弯压耦合作用下的复合材料预紧力齿连接力学性能研究

doi:10.19936/j.cnki.2096-8000.20230828.001

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (8): 5-13.DOI: 10.19936/j.cnki.2096-8000.20230828.001

• 基础研究 • 下一篇

弯压耦合作用下的复合材料预紧力齿连接力学性能研究

李飞¹, 高训鹏^1*, 赵启林², 王正兴², 施霖¹

1.重庆交通大学土木工程学院,重庆 400074;
2.南京工业大学机械与动力工程学院,南京 211816

收稿日期:2022-05-30 出版日期:2023-08-28 发布日期:2023-10-20
通讯作者: 高训鹏(1996—),男,硕士研究生,从事复合材料结构与连接方面的研究,528198134@qq.com。
作者简介:李飞(1983—),男,副教授,博士,从事轻量化结构与复合材料工艺方面的研究。
基金资助:
国家自然科学基金(52008390);重庆市科技局技术创新重点项目(2022-JMRH1)

Study on mechanical properties of composite pre-tightening tooth connection under bending-compression coupling

LI Fei¹, GAO Xunpeng^1*, ZHAO Qilin², WANG Zhengxing², SHI Lin¹

1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
2. School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 211816, China

Received:2022-05-30 Online:2023-08-28 Published:2023-10-20

摘要/Abstract

摘要： 研究表明预紧力齿连接接头在结构中不仅会受到轴力的作用,还会同时受到弯矩的作用,但现阶段尚未对复合材料预紧力齿连接在弯矩和轴力耦合作用下的力学性能展开研究。本文首先对复合材料预紧力齿连接在弯压耦合作用下的试验方法进行了研究,通过液压千斤顶和万能试验机实现了接头在弯压荷载作用下的加载;其次分别对接头进行了轴压、纯弯以及弯压耦合试验,得到了接头在不同荷载下的传力机理。研究表明:在弯压耦合作用下,接头的作用效果可以近似地看作是相应荷载下纯弯与轴压线性叠加的结果;弯矩的存在会在很大程度上影响接头的力学性能,因此在对接头进行设计时要充分考虑弯矩对接头承载力的影响。

关键词: 复合材料, 预紧力齿连接, 力学性能, 弯压耦合

Abstract: Studies have shown that the pre-tightening force tooth connection joint in the structure will not only be affected by the axial force, but also be affected by the bending moment at the same time. However, at this stage, the mechanical properties of composite pre-tightening force tooth connection under the coupling effect of bending moment and axial force have not been studied. In this paper, the test method of composite pre-tightening force tooth connection under bending-compression coupling is studied, and the loading of the joint under bending-compression load is realized by hydraulic jack and universal testing machine. Secondly, axial compression, pure bending and bending-compression coupling tests were carried out on the joint, and the force transmission mechanism of the joint under different loads was obtained. The results show that the effect of the joint under bending-compression coupling can be approximately regarded as the linear superposition of pure bending and axial compression under corresponding loads. The existence of bending moment will greatly affect the mechanical properties of joints, so the influence of bending moment on the bearing capacity of joints should be fully considered in the design of joints.

Key words: composite materials, pre-tightening force tooth connection, mechanical properties, bending-pressure coupling

中图分类号:

TB332

李飞, 高训鹏, 赵启林, 王正兴, 施霖. 弯压耦合作用下的复合材料预紧力齿连接力学性能研究[J]. 复合材料科学与工程, 2023, 0(8): 5-13.

LI Fei, GAO Xunpeng, ZHAO Qilin, WANG Zhengxing, SHI Lin. Study on mechanical properties of composite pre-tightening tooth connection under bending-compression coupling[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(8): 5-13.

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弯压耦合作用下的复合材料预紧力齿连接力学性能研究

Study on mechanical properties of composite pre-tightening tooth connection under bending-compression coupling

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