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RESEARCH PAPERS: Vibration and Sound

Analysis of a High-Speed Flexible Four-Bar Linkage: Part II—Analytical and Experimental Results on the Apollo

[+] Author and Article Information
F. W. Liou

Department of Mechanical and Aerospace Engineering, University of Missouri-Rolla

A. G. Erdman

Productivity Center, Department of Mechanical Engineering, University of Minnesota-Twin City

J. Vib., Acoust., Stress, and Reliab 111(1), 42-47 (Jan 01, 1989) (6 pages) doi:10.1115/1.3269821 History: Received January 26, 1988; Online November 23, 2009

Abstract

By using the equations of motion derived from the virtual displacement [1], a general finite element analysis computer code FEMAP (F our-bar E lastic M echanism A nalysis P rogram) for the planar motion is developed on the Apollo computer. The output of this program includes the following analysis for any point in the mechanism: velocity, acceleration, natural frequency, displacement, stress and strain. The displacement, stress and strain can be either quasi-static or full vibration analysis. The animation of the entire motion of the flexible linkage can be displayed on the screen. Analytical results are compared with results from a new experimental method which combines high-speed photography with a digital image processing technique.

Copyright © 1989 by ASME
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