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Particle-based solid for nonsmooth multidomain dynamics
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics. (Interaktiv multifysik)ORCID iD: 0000-0002-0787-4988
2018 (English)In: Computational Particle Mechanics, ISSN 2196-4378, Vol. 5, no 2, p. 125-139Article in journal (Refereed) Published
Abstract [en]

A method for simulation of elastoplastic solids in multibody systems with nonsmooth and multidomain dynamics is developed. The solid is discretised into pseudo-particles using the meshfree moving least squares method for computing the strain tensor. The particle’s strain and stress tensor variables are mapped to a compliant deformation constraint. The discretised solid model thus fit a unified framework for nonsmooth multidomain dynamics simulations including rigid multibodies with complex kinematic constraints such as articulation joints, unilateral contacts with dry friction, drivelines, and hydraulics. The nonsmooth formulation allows for impact impulses to propagate instantly between the rigid multibody and the solid. Plasticity is introduced through an associative perfectly plastic modified Drucker–Prager model. The elastic and plastic dynamics are verified for simple test systems, and the capability of simulating tracked terrain vehicles driving on a deformable terrain is demonstrated.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 5, no 2, p. 125-139
Keywords [en]
Multidomain, Nonsmooth dynamics, Meshfree, Elastoplastic, Deformable terrain, Multibody dynamics
National Category
Other Physics Topics
Research subject
Physics; Computer and Information Science; Numerical Analysis
Identifiers
URN: urn:nbn:se:umu:diva-132956DOI: 10.1007/s40571-017-0158-3ISI: 000428588300001Scopus ID: 2-s2.0-85044176002OAI: oai:DiVA.org:umu-132956DiVA, id: diva2:1084633
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UMIT
Funder
The Kempe Foundations, JCK-1109Available from: 2017-03-26 Created: 2017-03-26 Last updated: 2018-08-06Bibliographically approved

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CiteExportLink to record
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