螺纹紧固件咬死失效的热力学分析和试验研究

Zhongwei Zhang, Jianhua Liu, Hao Gong*, Xinjian Deng, Xiaoyu Liu

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

The seizure failure of threaded fasteners is a typical failure form during the tightening process. In view of the lack of thermodynamic model of friction heat generation for the micromorphology on the thread surface in the tightening process which causes the mechanism of seizure failure unclear, and the lack of quantitative evaluation indication of seizure failure, an asperity model was firstly established. Subsequently, the heat accumulation and temperature rise models for the asperity on the thread surface were established based on HERTZ contact theory. The mechanism of seizure failure was revealed theoretically. Then repeated tightening experiments were carried out on threaded fasteners by torsion-tension testing machine to study the variation of various fastening parameters. The indication system for evaluating the seizure failure was proposed, including the tooth fluctuation of the angle-torque curve, and the over 50% increase rate for the torque coefficient and thread friction coefficient. the testing method and indication for quantitatively evaluating the anti-seizure performance of thread fasteners were put forward by recording the tightening times when the seizure failure occurred. The influences of nut material, bolt/nut clearance, surface hardness difference and thread friction coefficient on the anti-seizure performance of threaded fasteners were systematically obtained.

投稿的翻译标题Thermodynamic Analysis and Experimental Study on Seizure Failure of Threaded Fasteners
源语言繁体中文
页(从-至)346-356
页数11
期刊Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
59
10
DOI
出版状态已出版 - 5月 2023

关键词

  • quantitative indication
  • seizure failure
  • thermodynamics
  • threaded fasteners
  • tightening experiment

指纹

探究 '螺纹紧固件咬死失效的热力学分析和试验研究' 的科研主题。它们共同构成独一无二的指纹。

引用此

Zhang, Z., Liu, J., Gong, H., Deng, X., & Liu, X. (2023). 螺纹紧固件咬死失效的热力学分析和试验研究. Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering, 59(10), 346-356. https://doi.org/10.3901/JME.2023.10.346