复合材料干涉连接结构多界面夹紧力有限元分析

段元欣; 樊芊; 张开富; 刘平

doi:10.13433/j.cnki.1003-8728.2015.0425

复合材料干涉连接结构多界面夹紧力有限元分析

doi: 10.13433/j.cnki.1003-8728.2015.0425

段元欣¹,
樊芊²,
张开富^1, ,,
刘平¹

1.
西北工业大学现代设计与集成制造技术教育部重点实验室, 西安 710072;
2.
中航工业西安航空计算技术研究所, 西安 710068

基金项目:

国家商用飞机制造工程技术研究中心创新基金项目（SAMC13-JS-15-029）与国家自然科学基金项目（51305349）资助

详细信息

作者简介:
段元欣（1987-），博士研究生，研究方向为先进装配与连接技术，dmoxun@163.com

通讯作者:
张开富，教授，博士生导师，zhangkf@nwpu.edu.cn，029-88493303

计量
- 文章访问数: 172
- HTML全文浏览量: 42
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2014-03-01
- 刊出日期: 2015-04-05

FEM Analysis of Clamping Force at Multi-interfaces with Interference-fit for Composite Joints

1.
The Ministry of Education Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Xi'an 710072;
2.
Xi'an Aeronautics Computing Technique Research Institute AVIC, Xi'an 710068

摘要

摘要: 建立了碳纤维增强复合材料（CFRP）的单搭接螺栓连接结构三维模型，在充分考虑材料属性及接触关系的基础上，进行了干涉配合状态下孔周应力状态和夹紧力分布的数值模拟与分析。结果表明：在预紧力沿模型板厚方向的传递过程中，螺栓与孔壁接触界面的摩擦力会直接抵消部分作用力，导致自螺母端至螺栓钉头端夹紧力逐渐降低，降低的幅度与速率受到预紧力大小和孔周应力状态的影响。
- 干涉配合 /
- 夹紧力 /
- 螺栓连接 /
- 有限元分析
Abstract: A bolted composite joint with interference-fit is conducted to analyze the stress state and the clamping force with a three-dimensional, solid finite element model. A full definition of the material properties and the contact pairs is implemented. It is shown that the transfer of the clamping load, which is created by the process of bolt tightening, will be affected by the friction significantly. Along the direction of plate thickness, the clamping force reduces from the bottom of the plate to the bolt head. The descending magnitude of clamping force is decided by the number of the bolt load and stress state in the vicinity of the fastener hole.
- interference-fit /
- clamping force /
- bolted joints /
- finite element analysis

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参考文献(17)

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