Calculation of stress intensities at sharp notches in anisotropic media

We present a procedure to calculate mode I and II notch stress intensities in anisotropic media using the path-independent H-integral. The method is based on coupling the analysis of asymptotic stress and displacement fields near a sharp notch with a path independent integral that results from the a...

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Bibliographic Details
Published inEngineering fracture mechanics Vol. 61; no. 5; pp. 635 - 654
Main Authors Labossiere, P.E.W., Dunn, M.L.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.1998
Subjects
anisotropic media
contour integral
sharp notches
stress intensities
sharp notches
contour integral
stress intensities
anisotropic media
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Summary:We present a procedure to calculate mode I and II notch stress intensities in anisotropic media using the path-independent H-integral. The method is based on coupling the analysis of asymptotic stress and displacement fields near a sharp notch with a path independent integral that results from the application of Betti's reciprocal theorem to the notched solid. The approach is demonstrated for two loading/geometry combinations that arise naturally in etched single crystal silicon: mode I loading of a 70.53° notch and mixed mode I and II loading of a T-structure with a 90° notch. Results agree well with those obtained by correlating computed notch-flank displacements with the asymptotic solution.
ISSN:0013-7944
1873-7315
DOI:10.1016/S0013-7944(98)00039-3