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RESEARCH PAPERS

A New Random Data Description and Its Use in Transferring Road Roughness to Vehicle Response

[+] Author and Article Information
J. C. Wambold, W. H. Park

Department of Mechanical Engineering, Pennsylvania State University, University Park, Pa.

R. G. Vashlishan

Sikorsky Aircraft, Stratford, Conn.

J. Eng. Ind 96(2), 676-679 (May 01, 1974) (4 pages) doi:10.1115/1.3438380 History: Received June 06, 1973; Online July 15, 2010

Abstract

The initial portion of the paper discusses the more conventional method of obtaining a vehicle transfer function where phase and magnitude are determined by dividing the cross spectral density of the input/output by the power spectral density (PSD) of the input. The authors needed a more descriptive analysis (over PSD) and developed a new signal description called Amplitude Frequency Distribution (AFD); a discrete joint probability of amplitude and frequency with the advantage of retaining amplitude distribution as well as frequency distribution. A better understanding was obtained, and transfer matrix functions were developed using AFD.

Copyright © 1974 by ASME
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