The effect of small internal and dashpot damping on a trapped mode of a semi-infinite string

IF 4.3 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2024-09-26 DOI:10.1016/j.jsv.2024.118749

A.K. Abramian , S.A. Vakulenko , W.T. van Horssen , A. Jikhareva

引用次数: 0

Abstract

The effect of small internal and dashpot damping on a trapped mode of a 1D-waveguide, that is, a semi-infinite string on a Winkler elastic foundation, has been investigated. At the edge of the string a mass–spring–damper system is attached. The string is assumed to have an internal damping. Four models for the internal damping are considered: air damping, Kelvin–Voigt damping, local Kelvin–Voigt damping, and damping related to time hysteresis. Depending on the internal damping and the parameters in the formulated problem, it will be shown that the amplitude of a trapped mode of the string can decrease or increase with time.

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小内阻尼和仪表盘阻尼对半无限弦受困模式的影响

研究了小的内部阻尼和仪表盘阻尼对一维波导（即温克勒弹性地基上的半无限弦）的陷波模式的影响。在弦的边缘连接了质量-弹簧-阻尼系统。假定弦具有内部阻尼。考虑了四种内部阻尼模型：空气阻尼、开尔文-伏依格特阻尼、局部开尔文-伏依格特阻尼以及与时间滞后相关的阻尼。根据内部阻尼和问题中的参数，可以看出弦的受困模式的振幅会随着时间的推移而减小或增大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.