摘要
螺栓紧固件在工程中得到广泛应用,其扭矩系数反映了在拧紧过程中预紧力与扭矩之间的关系.目前螺栓扭矩系数的研究大多集中于圆环端面螺栓,对于其他端面类型螺栓的研究相对较少.通过受力分析,建立了六角端面六角头螺栓的力学模型.利用圆环端面扭矩的计算公式,推导出六角端面六角头螺栓预紧力与扭矩的关系,并给出扭矩系数的精确计算公式.然后采用拧紧试验机对不同尺寸螺栓的扭矩系数进行实验测量,将理论结果与实测结果相比较,结果表明,理论结果与实验结果相吻合.
Bolts are widely used in engineering,and the torque coefficient reflects the relationship between preload and torque during the tightening process.At present,most of the researches on bolt torque coefficients focus on circular end,and relatively few researches on the others.The mechanical model of hexagon head bolt with hexagon end is established by force analysis.Using the calculation formula of torsional torque with circular end,the relationship between pre-tightening force and torque of hexagon head bolt with hexagon end is deduced,and the exact calculation formula of torque coefficient is given.Then the torque coefficients of bolts with different sizes are measured by tightening testing machine and the theoretical results are compared with the measured results.The results show the theoretical results are consistent with the experimental results.
作者
刘盛循
张大平
邓小伟
余征跃
LIU Shengxun;ZHANG Daping;DENG Xiaowei;YU Zhengyue(School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Centre Testing International Zhike Co., Ltd., Shanghai 201114, China)
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2020年第3期262-266,共5页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目(11772188)
国家标准计划项目(20180762-T-605)。
关键词
六角头螺栓
六角端面六角头螺栓
理论计算
扭矩系数
hexagon head bolt
hexagon head bolt with hexagon end
theoretical calculation
torque coefficient
