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Mixed mode fracture in epicycloid specimens iii. Dislocations

✍ Scribed by W.H. Müller; W. Littmann; H. Gao

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
515 KB
Volume
36
Category
Article
ISSN
0020-7683

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✦ Synopsis

Complex stress potentials are derived to obtain an analytical solution for the stresses in epicycloidal specimens which contain a dislocation[ The solution is used to obtain an analytical expression for the stress intensity factors of cusp!like cracks in such specimens which can be considered as a generalization of the well established concept of Gri.th cracks[ It is shown that by suitable positioning of the dislocation\ both positive and negative mode I stress intensity factors will result[ This illustrates the potential of epicycloid specimens for determination of fracture properties under compressive loading where frictional contact of the crack surfaces is a priori avoided[ Þ 0888 Elsevier Science Ltd[ All rights reserved

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