An estimator for the standard deviation of a natural frequency. I.A brief review of mean-square approximate systems is given. The case in which the masses are deterministic is considered first in the derivation of an estimator for the upper bound of the standard deviation of a natural frequency. Two examples presented include a two-degree-of-freedom system and a case in which the disorder in the springs is perfectly correlated. For purposes of comparison, a Monte Carlo simulation was done on a digital computer.
Schiff, A. J.
Bogdanoff, J. L. (Purdue University Lafayette, Ind., United States)