弯管转角对液压管道振动特性影响分析

PDF(1436 KB)

振动与冲击 ›› 2013, Vol. 32 ›› Issue (13) : 165-169.

论文

弯管转角对液压管道振动特性影响分析

付永领1，荆慧强2

作者信息 +

Analysis of Elbow Angle Effect on Hydraulic Pipeline Vibration characteristics

FU Yongling1 JING Huiqiang2

Author information +

文章历史 +

摘要

飞行器液压管道的振动关系着飞行器管道系统的使用寿命及飞行安全,该振动主要由液压泵体振动、机身振动及管道与流体耦合振动三部分组成。前两种振动可以通过软管连接而得到较好的解决，最后一种振动则需要通过对管道系统进行优化设计来减弱。在管道与流体耦合振动中，管道转弯处又是耦合的敏感区域，应用有限单元法及计算流体动力学法对某型飞行器一典型的高压管段进行了数值液固耦合分析，探讨了在航空泵非定常流速下弯管转角对该管道振动特性的影响。分析结果表明，管道弯头的转角从降低到，其振动幅值降低了50%，振动峰峰值降低了68.29%，可见弯管转角对管道振动的影响需要在将来的设计中应给予足够的重视。

Abstract

Aircraft hydraulic pipeline vibration affects aircraft conduit system service life and flight safety. The vibration is mainly composed of pump vibration, fuselage vibration and pipeline and fluid coupling vibration. The first two can be reduced efficiently through soft connection, however, the latter needs optimization design to avoid coupling vibration. The bending zone is the sensitive area in coupling vibration, therefore, a certain type of aircraft pipeline subjected in high periodic pressure was analyzed with finite element method and CFD, more importantly, elbow angle effect on pipeline vibration characteristics under unsteady flow was studied. The results dedicate that the amplitude and peak-peak vibration values dropped 50% and 68.29% respectively with the corner angle ranged from to , which should be given more consideration in the future design work.

导出引用

付永领;荆慧强. 弯管转角对液压管道振动特性影响分析[J]. 振动与冲击, 2013, 32(13): 165-169

FU Yongling JING Huiqiang. Analysis of Elbow Angle Effect on Hydraulic Pipeline Vibration characteristics[J]. Journal of Vibration and Shock, 2013, 32(13): 165-169