Improving Estimates of Critical Time-Steps for Discrete Element Simulations

Shane J Burns, Kevin J Hanley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Discrete element modelling (DEM) is a powerful software tool for simulating the interactions of granular materials. An explicit, conditionally-stable time-stepping algorithm is typically used for the discrete element method which requires a time-step, either user-specified or computed internally within the code. It is well known that too small a time-step can slow down the simulations whereas too large a time-step can lead to numerical instability . In this work we use a model example to illustrate an alternative, more exact framework for calculating the critical stable time-step for an undamped collision. This framework can be readily extended to more complex configurations.
Original languageEnglish
Title of host publicationProceedings of The 7th International Conference on Discrete Element Methods (DEM7)
PublisherSpringer
Pages169-175
Volume188
ISBN (Electronic)0930-8989
Publication statusE-pub ahead of print - 2 Dec 2016

Publication series

NameSpringer Proceedings in Physics
PublisherSpringer
Volume188
ISSN (Print)0930-8989

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