{"title":"Experimental study of parametric resonances of silicone cord induced by pulsating axial force","authors":"Andrzej Czerwiński","doi":"10.1016/j.jsv.2025.119387","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents the results of an experimental investigation into the dynamics of a silicone cord subjected to a pulsating tensile force. The system is examined to identify dynamic instabilities, with particular focus on the phenomenon of parametric resonance. Two measurement methods were used: a contact method using accelerometers and a non-contact method using two high-speed cameras. The recorded signals were subsequently analysed to gain insight into the system’s motion during resonant vibrations. To analyse the motion of the system in more depth, a numerical method was proposed to determine the mode shapes of the individual vibration components involved in parametric resonance. In the studied system, instability ranges were determined and identified, and the effects of amplitude and excitation frequency on the resulting vibrations were investigated. The study revealed diverse dynamic behaviours, including simple parametric resonances with periodic, polyharmonic, planar vibrations, as well as combination resonances involving more complex, non-periodic, spatial motion. Vibrations were examined both in two-mode combination resonances and in regions where multiple types of resonances were simultaneously excited. Especially in the latter cases, the nature of the motion of the system is particularly complex.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119387"},"PeriodicalIF":4.9000,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sound and Vibration","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022460X25004602","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ACOUSTICS","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents the results of an experimental investigation into the dynamics of a silicone cord subjected to a pulsating tensile force. The system is examined to identify dynamic instabilities, with particular focus on the phenomenon of parametric resonance. Two measurement methods were used: a contact method using accelerometers and a non-contact method using two high-speed cameras. The recorded signals were subsequently analysed to gain insight into the system’s motion during resonant vibrations. To analyse the motion of the system in more depth, a numerical method was proposed to determine the mode shapes of the individual vibration components involved in parametric resonance. In the studied system, instability ranges were determined and identified, and the effects of amplitude and excitation frequency on the resulting vibrations were investigated. The study revealed diverse dynamic behaviours, including simple parametric resonances with periodic, polyharmonic, planar vibrations, as well as combination resonances involving more complex, non-periodic, spatial motion. Vibrations were examined both in two-mode combination resonances and in regions where multiple types of resonances were simultaneously excited. Especially in the latter cases, the nature of the motion of the system is particularly complex.
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.