摘要
基于Ansys软件,提出了一种适用于高锁螺栓过盈配合连接件的螺栓预紧力准确模拟施加方法。考虑螺栓过盈配合、螺栓预紧力等特征,对飞机典型连接件的三维有限元弹塑性模型进行了建立。计算了不同板间摩擦下连接件危险部位的最大等效应力,并通过分析连接件上2个点应变值的变化规律,得出最大等效应力变化的原因。结果表明,最大等效应力随板间摩擦因数的增加,呈现先减小再增大的趋势,且为连接件板间的摩擦力传载和连接件上下板两自由端外翘综合作用的结果。该分析计算结果可为此类连接件的有限元分析和耐久性设计提供参考。
Based on the ANSYS software, this paper puts forward an accurate simulation method of applying the bolt pre tightening force to the interference fit joints of high locked bolt. By considering the boh interference fitting, the bolt pre-tightening force, etc, the 3D finite element elastic-plastic model of the aircraft typical joint was established. The effect of the different plate friction on the maximum yon raises of the dangerous part of the joint was calculated, and the variation law of the two points strain value was analyzed, then it was concluded the reason why the maximum von raises of the dangerous part of the joint changed. The resuh shows that with the increase of the coefficient of friction between plates, the maximum von mises presents the first decrease then increase. And this is due to the friction force between the plates on the load transfer and the upper and the lower free end of the joint tilted outward. The results of the analysis can provide reference for the finite element analysis and durability design of such joints.
作者
张胜
何宇廷
李昌范
陈涛
张浩宇
谭翔飞
ZHANG Sheng HE YuTing LI ChangFan CHEN Tao ZHANG HaoYu TAN XiangFei(Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi＇ an 710038, China)
出处
《机械强度》
CAS
CSCD
北大核心
2016年第5期1103-1107,共5页
Journal of Mechanical Strength
基金
国家自然科学基金项目(51475470
51505495)资助~~
关键词
连接件
板间摩擦
预紧力
有限元分析
Joint
Friction between the plates
Pre-tightening force
Finite element analysis
