An enriched dual Boundary Element Method for fracture mechanics

Simpson, Robert Napier and Trevelyan, Jon 2010. An enriched dual Boundary Element Method for fracture mechanics. IOP Conference Series: Materials Science and Engineering 10 , 012047. 10.1088/1757-899X/10/1/012047

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Abstract

The direct collocation Boundary Element Method (BEM) has been enriched in the Partition of Unity sense by a set of functions known to describe the displacement field in the immediate vicinity of a crack tip. The Dual BEM approach is adopted to preclude the need for substructuring. The enrichment introduces a small number of additional degrees of freedom, and this therefore requires a corresponding number of auxiliary integral equations. The paper describes the enrichment strategies that may be employed and the results demonstrate that the enrichment provides for approximately one order of magnitude improvement in accuracy in comparison with the conventional, unenriched Dual BEM.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TJ Mechanical engineering and machinery
Publisher:	IOP Publishing
ISSN:	1757-899X
Last Modified:	19 Mar 2016 23:09
URI:	https://orca.cardiff.ac.uk/id/eprint/40904

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