红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2015年
1期
188-194
,共7页
刘祥意%张景旭%陈宇东%吴小霞%李剑锋%郝亮
劉祥意%張景旭%陳宇東%吳小霞%李劍鋒%郝亮
류상의%장경욱%진우동%오소하%리검봉%학량
柔性金属膜片%液压支撑%定位导向%优化
柔性金屬膜片%液壓支撐%定位導嚮%優化
유성금속막편%액압지탱%정위도향%우화
flexible metal membrane%hydraulic support%positioning guide%optimization
在大口径望远镜主镜液压支撑形式中,液压缸需要一种简单可靠、不需要润滑维护的精密导向机构,而且可以输出较大行程范围(毫米级)。设计了一种柔性金属膜片机构用于液压缸的径向定位导向。建立了金属膜片机构有限元模型,采用几何非线性算法,研究分析了不同拓扑结构对金属膜片柔度的影响,通过不同拓扑结构金属膜片的性能分析对比可知,V型膜片能够很好地克服应力刚化,保证柔度的稳定性;以柔度为优化目标,对金属膜片V型的位置尺寸和形状尺寸进行了优化设计,金属膜片在导向方向上的柔度提高了14.2%;搭建了柔性金属膜片机构柔度测试平台,验证了仿真计算结果。结合实验和仿真结果可知:V型柔性金属膜片具有良好的定位导向性能,对用于液压支撑的液压缸和主动光学的微位移促动器的导向机构的设计具有指导意义。
在大口徑望遠鏡主鏡液壓支撐形式中,液壓缸需要一種簡單可靠、不需要潤滑維護的精密導嚮機構,而且可以輸齣較大行程範圍(毫米級)。設計瞭一種柔性金屬膜片機構用于液壓缸的徑嚮定位導嚮。建立瞭金屬膜片機構有限元模型,採用幾何非線性算法,研究分析瞭不同拓撲結構對金屬膜片柔度的影響,通過不同拓撲結構金屬膜片的性能分析對比可知,V型膜片能夠很好地剋服應力剛化,保證柔度的穩定性;以柔度為優化目標,對金屬膜片V型的位置呎吋和形狀呎吋進行瞭優化設計,金屬膜片在導嚮方嚮上的柔度提高瞭14.2%;搭建瞭柔性金屬膜片機構柔度測試平檯,驗證瞭倣真計算結果。結閤實驗和倣真結果可知:V型柔性金屬膜片具有良好的定位導嚮性能,對用于液壓支撐的液壓缸和主動光學的微位移促動器的導嚮機構的設計具有指導意義。
재대구경망원경주경액압지탱형식중,액압항수요일충간단가고、불수요윤활유호적정밀도향궤구,이차가이수출교대행정범위(호미급)。설계료일충유성금속막편궤구용우액압항적경향정위도향。건립료금속막편궤구유한원모형,채용궤하비선성산법,연구분석료불동탁복결구대금속막편유도적영향,통과불동탁복결구금속막편적성능분석대비가지,V형막편능구흔호지극복응력강화,보증유도적은정성;이유도위우화목표,대금속막편V형적위치척촌화형상척촌진행료우화설계,금속막편재도향방향상적유도제고료14.2%;탑건료유성금속막편궤구유도측시평태,험증료방진계산결과。결합실험화방진결과가지:V형유성금속막편구유량호적정위도향성능,대용우액압지탱적액압항화주동광학적미위이촉동기적도향궤구적설계구유지도의의。
For large-aperture primary mirror hydraulic support system, a simple and reliable precision guiding mechanism is needed to give a larger stroke range (mm) for cylinders, which did not require lubrication and maintenance. In this paper, a flexible metal membrane was designed for the cylinder guiding and radial positioning. With the method of finite elements and nonlinear geometry algorithms adopted, an analysis was carried on the flexible membrane with different topologies, it was shown that V- shape metal membrane could well overcome stress stiffening and maintain the stability of flexibility;with flexibility as the optimization target, optimize the V- shape position and geometry dimensions of membrane V- shape, and the guiding flexibility of metal membrane was improved by 14.2%; established the experimental platform, did experiments and verify the simulation results. According to the experiment and simulation results, the V- shape membrane is found not only having a good flexibility in the vertical surface direction, but also ensuring the stability of flexibility by avoiding stress stiffening. These founds give a certain guidance in the design and application of the guiding mechanism for hydraulic support cylinders and active micro-displacement actuator.