考虑阀片大挠曲变形的减振器建模与参数辨识

中国机械工程 ›› 2014, Vol. 25 ›› Issue (18): 2544-2549,2555.

考虑阀片大挠曲变形的减振器建模与参数辨识

康雨1;赵亮1,2,3;郭孔辉1,2

1.湖南大学汽车车身先进设计制造国家重点实验室，长沙，410082
2.柳州孔辉汽车科技有限公司，柳州，545007
3.上汽通用五菱汽车股份有限公司，柳州，545007

出版日期:2014-09-25 发布日期:2014-09-26
基金资助:
广西科学研究与技术开发计划资助项目（桂科攻12118007-15）

Modeling and Parameter Identification of Shock Absorber with Consideration of Throttle-Slices' Large Deflection

Kang Yu1;Zhao Liang1,2,3;Guo Konghui1,2

1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha,410082
2.KH Automotive Technologies (Liuzhou) Co.,Ltd.,Liuzhou,Guangxi,545007
3.SAIC GM Wuling Automobile Co.,Ltd.,Liuzhou,Guangxi,545007

Online:2014-09-25 Published:2014-09-26

摘要/Abstract

摘要：

为建立减振器参数化数学模型，基于圆薄板大挠曲理论和弹性力学原理，推导出了阀片大挠曲变形与半径的关系式。建立外半径不全相等时环形叠加阀片的力学模型，提出用大挠曲变形解析方法与有限元分析相结合的等效模型求解方式推导出该环形叠加阀片挠曲变形的解析式。根据活塞阀系叠加阀片与复原弹簧同时变形的串联原理，建立了该双筒式减振器在复原与压缩行程中阻尼特性的数学模型。采用NSGA-Ⅱ算法对模型中难以测量的参数进行辨识，辨识后的减振器外特性仿真结果与试验数据基本吻合，说明所建立的参数化模型比较可靠，对减振器的性能调试具有指导意义。

关键词: 减振器, 数学模型, 环形阀片, 大挠曲变形, NSGA-Ⅱ, 参数辨识

Abstract:

To establish parameterized mathematical model of damper, based on large deflection theory of circular plate and elastic mechanical principals, a deformation equation related with radius was established. The mechanics model of annular superposition throttle-slices with partial equal external radius was established. Meanwhile, a solution of equivalent model was proposed combined with large deformation and finite element analysis. Moreover, the analytical formula of large deflection for annular superposition throttle-slices was deduced. According to the series deformation theory of superposition throttle-slices and piston valve spring, the mathematical model of double cylinder shock absorber for rebound and compression stroke was established. Some parameters which were difficult to measure were identified by using NSGA-Ⅱ. The simulation results of outer characteristic of shock absorber after identification agree well with test data, demonstrating that the established parametric model is relatively reliable and has guiding significance for tuning of the damper performance.

Key words: shock absorber;mathematical model;annular throttle-slice;large deflection, NSGA-Ⅱ, parameter identification

中图分类号:

U463.33

康雨, 赵亮, 郭孔辉, . 考虑阀片大挠曲变形的减振器建模与参数辨识[J]. 中国机械工程, 2014, 25(18): 2544-2549,2555.

Kang Yu, Zhao Liang, Guo Konghui, . Modeling and Parameter Identification of Shock Absorber with Consideration of Throttle-Slices' Large Deflection[J]. China Mechanical Engineering, 2014, 25(18): 2544-2549,2555.

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