DYNAMIC FRACTURE OF TRANSVERSELY ISOTROPIC COUPLED THERMOELASTIC SOLIDS: WEDGING BY A CYLINDER WITH FRICTION

A cylinder of infinite length is introduced in a semi-infinite closed slit in a transversely isotropic solid. Translation toward the slit edge produces mode I crack extension in plane strain. Translation is resisted by cylinder/crack friction, and the crack closes in the wake of the cylinder. A dyna...

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Bibliographic Details
Published in:Journal of thermal stresses 2004-11, Vol.27 (11), p.1053-1073
Main Author: Brock, L. M.
Format: Article
Language:English
Subjects:
coupled thermoelasticity
crack closure
crack wedging
friction
transverse isotropy
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Summary:A cylinder of infinite length is introduced in a semi-infinite closed slit in a transversely isotropic solid. Translation toward the slit edge produces mode I crack extension in plane strain. Translation is resisted by cylinder/crack friction, and the crack closes in the wake of the cylinder. A dynamic steady state governed by coupled thermoelasticity ensues in which crack edge and cylinder move at the same constant subcritical speed. The problem has features of both sliding contact and fracture, and robust asymptotic results give solutions that are analytic and-given anisotropy and thermoelasticity-simple in form. Calculations for zinc and a circular cylinder show the effects of cylinder speed and friction on aspects such as temperature change, crack closure compression, and fracture energy release rate.
ISSN:0149-5739
1521-074X
DOI:10.1080/01495730490498403