%0 Journal Article
%T Nonlinear vibration in metal plate excited by high-power ultrasonic pulses<br>高功率超声脉冲激励下金属板的非线性振动现象研究
%A Chen Zhao-Jiang
%A Zhang Shu-Yi
%A Zheng Kai
%A <br>陈赵江
%A 张淑仪
%A 郑凯
%J 物理学报
%D 2010
%I 
%X Nonlinear vibration phenomena including superharmonics, subharmonics, quasi-subharmonics and chaos in metal plate excited by intensive ultrasonic pulses are studied experimentally and theoretically. In the experiments, the plates are excited by the ultrasonic pulse modulated high frequency vibration, and the nonlinear vibration velocities of the plates are measured by laser vibrometer for different sizes and fixing conditions of the plates. The analysis of time series, frequency spectrum and phase space are also performed to characterize the nonlinear vibration of the plate. According to the experimental conditions, a vibro-impact model with nonlinear contact damping is presented to explore the generation mechanism of the complicated nonlinear vibration in the plate. In the dynamic model, the intermittent vibro-impact between the ultrasonic transducer horn and plate are considered as the main source for generating the strongly nonlinear vibration in the plate. The numerical calculation results are in agreement with the observed experimental phenomena.
%K nonlinear plate vibration
%K intensive ultrasonic pulse excitation
%K vibro-impact dynamics<br>非线性板振动
%K 强超声脉冲激发
%K 振动-碰撞动力学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=EDB5DFC899DE843CB2232125F96A3CCC&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=B31275AF3241DB2D&sid=B6B987254A042366&eid=7EF52AFF868921C3&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=36