netdem::PeriDigmDEMCoupler::Solve ( )

Solves the coupled DEM and peridynamic simulations.

This method solves the coupled DEM and peridynamic simulations.

Member Data Documentation

◆ base_dir

std::string netdem::PeriDigmDEMCoupler::base_dir {"tmp/out/"}

The working directory.

◆ boundary_force_node_vols

VecXT<double> netdem::PeriDigmDEMCoupler::boundary_force_node_vols

The volumes of the nodes on which boundary forces are applied in the peridynamic simulation.

◆ boundary_force_nodes

VecXT<int> netdem::PeriDigmDEMCoupler::boundary_force_nodes

The indices of the nodes on which boundary forces are applied in the peridynamic simulation.

◆ boundary_force_values

VecXT<Vec3d> netdem::PeriDigmDEMCoupler::boundary_force_values

The values of the boundary forces applied to the nodes in the peridynamic simulation.

◆ contact_force_list

VecXT<double> netdem::PeriDigmDEMCoupler::contact_force_list

A list of contact forces.

◆ contact_force_max

double netdem::PeriDigmDEMCoupler::contact_force_max {0.0}

The maximum contact force.

◆ damage_fraction_limit

double netdem::PeriDigmDEMCoupler::damage_fraction_limit {0.05}

The limit for the fraction of damaged bonds above which the fragment reconstruction routine is invoked.

◆ fixed_nodes

VecXT<int> netdem::PeriDigmDEMCoupler::fixed_nodes

The indices of the fixed nodes in the peridynamic simulation.

◆ fragment_alpha

double netdem::PeriDigmDEMCoupler::fragment_alpha {0.0}

The value of alpha used in the alpha shape computation for the fragment reconstruction routine.

◆ fragment_vol_limit

double netdem::PeriDigmDEMCoupler::fragment_vol_limit {0.001}

The limit for the volume of a fragment below which it will be considered a spherical fine rather than reconstructed.

◆ ignore_fines

bool netdem::PeriDigmDEMCoupler::ignore_fines {true}

Whether to ignore spherical fines during the fragment reconstruction routine.

◆ is_broken

bool netdem::PeriDigmDEMCoupler::is_broken {false}

Whether the material is currently broken.

◆ loading_rate

double netdem::PeriDigmDEMCoupler::loading_rate {1.0e5}

The loading rate used in the peridynamic simulation.

◆ loading_steps

int netdem::PeriDigmDEMCoupler::loading_steps {1000}

The number of loading steps used in the peridynamic simulation.

◆ material_params

PeriDigmMaterial netdem::PeriDigmDEMCoupler::material_params

The material parameters of the peridynamic simulation.

◆ mech_time

double netdem::PeriDigmDEMCoupler::mech_time {0.0}

The current mechanical time.

◆ mesh_res

int netdem::PeriDigmDEMCoupler::mesh_res {20}

The resolution of the mesh.

◆ node_size_ave

double netdem::PeriDigmDEMCoupler::node_size_ave {0.0}

The average size of the nodes.

◆ particle

Particle* netdem::PeriDigmDEMCoupler::particle {nullptr}

A pointer to the particle.

◆ pd_sim

PeriDigmSimulator netdem::PeriDigmDEMCoupler::pd_sim

The peridynamic simulator.

◆ strength_params

PeriDigmStrength netdem::PeriDigmDEMCoupler::strength_params

The strength parameters of the particles.

◆ sub_dir_index

int netdem::PeriDigmDEMCoupler::sub_dir_index {0}

The index of the subdirectory.

◆ surface_stl

STLModel netdem::PeriDigmDEMCoupler::surface_stl

The STL model of the surface.

◆ unbalanced_force_nodes

VecXT<int> netdem::PeriDigmDEMCoupler::unbalanced_force_nodes

The indices of the nodes on which unbalanced forces are applied in the peridynamic simulation.

◆ unbalanced_force_values

Vec3d netdem::PeriDigmDEMCoupler::unbalanced_force_values {0, 0, 0}

The values of the unbalanced forces applied to the nodes in the peridynamic simulation.

◆ use_alpha_shape

bool netdem::PeriDigmDEMCoupler::use_alpha_shape {true}

Whether to use alpha shapes in the fragment reconstruction routine.

◆ use_customized_loading_rate

bool netdem::PeriDigmDEMCoupler::use_customized_loading_rate {false}

Whether to use a customized loading rate in the peridynamic simulation.

The documentation for this class was generated from the following files:

/Users/lzhshou/Documents/Research/myProjects/apaam/repo/netdem/src/peridigm/peridigm_dem_coupler.hpp
/Users/lzhshou/Documents/Research/myProjects/apaam/repo/netdem/src/peridigm/peridigm_dem_coupler.cpp

Public Member Functions

Public Attributes