Free Rotation of an Elastic Rod With an End Mass

[+] Author and Article Information
C. Y. Wang

Michigan State University, East Lansing, Mich. 48824

J. Appl. Mech 53(4), 864-868 (Dec 01, 1986) (5 pages) doi:10.1115/1.3171872 History: Received October 21, 1985; Revised March 18, 1986; Online July 21, 2009


This paper models a rotating space satellite with a long flexible antenna. Large deformations of the elastic rod are caused by the centrifugal forces. Bifurcation analysis shows the effect of end mass on the critical rotation speeds above which sinuous equilibrium configurations occur. The nonlinear governing equations are then integrated numerically. We find a class of solutions with a looped configuration whose existence requires a certain minimum total energy and minimum angular momentum. Catastrophic changes are possible.

Copyright © 1986 by ASME
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