Bolted joints are the most common type of mechanical connections, and improving the anti-loosening performance of bolts for the reliable performance of mechanical and building structures is highly significant.,Because of the lack of sufficient theoretical basis for the evaluation and design of anti-loosening bolts, a quantitative evaluation model exhibiting the following two evaluation criteria for anti-loosening bolts is introduced: bolt rotation angular acceleration criterion and critical transverse load criterion. Based on the relationship among bolt tension, transverse load and bolt rotation angular acceleration, a critical transverse load calculation model is put forward, and the mechanism by which the critical transverse load increases with the increase of bolt tension is revealed.,Based on the above model, a new type of anti-loosening bolt is designed, which generates additional bolt tension when the transverse load increases, and then improves the critical transverse load of the bolt. The effectiveness of the new type of anti-loosening bolt is verified by theoretical calculations and experiments.,The proposed model and method set a preliminary theoretical foundation for the evaluation of bolt anti-loosening performance and the design of a new anti-loosening bolt.

中文翻译：

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螺栓接头滑移松动机理及定量评价模型

螺栓连接是最常见的机械连接类型，提高螺栓的抗松性能对于机械和建筑结构的可靠性能具有非常重要的意义。,由于缺乏足够的理论依据进行抗震评估和设计。针对螺栓松动，提出了一种定量评价模型，该模型体现了螺栓抗松动的两个评价标准：螺栓旋转角加速度标准和临界横向载荷标准。基于螺栓张力、横向载荷与螺栓旋转角加速度之间的关系，提出了临界横向载荷计算模型，揭​​示了临界横向载荷随螺栓张力的增加而增加的机理。模型，设计了一种新型的防松螺栓，当横向载荷增加时产生额外的螺栓张力，进而提高螺栓的临界横向载荷。通过理论计算和实验验证了新型防松螺栓的有效性。所提出的模型和方法为螺栓抗松性能的评价和新型防松螺栓的设计奠定了初步的理论基础。