充液管路固有频率试验与计算分析

推进技术 ›› 2013, Vol. 34 ›› Issue (11): 1537-1542.

充液管路固有频率试验与计算分析

邱明星^1,2,陈志英¹,王建军¹,刘中华¹,赵伟志¹

北京航空航天大学能源与动力工程学院,北京 100191;北京航空航天大学能源与动力工程学院,北京 100191;北京航空航天大学能源与动力工程学院,北京 100191;北京航空航天大学能源与动力工程学院,北京 100191;北京航空航天大学能源与动力工程学院,北京 100191

发布日期:2021-08-15
作者简介:邱明星(1965—),男,研究员,博士生,研究领域为航空发动机总体结构设计。E-mail:606@avic.com 通讯作者:陈志英(1960—),男,教授,博士,研究领域为航空发动机总体结构优化设计、适航与维修等。E-mail:chenzhiying@buaa.edu.cn
基金资助:
国家自然科学基金(51275024)。

Experiment and Numerical Analysis of Natural Frequency for Liquid-Filled Pipe

College of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;College of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;College of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;College of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;College of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

Published:2021-08-15

摘要/Abstract

摘要： 为验证用有限元法计算充液管路固有频率特性的有效性,实现充液管路振动特性仿真,分别采用有限元分析和试验测试手段,对充液管路固有频率进行了试验和计算分析。对自由状态的空管、填充滑油和填充燃油三种状况的管路应用锤击法进行了振动测量,同时用ANSYS有限元分析系统对这三种状况管路固有频率进行了计算。通过计算与试验,分析了不同管径、不同管材、流体压力和流速、温度等因素对固有频率的影响,特别是得到了充液管路对比空管的固有频率下降规律,构建了考虑充液等因素的航空发动机管路固有频率计算模型。 

关键词: 管路;流固耦合;固有频率;试验;有限元计算 

Abstract: In order to confirm the validity of calculating natural frequencies for filling liquid pipe by the FEA, natural frequencies were measured and calculated for aero-engine pipes with liquid by the FEA and experiment. Using the hammering method vibration feature was obtained experimentally for pipes which are either empty,or filling with lubrication oil or filling with fuel, and the natural frequencies were calculated by the FEA with ANSYS software. The affecting factors were analyzed on natural frequencies for pipe diameter, pipe material, liquid pressure, liquid velocity and temperature. Especially, the numerical value of frequency decreasing trend was obtained with filling liquid pipe. The calculation model of natural frequencies was built up including several factors such as filling liquid. The technology foundation is established for analyzing pipe vibration features. 

Key words: Pipes;Liquid-solid couple; Natural frequency; Experiment;FEA

邱明星,陈志英,王建军,刘中华,赵伟志. 充液管路固有频率试验与计算分析[J]. 推进技术, 2013, 34(11): 1537-1542.

QIU Ming-xing^1,2,CHEN Zhi-ying¹, WANG Jian-jun¹, LIU Zhong-hua¹, ZHAO Wei-zhi¹. Experiment and Numerical Analysis of Natural Frequency for Liquid-Filled Pipe[J]. Journal of Propulsion Technology, 2013, 34(11): 1537-1542.

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