Improving Estimates of Critical Time-Steps for Discrete Element Simulations

Shane J Burns; Kevin J Hanley

Improving Estimates of Critical Time-Steps for Discrete Element Simulations

School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract / Description of output

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 language	English
Title of host publication	Proceedings of The 7th International Conference on Discrete Element Methods (DEM7)
Publisher	Springer
Pages	169-175
Volume	188
ISBN (Electronic)	0930-8989
Publication status	E-pub ahead of print - 2 Dec 2016

Publication series

Name	Springer Proceedings in Physics
Publisher	Springer
Volume	188
ISSN (Print)	0930-8989

Access to Document

https://link.springer.com/chapter/10.1007/978-981-10-1926-5_19

Improving estimates of critical time-steps for discrete element simulations
Hanley, K.
EPSRC
7/12/15 → 6/05/17
Project: Research

Cite this

Burns, S. J., & Hanley, K. J. (2016). Improving Estimates of Critical Time-Steps for Discrete Element Simulations. In Proceedings of The 7th International Conference on Discrete Element Methods (DEM7) (Vol. 188, pp. 169-175). (Springer Proceedings in Physics; Vol. 188). Springer. Advance online publication. https://link.springer.com/chapter/10.1007/978-981-10-1926-5_19

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title = "Improving Estimates of Critical Time-Steps for Discrete Element Simulations",

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. ",

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AU - Hanley, Kevin J

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N2 - 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.

AB - 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.

M3 - Conference contribution

VL - 188

T3 - Springer Proceedings in Physics

SP - 169

EP - 175

BT - Proceedings of The 7th International Conference on Discrete Element Methods (DEM7)

PB - Springer

ER -

Improving Estimates of Critical Time-Steps for Discrete Element Simulations

Abstract / Description of output

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Improving estimates of critical time-steps for discrete element simulations

Cite this