建筑钢结构进展2024，Vol.26Issue(3)：41-51,11.DOI:10.13969/j.cnki.cn31-1893.2024.03.005
轴向荷载作用下小规格拉铆钉和普通螺栓疲劳性能对比研究
Comparison of the Fatigue Performance Between Small-Sized Rivets and Ordinary Bolts Under Axial Load
摘要
Abstract
Rivets are widely used in aerospace,rail transit,bridge construction and other fields due to their excellent anti-loosening,anti-fatigue and anti-corrosion properties and strong environmental adaptability.In order to solve the fatigue problem of bolt connection in photovoltaic support,the axial fatigue performance of a new domestic rivet is studied to replace the ordinary bolt connection to improve the fatigue life of photovoltaic support.In this paper,the static test and fatigue test of LMY8 and LMY10 small-sized rivets and ordinary bolts of the same specification under axial load were carried out.The riveting process was simulated by using ABAQUS software,and the fatigue life of rivet was simulated by using FE-Safe software.The results show that the fatigue performance of rivet is better than that of ordinary bolt under the same conditions.The fatigue fracture of the rivet under axial load is located at the first ring thread of the sleeve ring and the locking ring groove,where the stress concentration is the main reason for the fatigue failure of the rivet.The fatigue life of rivet can increase with the increase of minimum load and decrease with the increase of maximum load.It can be seen from the fatigue contour diagram that when the rivet is subjected to axial cyclic load,a large stress will also be generated at the R-angle transition below the rivet head,and this area is also prone to fatigue failure.关键词
小规格拉铆钉/普通螺栓/轴向荷载/疲劳寿命/铆接过程/应力集中Key words
small-sized rivet/ordinary bolt/axial load/fatigue life/riveting process/stress concentration分类
建筑与水利引用本文复制引用
杨俊芬,焦瑞婕,钟炜辉,李立和,苗广威,贾云龙..轴向荷载作用下小规格拉铆钉和普通螺栓疲劳性能对比研究[J].建筑钢结构进展,2024,26(3):41-51,11.基金项目
陕西省自然科学基础研究计划面上项目(2022JM-308),陕西省教育厅服务地方专项科研计划项目(21JC019),中国中车集团有限公司重点项目(2020CKB055) （2022JM-308）
