ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A steady-state subsonic interface crack propagating between an elastic solid and a rigidsubstrate with crack face contact is studied. Two cases with respective to the contact length areconsidered, i.e., semi-infinite and finite crack face contact. Different from a stationary or an opensubsonic interface crack, stress singularity at the crack tip in the present paper is found to benon-oscillatory. Furthermore, in the semi-infinite contact case, the singularity of the stress field nearthe crack tip is less than 1/2. In the finite contact case, no singularity exists near the crack tip, but lessthan 1/2 singularity does at the end of the contact zone. In both cases, the singularity depends on thelinear contact coefficient and the crack speed. Asymptotic solutions near the crack tip are given andanalyzed. In order to satisfy the contact conditions, reasonable region of the linear contact coefficientis found. In addition, the solution predicts a non-zero-energy dissipation rate due to crack facecontact
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.307.pdf
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