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

doi:10.19936/j.cnki.2096-8000.20230828.001

Abstract

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

CLC Number:

TB332

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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