On the method of virtual crack extensions
- 1 January 1975
- journal article
- research article
- Published by Wiley in International Journal for Numerical Methods in Engineering
- Vol. 9 (1) , 187-207
- https://doi.org/10.1002/nme.1620090114
Abstract
The measurement of energy release rates using virtual crack extensions has been made using finite element techniques. An economic and accurate technique for calculating energy changes due to any number of virtual tip changes is presented. Mixed‐mode situations can be dealt with by observing the direction of maximum energy release rate. Examples are given including various cracks in a plate in tension, a curving crack in a general two‐dimensional shape, and a three‐dimensional crack in a plate.Keywords
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