Modeling and parameters of absorbing boundary for ultrasonic-guided wave in FE simulation - 文章详情页

作者：

Wu, B. (Wu, B..) (学者：吴斌) | Zhang, Y.-C. (Zhang, Y.-C..) | Zheng, Y. (Zheng, Y..) | He, C.-F. (He, C.-F..) (学者：何存富)

收录：

Scopus PKU CSCD

摘要：

Finite　element　method　(FEM)　is　normally　used　to　study　guided　wave　propagating　in　complex　structure　and　the　scattering　field　in　defects.　A　key　problem　in　FEM　is　to　set　the　absorbing　region　to　reduce　the　reflection　from　boundary.　A　method　by　changing　the　damping　coefficient　of　material　to　achieve　absorbing　boundary　in　a　3D　model　is　realized,　and　it　is　also　discussed　how　to　choose　parameters　such　as　layer　number　and　damping.　Results　show　that　the　size　of　the　absorbing　boundary　is　the　main　influencing　factor,　and　the　length　should　be　longer　than　two　wavelengths.　To　prove　its　validity,　this　model　was　applied　to　calculating　scattering　matrix　of　defects.

关键词：

3-D finite element model; Absorbing layers by increasing damping; Absorbing region; Ultrasonic-guided wave

作者机构：

[ 1 ] [Wu, B.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Zhang, Y.-C.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zheng, Y.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 4 ] [He, C.-F.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

吴斌
[Wu, B.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

Wb@bjut.edu.cn

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