The Mechanics Analysis of Desquamation for Thermal Protection System (TPS) Tiles of Spacecraft

On the basis of solid mechanics,the "Peeling off " problem of TPS tiles on space craft surface is investigated.After considering the existence of peeling stress along the interface between the TPS tiles and the frame of space shuttle,a new model of mechanics is established to satisfy the boundary conditions of shear stress,which cannot be satisfied by the traditional shear-lag model.According to these new solutions,the reasonable explanation can be made about the failure of glued joint for TPS tiles.The stress distributions are studied when TPS tiles working in high temperature condition have different length,thickness,and material,and some advices can be provided to the design of TPS tiles.