Efficient unsplit perfectly matched layers for finite-element time-domain modeling of elastodynamics

doi:10.1061/(ASCE)EM.1943-7889.0001145

IR > 土木工程学院

	Efficient unsplit perfectly matched layers for finite-element time-domain modeling of elastodynamics
	Zhou, Feng-Xi; Ma, Qiang; Gao, Bei-Bei
	2016-11-01
发表期刊	Journal of Engineering Mechanics
ISSN	07339399
卷号	142 期号:11
摘要	The perfectly matched layer (PML) is a highly efficient absorbing boundary used for the numerical modeling of an elastic wave equation on an unbounded domain. In this work, the authors are concerned with a second-order unsplit PML for transient elastodymanic problems in a semi-plane medium with finite-element approximations. First, based on the concept of stretched coordinates, an efficient unsplit PML formulation is proposed without higher derivatives. Then a finite-element time-domain scheme of a second-order PML in a displacement formulation is developed, in which the Galerkin method is used in space discretization and a Newmark-type scheme is employed for time stepping. Inside the absorbing layer, only one auxiliary vector is required. Hence, the scheme is cheap to implement and easily coupled with standard finite-element methods. Finally, the accuracy and efficiency of the present unsplit PML is demonstrated in numerical examples with a finite-element time-domain scheme. © 2016 American Society of Civil Engineers.
关键词	Elastic waves Electromagnetic wave absorption Finite difference method Finite element method Galerkin methods Numerical methods Wave equations Absorbing boundaries Displacement formulation Finite element approximations Finite element time domains Higher derivatives Perfectly Matched Layer Space discretizations Standard finite element
DOI	10.1061/(ASCE)EM.1943-7889.0001145
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
WOS记录号	WOS:000386362500005
出版者	American Society of Civil Engineers (ASCE)
EI入藏号	20164603016676
EI主题词	Time domain analysis
EI分类号	711 Electromagnetic Waves - 921 Mathematics - 931.1 Mechanics
来源库	Compendex
分类代码	711 Electromagnetic Waves - 921 Mathematics - 931.1 Mechanics
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112537
专题	土木工程学院机电工程学院
通讯作者	Zhou, Feng-Xi
作者单位	Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhou, Feng-Xi,Ma, Qiang,Gao, Bei-Bei. Efficient unsplit perfectly matched layers for finite-element time-domain modeling of elastodynamics[J]. Journal of Engineering Mechanics,2016,142(11).
APA	Zhou, Feng-Xi,Ma, Qiang,&Gao, Bei-Bei.(2016).Efficient unsplit perfectly matched layers for finite-element time-domain modeling of elastodynamics.Journal of Engineering Mechanics,142(11).
MLA	Zhou, Feng-Xi,et al."Efficient unsplit perfectly matched layers for finite-element time-domain modeling of elastodynamics".Journal of Engineering Mechanics 142.11(2016).