发动机管路振动疲劳寿命分析  

Vibration Fatigue Life Analysis of Engine Pipeline

作　　者：张振邦 李智劳[1] 刘凡[1] 宋巧治 Zhang Zhenbang;Li Zhilao;Liu Fan;Song Qiaozhi(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi'an,Shaanxi,710065,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,陕西西安710065

出　　处：《飞行器强度研究》2024年第4期22-29,共8页Aircraft Strength Research

摘　　要：在航天、航空等领域,发动机管路的主要功能是进行发动机的燃料输送,是发动机复杂结构系统中的重要组成部分。在发动机工作期间,管路系统面临着复杂的振动载荷,出现过多次振动疲劳破坏。本文基于Miner的疲劳损伤累积理论,结合试车环境的振动数据,使用振动疲劳寿命预估方法,通过有限元仿真得到管路的振动疲劳寿命云图。这种疲劳寿命分析方法适用于工程上结构的快速振动疲劳寿命预估,计算工作量较少,可以为结构的抗振动疲劳设计提供参考。In the field of aerospace,the main function of engine piping is to deliver fuel to the engine,which is an inportant component of the complex structural systerm of the engine.During engine operation,the piping systerm is subjected to com-plex vibration loads.resulting in mutiple instances of vibration fatigue failure.This article is based on the Miner fatigue dam-age accumulation theory.combined with vibration fatigue life estimation method,and obtaining the vibration fatigue life cloud map of the pipeline through finite element simulation.This fatigue life analysis method is suitable for rapid vibration fa-tigue life estimation of structures in engineering,with less computional workload.and can provide reference for anti vibration fatigurdesignof structures.

关 键 词：发动机管路 损伤累积 振动疲劳 寿命预估 

分 类 号：U46[机械工程—车辆工程]