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A simple average nodal pressure tetrahedral element for incompressible and nearly incompressible dynamic explicit applications

✍ Scribed by Bonet, J. ;Burton, A. J.


Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
406 KB
Volume
14
Category
Article
ISSN
1069-8299

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✦ Synopsis


This paper presents a simple linear tetrahedron element that can be used in explicit dynamics applications involving nearly incompressible materials or incompressible materials modelled using a penalty formulation. The element prevents volumetric locking by de®ning nodal volumes and evaluating average nodal pressures in terms of these volumes. Two well-known examples relating to the impact of elasto±plastic bars are used to demonstrate the ability of the element to model large isochoric strains without locking.


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