Nonlinear Dynamics of Acoustic Compressors

摘要：

Analysis of the nonlinear features of Acoustic Compressors(AC)is carried out by reducing a developed distributed-parameter model to a single-mode dynamical model through the use of the mode shape corresponding to the excitation frequency.The single-mode models are developed for ACs with entirelydriven and piston-driven resonators with cylindrical cavities.This approach reveals that the dynamics of entirely-driven cavity resonators reduces to that of a Duffing oscillator with a softening cubic stiffness which is subjected to simultaneous harmonic and parametric excitations.However,piston-driven resonators reduce to a Duffing oscillator which is subjected to only harmonic excitation.

关键词： nonlinear oscillations standing waves acoustic resonators finite element modeling

作者: A. El-Sabbagh A. Baz

作者单位: ASU Sound and Vibration Lab,Ain Shams University,Cairo,Egypt Department of Mechanical Engineering,University of Maryland,College Park,MD 20742,USA

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）