噪声与振动控制2016，Vol.36Issue(4)：38-43,6.DOI:10.3969/j.issn.1006-1335.2016.04.008
气激状态下黏弹性阻尼薄板的有限元建模与分析
Finite Element Modeling and Analysis of Viscoelastic Damping Plates under Aerodynamic Excitation
摘要
Abstract
An important content of the study on viscoelastic damping is to establish the model for vibration analysis of viscoelastic damping plates under the aerodynamics excitation. In this article, based on experimental data, a simplified finite element modeling (FEM) method for analyzing vibration characteristics of a viscoelastic cantilever thin plate under aerodynamic load is proposed. First of all, the general process of FEM modeling is briefly introduced. Then, the vibration characteristics of a cantilever thin plate before and after the application of viscoelastic damping material are tested using a special aerodynamic test rig, the resonance frequencies and the responses of the thin plate are obtained. Next, due to the need of utilizing FEM, the aerodynamic load on the thin plate is gotten using the computational fluid dynamics simulation software Fluent. Furthermore, according to the energy consumption law of the thin plate before and after damping treatment, the Young’s modulus and the loss factor of the viscoelastic material are identified using inversion method. Finally, the harmonic response of the viscoelastic damping plate is calculated by introducing the obtained aerodynamic load and the viscoelastic material parameters. The correctness of the proposed analysis method is verified by comparing the calculated response values with experimental results.关键词
振动与波/气激/黏弹性阻尼/薄板/有限元建模Key words
vibration and wave/aerodynamic excitation/viscoelastic damping/thin plate/finite element modeling分类
数理科学引用本文复制引用
王玥涵,李上青,孙伟..气激状态下黏弹性阻尼薄板的有限元建模与分析[J].噪声与振动控制,2016,36(4):38-43,6.基金项目
国家自然科学基金资助项目 （）
