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基于ANSYS的汽车横向稳定杆固定端螺杆断裂问题的分析

发表时间:2015-07-31  浏览量:1351  下载量:488
全部作者: 李晓宇,黄康
作者单位: 合肥工业大学机械与汽车工程学院
摘 要: 针对某型号汽车横向稳定杆固定端螺杆出现的断裂现象,利用ANSYS有限元分析软件,建立了由螺杆端部、螺母及垫片所组成装配体的有限元模型。为了分析垫片形式对于螺杆断裂问题的影响,分别建立了圆弧垫片和平垫片下的有限元模型。通过静力计算得知,圆弧垫片的使用在提高预紧力的同时也会使螺杆的受力增大。此外,螺杆实际断裂位置出现在螺纹根部,因此根据螺纹的分布变化建立不同的有限元模型。通过对不同螺纹分布形式下螺杆的有限元静力分析,确定了螺纹分布形式对螺杆断裂现象的影响程度,并针对螺杆提出了一种改进的螺纹布置方案。
关 键 词: 车辆工程;断裂;螺杆;ANSYS;垫片;螺纹
Title: Analysis of a screw crack problem in stabilizer bar based on ANSYS
Author: LI Xiaoyu, HUANG Kang
Organization: School of Mechanical and Automotive Engineering, Hefei University of Technology
Abstract: Aiming to solve the problem of the crack of a screw in stabilizer bar of one kind of automobile, finite element models of assembly composed of the screw end, nut and shim is established based on ANSYS. Two finite element models with circular shim and flat shim are built for the comparison to get the effects of the shim on screw crack. The static calculation results show that the use of circular shim will increase the stess of the screw while improve the pre-tightening force. Besides, the crack position is at the bottom of the thread part, different models are built according to the distributions of thread. The finite element static calculation of the screw based on the distribution of thread confirms the degree of the influences of screw thread distribution on crack, which leads to two new solutions which are put forward to improve the screw thread distribution.
Key words: vehicle engineering; crack; screw; ANSYS; shim; thread
发表期数: 2015年7月第14期
引用格式: 李晓宇,黄康. 基于ANSYS的汽车横向稳定杆固定端螺杆断裂问题的分析[J]. 中国科技论文在线精品论文,2015,8(14):1497-1502.
 
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