Modal Analysis of a Flexible Beam Attaching Multiple Absorbers

摘要：

　　Structural wave propagation in beam structures can lead to unwanted noise transmission and radiation.Dissipation effects of the multiple absorbers have been proved.This paper presents a model of flexible beam with complex boundary conditions and this model with multiple attaching absorbers which are used to dissipate energy of main structure.The beam model are formulated by linear Lagrange equation and discretized by the Ritz method and the model with multiple absorbers is introduced by substructure method.Consequently, the mass matrix and stiffness matrix are obtained and numerical simulation is processed.Natural frequencies with corresponding modal mode of are obtained.Comparing the results between two models, the absorbers can enhance the natural frequencies effectively and the quantities of absorbers agree with the orders of frequencies and corresponding modes.

关键词： Modal analysis Flexible beam Multiple absorbers

作者: Jun Li Chu Sheng Liu Feng Li Zhong Xian Wang

作者单位: School of Mechanical and Electrical Engineering China University of Mining and Technology Xuzhou,Jiangsu Province,China

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 154-157

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）