A Griffith crack model in a generalized nonhomogeneous interlayer of bonded dissimilar half-planes
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Piezoelectric Device Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, China
School of Engineering, Design and Built Environment, Western Sydney University, Penrith, Australia
Submission date: 2023-02-01
Final revision date: 2023-05-03
Acceptance date: 2023-05-12
Online publication date: 2023-06-11
Publication date: 2023-07-31
Corresponding author
Aibing Zhang   

School of Mechanical Engineering & Mechanics, Ningbo University, China
Journal of Theoretical and Applied Mechanics 2023;61(3):495-507
The Griffith crack problem in bonded dissimilar half-planes is examined. To eliminate the unrealistic oscillatory stress near the interface crack tips, the interfacial transition zone is modeled by a very thin nonhomogeneous interlayer whose elastic properties vary contin- uously between the bonded materials and adhesive material. The interlayer thickness is assumed to be the sum of the maximum heights of asperities at the two bonded material surfaces. The crack problem is reduced to a set of Cauchy integral equations which can be solved numerically. The applicability of the generalized nonhomogeneous interlayer model is investigated by comparing it with the classical interface crack model.
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