Development of Modified Lumped Parameter Model involving Amplitude-dependence Characteristics on Semi-active Engine Mount and Experimental Verification

doi:10.3901/JME.2017.14.098

Abstract

Abstract: A modified lumped parameter model is developed to describe amplitude-dependence dynamic characteristics on semi-active engine mount and to improve prediction accuracy of conventional lumped parameter model. Dynamic test is carried out to obtain experimental date on amplitude-dependence dynamic characteristic of semi-active engine mount and main rubber. The lumped parameters are identified by using genetic algorithm(GA) method when semi-active engine mount is operating in soft and hard mode respectively. In this way, some important lumped parameters depending on amplitude are found. These parameters include dynamic stiffness of main rubber and resistance in inertia track and so on. Furthermore, power exponential function and two polynomial response surface method are used to feature amplitude-dependence dynamic characteristic of main rubber and liquid resistance in inertia track. Finally, a modified lumped parameter model is established. The proposed modified lumped parameter model can predict amplitude-dependence dynamic characteristic of semi-active engine mount under different state(soft or hard)accurately. The mechanism of amplitude-dependence dynamic characteristic on semi-active engine mount is investigated and presented.

Key words: amplitude-dependence dynamic characteristic, modified lumped parameter model, parameter identification, response surface method, semi-active engine mount

CLC Number:

U464

ZHENG Ling, LIU Qiaobin, YOU Zuolong, PANG Jian, XU Xiaomin, CHEN Daijun. 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.

References

[1] TRUONG T Q,AHN K K. A new type of semi-active hydraulic engine mount using controllable area of inertia track[J]. Journal of Sound & Vibration,2010,329(3):247-260.
[2] 闵海涛,史文库,林逸,等. 动力总成半主动悬置动态特性仿真与试验研究[J]. 汽车技术,2007(7):34-38. MIN Haitao,SHI Wenku,LIN Yi,et al. Dynamic characteristic simulation and experimental study on a semi-active powertrain mount[J]. Automotive Technology,2007(7):34-38.
[3] 吴礼刚,段小成,黄兴,等. 半主动液阻型橡胶隔振器动态性能测试与计算分析[J]. 振动与冲击,2011,30(4):33-37. WU Ligang,DUAN Xiaochen,HUANG Xing,et al. Test and calculation for dynamic performance of a semi-active engine mount[J]. Journal of Vibration and Shock,2011,30(4):33-37.
[4] BARSZCZ B,DREYER J T,SINGH R. Experimental study of hydraulic engine mounts using multiple inertia tracks and orifices:Narrow and broad band tuning concepts[J]. Journal of Sound & Vibration,2012,331(24):5209-5223.
[5] 史文库,毛阳,姜雪,等. 半主动液压悬置参数识别与动态特性[J]. 吉林大学学报,2014,44(3):605-611. SHI Wenku,MAO Yang,JIANG Xue,et al. Parameter identification and dynamic characteristic of semi-active hydraulic mount[J]. Journal of Jilin University,2014,44(3):605-611.
[6] TIAN J,JIANG X,LIU G,et al. Dynamic characteristics of semi-active hydraulic engine mount based on fluid-structure interaction FEA[C]//MATEC Web of Conference, 2015,31:06003.
[7] YANG W,SHI W,CHEN C. Research on vibration isolation of semi-active controlled hydraulic engine mount with air spring[J]. SAE International Journal of Passenger Cars-Mechanical Systems,2014,7(1):15-20.
[8] WANG M,YAO G F,ZHAO J Z,et al. A novel design of semi-active hydraulic mount with wide-band tunable notch frequency[J]. Journal of Sound & Vibration,2014,333(8):2196-2211.
[9] 范让林,张祥龙. 可变解耦膜刚度半主动液阻悬置研究[J]. 机械工程学报,2015,51(14):108-114. FAN Ranling,ZHANG Xianglong. Study on semi-active hydraulic mount with variable-stiffness decoupling membrane[J]. Journal of Mechanical Engineering,2015,51(14):108-114.
[10] KIM G,SINGH R. Engine vibration control using passive,active,and adaptive hydraulic mount systems[R]. SAE,932897,1993.
[11] HANSEN D,WANG D,MEQH M,et al. NVH simulation of engine mounts verified in vehicle testing[J]. Atz Worldwide Emagazine,2011,113(6):42-47.
[12] SHERMAN M. Probability and statistics for engineering and the sciences[M]. 6th ed. USA:American Statistical Association,2006.
[13] 马天飞,胡杰宏,王登峰,等. 液压悬置元件幅变特性的研究[J]. 汽车工程,2013,35(7):604-607. MA Tianfei,HU Jiehong,WANG Dengfeng,et al. A study on the amplitude-dependence characteristic of hydraulic mount component[J]. Automotive Engineering,2013,35(7):604-607.
[14] 范让林,吕振华. 液阻悬置非线性动特性及其参数识别方法[J]. 机械工程学报,2007,43(7):145-151. FAN Ranglin,LÜ Zhenhua. Nonlinear dynamic characteristics and parameters identification method for hydraulic engine mount[J]. Chinese Journal of Mechanical Engineering,2007,43(7):145-151.
[15] 潘孝勇,谢新星,上官文斌. 变振幅激励下的液阻橡胶隔振器动态特性分析[J]. 振动与冲击,2012,31(1):144-149. PANG Xiaoyong,XIE Xinxing,SHANGGUAN Wenbin. Dynamic properties analysis for a hydraulic rubber isolator under excitations with different amplitudes[J]. Journal of Vibration and Shock,2012,31(1):144-149.