CFRP螺栓连接力和温度耦合力学性能研究

doi:10.19936/j.cnki.2096-8000.20230628.017

摘要/Abstract

摘要： 本文对碳纤维复合材料(CFRP)螺栓连接在不同温度环境(常温、低温),不同连接方式(单钉双剪连接、双钉并排双剪连接),不同拧紧力矩(2 N·m、4 N·m、6 N·m)三个变量条件下的复合材料螺栓连接试件进行静载拉伸实验,探究力、温度及连接方式对螺栓连接构件的静载拉伸性能的影响。结果表明:其他实验条件相同时,双钉连接方式的试件抗拉伸强度明显提升;适当增加拧紧力矩可以有效提高螺栓连接强度;低温环境下试件抗拉伸强度略有提升。

关键词: CFRP, 螺栓连接, 拧紧力矩, 低温环境, 拉伸强度

Abstract: In this paper, tensile tests of carbon fiber composite material (CFRP) bolted specimens with different connection modes (single screw double shear connection, double screw double shear connection), different tightening torques (2 N·m, 4 N·m, 6 N·m) and different temperature environments (normal temperature and low temperature) were carried out under static load. The effects of force, temperature and connection mode on the static tensile properties of bolted connected components were investigated. The results show that under the same experimental conditions, the tensile strength of the specimens with double screw connection is significantly improved. Properly increasing tightening torque can effectively improve bolt connection strength; the tensile strength of specimens was slightly improved under low temperature.

Key words: CFRP, bolt connection, tightening torques, low-temperature environments, tensile strength

中图分类号:

TB332

王伟龙. CFRP螺栓连接力和温度耦合力学性能研究[J]. 复合材料科学与工程, 2023, 0(6): 120-127.

WANG Weilong. Research on coupled mechanical properties of CFRP bolted connection force and temperature[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(6): 120-127.

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