大型运载火箭发射平台法兰结合面摩擦系数正交试验研究
黎定仕，贾永涛，平仕良，张国栋，王飞
（北京航天发射技术研究所，北京 100076）
摘要：大型运载火箭发射平台主承载结构通过法兰连接，法兰面摩擦系数影响法兰切向承载强度。法兰面摩擦系数受到表面粗糙度、表面处理方式及涂层状态的影响。采用混合水平正交试验法开展摩擦系数试验研究，通过直观分析与方差分析研究三种因素对摩擦系数的影响。分析表明，表面涂层对静摩擦系数的影响最大，法兰面涂覆无机富锌漆或环氧富锌漆能有效提高摩擦系数，表面粗糙度和表面处理方式对摩擦系数影响不显著。并对通过正交试验法优选的方案进行试验验证，试验分析表明最优方案能够达到较大静摩擦系数。
关键词：法兰；摩擦系数；正交试验；方差分析
中图分类号：TH117.1 文献标志码：A doi：10.3969/j.issn.1006-0316.2017.09.005
文章编号：1006－0316 (2017) 09－0016－05
Friction Coefficient Study on Flange Interface of Large Launch Vehicle Launching Platform Based on Orthogonal Test
LI Dingshi，JIA Yongtao，PING Shiliang，ZHANG Guodong，WANG Fei
( Beijing Institute of Space Launch Technology, Beijing 100076, China )
Abstract：The main load-bearing structure of the large launch vehicle launching platform is connected by flange. The flange coefficient of friction affects tangential load strength of the flange. The friction coefficient of the flange surface is affected by the surface roughness, the surface treatment method and the coating state. The friction coefficient test was carried out by using the mixed level orthogonal test method. The influence of the three factors on the friction coefficient was studied by intuitive analysis and variance analysis. The results show that the surface coating has the greatest influence on the static friction coefficient, and the inorganic zinc-rich paint or epoxy zinc-rich paint can effectively improve the friction coefficient. The surface roughness and the surface treatment have no significant effect on the friction coefficient. The experimental results show that the optimal scheme can reach the larger static friction coefficient.
Key words：flange；friction coefficient；orthogonal test；variance analysis
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收稿日期：2017－02－14
作者简介：黎定仕（1982－），男，湖南临澧人，博士，高工，主要研究方向为运载火箭发射装置。
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