无摩擦气缸活塞的结构变形分析

针对超低频悬挂装置刚体往复运动的无摩擦要求，设计了一套新颖的无摩擦气缸一活塞结构。建立了无摩擦气 缸一活塞应力计算模型，得到气缸和活塞结构应力计算公式。利用ANSYS Workhench建立无摩擦气缸一活塞的气膜仿真 计算模型，计算得到气膜沿活塞轴向的压力分布情况，利用单向流固耦合模块将气膜压力加载到无摩擦气缸一活塞上，基 于线性静力结构分析模块Static Structural计算无摩擦气缸一活塞应力和应变分布，对结果做出分析，对无摩擦气缸一活塞 结构不合理之处提出了解决方案。

Structural Deformation Analysis of Frictionless Cylinder-Piston

For rigid body frictionless requirements of ultra-low frequency suspension reciprocating motion, an innovative frictionless cylinder-piston structure was presented. A stress calculation model of frictionless cylinder -piston was built. The stress calculation formula of cylinder and piston structure was made. A frictionless cylinder-piston of the air film modal was established by ANSYS Workbench. Air film pressure distribution along the axial piston was appeared after calculation. and the pressure was loaded into the frictionless cylinder piston by the fluid-structure coupling module. Stress and strain distribution of the results was obtained by linear static structure analysis module-Static Structural calculation. The results were analyzed, and solutions were put forward for unreasonable place of frictionless cylinder- piston structure.