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RESEARCH PAPERS

A Stability Theorem for Mechanical Systems With Constraint Damping

[+] Author and Article Information
D. L. Mingori

University of California, Los Angeles, Calif.

J. Appl. Mech 37(2), 253-258 (Jun 01, 1970) (6 pages) doi:10.1115/1.3408497 History: Revised June 26, 1969; Online April 06, 2010

Abstract

The effect of energy dissipation on the stability of motion of a mechanical system is a topic that has received considerable attention over the past 100 years. Since the advent of artificial Earth satellites, investigations concerned with spacecraft stability have led to renewed interest in this subject. Whereas previous work has dealt almost exclusively with damping forces that may be classified as generalized velocity damping forces; i.e., damping forces that satisfy the inequality

i=1n Qii ≦ 0
where the Qi ’s are nonconservative generalized forces and the q̇i ’s are generalized velocities, it has been found recently that a more general description of damping is sometimes desirable. Damping forces not satisfying the previously mentioned inequality have been called “constraint damping forces.” In the present paper, a theorem useful in the study of systems with constraint damping is stated and proved. This theorem represents a generalization of the Kelvin-Tait-Chetaev theorem for systems with generalized velocity damping only.

Copyright © 1970 by ASME
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