Virtual Crack Extension Technique

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Authors
  1. Shahin, K.
  2. Koko, T.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
Abstract
In order to numerically calculate the strain energy release rate (SERR) using finite element models, an implementation of the virtual crack extension technique was developed within a Matlab script. From the nodal data read in from the ascii output files produced by LS-Dyna, the SERR was calculated from contours of elements which were positioned around the crack tip. In order to validate the implementation, a mesh sensitivity study of a center cracked panel was carried out. This study concluded that the SERR implementation was relatively independent of mesh size and shape.

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Report Number
DRDC-ATLANTIC-CR-2008-274 — Contractor Report
Date of publication
01 Dec 2008
Number of Pages
40
DSTKIM No
CA032251
CANDIS No
531312
Format(s):
CD ROM

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