风力发电机主轴轴承等效寿命模型相似准则研究

Study on similarity criterion of equivalent life model of wind turbine main shaft bearing

为节约试验成本的同时又保证准确合理地研究风力发电机主轴轴承的可靠性性能,提出了针对尺寸等比例缩小模型进行寿命试验的相似准则。首先阐明了应用相似理论求解相似准则并进行仿真验证的流程方法;其次,基于风电主轴轴承的寿命影响因素与轴承寿命试验的条件参数等物理量运用量纲分析法得到等效寿命模型的相似准则;最后,通过ABAQUS软件和FE-SAFE软件对线接触单滚子模型的有限元仿真验证了相似准则的正确性。

In order to save test costs while ensuring accurate and reasonable research on the reliability performance of wind turbine main shaft bearings,this paper proposes a similar criterion for life test based on scaled-down models.Firstly,this article clarifies the process method of applying similarity theory to solve similarity criterion and conduct simulation verification;secondly,based on physical quantities such as the life influencing factors of wind turbine main shaft bearing and the condition parameters of bearing life test,the similarity criterion of equivalent life model is obtained by dimensional analysis;Finally,the finite element simulation of the linear contact single roller model by ABAQUS software and FE-SAFE software verifies the correctness of the similar criteria.