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Strain energy release rate for an interface crack in linearized couple-stress theory

✍ Scribed by S. Itou

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
731 KB
Volume
40
Category
Article
ISSN
0013-7944

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✦ Synopsis

W-In

this paper, the efht of couple-stresses on the strain energy release rate for an interface crack is examined. An internal pressure is applied on surfaces of the crack situated between two dissimilar half-planes. The oscillatory stress singularities and material overlappings usually appear near the crack tips in the so-called exact solutions. To avoid these irregularities the crack surface displacements and the crack surface rotation are expanded in series of trigonometrical functions. A mod&J version of the Schmidt method is then used to determine those coefficients in the series. Numerical calculations are carried out to reveal the effect of the couple-stresses on the strain energy release rate for the interface crack.

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