风电机组轴承座轻量化设计

Lightweight design of wind turbine bearing pedestal

为满足大兆瓦风电机组质量轻、效率高的要求,对某风电机组铸造轴承座进行轻量化优化设计。基于TOSCA软件的拓扑优化得到轴承座最优材料分布,利用Sculptor软件和Isight软件进行参数优化,得到变形控制因子对轴承座性能的影响,采用有限元法对优化后的轴承座进行校核,确保最终设计的轴承座满足强度和疲劳要求。在同等载荷条件下,轻量化设计后的轴承座较原始模型减重幅度达到26%,且优化后的轴承座外形简洁,有利于铸造和加工。

To meet the requirements of light weight and high efficiency of large MW wind turbine,the lightweight optimization design of cast bearing pedestal of a wind turbine is carried out.Based on the topology optimization of TOSCA software,the optimal material distribution of the bearing pedestal is obtained.The parameters are optimized using sculptor software and Isight software,and then the influence of deformation control factor on the performance of bearing pedestal is obtained.The optimized bearing pedestal is checked using finite element method,which can ensure that the final designed bearing pedestal meets the strength and fatigue requirements.Under the same load conditions,the weight reduction of the bearing pedestal after lightweight design reaches 26%compared with the original model.The optimized bearing pedestal has a simple shape,which is conducive to casting and processing.