针对经典液压悬置集总参数模型无法准确反映固定解耦式液压悬置动特性的问题,分别提出了一种新的液压悬置集总参数模型和一种经典液压悬置集总参数模型的修正模型。两种模型中均考虑了解耦膜刚度对上液室体积柔度的影响,前者将解耦膜显式等效为一弹簧,增加了解耦膜刚度和等效泵吸面积两个参数;后者在经典集总参数模型基础上,根据解耦膜刚度对上液室体积柔度进行了修正,具有更简洁的表达形式。然后使用有限元分析方法辨识了解耦膜刚度和等效体积柔度,以及其余集总参数。最后将辨识得到的集总参数代入模型中后仿真计算发现,考虑解耦膜刚度以后,两种集总参数模型均可准确地预测固定解耦式液压悬置的动刚度和滞后角,而传统液压悬置的集总参数模型无法准确反映该类型液压悬置动态特性。
Abstract
Here, in order to improve dynamic characteristics prediction accuracy of a fixed decoupling hydraulic engine mount (HEM), a novel lumped parametric model and a modified lumped parametric model were proposed, respectively both considering effects of decoupling film stiffness on volume flexibility of upper liquid chamber, and the former made decoupling film be equivalent to an explicit spring with two added parameters of decoupling film stiffness and equivalent pump suction area, while the latter modified flexibility of upper liquid chamber with a more concise form according to decoupling film stiffness based on conventional lumped parametric model.Then the finite element method was employed to identify decoupling film stiffness, upper liquid chamber’s equivalent volume flexibility and other lumped parameters.Finally, all identified lumped parameters were substituted in the two models and to perform simulations.The results showed that both two proposed models can correctly predict dynamic stiffness and lagging angle of a fixed decoupling HEM, while the conventional lumped parametric model of HEM can’t do.
关键词
液压悬置 /
固定式解耦膜 /
参数辨识 /
集总参数模型
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Key words
hydraulic engine mount /
fixed decoupling film /
parametric identification /
lumped parametric model
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参考文献
[1] Christopherson J, Mahinfalah M, Jazar R N. Suspended decoupler: A new design of hydraulic engine mount[J]. Advances in Acoustics and Vibration, 2012, 2012.
[2] 上官文斌,吕振华. 液阻型橡胶隔振器非线性特性仿真分析[J]. 振动工程学报, 2003,16(04): 393-398.
SHANGUAN W B, LU Z H. Nonlinear Modeling and Analysis of Hydraulically Damped Rubber Mounts[J]. Journal of Vibration Engineering, 2003,16(04):393-398.
[3] 时培成,陈无畏,姜武华. 液压悬置非线性动态特性仿真研究[J]. 中国机械工程, 2009, 20(21): 2545-2548.
SHI P C, CHEN W W, JIANG W H. Simulation Research on Hydraulic Mount Nonlinear Dynamic Characteristics[J]. China Mechanical Engineering, 2009, 20(21):2545-2548.
[4] Kim, G, Singh R. A study of passive and adaptive hydraulic engine mount systems with emphasis on non-linear characteristics[J]. Journal of Sound and Vibration, 1995, 179(3):427-453.
[5] Golnaraghi M F, Nakhaie Jazar G. Development and analysis of a simplified nonlinear model of a hydraulic engine mount[J]. Journal of vibration and control, 2001, 7(4): 495-526.
[6] Wang L R, Lu Z H, Hagiwara I. Analytical analysis approach to nonlinear dynamic characteristics of hydraulically damped rubber mount for vehicle engine[J]. Nonlinear Dynamics, 2010, 61(1-2): 251-264.
[7] Wang L R, Wang J C, Hagiwara I. An integrated characteristic simulation method for hydraulically damped rubber mount of vehicle engine[J]. Journal of Sound and Vibration, 2005, 286(4):673-696.
[8] Bruns J, Dreyer J. Dynamic Analysis of a Hydraulic Body Mount with Amplitude and Preload Dependence[J]. SAE International Journal of Vehicle Dynamics, Stability, and NVH, 2017, 1(2017-01-1909): 480-487.
[9] Fan R, Lu Z. Fixed points on the nonlinear dynamic properties of hydraulic engine mounts and parameter identification method: Experiment and theory[J]. Journal of Sound and Vibration, 2007, 305(4):703-727.
[10] Shangguan W B, Zhen-Hua L U. Dynamic characteristic analysis of a hydraulic engine mount with lumped model based on finite element analysis[R]. SAE Technical Paper, 2003.
[11] Li Q, Liu W, Sun Y, et al. Parameter Identification on Lumped Parameters of the Hydraulic Engine Mount Model[C]//MATEC Web of Conferences. EDP Sciences, 2016, 40.
[12] 郑玲, 犹佐龙, 刘巧斌, 等. 基于多场耦合建模的发动机半主动悬置参数识别[J]. 汽车工程, 2017, 39(5): 543-550.
Zheng Ling, You Zuo-long, Liu Qiao-bin, et al. Parameter Identification of Semi-active Engine Mount Based on Multi-field Coupling Modeling[J]. Automotive Engineering, 2017,39(5): 543-550.
[13] Jazar G N, Golnaraghi M F. Nonlinear Modeling, Experimental Verification, and Theoretical Analysis of a Hydraulic Engine Mount[J]. Journal of Vibration and Control, 2002, 8(8):87-116.
[14] 吕振华, 梁伟, 上官文斌. 汽车发动机液阻悬置动特性仿真与实验分析[J]. 汽车工程, 2002, 24(2): 105-111.
Lu Zheng-hua, Liang Wei. Simulation and Experimental Analysis of Dynamic Characteristics of Automotive Engine’s Hydro-elastic Mount[J]. Automotive Engineering, 2002,24(2): 105-111.
[15] 郑玲, 刘巧斌, 犹佐龙, 等. 半主动悬置幅变动特性建模与试验分析[J]. 机械工程学报, 2017, 53(14): 98-105.
Zheng Ling, Liu Qiao-bin, You Zuo-long, et al. Development of Modified Lumped Parameter Model involving Amplitude-dependence Characteristics on Semi-active Engine Mount and Experimental Verification[J]. Journal of Mechanical Engineering, 2017, 53(14): 98-105.
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脚注
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