Based on the mechanical property test on the thin wall metal cylinder filled with polyurethane foam,the effects of polyurethane foam filling in the wall metal cylinder are studied.

Accurate design and analysis on thin liner in fixture of liquidity plastic;

This paper is based on the example of processing the tire of pump stock's hole on coal mining machine,simply relates the course of design and machinery analysis about the mechanism,discusses the circumstance of force stress and deformation in detail in theory about thin liner in clamping of liquidity plastic and elastic centering.

In this paper, mechanics of thin plates and shells is used in the field of the evaporation cooling technology for the first time.