基于ANSYS Workbench的压接修理民机液压管路振动特性分析

doi:10.7527/S1000-6893.2019.22828

固体力学与飞行器总体设计

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基于ANSYS Workbench的压接修理民机液压管路振动特性分析

贾宝惠, 于灵杰, 卢翔

中国民航大学航空工程学院, 天津 300300

收稿日期:2018-12-03 修回日期:2019-03-20 出版日期:2019-09-15 发布日期:2019-06-14
通讯作者: 于灵杰 E-mail:15510928918@163.com
基金资助:
中国民航局重大专项（MHRD20160105）；民机专项（MJ-2016-Y-73）

Vibration characteristics analysis of pressurized repair hydraulic pipe of civil aircraft based on ANSYS Workbench

JIA Baohui, YU Lingjie, LU Xiang

Faculty of Aerospace Engineering, Civil Aviation University of China, Tianjin 300300, China

Received:2018-12-03 Revised:2019-03-20 Online:2019-09-15 Published:2019-06-14
Supported by:
Major Project of China Civil Aviation Administration (MHRD20160105); Special Project of Civil Aircraft (MJ-2016-Y-73)

摘要/Abstract

摘要： 探究振动环境中管径为1/4 in的民机液压直管的最佳压接修理尺寸。首先，建立压接修理民机液压直管与流体的有限元模型，在ANSYS Workbench中对该模型进行有限元仿真分析得到其前6阶固有频率；然后，用三综合振动试验台对压接修理民机液压直管进行扫频振动试验，得到其前6阶固有频率，将试验结果平均值与仿真结果进行对比，结果误差较小且曲线拟合良好，验证了有限元仿真分析的合理性；最后，对压接修理民机液压管路进行受力分析，并以压制区域公差和压接长度为变量分别对压接修理民机液压直管进行固有频率、最大应力以及沿Y、Z轴方向的最大位移响应进行分析。结果表明：压制区域公差为4 mm、压接长度为39 mm时，管路的固有频率较大，应力及位移响应较小，此时，最大应力及位移响应集中分布于压接接头处，且与受力分析结果一致。

关键词: 压接修理直管, 固有频率, 扫频振动试验, 压制区域公差, 压接长度

Abstract: This paper explores the optimum repairing dimension of hydraulic straight pipes of civil aircraft with diameter of 1/4 in vibration environment. Firstly, the finite element model for hydraulic straight pipe and fluid of civil aircraft is established, and the first six natural frequencies are obtained by the finite element simulation analysis in ANSYS Workbench. Then the first six natural frequencies of the hydraulic straight pipe of civil aircraft are obtained by sweeping frequency vibration test with three comprehensive vibration test benches.The comparison of the average of the test results with the simulation results shows that the error is small with good curve fitting, which verifies the rationality of the simulation analysis. Finally, the stress analysis of the pressure-joint repair pipeline is carried out, and the natural frequency, the maximum stress, and the maximum displacement response along the Y and Z axes of the pressure-joint repair civil aircraft hydraulic straight pipe are analyzed with the tolerance of the pressure area and the length of the pressure-joint as variables. The results show that when the tolerance of pressing zone is 4 mm and the length of pressing joint is 39 mm, the natural frequency of the pipeline is relatively large and the response of stress and displacement is relatively small. At this time, the maximum stress and displacement response are concentrated at the joint, which is consistent with the results of stress analysis.

Key words: pressing repair conduit, natural frequency, sweep vibration test, pressure zone tolerance, pressing length

中图分类号:

V267

贾宝惠, 于灵杰, 卢翔. 基于ANSYS Workbench的压接修理民机液压管路振动特性分析[J]. 航空学报, 2019, 40(9): 222828-222828.

JIA Baohui, YU Lingjie, LU Xiang. Vibration characteristics analysis of pressurized repair hydraulic pipe of civil aircraft based on ANSYS Workbench[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(9): 222828-222828.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于ANSYS Workbench的压接修理民机液压管路振动特性分析

Vibration characteristics analysis of pressurized repair hydraulic pipe of civil aircraft based on ANSYS Workbench

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