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Effect of stress field parameters on dynamic crack branching

โœ Scribed by A. Shukla; H. Nigam; H. Zervas

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
766 KB
Volume
36
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

A review of the existing crack branching criteria is made. Effect of stress intensity factor, crack velocity and remote stress acting parallel to the crack on the predictions of various criteria is investigated. A new criterion based on the strain energy method is proposed. This criterion predicts the influence of the stress field coefficients including the stress intensity factor and the remote stress acting parallel to the crack on the crack branching phenomenon. Experiments have been conducted to verify the predictions of the proposed criterion.

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NOMENCLATURE Young's modulus shear modulus elastic constant : 3 -4y plane strain ; 3 -r/l + y plane stress force per unit thickness of plate open end mode I stress intensity factor open end mode II stress intensity factor Poisson's ratio applied uniform tension, 2p/k + 1 distance of concentrated for