{"title":"Vibro-acoustic characteristics of mass-loaded plates enforced by the spring-damper systems","authors":"","doi":"10.1016/j.enganabound.2024.105887","DOIUrl":null,"url":null,"abstract":"<div><p>Spring-damper systems have a wide application in engineering, especially playing a key role in vibration suppression and sound modulation. In this paper, a unified method is proposed for investigating the effect of spring-damper systems on the vibro-acoustic characteristics of mass-loaded plates. The system of the vibro-acoustic coupling model is obtained by combining Hamilton's principle and the Rayleigh-Ritz method, and the strong coupling between the structure and the fluid is considered through the work done by the sound pressure. Arbitrary boundary conditions are modeled by adjusting the value of the constraint spring stiffness. The spectral-geometry method (SGM) is used to expand the midplane displacements of the structure and additional functions are added to overcome potential discontinuities. The sound radiation of the plate is calculated by Rayleigh integration. The accuracy of the method is verified by comparing the finite element method (FEM) with the theoretical method. The effects of strong and weak coupling, boundary conditions, parameters of the spring-damper system and plate geometry on the vibro-acoustic characteristics of plate structures are discussed. This paper provides a useful reference for spring-damper systems in vibration control and sound modulation of plate structures.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Analysis with Boundary Elements","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0955799724003618","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Spring-damper systems have a wide application in engineering, especially playing a key role in vibration suppression and sound modulation. In this paper, a unified method is proposed for investigating the effect of spring-damper systems on the vibro-acoustic characteristics of mass-loaded plates. The system of the vibro-acoustic coupling model is obtained by combining Hamilton's principle and the Rayleigh-Ritz method, and the strong coupling between the structure and the fluid is considered through the work done by the sound pressure. Arbitrary boundary conditions are modeled by adjusting the value of the constraint spring stiffness. The spectral-geometry method (SGM) is used to expand the midplane displacements of the structure and additional functions are added to overcome potential discontinuities. The sound radiation of the plate is calculated by Rayleigh integration. The accuracy of the method is verified by comparing the finite element method (FEM) with the theoretical method. The effects of strong and weak coupling, boundary conditions, parameters of the spring-damper system and plate geometry on the vibro-acoustic characteristics of plate structures are discussed. This paper provides a useful reference for spring-damper systems in vibration control and sound modulation of plate structures.
期刊介绍:
This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods.
Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness.
The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields.
In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research.
The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods
Fields Covered:
• Boundary Element Methods (BEM)
• Mesh Reduction Methods (MRM)
• Meshless Methods
• Integral Equations
• Applications of BEM/MRM in Engineering
• Numerical Methods related to BEM/MRM
• Computational Techniques
• Combination of Different Methods
• Advanced Formulations.