题 目；风力机塔架疲劳寿命分析 摘要....................................................................................................................................................3第一章 概述.......................................................................................................................................71.1 课题研究的背景及意义......................................................................................................71.1.1 风电行业发展现状.................................................................................................71.1.2 风力机简介.............................................................................................................81.1.3 风力机塔架简介........................................................................................................91.2 风力机塔架疲劳寿命分析的意义.....................................................................................101.3 国内外研究现状.................................................................................................................111.3.1 国外研究风力机塔架的现状..................................................................................111.3.2 国内研究风力机塔架的现状..................................................................................121.4 本论文所做的工作.............................................................................................................12第二章 风力发电机组结构及其分析理论.....................................................................................132.1 风力发电机组的结构及其关键部件.............................................................................132.2 有限单元法理论...............................................................................................................142.2.1 有限元法简介.......................................................................................................142.2.2 有限元的基本理论.................................
