ABSTRACT

Of interest are two basic effects. First, a static, or quasistatic temperature field will cause a static or quasi-static initial stress field. For example, a local hot spot may introduce static compressive stresses in a shell that will lower natural frequencies. Second, time-varying temperatures act as vibration excitation mechanisms. A sudden heating or cooling (thermal shock) will produce an effect similar to a step load. Feedback between motion and heat transfer my cause oscillations of relatively high frequency, as in the classical case of Chladni figure experimentation, where glass plates are excited by an application of dry ice. Additional information can be obtained, for example, from Johns (1965), Boley and Weiner (1960), Jadeja and Loo (1974), Huang and Tauchert (1992).