Finite boundary effects in problem of a crack perpendicular to and terminating at a bimaterial interface

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Full text:
Author(s): S.H. Chen, Tzuchiang Wang, Sharon Kao-Walter
Title: Finite boundary effects in problem of a crack perpendicular to and terminating at a bimaterial interface
Journal: Acta Mechanica Sinica
Year: 2005
Volume: 21
Issue: 1
Pagination: 56-64
ISSN: 0567-7718 (p)1614-3116(online)
Publisher: Springer Berlin
City: Heidelberg
ISI number: 000228656600007
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för teknik – avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Authors e-mail: chenshaohua72@hotmail.com, sharon.kao-walter@bth.se
Language: English
Abstract: The problem of a crack perpendicular to and terminating at an interface in bimaterial structure with finite boundaries is investigated. The dislocation simulation method and boundary collocation approach are used to derive and solve the basic equations.Two kinds of loading form are considered when the crack lies in a softer or a stiffer material, one is an ideal loading and the other one fits to the practical experiment loading. Complete solutions of the stress field including the T stress are obtained as well as the stress intensity factors. Influences of T stress on the stress field ahead of the crack tip are studied. Finite boundary effects on the stress intensity factors are emphasized. Comparisons with the probled presented by Chen et al. (int. J. Solids and Structure, 2003,40, 2731-2755) are discussed also.
Subject: Mechanical Engineering\Structural Mechanics
Keywords: Bimaterial stucture, finite boundary, crack, stress intensity factor, T stress
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