高温环境下燕尾榫微动疲劳数值分析  

Numerical Analysis of Fretting Fatigue of Dovetail at Elevated Temperature

作　　者：任蓉 张雄伟 马续强 霍军周[1] REN Rong;ZHANG Xiong-wei;MA Xu-qiang;HUO Jun-zhou(School of Mechanical Engineering,Dalian University of Technology,Liaoning Dalian 116000,China;Sinohydro Engineering Bureau 6 Co.,Ltd.,Liaoning Shenyang 110819,China;China Railway 18th Bureau Group Tunnel Engineering Co.,Ltd.,Chongqing 400000,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116000 [2]中国水利水电第六工程局,辽宁沈阳110819 [3]中铁十八局集团隧道工程有限公司,重庆400000

出　　处：《机械设计与制造》2023年第10期150-154,159,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金(51875076);国家自然科学基金辽宁省联合重点基金(U1708255)。

摘　　要：复杂载荷作用下航空发动机中压气机叶片与轮盘连接处的微动疲劳,极大的降低了发动机的寿命。为更好的探究高温环境下航空发动机燕尾榫构件的微动损伤机理,使用有限元仿真软件ABAQUS对500℃下燕尾榫构件展开高温微动疲劳数值分析,并将仿真结果与Ciavarella理论接触应力进行对比来验证仿真的准确性。以等效应力、接触应力CPRESS、切向应力、滑移量、摩擦功、特征参量为衡量标准,分析在高温环境下载荷大小和摩擦系数对燕尾榫构件微动疲劳损伤和微动疲劳寿命的影响,为更好的探明高温下燕尾榫构件的微动疲劳损伤机理提供理论支持。The fretting fatigue of the joint between the compressor blades and the wheel disc in an aero-engine under complex loads greatly reduces the life of the engine.In order to better explore the fretting damage mechanism of aero-engine dovetail components at high temperature,the finite element simulation software ABAQUS is used to perform high temperature fretting fatigue numeri-cal analysis of dovetail components at 500℃,and the simulation results are compared with Ciavarella theoretical contact stress.Compare to verify the accuracy of the simulation.Taking equivalent stress,contact stress CPRESS,tangential stress,slippage,friction work,and characteristic parameters as measurement standards,analyze the effects of load and friction coefficient on the fretting fatigue damage and fretting fatigue life of dovetail components under high temperature environments It will provide theo-retical support for better probing the fretting fatigue damage mechanism of dovetail tenon components under high temperature.

关 键 词：微动疲劳 接触应力 燕尾榫 高温 

分 类 号：TH16[机械工程—机械制造及自动化] TH117.1