Abstract
A method for indirect measurement of vibration stress of thin cylindrical shell (TCS) was proposed in this study. Firstly, TCS's vibration stress and response under different base excitation amplitudes were calculated by harmonic response analysis method. Subsequently the relationship between the vibration stress and response of TCS was established, so that indirect measurement principle of vibration stress was clarified. Secondly, the procedure of indirectly measuring TCS's vibration stress was proposed, and its key steps, such as the determination of Rayleigh damping and modification of finite element model of TCS through the experimental results were explained in details. Finally, practicability and accuracy of this indirect method was demonstrated by a study case. The results showed that indirect measurement results of vibration stress had good agreements with actual experimental results, which can provide a new idea for obtaining TCS's vibration stress.
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