Surface Energy for Formation of Inclined and Interface Cracks Terminating at a Bimaterial Interface
Publication: Journal of Engineering Mechanics
Volume 143, Issue 9
Abstract
This paper proposes a damage parameter, , for evaluation of the surface energy associated with the formation of multiple cracks terminating at a bimaterial interface. The study considers two crack mechanisms, including an inclined crack terminating at the interface with an arbitrary angle and an interface crack lying along the material interface. Based on the concept of the -integral, the parameter is developed by conducting the integration along a closed contour enclosing all the cracks and with respect to a specific reference coordinate system. The formulation is shown to be path-independent, and therefore good accuracy of can be achieved even when elaborate near-tip local solutions are not ensured.
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Acknowledgments
This work has been partially supported by National Science Council Grant No. NSC103-2221-E-008-030 to National Central University.
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: May 20, 2016
Accepted: Mar 16, 2017
Published online: Jun 15, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 15, 2017
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