带有均压槽的环形气浮垫设计  

Design of Annular Floatation Cushion with Pressure-Equalizing Groove

作　　者：孙建辉[1] 钟武强[1] 袁巧玲[1] 单晓杭[1] 周海清 

机构地区：[1]特种装备制造与先进加工技术教育部重点实验室(浙江工业大学),浙江杭州310014 [2]杭州宇测科技公司,浙江杭州310014

出　　处：《轻工机械》2013年第5期80-84,共5页Light Industry Machinery

基　　金：浙江省自然基金资助项目(Y1111137);浙江工业大学特种装备制造与先进加工技术教育部重点实验室开放基金(2009EP01)

摘　　要：针对空间飞行器太阳翼展开地面试验中使用的二维平面滑轨式零重力吊架卸载设备,存在轴承沿导轨运动的摩擦力引起附加的展开力矩问题,设计了带有周向均压槽的高承载力、高刚度环形气浮垫,来代替上述吊挂滑轮车,在水平方向上实现了极低摩擦力,并基于气体的运动方程、质量连续性方程和状态方程,对环形气浮垫进行建模计算其承载力,并用Fluent仿真计算,仿真结果与理论计算基本一致。当吊挂试件的重力在环形气浮垫承载力范围内时,就能在水平方向上实现极低摩擦力展开,从而消除由摩擦力引起的附加展开力矩的影响,最终验证了带有均压槽的环形气浮垫替换方案的可行性。Aiming at the two dimensional plane slide rail type zero gravity hanging bracket unloading equipment used in the ground experiment of space vehicles deployable solar wing, it exists the friction of bearings moving along guide rail which causes the additional deployable moment of force. The high bearing capacity and high stiffness annular floatation cushion with circumferential pressure-equalizing groove was designed. The aforesaid hanging pulley was replaced. The extremely low friction in horizontal direction was realized. The bearing characteristic of annular floatation cushion was modeled and calculated based on equation of motion, quality equation of continuity and equation of state of gas. The simulation computation was calculated by using Fluent software. And the simulation results are mostly identical to the theory. When the gravity of suspended test specimen is within the annular floatation cushion bearing capacity, it can realize extremely low friction in horizontal direction to eliminate effects of additional deployable moment of force which caused by friction and it finally verifies the feasibility of alternative design of annular floatation cushion with pressure equalizing groove.

关 键 词：极低摩擦力 环形气浮垫 均压槽 Fluent软件 

分 类 号：TH138.9[机械工程—机械制造及自动化] V442[航空宇航科学与技术—飞行器设计]