轴孔位置误差对风机齿轮箱行星轮均载及寿命影响分析

发布时间：2018-01-01 20:04

本文关键词：轴孔位置误差对风机齿轮箱行星轮均载及寿命影响分析　出处：《清华大学》2015年硕士论文　论文类型：学位论文

【摘要】：行星轮的制造误差的存在不仅严重破坏行星轮运行时的均载特性,还对行星轮系各零部件的疲劳寿命及可靠性带来极大影响。在多种制造误差当中,行星架轴孔位置误差是对行星轮的功率流动和均载特性影响最大的误差形式之一,会严重改变行星轮的动态特性和疲劳特性。轴孔位置误差对行星轮的均载和寿命之间的关联性是风机齿轮箱高可靠性设计的核心部分,本文将以风机齿轮箱的行星轮系为研究对象,开展行星架的轴孔位置误差对风机齿轮箱行星轮均载特性及寿命影响的研究。本文以1.5MW风机齿轮箱行星轮系为主要研究对象,进行了行星架的轴孔位置误差对风机齿轮箱行星轮系均载影响的理论分析,为了确定风机行星轮系的动力学特性及功率流动机理,基于齿轮动力学数学模型和风机行星轮结构特性,建立了1.5MW风机齿轮箱行星轮的动力学及功率流模型,明确了轴孔位置误差对行星轮系均载影响机理和失效关键零件。根据现存的行星轮动力学建模方法,搭建了1.5MW风机的行星轮动力学仿真模型,进行轴孔位置误差对均载特性影响的仿真分析。基于多体动力学仿真软件MSC.ADAMS,搭建了轴孔位置误差对行星轮均载影响研究的虚拟平台,得到了轴孔位置度误差对行星轮的均载系数影响的结果,获得了失效关键零件的载荷谱,为后继的寿命分析打下了基础。基于不同的位置误差形式对均载的影响结果与有限元方法,使用非线性有限元软件Abaqus搭建了行星轮轴承的有限元仿真分析平台,进行了多种轴孔位置误差对行星轮及轴承应力分布与寿命影响的分析,得出了失效关键零件的应力应变结果。并基于Roessle和Fatemi理论与硬度直接法,建立了齿轮内表面与轴承的应变寿命曲线,获得了失效关键零件的失效位置与失效时间,评估失效关键零件的寿命。最后,通过某风电齿轮箱公司的1.5MW齿轮箱的失效案例对上述研究进行了实例解释。
[Abstract]:The presence of the planetary gear manufacturing error is not only serious damage to the planet wheel running the load characteristics, has a great impact on planetary gear parts of the fatigue life and reliability. In a variety of manufacturing errors, the planetary frame axle hole position error is the power of the planetary wheel flow and load sharing characteristics of the maximum error form, will seriously alter the dynamic characteristics and fatigue properties of planetary gear. The relationship between shaft hole position error of the planetary wheel are load and life is the core part of wind turbine gearbox design for high reliability, this paper will take the fan gear box planetary gear train as the research object, study on the shaft hole of the planet carrier to carry out the position error the wind turbine gearbox planetary wheel load characteristics and service life influence. Based on the 1.5MW wind turbine gearbox planetary gear train as the main research object, the shaft hole position error of the planet carrier of the wind turbine gearbox line Analysis of influence of star system theory, in order to determine the dynamic characteristics of wind turbine and power flow gear planetary gear train mechanism, mathematical model and wind turbine planetary gear structure characteristics based on the established dynamics and power 1.5MW fan planetary gear flow model, the shaft hole position error are loading effects on planetary gear train the failure mechanism and the key parts of the planetary gear dynamics modeling. According to the existing methods, build a planetary dynamics simulation model of 1.5MW wind turbine, shaft hole position error analysis for simulation of the load sharing effect. The multi-body dynamics simulation software based on MSC.ADAMS platform, builds a virtual shaft hole position error of the planetary wheel load were studied the influence of the shaft hole position error of the planetary wheel load sharing coefficient results, obtained the load failure of the key parts of the spectrum, laid the foundation for the subsequent analysis of life The different forms of foundation. The position error impact on the results and the finite element method based on finite element simulation of planetary wheel bearing structures using nonlinear finite element software Abaqus analysis platform, a variety of shaft hole position error of the planetary wheel bearing and analysis of stress distribution and life influence, get the stress and strain the results of the failure of key parts. And based on Roessle and Fatemi theory and the hardness of the direct method, established the strain life curve and surface of bearing gear within the obtained position of key parts and failure failure failure time, failure assessment of key parts of life. Finally, through the 1.5MW gear box, a wind power gear box's failure case examples to explain the research.

【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH132.41

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