基于ANSYS的风力发电机机舱底盘的强度分析

机舱底盘是风力发电机的重要组成部分，它的结构是否合理将直接影响着整个风力发电机的平稳运行.机舱底盘不但支撑着主轴轴承座、增速箱、发电机等大部件，而且还受到周围空气对它的气动推力和阻力的影响.针对这个问题，采用ANSYS有限元分析软件计算了机舱底盘的静强度，根据计算结果进行了强度校核，满足了材料的强度要求.为了减小应力集中，提出了改进意见，在最大应力出现的地方适当加厚筋板，可使整体应力分布更加均匀，并且为以后的设计提供了科学依据.

Strength analysis of wind turbine nacelle chassis based on ANSYS

Nacelle chassis is an important part of a wind turbine, and its structure affects the stable operation of wind turbine. Nacelle chassis not only supports the principal shaft bearing seat, gear box and generator, but also is influenced by both pneumatic thrust and resistance from around air. The static strength of nacelle chassis was calculated by ANSYS finite element analysis software. The strength was checked up and satisfied with the demand of material strength. To reduce the stress concentration, the improvement advice was presented. To add the board thickness at maximal stress place makes the whole stress more symmetrical, which provides scientific basis for the future design.