This study investigates the optimal design of simple structures subjected to dynamic loads, with constraints on the structures' re¬sponses. Previous studies have mainly dealt with static loads, and their methodology has been extended here to time dependent cases. The contributions of this work are in the formulation and satisfaction of the complicated dynamic constraints and in the insights gained into the nature of these problems.nThree separate analyses search for the optimal design of:(1) one-dimensional structures excited by harmonically oscillating loads, (2) similar structures excited by white noise and (3) a wing in the pre¬sence of continuous atmospheric turbulence. The first problem has con¬straints on the maximum allowable stress while the last two place bounds on the probability of failure of the structure.
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