大转矩下风机膜片联轴器结构参数优化设计  

Optimization design of structural parameters of fan diaphragm coupling under the high torque

作　　者：孙佳欣 蔡安文 胡伟辉 杜静[1] 孙伟玮 秦中正 SUN Jiaxin;CAI Anwen;HU Weihui;DU Jing;SUN Weiwei;QIN Zhongzheng(State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400030,China;Zhuzhou Times New Material Technology Co.,Ltd.,Zhuzhou 412007,China)

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]株洲时代新材科技股份有限公司,株洲412007

出　　处：《机械传动》2025年第2期154-160,共7页Journal of Mechanical Transmission

基　　金：技术创新与应用发展重点项目(CSTB2022TLAD-KPX0046)。

摘　　要：【目的】现有膜片联轴器的研究主要集中在不同膜片类型的膜片联轴器力学性能表现以及通过多种优化算法对膜片进行尺寸形状优化,针对大转矩、大变形工况下膜片结构参数对联轴器力学性能影响的研究较少,因此,通过有限元分析软件Abaqus建立了风机联轴器参数化模型,用以探究大转矩、大变形下风机膜片联轴器非线性结构的力学性能表现。【方法】分析了风机联轴器全局模型有限元应力结果验证仿真结果的可靠性;在此基础上,研究不同膜片腰型结构参数和多膜片组下膜片的各向刚度和应力特性,得到实际复合工况下腰型结构参数和膜片层数的最优组合;并基于该组合模型进行膜片结构多目标形状优化。【结果】随着膜片组层数和膜片腰型结构参数增加,膜片的各向刚度不断增加。膜片组层数和等效应力成反比,膜片腰型结构参数和等效应力成反比。通过增加膜片应力集中位置厚度可以有效减小最大等效应力、分散应力集中现象以及提高结构刚度。[Objective]The existing research on diaphragm couplings mainly focuses on the mechanical performance of different types of diaphragm couplings and the optimization of diaphragm size and shape through various optimization algorithms.There is relatively little research on the influence of diaphragm structural parameters on the mechanical performance of couplings under high torque and large deformation conditions.Therefore,a parameterized model of fan couplings was established through finite element analysis software Abaqus to explore the mechanical performance of nonlinear structures of fan diaphragm couplings under high torque and large deformation conditions.[Methods]The reliability of the simulation results was verified by analyzing the finite element stress results of the global model of the fan coupling.On this basis,different parameters of the waist structure of the membrane and the anisotropic stiffness and stress characteristics of the membrane under multiple membrane groups were studied,and the optimal combination of waist structure parameters and membrane layers under actual composite working conditions was obtained.And based on this combination model,multi-objective shape optimization of membrane structure was carried out.[Results]As the number of layers in the membrane group and the parameters of the membrane waist structure increase,the isotropic stiffness of the membrane continues to increase.The number of layers in the membrane group is inversely proportional to the equivalent stress,and the parameters of the membrane waist structure are inversely proportional to the equivalent stress.By increasing the thickness of the stress concentration location on the membrane,it is possible to effectively reduce the maximum equivalent stress,disperse stress concentration phenomena,and improve structural stiffness.

关 键 词：风机膜片联轴器 有限元法 刚度 等效应力 形状优化 

分 类 号：TH133.4[机械工程—机械制造及自动化]