Vibration control of high-speed trains self-excitation under-chassis equipment by HSLDS vibration isolators

다국어 초록 (Multilingual Abstract)

To minimize the self-excitation effects of the equipment on the carbody, a high static and low dynamic stiffness (HSLDS) vibration isolator is proposed by connecting a negative stiffness unit and a positive linear stiffness spring in parallel. The nonlinear stiffness of the HSLDS isolator can be designed according to the needs of any target stiffness curve. A vibration test is applied to obtain the vibration acceleration of the under-chassis equipment. A rigid-flexible coupling multi-body dynamic model of a high-speed train is established which considers the elastic vibration of the carbody and the self-excitation of the under-chassis equipment based on the tested result.
Different connection methods of the under-chassis equipment including rigid hanging, vibration isolation theory (VIT) hanging, dynamic vibration absorber (DVA) hanging and HSLDS hanging are applied and their effects on the carbody vibration and ride quality are investigated. The simulation results reveal that the proposed HSLDS vibration isolator can effectively isolate the self-excitation of the under-chassis equipment from the carbody and enhance the ride quality of the high-speed train.

참고문헌 (Reference)

1 P. Alabuzhewv, "Vibration protecting and measuring systems with quasi-zero stiffness" Taylor &Francis Group 1989

2 Y. Li, "Vibration attenuation of high dimensional quasi-zero stiffness floating raft system" 126 : 186-195, 2017

3 Y. Sugahara, "Suppression of vertical vibration in railway vehicles by controlling the damping force of primary and secondary suspensions" 49 (49): 7-15, 2008

4 Y. Sun, "Study on second quasi-zero-stiffness suspension of low-floor tramcar" 53 (53): 132-137, 2017

5 H. Zhang, "Spring manual" Mechanical engineering Press 2008

6 R. Guyan, "Reduction of stiffness and mass matrices" 3 (3): 380-380, 1965

7 T. Tomioka, "Reduction of bending vibration in railway vehicle carbodies using carbody-bogie dynamic interaction" 48 (48): 467-486, 2010

8 J. Zhou, "Railway vehicle vibration and control" China Railway Press 2012

9 E. I. Rivin, "Passive vibration isolation" The American Society of Mechanical Engineers 2003

10 D. Gong, "On the resonant vibration of flexible railway car body and its suppression with DVA" 19 (19): 649-657, 2013

11 A. Carrella, "On the design of a high-static-low-dynamic stiffness isolator using linear mechanical springs and magnets" 315 (315): 712-720, 2008

12 D. Gong, "Method of multi-mode vibration control for the carbody of high-speed electric multiple unit trains" 409 : 94-111, 2017

13 W. Sun, "Influences of suspended equipment under car body on high-speed train ride quality" 16 (16): 812-817, 2011

14 D. Gong, "Influence of under-chassissuspended equipment on high-speed EMU trains and the design of suspension parameters" 230 (230): 1790-1802, 2016

15 A. Carrella, "Force and displacement transmissibility of a nonlinear isolator with high-static-low-dynamic-stiffness" 55 : 22-29, 2012

16 V. K. Garg, "Dynamics of railway vehicle systems" Academic Press 1984

17 K. Seto, "Dynamic vibratin absorber and its applications" China Machine Press 2013

18 L. Meng, "Design and analysis of a quasi-zero stiffness isolator using a slotted conical disk spring as negative stiffness structure" 16 (16): 1769-1785, 2014

19 G. Schandl, "Comfort enhancement by an active vibration reduction system for a flexible railway car body" 45 (45): 835-847, 2007

20 P. F. Carlbom, "Combining MBS with FEM for rail vehicle dynamics analysis" 6 (6): 291-300, 2001

21 W. Sun, "Analysis of modal frequency optimization of railway vehicle car body" 8 (8): 2016

22 E. Foo, "Active suspension control of flexible-bodied railway vehicles using electro-hydraulic and electromagnetic actuators" 8 (8): 507-518, 2000

23 E. F. Colombo, "Active carbody roll control in railway vehicles using hydraulic actuation" 31 (31): 24-34, 2014

24 Y. Sun, "A new vibration absorber design for underchassis device of a high-speed train" 2017 : 1-8, 2017

25 M. Dumitriu, "A new passive approach to reducing the carbody vertical bending vibration of railway vehicles" 4 : 2017