Mechanical analysis of interference fit force of thin-walled structure

The metal end cap is assembled by interference fit with composite cylinder which is thin-walled cylindrical shell structure, and the interference fit surface of the end cap and the cylinder is a thin wall structure. It is necessary that the end cap and the cylinder are fitted in place and at the same time the parts can't be damaged by the interference fit compression force, so an appropriate interference fit compression force should be applied according to the different magnitude of interference. Through the way of finite element analysis and theoretical calculation, the compression force when assembly is in place is the minimum compression force, and the minimum axial pressure which will cause cylinder instability is the maximum compression force. In this paper, a calculation method of interference fit force of thin-walled structure is established that play a guiding role in the actual assembly. (authors)