Natural frequencies of a multi‐degree‐of‐freedom vibration system
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A chain structured mass-spring vibration system with N degrees of freedom is considered where massesMj = mjm = m/j and spring stiffnesses kj = cjk = (N + 1 - j)k, j = 1, …, N, have been applied. The conjecture of Mikota [1] on the natural frequencies is discussed showing how difficult it is to find an explicit solution of the related eigenvalue problem. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)