Interaction Between Debonding Circular Lining And Circular Inclusion In Subsurface Of SH Wave Incident

Nowadays,with the flourishing development of materials science,the research on the safety of materials has received extensive attention.The study on the safety of underground structures is the focus of engineering research today.Such as the stability study of underground tunnel structures or anti-explosion and seismic research of structures.The study of the safety of underground structures is generally to study the elastic wave scattering problem of underground structures.We explore the dynamic stress concentration phenomenon of underground structures when elastic waves are incident.Then analyze the stability of structures by calculating the stress and displacement changes around the structures.In this paper,the problem we researched is the scattering of SH wave in the subspace debonding lining and the hole or inclusion.The focus is on the dynamic stress concentration phenomenon when the elastic wave is incident while the debonding problem and other defects are present together.The problem of elastic wave scattering is attributed to the research of elastic dynamics.This paper mainly uses the idea of "domain division" and " conjunction " to separate two different structures in half space,and uses the function of complex variable method,image method,multi-polar coordinates method and integral transformation method to deal with the problem.The problem of the infinite algebraic equations is solved by the circular lining or the inclusion of internal and external boundary conditions.The model is divided into two regions,I and II.Firstly,we construct the standing wave function of the circular lining or circular lining and the inclusions in the II region.Then construct the functions of incident wave,reflected wave and scattered wave in region I.These functions satisfy the boundary condition on the circle.Secondly,we process the two regions together.Then we construct the equations and use MATLAB software to calculate data.The parameters of the circular lining,the incident angle of the incident wave,the position of the debonding,the distance from another round hole or the inclusion are discussed and analyzed separately.Lastly the variation law of the dynamic stress concentration coefficient in the material when these parameters are changed is discussed.