Summary
An example is given for the kinetic instability of an elastic system under random time-dependent forces. A circular ring, loaded by forces of constant direction, is examined by means of the theory of stability of an elastic motion which was given byE. Mettler in 1947. If certain relations exist between the critical frequencies of the ring, the problem can be reduced to the solution of a differential equation with random coefficients already discussed byF. Weidenhammer. Stability occurs if damping is of order\(\varepsilon ^2 (\varepsilon<< 1)\), while in deterministic cases damping must be of order ε1, where ε denotes the magnitude of the excitation.
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Literatur
E. Mettler, Ing.-Archiv16, 135 (1947);17, 418 (1949).
F. Weidenhammer, Ing.-Archiv33, 404 (1964).
R. Kappus, ZAMM19, 271, 344 (1939)
G. Vogt,Die erzwungenen Schwingungen eines Kreisringes und ihre Stabilität unter pulsierenden Streckenlasten, Diss. Karlsruhe (1964).
W. Hahn,Theorie und Anwendung der direkten Methode von Lyapunow, Berlin (1959).
S. H. Crandell undW. D. Mark,Random Vibration in Mechanical Systems, New York und London (1963).
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Vogt, G. Ein kinetisches Stabilitätsproblem bei stochastischer Erregung. Journal of Applied Mathematics and Physics (ZAMP) 17, 68–78 (1966). https://doi.org/10.1007/BF01594087
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DOI: https://doi.org/10.1007/BF01594087