基于接触面特征的螺栓联接刚度研究

doi:10.3969/j.issn.1000-1093.2017.01.026

兵工学报 ›› 2017, Vol. 38 ›› Issue (1): 195-201.doi: 10.3969/j.issn.1000-1093.2017.01.026

基于接触面特征的螺栓联接刚度研究

章伊华¹，庞奎²，林丹益¹，麦云飞³，孙晓萌³，杨国玉⁴

（1.宁波大红鹰学院汽车CAE应用技术研究所, 浙江宁波 315175; 2.力帆实业（集团）股份有限公司摩托车研究院，重庆 400700;3.上海理工大学机械工程学院，上海 200093; 4.EASi Engineering, Detroit 48201, MI, US）

收稿日期:2015-11-02 修回日期:2015-11-02 上线日期:2017-03-03
作者简介:章伊华（1962—），男，副研究员。E-mail:zhyh116@163.com
基金资助:
浙江省自然科学基金项目(LY12E05012)

Study of Bolt Joint Stiffness Based on Contact Surface Characteristics

ZHANG Yi-hua¹, PANG Kui², LIN Dan-yi¹, MAI Yun-fei³, SUN Xiao-meng³, YANG Guo-yu⁴

(1.Institute of Automotive CAE Applications, Ningbo Dahongying University, Ningbo 315175， Zhejiang， China; 2.Institute of Motorcycle， Lifan Industry (Group) Co., Ltd., Chongqing 400700; 3.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093， China; 4.EASi Engineering,Detroit 48201, MI, US)

Received:2015-11-02 Revised:2015-11-02 Online:2017-03-03

摘要/Abstract

摘要： 螺栓联接由于其可靠和有效性在工业界得到广泛应用，螺栓联接设计中的联接刚度设计在螺栓联接结构中具有十分重要的作用。提出一种最佳预紧力下螺栓联接结构的有限元分析方法，在综合考虑螺栓螺母与被联接件及被联接件之间的受力、接触、摩擦等非线性因素的基础上，采用不同结构的系列参数模型运算结果进行联接刚度分析，研究了螺栓预紧力、被联接板厚度、螺栓公称直径、被联接板外径及螺母系数等因素对联接刚度的影响。通过接触面压应力分布实验验证和连续性假设，对联接结构刚度函数式进行无量纲化推导，实现了系列参数模型无量纲化刚度数据的有效拟合，在有限元分析结果基础上获得了计算螺栓联接结构联接刚度的计算公式。通过与有限元分析结果及文献［4-6］结果比较，验证了该刚度计算公式的有效性和可靠性。

关键词: 固体力学, 参数模型, 接触面积, 接触面应力分布, 联接刚度, 无量纲化

Abstract: Bolt joint is widely used in industry because of its reliability and effectiveness. The joint stiffness plays a very important role in bolt joint structure. A finite method of bolt joint structures under the optimal preload is proposed. The joint stiffness is analyzed for different structural parameters in consideration of the nonlinear factors,such as of force, contact property and friction. The effects of bolt pretightening force, thickness and external diameter of joint member, and nut parameters on joint stiffness are studied. The dimensionless stiffness function expression is derived through the experimental verification of contact surface compressive stress distribution and the assumption of joint stiffness continuity, and the model dimensionless stiffness data is fit. The formula for calculating bolt joint stiffness is developed based on the results of finite element analysis (FEA). The effectiveness and accuracy of joint stiffness calculation formula is verified by comparing FEA results with those from previous studies. Key

Key words: solidmechanics, parametermodel, contactarea, stressdistributionofcontactsurface, jointstiffness, dimensionless

中图分类号:

章伊华，庞奎，林丹益，麦云飞，孙晓萌，杨国玉. 基于接触面特征的螺栓联接刚度研究[J]. 兵工学报, 2017, 38(1): 195-201.

ZHANG Yi-hua, PANG Kui, LIN Dan-yi, MAI Yun-fei, SUN Xiao-meng, YANG Guo-yu. Study of Bolt Joint Stiffness Based on Contact Surface Characteristics[J]. Acta Armamentarii, 2017, 38(1): 195-201.

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基于接触面特征的螺栓联接刚度研究

Study of Bolt Joint Stiffness Based on Contact Surface Characteristics

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