Abstract Stick-slip affects torque-preload relationship during bolted joint tightening process. Its occurrence is not always possible to avoid and it can lead to an unreliable joint. In this study, tightening process was investigated and, in a first approach, modeled through theoretical analysis. In a second approach, experimental data was explored statistically using Analysis of Variance (ANOVA) and F-Test. Coefficient of global friction and stick-slip parameters were modeled and added to the first model. The final semi-empirical model was able to reproduce the variation of the friction and to predict stick-slip occurrence. Low errors were obtained in the comparison with experimental data for both cases, with and without the occurrence of stick-slip. The proposed semi-empirical model provides mathematical approach for accurately predicting stick-slip and its characteristics in a specific condition of bolt-nut surface treatment.

中文翻译：

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螺栓连接紧固过程中的粘滑建模

摘要 粘滑影响螺栓连接紧固过程中的扭矩-预紧力关系。它的发生并不总是可以避免的，并且可能导致不可靠的接头。在这项研究中，对拧紧过程进行了调查，并在第一种方法中通过理论分析建模。在第二种方法中，使用方差分析 (ANOVA) 和 F 检验对实验数据进行统计探索。全局摩擦系数和粘滑参数被建模并添加到第一个模型中。最终的半经验模型能够再现摩擦力的变化并预测粘滑的发生。在与两种情况下的实验数据进行比较时，无论是否发生粘滑，都获得了较低的误差。