Three dimensional modified BEM analysis of forward scattering problems in elastic solids

被引：10
|
作者：
Yang, Chen [1 ]
Wang, Bin [1 ]
Qian, Zhenghua [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, 29 Yudao Jie, Nanjing 210016, Peoples R China
来源：
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS | 2021年 / 122卷
关键词：
Guided wave; Forward scattering; Three-dimensional modified BEM; infinite; boundary; SINGULAR BOUNDARY METHOD; LAMB WAVE; SHAPE RECONSTRUCTION; POINT-LOAD; HOLE;
D O I：
10.1016/j.enganabound.2020.10.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, a three-dimensional modified boundary element method (BEM) is proposed to solve the guided wave scattering problem by cavity-type flaws in an infinite plate. The aim of modification is to correct the artificial scattering introduced by inevitable modal truncation at far-field in the traditional BEM model. The far-field wave displacement fields beyond the BEM model are assumed to be the summation of orthogonal propagating guided wave patterns, and are finally incorporated into BEM equation sets as the modified items to account for the contribution of infinite boundaries traditionally omitted. With this improvement, the spurious reflected waves are eliminated. The method is formulated for a three-dimensional homogeneous, isotropic, elastic plate and its implementation is discussed in details. The formulation is finally validated for several benchmark problems.
引用
收藏
页码：145 / 154
页数：10
相关论文
共 50 条
  • [41] Two-dimensional BEM for analysis of potential Laplace problems
    Vujević, Slavko
    Srzentić-Gazzari, Višnja
    Gazzari, Sergio
    International Journal for Engineering Modelling, 2002, 15 (1-4) : 45 - 50
  • [42] Forward scattering amplitudes and contributions of three-nucleon forces in nd elastic scattering
    Ishikawa, S
    Tanifuji, M
    Iseri, Y
    SPIN 2000, 2001, 570 : 724 - 728
  • [43] Finite element analysis of three-dimensional frictionless elastic contact problems
    Sassi, M
    Desvignes, M
    Foulon, M
    MECANIQUE INDUSTRIELLE ET MATERIAUX, 1996, 49 (01): : 23 - 27
  • [44] On scattering inversion of a three dimensional elastic wave equation
    Zhu, Wenhao
    Zhong, Weifung
    Huazhong Ligong Daxue Xuebao/Journal Huazhong (Central China) University of Science and Technology, 1994, 22 (09):
  • [45] Two-dimensional contact mechanics problems involving inhomogeneously elastic solids split into three distinct layers
    Chidlow, S. J.
    Teodorescu, M.
    INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 2013, 70 : 102 - 123
  • [46] Saint-Venant Problems for Two-dimensional Elastic Solids
    Zhang, Weixiang
    2019 3RD INTERNATIONAL WORKSHOP ON RENEWABLE ENERGY AND DEVELOPMENT (IWRED 2019), 2019, 267
  • [47] Further improvements on three dimensional transient BEM elastodynamic analysis
    Coda, HB
    Venturini, WS
    ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 1996, 17 (03) : 231 - 243
  • [48] Analysis of three-dimensional natural convection of nanofluids by BEM
    Ravnik, J.
    Skerget, L.
    Hribersek, M.
    ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2010, 34 (12) : 1018 - 1030
  • [49] Stochastic BEM for the Vibroacoustic Analysis of Three-Dimensional Structures
    D'Amico, R.
    Pratellesi, A.
    Pierini, M.
    Baldanzini, N.
    ADVANCES IN ACOUSTICS AND VIBRATION, 2011, 2011
  • [50] Problems of a cut in a three-dimensional elastic wedge
    Aleksandrov, V.M.
    Pozharskii, D.A.
    Journal of Applied Mathematics and Mechanics, 2006, 70 (03): : 483 - 492
12345