Evaluation of a finite element based crack-closure method for calculating static and dynamic strain energy release rates

✍ Scribed by C.J. Jih; C.T. Sun

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 842 KB
• Volume: 37
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(90)90043-g

✦ Synopsis

A

finite element based crack-closure integral for determining strain energy release rates for two-dimensional elastostatic and elastodynamic crack problems in finite bodies is evaluated. Both the J-integral and crack-closure integral are used to obtain strain energy release rates from the finite solution. Comparison with existing solutions shows that both methods yield very good results. However, the crack-closure integral can directly yield strain energy release rates and stress intensity factors for separate fracture modes in mix~-rn~e problems, and is very convenient to use in propagation crack problems.

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