噪声与振动控制2024，Vol.44Issue(3)：56-61,6.DOI:10.3969/j.issn.1006-1355.2024.03.009
周期约束阻尼设计板结构减振降噪特性分析
Analysis of Vibration and Noise Reduction Characteristics of Plate Structures with Periodically Constrained Damping
摘要
Abstract
In order to explore more efficient damping structure design,combining the artificial periodic structure characteristics with constrained damping vibration and noise reduction technique,the structural vibration and noise characteristics and sound radiation feature of the substrate plates and damping plates with different constraints are analyzed by finite element simulation and experimental tests.The vibration and noise reduction characteristics of the plate structure with the periodically constrained damping design is analyzed.The results show that compared with the traditional constrained damping design,the periodical constrained damping design can more effectively suppress the broadband vibration and acoustic radiation of the substrate plates under the condition of the same additional damping mass.In particular,it has a certain effect on improving low-frequency vibration and noise below 350 Hz,and helps to realize the lightweight of the damping structure.However,the periodic constrained damping design may increase the vibration and noise of the constrained layer and change the acoustic radiation efficiency of the plates.Generally speaking,the periodic design has positive significance for improving the vibration and noise reduction performance of constrained damping structures.关键词
振动与波/周期约束阻尼/板结构/结构振动/声辐射Key words
vibration and wave/periodically constrained damping/plate structures/structural vibration/acoustic radiation引用本文复制引用
彭骞,宋玉宝,李桂兵,蔡卫东..周期约束阻尼设计板结构减振降噪特性分析[J].噪声与振动控制,2024,44(3):56-61,6.基金项目
国家自然科学基金资助项目(51905532) （51905532）
