不同载荷作用下膜片厚度对风电联轴器性能的影响

Effect of Diaphragm Thickness on Performance of Wind Turbine Couplings Under Different Loads

为研究膜片厚度对风电联轴器传递转矩及不对中补偿性能的影响,建立了联轴器整体有限元模型,得到了转矩、轴向位移及角位移载荷共同作用下的膜片应力云图,结合膜片实际破坏位置,验证了有限元仿真分析的可行性;给出了不同载荷作用下各膜片厚度的应力响应,分析了不同载荷对各厚度膜片应力的影响程度,探讨了不同厚度下膜片组螺栓预紧力及接触摩擦因数对联轴器性能的影响。结果表明,膜片厚度的增加能够提高联轴器传递转矩能力,但会削弱其不对中补偿能力;各载荷对不同厚度膜片应力影响的主导程度不同,膜片厚度为3 mm时的联轴器综合性能最强;螺栓预紧力对联轴器性能的影响很大,而膜片间的接触摩擦因数对联轴器性能的影响较小。

In order to study the influence of diaphragm thickness on the torque transmission and misalignment compensation performance of wind turbine couplings,the overall finite element model of the coupling was established,the stress nephogram under the combined action of torque,axial displacement and angular displacement load was obtained,and the feasibility of the finite element simulation analysis was verified by combining with the actual broken position of the diaphragm.The stress response of each diaphragm thickness under different loads was given,the influence of different loads on the stress of each diaphragm thickness was analyzed,and the influence of preload force and contact friction coefficient on the performance of the coupling was discussed.The results show that the increase of diaphragm thickness can improve the torque transmission capacity of the coupling,but will weaken its misalignment compensation capacity.The influence of different loads on the stresses of different diaphragm thicknesses is different,and the comprehensive performance of the coupling is the strongest when the diaphragm thickness is 3 mm.The influence of bolt preload on the performance of the coupling is great,while the influence of contact friction coefficient between diaphragms on the performance of the coupling is smaller.