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Effect of circular holes on the ratchet limit and crack tip plastic strain range in a centre cracked plate

Chen, Haofeng and Chen, Weihang and Li, Tianbai and Ure, James Michael (2011) Effect of circular holes on the ratchet limit and crack tip plastic strain range in a centre cracked plate. Engineering Fracture Mechanics, 78 (11). pp. 2310-2324. ISSN 0013-7944

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Abstract

In this paper a centre cracked plate subjected to cyclic tensile loading and cyclic bending moment is considered. The effect of circular holes drilled in the region of the crack tip on the ratchet limit and crack tip plastic strain range is studied. Direct evaluation of the ratchet limit and crack tip plastic strain range is solved by employing the new Linear Matching Method (LMM). Parametric studies involving hole diameter and location are investigated. The optimum hole location for reducing the crack tip plastic strain range with the least reduction in ratchet limit is identified, and located at a distance 10% of the semi-crack length from the crack tip on the side opposite the ligament for both cyclic tensile loading and cyclic bending moment cases. It is also observed that the optimum location is independent of the hole size for both cyclic loading cases.

Item type: Article
ID code: 31452
Keywords: ratchet limit, shakedown , linear matching method, centre cracked plate, Mechanical engineering and machinery, Mechanics of Materials, Materials Science(all), Mechanical Engineering
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Depositing user: Pure Administrator
Date Deposited: 09 Jun 2011 15:01
Last modified: 21 May 2015 13:23
URI: http://strathprints.strath.ac.uk/id/eprint/31452

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