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Finite element analysis of the compact shear specimen

✍ Scribed by D. Hoyniak; J.C. Conway

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 328 KB
Volume: 12
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(79)90121-8

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✦ Synopsis

AImtract--Mode II stress intensity factors were generated for the compact shear specimen through finite element techniques. Results are compared to those obtained in a boundary collocation analysis with general agreement being shown but with somewhat greater variation in stress intensity factor indicated over the range of crack lengths investigated. Correction factors for three specimen configurations are tabulated and are used to determine the Mode II fracture toughness for 2024-I"4 aluminum specimens tested in a previous investigation. Mode II fracture toughness for this material was found to be approximately 50% higher than the Mode I fracture toughness, and a tendency toward Mode I deformation at crack initiation was evident. Correction factors obtained in this investigation should prove useful in the determination of material fracture toughness and fatigue crack growth thresholds.

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