基于Fluent软件的刹车压力伺服阀振动问题仿真与分析  

Simulation and Analysis of Vibration of Hydraulic Brake System Based on Fluent

作　　者：谢彦 马立瑞 韦敏洁 刘世前[1] XIE Yan;MA Li-rui;WEI Min-jie;LIU Shi-qian(School of Aeronautics and Astronautics,Shanghai Jiaotong Univeristy,Shanghai 200240;AVIC First Aircraft Institute,Xi'an,Shaanxi 710089;The No.704 Institute of China Shipbuilding Industry Corporation,Shanghai 200031;Xi'an Feibao Technology Co.,Ltd.,Xi'an,Shaanxi 710089)

机构地区：[1]上海交通大学航空航天学院,上海200240 [2]航空工业第一飞机设计研究院,陕西西安710089 [3]中船重工第704研究所,上海200031 [4]西安飞豹科技有限公司,陕西西安710089

出　　处：《液压与气动》2020年第3期158-162,共5页Chinese Hydraulics & Pneumatics

摘　　要：某型飞机机轮刹车系统所用射流管式压力伺服阀在试验过程中,阀体高频振动,并伴有尖锐刺耳“啸叫”声。通过试验的方法,发现该问题与伺服阀主阀芯异常旋转直接关联。基于Fluent软件对刹车压力伺服阀主阀芯流场进行建模与仿真,选用标准的k-ε模型,采用SIMPLEC方法计算。通过对仿真结果进行分析,明确阀芯异常旋转的原因,并根据仿真结果对主阀结构进行优化改进,经试验验证,该型刹车压力伺服阀的振动问题得到了解决。The high-frequency vibration and the squeaking noise are reported in the experiments of a pressure servo-valve of jet-pipe type,which are associated with the unexpected rotation of the spool.The Fluent is applied to investigate the flow characteristics inside the valve numerically,with the standard k-εturbulent model and the SIMPLEC algorithm.The cause of spool’s rotation is found based on the simulation results,and the valve structure is optimized.Further experiments indicate that the vibration and noise are eliminated in the new design.

关 键 词：机轮刹车系统 刹车压力伺服阀 振动 环槽直径 阀芯 

分 类 号：TH137[机械工程—机械制造及自动化] V227.5[航空宇航科学与技术—飞行器设计]