摘要：本文的主要目标是使用ANSYS有限元软件研究在风荷载作用下垂直轴风力发电机组(Vertical-axis wind turbine, VAWT)主轴在旋转状态下的风致动力疲劳问题。首先，在频域内，研究在脉动风作用下机组旋转主轴(转速为15.5m/s) 三个关键位置处的风动力响应特性。然后，基于机组旋转主轴风动力响应的计算与分析，对机组旋转主轴进行风致动力疲劳分析，计算其疲劳寿命耗用系数，以评价该机组旋转主轴的工作状况。

Abstract The main objective of the present paper is to investigate the wind-induced dynamic fatigue of main-shaft in the vertical-axis wind turbines (VAWT) under the rotation with resorting to the ANSYS code. Firstly, the dynamic responses in three critical positions of main-shaft in the current vertical-axis are analyzed in the case of including the rotation and wind loads into consideration. Based on the investigations on the dynamic responses, the wind-induced dynamic fatigue of main-shaft in the current VAWT under the rotation is then studied, so as to determine the fatigue life usage coefficient and evaluate the working requirements of the main-shaft in the current VAWT.