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Finite element calculation of stress intensity factors for interface notches

✍ Scribed by S.H. Ju

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
921 KB
Volume
199
Category
Article
ISSN
0045-7825

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✦ Synopsis

Finite element method H-integral

Least-squares method Notch Stress intensity factor A least-squares method was developed to find the stress intensity factors (SIFs) of a notch formed from several elastic anisotropic materials. First, the complex displacement and stress functions of the interface notch are deduced into a simple matrix form, and then stress fields from the finite element analysis are substituted into the least-squares equation generated from the stress functions to evaluate the notch SIFs. Comparisons with theoretical and H-integral solutions indicate that the SIFs evaluated from the least-squares method are accurate if each dimension (two-or three-dimension) contains more than three stress terms.

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