Numeric Simulation on Spiral Flexure Spring Stiffness Influence Factors of Stirling Cryocooler

摘要

Stirling cryocooler becomes a research focus all over the world, because of its high efficiency, compact structure and low cost. Spiral flexure spring is a key component of stirling cryocooler, whose structure design, material selection and mechanical performance of is an important problem now. By means of in-depth study of spiral flexure spring of stirling cryocooler, the force model is established by finite element method, which is necessary to study its stiffness characteristics and analyze the influence factors. Then, spring stiffness theory model is established, which can prove simulation is correct. The method in the study is feasible and effective, which can be used to other type spring stiffness research. It also provides theoretical and engineering basis for design and analysis of s Stirling cryocooler spiral flexure spring.