Articles


Document Type
Journal article (JA)
Title
A theoretical approach to multiple scattering of surface waves by shallow cavities in a half-space
Author
Phan, Haidang(1); Cho, Younho(2); Li, Weibin(3)
Address
(1) Institute of Mechanics, Vietnam Academy of Science and Technology, 264 Doi Can, Ba Dinh, Hanoi, Viet Nam; (2) School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro, 63beon-gil, Geumjeong-gu, Busan; 609-735, Korea, Republic of; (3) Department of Aeronautics, Xiamen University, South Siming Road, Xiamen; 361005, China
RPAddress
Pusan Natl Univ, Sch Mech Engn, 2 Busandaehak Ro, Busan 609735, South Korea.
Email
ResearchID
ORCID
Journal
Ultrasonics
Publisher
Elsevier B.V.
ISSN
0041-624X
Published
2018-08, 88:16-25.
JCR
4
ImpactFactor
2.327
ISBN
Fund_Code
Vietnam National Foundation for Science and Technology Development (NAFOSTED) [107.02-2016.23]
HYMC
HYDD
HYKSRQ
HYJSRQ
HYLWLB
HYJB
Keywords
Geometry - Multiple scattering - Numerical methods - Sailing vessels - Surface scattering - Surface waves
Abstract
The current theoretical work investigates multiple scattering of surface waves from shallow cavities at the surface of an elastic half-space. The multiple scattered field is shown to be equivalent to the field generated by the application of a distribution of tractions, obtained from the incident wave, on the surfaces of the cavities. Using a self-consistent method, an analytical approach is proposed to derive an explicit set of equations which approximate the multiple scattered field. Its far-field displacement amplitude is then calculated and verified by numerical calculation obtained by the boundary element method (BEM). The analytical and BEM results are graphically presented and show excellent agreement when the depths of cavities are small compared to the wavelength. The improvement of the proposed approach relative to a first order approximation is reported and its limitations are discussed based on the results of comparison. ? 2018 Elsevier B.V.
WOS Categories
Acoustics; Radiology, Nuclear Medicine & Medical Imaging
Accession Number
WOS:000433884200003
EI收录号
20181104895397
DOI
10.1016/j.ultras.2018.02.018
ESI_Type
CLINICAL
Collection
SCIE, EI

Back to List