垂直度误差影响复合材料层合板层间应力分析

刘学术; 杨宇星; 鲍永杰; 高航; 李汝鹏

doi:10.13433/j.cnki.1003-8728.2018.0121

垂直度误差影响复合材料层合板层间应力分析

doi: 10.13433/j.cnki.1003-8728.2018.0121

1.
大连理工大学汽车工程学院, 大连 116023;
2.
大连理工大学机械工程学院, 大连 116023;
3.
上海飞机制造有限公司, 上海 200120

基金项目:

国家重点基础研究发展计划项目（2014CB046504）与国家自然科学基金项目（51375068，51475073）资助

详细信息

作者简介:
刘学术(1977-),副教授,博士,研究方向为复合材料装配连接、复杂曲面建模,liuxs@dlut.edu.cn

计量
- 文章访问数: 143
- HTML全文浏览量: 20
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2016-07-11
- 刊出日期: 2018-01-15

Effect of Hole Perpendicularity Error on Inter-laminar Stress of CFRP

1.
School of Automotive Engineering, Dalian University of Technology, Dalian 116023, China;
2.
School of Mechanical Engineering, Dalian University of Technology, Dalian 116023, China;
3.
Shanghai Aircraft Manufacturing Co. Ltd., Shanghai 200120, China

摘要

摘要: 采用有限元仿真的方法分析了连接孔垂直度误差对连接区层间应力的影响规律，基于层间失效准则对垂直度误差影响接力学性能进行了预测并试验验证。结果表明：垂直度误差影响螺栓与连接件之间的接触关系，造成连接区应力分布不均匀；螺栓在带有垂直度误差的连接孔中预紧时会发生位姿调整，其中以螺栓杆挤压孔壁为主；层间剪应力随垂直度误差的增加而增大，是造成分层失效的主要原因；适当提高螺栓预紧力有利于缓解垂直度误差带来的不良影响。
- 复合材料 /
- 螺栓连接 /
- 分层 /
- 垂直度误差 /
- 层间应力
Abstract: The effects of the hole-perpendicularity error on the inter-laminar stress and the mechanical performance of the joint are investigated. It is found that the stress distribution around the hole is heavily affected by the mentioned error. The bolt's posture may adjust when it is fastened in a bolt hole with perpendicularity error, during which the bolt shank bearing the hole wall plays an important role. Moreover, the inter-laminar shear stress increases with the increasing of hole perpendicularity error, which is the main reason for inducing delamination failure. Finally, to increase the fastening torque can help to reduce the negative effects caused by hole perpendicularity error, which was proved by the experimental results.
- composite material /
- bolted joint /
- delamination /
- perpendicularity error /
- inter-laminar stress

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参考文献(19)

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