An Effect of the First Non-Singular Term of the Williams Asymptotic Expansion to the Stability of the Bi-Material Orthotropic Notch

Tomáš Profant; Jan Klusák; Oldřich Ševeček; Michal Kotoul; Miroslav Hrstka; Petr Marcián

doi:10.4028/www.scientific.net/KEM.592-593.745

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593An Effect of the First Non-Singular Term of the...

An Effect of the First Non-Singular Term of the Williams Asymptotic Expansion to the Stability of the Bi-Material Orthotropic Notch

Abstract:

The domain of the generalized stress intensity factors dominance ahead of the notch tip can be rather small with respect to the length of the perturbing cracks initiated from the tip of the notch. Thus the non-singular terms of the stress asymptotic expansion at the notch tip would play an important role in the notch tip stability. Following the procedures dealing with complex potential theory and path-independent two-state integrals developed for the singular stress analysis of the stress concentrators one can evaluate their magnitude and include them to the energy release rate of the preexisting crack initiated from the notch tip applying the matched asymptotic procedure. The presented analysis should lead to better understanding of the notch stability process and precising of the notch stability criteria.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

745-748

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.745

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Online since:

November 2013

Authors:

Tomáš Profant, Jan Klusák, Oldřich Ševeček, Michal Kotoul, Miroslav Hrstka*, Petr Marcián

Keywords:

Matched Asymptotic Expansion, Orthotropic Bi-Material Notch, Stress Non-Singular Terms, T-Stress, Two-State Integral, Ψ-Integral

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