冲击载荷下材料松动期内螺栓松动影响因素研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (22) : 35-40.

论文

王开平，张明远，闫明，王鹏，苏东海

作者信息 +

Factors affecting bolt loosening during material loosening period under impact loading

WANG Kaiping，ZHANG Mingyuan，YAN Ming，WANG Peng，SU Donghai

Author information +

文章历史 +

摘要

螺栓松动过程分为两个阶段：材料松动期和结构松动期，其中材料松动期内的松动主要是由塑性变形引起的。为研究冲击载荷下材料松动期内螺栓松动影响因素，首先建立了精确的螺栓联接模型，然后运用Yamamoto方法和Sopwith方法验证了模型的有效性，最后进行有限元仿真分析，研究了冲击载荷下材料松动期内冲击载荷幅值、初始预紧力、螺纹啮合面间摩擦系数、螺纹初始间隙对螺栓松动的影响规律。结果表明：在材料松动期内冲击载荷幅值越小、螺纹初始间隙越小，螺栓松动越不容易发生；存在一个初始预紧力值或者范围，也存在一个螺纹啮合面间摩擦系数值或范围，使螺栓松动最不容易发生。

Abstract

The loosening process of bolts is divided into two stages: material loosening period and structural loosening period.Looseness during material loosening period is mainly caused by plastic deformation.In order to study the factors affecting the bolt looseness during the loosening of material under impact load, an accurate bolting model was established.Then the Yamamoto method and Sopwith method were used to verify the validity of the model.Finally, a finite element simulation analysis was carried out to study the influences of the impact load magnitude, the initial pre-tightening force, the friction coefficient between the threaded mating surfaces and the initial gap of thread on the bolt loosening during material loosening period under impact load.The results show that the smaller the impact load magnitude and the smaller the initial gap of thread during loosening period, the less likely the bolt looseness will occur; there is an initial preload value or range, and there is also a friction coefficient value or range between the thread meshing surfaces to make the bolt loose the least likely to happen.

导出引用

王开平，张明远，闫明，王鹏，苏东海. 冲击载荷下材料松动期内螺栓松动影响因素研究[J]. 振动与冲击, 2020, 39(22): 35-40

WANG Kaiping，ZHANG Mingyuan，YAN Ming，WANG Peng，SU Donghai. Factors affecting bolt loosening during material loosening period under impact loading[J]. Journal of Vibration and Shock, 2020, 39(22): 35-40

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