基于应力—强度干涉理论的齿轮传动可靠性研究
[Abstract]:Gear transmission is widely used in all kinds of mechanical devices, and its dynamic performance is very important to the normal operation of mechanical equipment. In order to meet the requirements of low noise, long life and high reliability, it is necessary to study the influence of random factors in the design, manufacture, installation and operation of gear transmission system. Under the assumption that the random parameters conform to a certain distribution function, the influence of the randomness of the parameters on the dynamic characteristics and transmission reliability of the system is studied. However, few literatures based on interval number method have considered the influence of random parameters such as manufacturing error, installation error, load fluctuation and shape modification deviation on gear dynamics, and the reliability of gear transmission under the above random parameters has not been evaluated. In view of this, this paper takes spur cylindrical gear as the research object, through establishing the dynamic model of gear system with random parameters, analyzes the influence of random parameters in gear transmission on the dynamic behavior of the system. On this basis, the reliability of gear transmission under random parameter condition is analyzed by using the stress-strength interference theory, and compared with the simulation results of Monte Carlo method. The main contents of this paper are as follows: 1. Taking the spur gear transmission system as an example, on the basis of parameter tuning of random factors such as gear manufacturing error, installation error, shape modification deviation and load fluctuation, etc. The dynamic model of spur gear transmission system with random parameters is established by means of lumped parameter method, and the differential equation of motion of this kind of transmission system is derived. This work provides a model basis for solving the dynamic response of gear system with interval parameters, the influence analysis of random parameters and the calculation of transmission reliability. The Chebyshev expansion function method and the fourth order variable step Runge-Kutta method are used to solve the differential equations of motion of the spur gear system with interval parameters to obtain the dynamic response of the system. On this basis, the influence of random parameters such as installation error, pitch deviation, tooth shape deviation, load fluctuation and modification deviation on the dynamic characteristics of spur gear transmission system is analyzed. The results show that the influence of gear mounting error range on the dynamic characteristics is the biggest, the load fluctuation is the second, the gear pitch deviation is the second, and the tooth profile deviation and modification deviation have the least effect on the dynamic characteristics. 3. Taking the dynamic transmission error of gear, the bending fatigue strength of tooth root and the contact fatigue strength of tooth surface as reliability indexes, the reliability of gear transmission is analyzed by using the theory of stress-strength interference. The results are compared with the simulation results of Monte Carlo method. The results show that the variation of random parameters has the greatest influence on the accuracy reliability of gear transmission, the second on the bending fatigue strength of tooth root, and the least on the reliability of tooth surface contact fatigue strength.
【学位授予单位】:安徽工业大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TH132.41
【参考文献】
相关期刊论文 前10条
1 孙tD;张建国;王丕东;彭文胜;;基于广义退化的机械结构模糊时变可靠性分析[J];北京航空航天大学学报;2016年08期
2 魏莎;韩勤锴;褚福磊;;含区间参数的齿轮系统扭振固有特性研究[J];振动与冲击;2015年10期
3 郭凡;张俊;;计入行星架柔性的行星传动啮合特性分析及修形可靠性研究[J];机械传动;2014年09期
4 段文峰;;基于响应面法的齿轮断裂非概率可靠性分析[J];煤矿机械;2014年05期
5 王靖岳;郭立新;张亮;王浩天;;齿轮传动系统随机振动模型与仿真[J];东北大学学报(自然科学版);2013年04期
6 姜潮;黄新萍;韩旭;白影春;;含区间不确定性的结构时变可靠度分析方法[J];机械工程学报;2013年10期
7 魏永祥;陈建军;马洪波;;随机参数齿轮系统的非线性动力响应分析[J];工程力学;2012年11期
8 陈会涛;秦大同;吴晓铃;周志刚;杨军;;考虑随机制造误差的风力机行星齿轮系统动力学特性[J];机械工程学报;2012年21期
9 魏静;孙清朝;孙伟;秦大同;朱才朝;朱万刚;郭爱贵;;高速机车牵引齿轮传动系统动态特性及非线性因素影响研究[J];振动与冲击;2012年17期
10 ;风电安全监管报告2011年(一)[J];太阳能;2011年24期
相关会议论文 前1条
1 唐飞熊;秦大同;陈亮;;风电齿轮箱随机输入载荷的处理方法[A];2010年重庆市机械工程学会学术年会论文集[C];2010年
相关博士学位论文 前1条
1 陈霞;直齿锥齿轮修形方法研究[D];华中科技大学;2006年
相关硕士学位论文 前3条
1 唐飞熊;兆瓦级风力发电机齿轮传动系统的动力学特性和可靠性研究[D];重庆大学;2011年
2 宋少芳;齿轮副非线性动力学模型的建立与分析[D];吉林大学;2007年
3 刘梦军;单对齿轮系统间隙非线性动力学研究[D];西北工业大学;2002年
,本文编号:2338660
本文链接:https://www.wllwen.com/jixiegongchenglunwen/2338660.html