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A STUDY ON NONSTATIONARY RANDOM VIBRATION OF A VEHICLE IN TIME AND FREQUENCY DOMAINS  

Zhang, L.J. (Department of Mechanical and Automotive Engineering, Liaoning Institute of Technology)
Lee, C.M. (Department of Mechanical and Automotive Engineering, University of Ulsan)
Wang, Y.S. (Department of Mechanical and Automotive Engineering, University of Ulsan)
Publication Information
International Journal of Automotive Technology / v.3, no.3, 2002 , pp. 101-109 More about this Journal
Abstract
A time domain method for solving nonstationary random vibration caused by vehicle acceleration is first proposed in which a time changing model is established for representing nonstationary excitation of a rough road. Furthermore a novel frequency domain method called the transient power spectral density with spatial frequency (TPSD) is presented to obtain a response of vehicle system in frequency domain. This method has been proved to be valid by comparing numerical results with the exact solution.
Keywords
Nonstationary excitation model of rough road; Vehicle acceleration; Transient power spectral density with spatial frequency;
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