基于Abaqus的篦齿封严中的衬套碰磨数值研究  

Numerical Research on Contact Behavior of Liners in Labyrinth Seal Based on Abaqus

作　　者：王志雄 赵凯 史永运 于向财 迟雅琴 WANG Zhixiong;ZHAO Kai;SHI Yongyun;YU Xiangcai;CHI Yaqin(Aviation Foundation College,Naval Aeronautical University,Yantai 264001,China)

机构地区：[1]海军航空大学航空基础学院,山东烟台264001

出　　处：《机械制造与自动化》2025年第2期186-191,214,共7页Machine Building & Automation

摘　　要：航空发动机运行中,篦齿封严与衬套易发生碰撞以及磨损,造成衬套变形。为获得碰磨后封严衬套形貌参数及碰磨过程中温度、接触力变化情况,使用基于有限元法的Abaqus软件,以钢-铜摩擦副为例,重点分析篦齿封严在不同转速和入侵速度下碰磨过程中最大接触力、表面温度以及型面变化。结果表明:使用材料失效模型计算碰磨后衬套型面变化的方法是可行的,可为计算碰磨后性能退化提供理论基础;在转速为2500 r/min下,入侵速度从100 mm/s降至25 mm/s,碰撞过程中最大法向接触力减小35%;在相同入侵速度下,转速增大会导致封严碰磨中温度升高,接触力降低。The labyrinth seal fins often rub with liners during operation causing liner deformation.In order to obtain morphology parameters of the sealing after rubbing and the temperature,contact force during rubbing process,with steel-copper friction pair being taken as example,the commercial software Abaqus based on the finite element method is used to analyze the maximum contact force,surface temperature and morphology changes of the liners during rubbing process at different rotation speed and invasion speed.The results show that the method of using the material failure model to calculate the change of liners profile after rub is feasible,which can provide a theoretical basis for calculating the performance degradation.At rotation speed of 2500 r/min,the maximum normal contact force is reduced by 35%in the condition of incursion speed reduced from 100 mm/s to 25 mm/s.At the same intrusion speed,the increase in rotation speed will lead to an increase in temperature and a decrease in contact force.

关 键 词：航空发动机 篦齿封严 碰磨 摩擦温度 最大接触力 型面 

分 类 号：V231.91[航空宇航科学与技术—航空宇航推进理论与工程]