ParticLS: Object-oriented software for discrete element methods and peridynamics

ParticLS ( Partic le L evel S ets) is a software library that implements the discrete element method (DEM) and meshfree methods. ParticLS tracks the interaction between individual particles whose geometries are defined by level sets capable of capturing complex shapes. These particles either represe...

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Bibliographic Details
Published in:Computational particle mechanics 2022-02, Vol.9 (1), p.1-13
Main Authors: Davis, Andrew D., West, Brendan A., Frisch, Nathanael J., O’Connor, Devin T., Parno, Matthew D.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Computational Science and Engineering
Conservation equations
Constitutive relationships
Deformation
Differential equations
Discrete element method
Engineering
Glaciers
Granular materials
Granular media
Libraries
Mathematical models
Meshless methods
Particle interactions
Rigid-body dynamics
Sea ice
Simulation
Software
Tectonics
Theoretical and Applied Mechanics
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Description
Summary:ParticLS ( Partic le L evel S ets) is a software library that implements the discrete element method (DEM) and meshfree methods. ParticLS tracks the interaction between individual particles whose geometries are defined by level sets capable of capturing complex shapes. These particles either represent rigid bodies or material points within a continuum. Particle-particle interactions using various contact laws numerically approximate solutions to energy and mass conservation equations, simulating rigid body dynamics or deformation/fracture. By leveraging multiple contact laws, ParticLS can simulate interacting bodies that deform, fracture, and are composed of many particles. In the continuum setting, we numerically solve the peridynamic equations—integro-differential equations capable of modeling objects with discontinuous displacement fields and complex fracture dynamics. We show that the discretized peridynamic equations can be solved using the same software infrastructure that implements the DEM. Therefore, we design a unique software library where users can easily add particles with arbitrary geometries and new contact laws that model either rigid-body interaction or peridynamic constitutive relationships. We demonstrate ParticLS’ versatility on test problems meant to showcase features applicable to a broad selection of fields such as tectonics, granular media, multiscale simulations, glacier calving, and sea ice.
ISSN:2196-4378
2196-4386
DOI:10.1007/s40571-021-00392-3