Fractional calculus-based vibration suppression model and numerical method for viscoelastic suspension
LI Zhan-long1,2, SUN Da-gang1,2, LIU Fu-xi1, SONG Yong2, ZHAO Shu-pin2
1 School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology,Xi’an 710048, China;
2 College of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
Abstract:To obtain dynamic responses of viscoelastic suspension accurately, FKV constitutive model of viscoelastic materials was developed by employing fractional derivative. Vibration model of viscoelastic suspension considering geometric factor was also built based on FKV. Numerical solution was derived by employing Grumwald-Letnikov definition for fraction calculus and matrix function theory. For comparison, dynamic contact FEM was established based on a crawler vehicle installed viscoelastic suspension to compare with fractional method. Results show that fractional vibration control model can embody the nonlocal correlation and memory feature of viscoelastic suspension which exhibits excellent vibration control capability. The numerical result displays well agreement with that from FEM. The study provides essential theoretical references for the future in-situ test and practice application.
李占龙1,2,孙大刚1,2,宋 勇2,刘付喜1,赵树萍2. 基于分数阶导数的黏弹性悬架减振模型及其数值方法[J]. 振动与冲击, 2016, 35(16): 123-129.
LI Zhan-long1,2, SUN Da-gang1,2, LIU Fu-xi1, SONG Yong2, ZHAO Shu-pin2. Fractional calculus-based vibration suppression model and numerical method for viscoelastic suspension. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(16): 123-129.
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