Scattering of SH Waves by a Partially Debonded Cylindrical Inclusion in the Covering Layer

Author:

Qi Hui1,Zhang Yang1ORCID,Chu Fuqing1,Guo Jing1

Affiliation:

1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China

Abstract

This article presents analytical solutions to the problem of dynamic stress concentration and the surface displacement of a partially debonded cylindrical inclusion in the covering layer under the action of a steady-state horizontally polarized shear wave (SH wave); these solutions are using the complex function method and wave function expansion method. By applying the large-arc assumption method, the straight line boundary of the half-space covering layer is transformed into a curved boundary. The wave field of the debonded inclusion is constructed utilizing a Fourier series and boundary conditions of continuity. The impact of debonding upon the dynamic stress concentration and surface displacement around the cylindrical concrete or steel inclusion is analyzed through numerical examples of the SH waves that are incident at normal angles, from a harder medium to a softer medium and from a softer medium to a harder medium. The examples show that various factors (including the medium parameters of the soil layers and the inclusion, the frequency of the incident waves, and the debonding situations) jointly affect the dynamic stress concentration factor and the surface displacement around the structure.

Funder

Fundamental Research Funds for Central Universities of the Central South University

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

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