The thermal-vibration coupling nonlinear fatigue life prediction of the space shuttle antenna

摘要

Considering the severe vibrations and harsh temperature changes in space crafts' launching and landing processes, this paper presents a novel thermal-vibration coupling nonlinear fatigue life prediction model. Focusing on the effect of temperature in the fatigue residual strength degradation, the modified Corten-Dolan model is proposed to describe the cumulative damage under the thermal-vibration coupling. The simulation indicates that the proposed model is more accurate as compared to traditional methods.