文档介绍：风电机组主轴轴承结构强度分析
重庆大学硕士学位论文
(专业学位)
学生姓名:候海臣
指导教师:杜静教授
学位类别:工程硕士(机械工程领域)
重庆大学机械工程学院
二 O 一三年五月
Structure Strength Analysis of Wind Turbine
Main Shaft Bearing
A Thesis Submitted to Chongqing University
in Partial Fulfillment of the Requirement for the
Master’s Degree of Engineering
By
Hou Haichen
Supervised by Prof. Du Jing
Specialty: ME (Mechanical Engineering Field)
College of Mechanical Engineering of
Chongqing University,Chongqing,China
May 2013
中文摘要
摘要
风电机组主轴轴承结构及受力复杂,设计质量好坏直接影响着风电机组的可靠
性、安全性及发电效率。论文以德国船级社风力发电机组认证规范及欧洲规范为
依据,结合现代设计理论及分析方法,采用非线性有限元方法,对某 MW 级风力
发电机组主轴轴承进行分析,研究成果为主轴轴承的设计提供参考,具有工程实
用价值。
论文主要研究内容如下:
①详细介绍了包括主轴系统的支撑类型、主轴轴承的结构作用,介绍了轴承
强度计算接触理论,为后续的有限元分析奠定了基础。
②用 GAP 单元对双列调心滚子轴承进行建模,建立了主轴系统的有限元模
型,进行了极限工况下的静强度和变形分析,为调心轴承建模提供一种有效的方
法。
③对主轴轴承进行了疲劳寿命分析。根据 GL 规范设定主轴轴承的材料 S-N
曲线,同时利用 Bladed 软件仿真得到的疲劳载荷时间历程,结合改进的雨流计数
法得到疲劳载荷谱。基于改进型 Palmgren-Miner 线性累计损伤理论,计算得到主
轴轴承总的疲劳损伤值。为轴承的疲劳寿命分析提供了一种新思路。
关键词:风力发电机组,主轴轴承,GAP 单元,强度,疲劳寿命
I
重庆大学硕士学位论文
II
英文摘要
ABSTRACT
Because of plexity on the bearing structure and loads of the main shaft of
wind turbine, the quality of design has a direct influence on the reliability, safety and
efficiency of the wind turbine. According to the Germanischer Lloyd certification
standards and the European standard of wind turbine, as well as the modern design
theory and analysis method, analysis of the main shaft bearing of a MW class wind
turbine is carried out by the nonlinear finite element method. The research results
provide reference for design of main shaft bearing, and has practical value in
engineering.
Main researches covered in this paper are as follows:
① At first, the basic knowledge of main shaft system was elaborated,Including the
support type, the main shaft bearing’s structure and function. On the basis of the above,
The related theore