This work investigates the response of initially uniform temperature, long, unconstrained, thin-walled, circular cylinders to a constant and uniform lateral thermal flux. The results are used to study the response of such cylinders to a time-varying thermal radiation delivery. The particular response variables studied are those of temperature, axial elongation, lateral deflection, and stress. Time histories of these are obtained in a dimensionless form. For the case of an energy delivery which is characteristic of a nuclear weapon burst, these responses are computed and presented for the full range of dimensionless parameter tmax, this being the ratio of a characteristic time of thermal flux delivery to a natural time of heat diffusion around a cylinder of interest.

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