阻尼四级可调减振器的结构改进与试验验证
Structure improvement and test verification of four-level-damping adjustable hydraulic shock absorber
-
摘要: 为提高阻尼四级可调减振器使用寿命，采用仿真技术对其进行优化设计：建立阻尼四级可调减振器的仿真模型，利用ICEM CFD前处理软件、ANSYS Fluent流体分析软件对阀片进行流体动力学仿真，以获取相应活塞运动速度下阀片的应力及内部油液流动速度数据；将减振器活塞孔的通孔由无阶梯状对称直通孔改成阶梯孔，以增加油液流通面积.用台架试验的方法从阻尼特性、示功特性、速度特性3个方面进行性能试验，结果表明，改进后的减振器各项性能均有较大提升，能有效提高使用寿命，验证了该优化设计的可行性.
-
关键词:
- 阻尼四级可调减振器 /
- Fluent流体仿真 /
- 台架性能试验
Abstract: In order to lengthen the life span of four-level-damping adjustable hydraulic shock absorber, the optimization design of the shock absorber was carried out by simulation technology. Its simulation model was established, the fluid dynamics simulation of valve was carried out by ICEM CFD pretreatment software and ANSYS Fluent fluid analysis software in order to obtain the stress and internal fluid flowing speed data of the valve under the corresponding piston movement speed. The optimization design of changing the non-step symmetrical through hole of piston hole of shock absorber to shoulder hole in order to increase the flowing area of fluid was proposed. The performance tested was made in the characteristics of damping, reactive power and speed. The result showed that the improved shock absorber improved in every aspect and could lengthen the life span, which verified the feasibility of the optimization design. -
-
[1]
黄志刚,毛恩荣,梁新成,等.汽车悬架发展的研究[J].机械设计与制造,2006(11):168.
-
[2]
俞德孚,郭世义,罗金良,等.车辆悬架减振器的外特性理论和实践[J].汽车技术,1987(6):29.
-
[3]
冯雪梅,刘佐民.汽车液力减振器技术的发展与现状[J].武汉理工大学学报(交通科学与工程版),2003,27(3):340.
-
[4]
SUNG K G,HAN Y M,CHO J W,et al.Vibration control of vehicle ER suspension system using fuzzy moving sliding mode controller[J].Journal of Sound and Vibration,2008(311):1004.
-
[5]
韩杰,王东方,王卫.阻尼四级可调减振器的设计研究与性能试验[J].机械设计与制造,2016(1):12.
-
[6]
吴建斌.液压减振器结构参数对性能的影响[D].成都:西南交通大学,2015.
-
[7]
刘西文.基于MATLAB/Simulink摩托车减震器阻尼特性仿真与性能分析[D].镇江:江苏大学,2013.
-
[8]
邢艺文.汽车扭杆弹簧的有限元分析与优化设计[J].郑州轻工业学院学报(自然科学版),2015,30(5):76.
-
[9]
王波群.双筒液压减振器外特性计算仿真[J].液压与气动,2011(4):88.
-
[10]
康雨.基于汽车行驶平顺性的液压减振器建模与优化设计研究[D].长沙:湖南大学,2014.
-
[1]
-
点击查看大图
计量
- PDF下载量: 96
- 文章访问数: 9046
- 引证文献数: 0
下载:
