汇流环金属丝-环芯瞬态响应研究
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摘要
以某滑动式汇流环的主要结构-金属丝-环芯摩擦副为研究对象,利用有限元法对其进行瞬态动力学分析,考察结构在冲击载荷作用下的瞬态响应,研究转速和冲击载荷大小对其瞬态响应的影响。研究结果表明:金属丝-环芯摩擦副结构在载荷作用下的最大等效应力位于金属丝与环芯的接触部位,其值仍小于材料许用应力。随着冲击载荷数值的增大,结构瞬态响应最大峰值会随之增大,在现有转速条件下,随着环芯转动速度的增加,其瞬态响应最大峰值反而会降低。
Taking the main structure of a slip ring, electric brush-ring core friction pair, as the research object, the transient dynamic analysis of the friction pair was carried out by using finite element method. The transient response of the structure under impact load was investigated, and the influence of rotational speed and impact load on its transient response was studied. The results show that the maximum equivalent stress of electric brush-ring core friction pair structure under load is located at the contact area between electric brush and ring core, and its value is still less than the allowable stress of material. With the increase of the impact load, the maximum peak value of the transient response of the structure will increase. Under the existing rotational speed conditions, the maximum peak value of the transient response will decrease with the increase of the core rotational speed.
Taking the main structure of a slip ring, electric brush-ring core friction pair, as the research object, the transient dynamic analysis of the friction pair was carried out by using finite element method. The transient response of the structure under impact load was investigated, and the influence of rotational speed and impact load on its transient response was studied. The results show that the maximum equivalent stress of electric brush-ring core friction pair structure under load is located at the contact area between electric brush and ring core, and its value is still less than the allowable stress of material. With the increase of the impact load, the maximum peak value of the transient response of the structure will increase. Under the existing rotational speed conditions, the maximum peak value of the transient response will decrease with the increase of the core rotational speed.
引文
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[2]杨金川,田茂君,姚智慧,等. 滚动汇流环装配力学特性分析与优化设计[J]. 工程设计学报,2016,23(4):364-370.
[3]唐征明,刘现星,孙海军,等. 浮动核电站应急柴油发电机组基座抗冲击分析[J]. 舰船科学技术,2018,40(11):93-97.
[4]韦洲,张晓光,马振哲. 基于有限元的旋压铝合金轮毂13°冲击分析[J]. 铸造技术,2018,39(11):2608-2610.
[5]高健翔,高建和,龚俊杰,等. 基于瞬态动力学的数控转塔冲床床身动力学研究[J]. 机械工程与自动化,2017(1):74-76.
[6]马春生,李俊帅,李瑞琴,等. 一种新型汇流环装置的接触应力与动态特性分析[J]. 机械设计与制造,2017(7):74-77.
[7]刘文科,郑传荣,赵克俊,等. 某雷达汇流环主要电性能参数分析[J]. 火控雷达技术,2015,44(4):81-83.
[8]邓书山,赵克俊,康成彬,等. 汇流环关键材料选用探讨[J]. 电工材料,2014(1):39-42.
[9]常健,赵克俊,郑传荣,等. 浅谈电刷-导电环摩擦副使用寿命的影响因素[J]. 火控雷达技术,2014,43(1):101-104.
[10]薛萍,陈少兵,刘丽. 电滑环中的导电环和电刷[J]. 光纤与电缆及其应用技术,2012(1):11-13,25.
[11]程兵,于兰峰,符康,等. 地坑式架车机托头接触问题的有限元分析[J]. 铁道科学与工程学报,2017,14(2):364-369.