用于地铁门的变导程螺旋副疲劳寿命分析
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摘要
变导程螺旋副是利用一个滚子及导程变化来实现螺旋传动,容易发生疲劳破坏,需要进行疲劳寿命分析。首先分析出变导程螺旋传动的疲劳形式为接触疲劳。同时,分析滚子和丝杆的接触应力,确定滚子所受接触应力明显大于丝杆,可通过分析滚子寿命以验证螺旋副的可靠性。通过分析接触疲劳寿命的相关理论,给出载荷谱及应力-寿命曲线的计算方法,针对地铁门的特点,分析出变导程螺旋副的寿命,确认了地铁门可靠性。并对不同受力作用下的寿命进行分析,为地铁门维护保养周期的确定提供了必要的依据。
The variable lead spiral pair uses only one roller and lead change to realize the screw transmission, which is prone to fatigue damage and requires fatigue life analysis. Firstly, the fatigue form of the variable lead screw drive is analyzed as contact fatigue. At the same time, the contact stress between the roller and the screw is analyzed to determine that the contact stress of the roller is significantly larger than that of the screw. The reliability of the screw pair can be verified by analyzing the life of the roller. By analyzing the relevant theory of contact fatigue life, the calculation method of load spectrum and stress-life curve is given. According to the characteristics of subway gate, the life of variable lead spiral pair is analyzed, and the reliability of subway door is confirmed. The analysis of the life under different stresses provides the necessary basis for the determination of the subway door maintenance cycle.
The variable lead spiral pair uses only one roller and lead change to realize the screw transmission, which is prone to fatigue damage and requires fatigue life analysis. Firstly, the fatigue form of the variable lead screw drive is analyzed as contact fatigue. At the same time, the contact stress between the roller and the screw is analyzed to determine that the contact stress of the roller is significantly larger than that of the screw. The reliability of the screw pair can be verified by analyzing the life of the roller. By analyzing the relevant theory of contact fatigue life, the calculation method of load spectrum and stress-life curve is given. According to the characteristics of subway gate, the life of variable lead spiral pair is analyzed, and the reliability of subway door is confirmed. The analysis of the life under different stresses provides the necessary basis for the determination of the subway door maintenance cycle.
引文
[1]张本涛,何非,李东波,等.面向地铁门变导程螺旋副机构的设计[J].机械设计与研究,2016,32(5):5-9.
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[10]曲先强,石德新,崔洪斌,等.高强度钢随机载荷下裂纹扩展模型[J].哈尔滨工程大学学报,2007(2):133-136.
[11]姜成杰.大型水陆两栖飞机起落架疲劳寿命分析及优化设计研究[D].南京:南京航空航天大学,2014.
[12]陆琼晔,张瑞华.滚珠丝杠的模态与疲劳寿命分析[J].现代制工造程,2015(1):98-101.
[13]陈小芬,李东波,史翔.滚子螺旋传动中滚子与丝杠之间相对滑动的机制研究[J].机床与液压,2013,41(9):54-57.
[14]唐利芹,叶福民,单怡超,等.变导程螺旋线及其展开图研究[J].机械设计与制造工程,2007,36(19):139-142.
[15]刘莉昕,高迎宪.变螺距螺旋线的设计方法[J].包装与食品机械,1998(6):10-12.
[2]BOLD P E,BROWN M W,ALLEN R J.Shear mode crack growth and rolling contactfatigue[J].Wear,1991,144(1/2):307-317.
[3]KAPOOR A.A re-evaluation of the life to rupture of ductile metals by cyclic plasticstrain[J].Fatigue&Fracture of Engineering Materials&Structures,1994,17(2):201-219.
[4]GROHMANN H D,HEMPELMANN K,GROβ-THEBING A.Anew type of RCF experimental investigations and theoretical modelling[J].Wear,2002,253(1):67-74.
[5]RINGSBERG J W.Life prediction of rolling contact fatigue crack initiation[J].International Journal of Fatigue,2001,23(7):575-586.
[6]EKBERG A,BJARNEHED H,LUNDBAN R.A fatigue life model for general rolling contact with application to wheel/rail damage[J].Fatigue&Fracture of Engineering Materials&Structures,2010,18(10):1189-1199.
[7]FLAKER J,FAJDIGA G,GLODES,et al.Numerical simulation of surface pitting due to contact loading[J].International Journal of Fatigue,2001,23(7):599-605.
[8]BOGDANSKI S,OLZAK M,STUPNICKI J.Numerical stress analysis of rail rolling contact fatigue cracks[J].Wear,1996,191(1):14-24.
[9]石凯凯,蔡力勋,包陈.预测疲劳裂纹扩展的多种理论模型研究[J].机械工程学报,2014,50(18):50-58.
[10]曲先强,石德新,崔洪斌,等.高强度钢随机载荷下裂纹扩展模型[J].哈尔滨工程大学学报,2007(2):133-136.
[11]姜成杰.大型水陆两栖飞机起落架疲劳寿命分析及优化设计研究[D].南京:南京航空航天大学,2014.
[12]陆琼晔,张瑞华.滚珠丝杠的模态与疲劳寿命分析[J].现代制工造程,2015(1):98-101.
[13]陈小芬,李东波,史翔.滚子螺旋传动中滚子与丝杠之间相对滑动的机制研究[J].机床与液压,2013,41(9):54-57.
[14]唐利芹,叶福民,单怡超,等.变导程螺旋线及其展开图研究[J].机械设计与制造工程,2007,36(19):139-142.
[15]刘莉昕,高迎宪.变螺距螺旋线的设计方法[J].包装与食品机械,1998(6):10-12.