Abstract
I order to estimate the useful life of a panel with intermediate supports, such as the exterior skin of a hypersonic airplane wing, it is necessary to know its time dependent deflection behavior under compressive loads at high temperature. This requirement also could apply to a stiffened panel with stiffeners resting on the considerably more rigid interior skin. There are a number of studies concerning the creep problem of plates. They are based on either initially imperfect plates or initially perfect ones. In this study, because of the more realistic nature of the problem, the panel is assumed to have an initial imperfection. A time increment method is used similar to the one used in Ref. 1. Finally, a relationship between the useful life of the panel and the time of deceleration is pointed out and suggested as a possible criterion for the creep allowable time.
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