基于ABAQUS的抛送叶轮应力应变研究

Stress-Strain Analysis of Throwing Impeller Based on ABAQUS

为研究叶片式抛送装置主要承载部件抛送叶轮运转的安全性,基于有限元分析软件ABAQUS采用流固耦合方法对抛送叶轮进行应力及应变研究,其中抛送装置内三维流场计算运用CFD(Computational Fluid Dynamics)软件Fluent,获得了装置内气流场对叶轮压力的分布规律。在此基础上,分析了叶轮转速及叶片数对其应力及应变的影响。结果表明:叶轮最大变形量为0.015mm,符合刚度要求;最大等效应力为32MP,始终出现在叶片与加强版连接边缘处靠近圆盘一侧,且强度满足要求;叶轮转速越高,应力、应变越大;5叶片和3叶片叶轮的最大应力、应变比较接近,且较4叶片叶轮的应力及应变值小。

In order to analyze the security？capabilities of throwing impeller which is the main bearing assembly unit of the impeller blowers,based on finite element analysis software ABAQUS,stress and strain analysis calculation by using fluidstructure interaction was carried out,and three-dimensional simulation in an impeller blower parameters was performed by using CFD（computational fluid dynamics）software FLUENT,and the basic characteristics about the air field were gained. And on this basis the effect of impeller speed and the number of blades on its stress and strain was analyzed. It is concluded that：（1）Maximum deformation is 0.015 mm,which is in line with stiffness requirements;Maximum stress is 32 MP,located at the connection of blade and enhanced version and near to the edge of disc,and meets the strength requirements.（2）The impeller speed higher,the stress and strain greater;maximum stress and strain of 5 blade impeller is closed to 3 blade impeller,which is smaller than 4 blade impeller.