中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2014, Vol. 33 ›› Issue (1): 153-156.DOI: 10.3969 /j.issn.1674-0696.2014.01.34

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液压减振器液压模型与气穴异响研究

罗天洪1,金锐超2,江礁1,胡启国1,朱孙科1   

  1. 1. 重庆交通大学机电与汽车工程学院,重庆400074; 2. 重庆交通大学交通与运输学院,重庆400074
  • 收稿日期:2012-11-29 修回日期:2013-03-02 出版日期:2014-02-15 发布日期:2015-01-22
  • 作者简介:罗天洪(1975—) ,男,四川乐至人,教授,博士,主要从事产品数字化开发、多领域仿真、虚拟试验方面的研究。E-mail: Tianhong.luo@163.com。
  • 基金资助:
    重庆市科技攻关项目( CSTC2009AC6077)

Hydraulic Model and Cavitations of Hydraulic Buffer

Luo Tianhong1,Jin Ruichao2,Jiang Jiao1,Hu Qiguo1,Zhu Sunke1   

  1. 1. School of Mechanical & Automotive Engineering,Chongqing Jiaotong University,Chongqing 400074,China; 2. School of Traffic & Transportation,Chongqing Jiaotong University,Chongqing 400074,China
  • Received:2012-11-29 Revised:2013-03-02 Online:2014-02-15 Published:2015-01-22

摘要: 为了降低液压减振器气穴异响,分析了压缩和复原过程中液压油的运动状态和气穴的生成过程,建立了气穴 系数与节流孔直径之间的关系模型,以及双筒液压减振器的参数模型; 通过Simulink 对液压减振器压缩和复原过程 的仿真分析,确定了减振器气穴异响与节流孔直径和油液运动黏度的关系。结果表明: 减振器的异响可以通过增加 节流阀的有效节流直径和降低油液运动黏度来减轻。

关键词: 减振器, 气穴, 噪音

Abstract: In order to reduce the noise of cavitations for hydraulic buffer,the generating process of cavitations noise and the hydraulic oil movement in the process of compression and recovery was analyzed. The model relating the relationship between cavitations coefficients and orifice length was established. And parameter model of binocular hydraulic shock absorber was also presented. The compression and recovery process of hydraulic shock absorber was analyzed by Simulink simulation, and the relationship among cavitations noise of the buffer,orifice length and the oil kinematic viscosity was then determined. It is found that oil shock absorber cavitations noise can be reduced by adding the effective orifices diameter of throttle and decreasing the kinematic viscosity of oil.

Key words: shock absorber, cavitations, noise

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