剪切螺栓群配合间隙概率分布研究 -- 西北工业大学学报,2015,33(5):794-798
论文:2015,Vol:33,Issue(5):794-798
引用本文:
冯蕴雯, 刘思宏, 薛小锋. 剪切螺栓群配合间隙概率分布研究[J]. 西北工业大学学报
Feng Yunwen, Liu Sihong, Xue Xiaofeng. Research on Fit Clearance Probability Distribution of Shear Bolt Group[J]. Northwestern polytechnical university

剪切螺栓群配合间隙概率分布研究
冯蕴雯, 刘思宏, 薛小锋
西北工业大学 航空学院, 陕西 西安 710072
摘要:
工程结构采用螺栓群连接时,通常螺栓与孔之间存在一定的栓孔间隙。在考虑连接孔位置度和外载荷方向的前提下,提出了在某一给定载荷传递方向上单个螺栓连接情况下栓孔最小间隙概率分布的计算方法;借助概率统计中的贝努利试验原理,提出了螺栓群中k个螺栓数量组合情况时的栓孔间隙概率计算方法。以某大型客机风挡玻璃螺栓群为例,应用Monte-Carlo抽样法,计算了单个螺栓连接的间隙分布概率,以及螺栓群配合间隙满足一定概率要求所对应的螺栓数量。
关键词:    螺栓群    栓孔间隙    位置度    载荷方向    概率分布   
Research on Fit Clearance Probability Distribution of Shear Bolt Group
Feng Yunwen, Liu Sihong, Xue Xiaofeng
College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
When connecting engineering structures using bolt group, usually there is a certain bolt-hole clearance. On the precondition of considering the positional tolerance of the connecting hole and the direction of the external load, the calculation method of the probability distribution of the minimum bolt-hole clearance in a given load transferring direction is put forward for the single bolt connection. Referring to Bernoulli trial principle in probability and statistics study, we propose the calculation method of the probability distribution of bolt-hole clearance is proposed for a bolt group with different number of bolts. Taking the windshield bolt group in an airliner as an example, and using Monte-Carlo sampling method, we calculate distribution probability of the bolt-hole clearance in the single bolt connection. And based on the result, for the bolt group, the probability distribution of bolt-hole clearance and the number of bolts in the bolt group catering to the certain probability request is calculated.
Key words:    bolts    Monte-Carlo methods    probability distributions    probability    reliability analysis   
收稿日期: 2015-04-17     修回日期:
DOI:
基金项目: 国家自然科学基金(10577015)与航空科学基金(2008ZA53006、2006ZD53050)资助
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作者简介: 冯蕴雯(1968—),女,西北工业大学教授、博士生导师,主要从事飞机结构设计与分析研究。
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