ハイブリッド境界要素法を用いた大領域ラム波シミュレーション

林, 高弘; 琵琶, 志朗; 遠藤, 茂寿

日本機械学会論文集 A編, 1999, 65(630), 210-217

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Identifier to cite or link to this item: https://hdl.handle.net/11094/89239

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Title
ハイブリッド境界要素法を用いた大領域ラム波シミュレーション
Large-scale simulation of Lamb wave propagation by Hybrid Boundary Element Method
ハイブリッド　キョウカイ　ヨウソ　ホウ　ヲ　モチイタ　ダイリョウイキ　ラムハ　シミュレーション
Creator
NRID
1000030324479 1000030324479
ORCID
0000-0001-6064-4658 0000-0001-6064-4658
researchmap permalink
takahiro_hayashi takahiro_hayashi
Scopus Author ID
37064150200 37064150200
CreatorName
林, 高弘 ; ハヤシ, タカヒロ ; Hayashi, Takahiro
NRID
1000090273466 1000090273466
CreatorName
琵琶, 志朗 ; ビワ, シロウ ; Biwa, Shiro
CreatorName
遠藤, 茂寿 ; エンドウ, シゲヒサ ; Endoh, Shigehisa
Subject
Ultrasonic Inspection
Boundary Element Method
Computational Mechanics
Lamb Wave
Large-Scale Simulation
Abstract
The simulation of Lamb wave propagation is an efficient tool to improve the accuracy of nondestructive inspection of metallic plates by ultrasonic methods. However the widely used modeling techniques such as FDM, FEM and BEM require too much computation time. Since the Lamb wave technique is often used for large structures relative to the ultrasonic wavelength (e.g. fluid pipes, storage tanks etc.), its computing requires a huge number of nodes or elements which are nearly proportional to computation time. This study is therefore focused on the Hybrid BEM (HBEM), which is the combination of exact Lamb wave theory and BEM for two-dimensional elastodynamics. In HBEM much less nodes should be considered in the calculations, and it results in much shorter calculation time. A description of HBEM used for Lamb wave simulation is given in this paper. The parameters for the exact solution of Lamb wave propagation were optimized to achieve the shortest calculation time. Finally, an effective simulation of a large structure is presented under pre-determined conditions.
Publisher
日本機械学会
The Japan Society of Mechanical Engineers
Source Title
日本機械学会論文集 A編
Transactions of the Japan Society of Mechanical Engineers Series A
Volume (Issue)
65(630)
Page
210-217
Date of Issued
1999-02-25
Language
Japanese
Handle URL
https://hdl.handle.net/11094/89239
PISSN
03875008
NCID
AN0018742X
AA11552999
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1299/kikaia.65.210
Access Rights
open access
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article