Elastoplastic frictional collisions with Collisional-SPH

Dhairya R. Vyas; Sharen J. Cummins; Gary W. Delaney; Murray Rudman; Paul W. Cleary; Devang V. Khakhar

doi:10.1016/j.triboint.2022.107438

Elastoplastic frictional collisions with Collisional-SPH

Dhairya R. Vyas, Sharen J. Cummins, Gary W. Delaney, Murray Rudman, Paul W. Cleary, Devang V. Khakhar

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › Research › peer-review

9 Citations (Scopus)

Abstract

Elastoplastic frictional collisions are encountered in a wide range of applications. For modelling these, inclusion of both the elastoplastic material response and history-dependent collisional forces is essential. The Collisional-SPH method, originally developed for elastic collisions, incorporates frictional collision forces into SPH and accounts for their history-dependence. In this paper, CSPH is extended to model elastoplastic collisions by incorporating an elastoplastic material model. A thorough validation of this elastoplastic CSPH method is presented. CSPH is then used to analyse the influence of deformation on history-dependent collision forces. It is found that the elastoplastic deformation and the resulting shape change of the substrate alter the contact-zone mechanics by influencing the local tangential force distribution. These effects become more pronounced with increasing deformation.

Original language	English
Article number	107438
Number of pages	15
Journal	Tribology International
Volume	168
DOIs	https://doi.org/10.1016/j.triboint.2022.107438
Publication status	Published - Apr 2022

Keywords

Collisions
Contact models
Friction
SPH

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10.1016/j.triboint.2022.107438

Cite this

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title = "Elastoplastic frictional collisions with Collisional-SPH",

abstract = "Elastoplastic frictional collisions are encountered in a wide range of applications. For modelling these, inclusion of both the elastoplastic material response and history-dependent collisional forces is essential. The Collisional-SPH method, originally developed for elastic collisions, incorporates frictional collision forces into SPH and accounts for their history-dependence. In this paper, CSPH is extended to model elastoplastic collisions by incorporating an elastoplastic material model. A thorough validation of this elastoplastic CSPH method is presented. CSPH is then used to analyse the influence of deformation on history-dependent collision forces. It is found that the elastoplastic deformation and the resulting shape change of the substrate alter the contact-zone mechanics by influencing the local tangential force distribution. These effects become more pronounced with increasing deformation.",

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AU - Vyas, Dhairya R.

AU - Cummins, Sharen J.

AU - Delaney, Gary W.

AU - Rudman, Murray

AU - Cleary, Paul W.

AU - Khakhar, Devang V.

PY - 2022/4

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AB - Elastoplastic frictional collisions are encountered in a wide range of applications. For modelling these, inclusion of both the elastoplastic material response and history-dependent collisional forces is essential. The Collisional-SPH method, originally developed for elastic collisions, incorporates frictional collision forces into SPH and accounts for their history-dependence. In this paper, CSPH is extended to model elastoplastic collisions by incorporating an elastoplastic material model. A thorough validation of this elastoplastic CSPH method is presented. CSPH is then used to analyse the influence of deformation on history-dependent collision forces. It is found that the elastoplastic deformation and the resulting shape change of the substrate alter the contact-zone mechanics by influencing the local tangential force distribution. These effects become more pronounced with increasing deformation.

KW - Collisions

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KW - Friction

KW - SPH

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Elastoplastic frictional collisions with Collisional-SPH

Abstract

Keywords

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