Implementation of the novel perfectly matched layer element for elastodynamic problems in time-domain finite element method

被引：24

作者：

Chen, Junwei ^{[1
,2
]}

Shou, Yundong ^{[1
]}

Zhou, Xiaoping ^{[1
]}

机构：

[1] Wuhan Univ, Sch Civil Engn, 8 Donghu South Rd, Wuhan 430072, Peoples R China

[2] Guizhou Prov Key Lab Rock & Soil Mech & Engn Safe, Guiyang 550025, Peoples R China

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2022年 / 152卷

基金：

中国国家自然科学基金;

关键词：

Numerical simulation; Viscoelastic; Perfectly matched layer; Time-domain finite element method; Elastodynamic problems; ABSORBING BOUNDARY-CONDITION; GRAZING-INCIDENCE; WAVE-PROPAGATION; REDUCTION METHOD; ELASTIC-WAVES; FORMULATION; ABSORPTION; MODEL; PML;

D O I：

10.1016/j.soildyn.2021.107054

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

For the numerical simulation of infinite domain problems in finite element method (FEM), unwanted reflection from the artificial boundaries of the model is a limiting factor. Therefore, in this paper, based on the theory of perfectly matched layer (PML), a novel element is derived to deal with absorbing boundary conditions in the framework of time-domain finite element method (TDFEM). Then, by combining with the viscoelastic model and modified Newmark algorithm, a novel method is proposed to absorb outgoing waves in unbounded domains. Numerical results show that the proposed method can efficiently absorb the elastic wave, and it can be employed to solve infinite domain problems.

引用

页数：13

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