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Elastoplastic frictional collisions with Collisional-SPH
Journal
Tribology International
ISSN
0301679X
Date Issued
2022-04-01
Author(s)
Vyas, Dhairya R.
Cummins, Sharen J.
Delaney, Gary W.
Rudman, Murray
Cleary, Paul W.
Khakhar, Devang V.
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.
Subjects