Modeling and Analysis of Static and Dynamic Characteristics of Nonlinear Seat Suspension for Off-Road Vehicles

Article English OPEN
Yan, Zhenhua ; Zhu, Bing ; Li, Xuefei ; Wang, Guoqiang (2015)
  • Publisher: Hindawi Publishing Corporation
  • Journal: Shock and Vibration (issn: 1070-9622, eissn: 1875-9203)
  • Related identifiers: doi: 10.1155/2015/938205
  • Subject: Physics | QC1-999 | Article Subject

Low-frequency vibrations (0.5–5 Hz) that harm drivers occur in off-road vehicles. Thus, researchers have focused on finding methods to effectively isolate or control low-frequency vibrations. A novel nonlinear seat suspension structure for off-road vehicles is designed, whose static characteristics and seat-human system dynamic response are modeled and analyzed, and experiments are conducted to verify the theoretical solutions. Results show that the stiffness of this nonlinear seat suspension could achieve real zero stiffness through well-matched parameters, and precompression of the main spring could change the nonlinear seat suspension performance when a driver’s weight changes. The displacement transmissibility curve corresponds with the static characteristic curve of nonlinear suspension, where the middle part of the static characteristic curve is gentler and the resonance frequency of the displacement transmissibility curve and the isolation minimum frequency are lower. Damping should correspond with static characteristics, in which the corresponding suspension damping value should be smaller given a flatter static characteristic curve to prevent vibration isolation performance reduction.
  • References (30)
    30 references, page 1 of 3

    Zhao, X., Kremb, M., Schindler, C.. Assessment of wheel loader vibration on the riding comfort according to ISO standards. Vehicle System Dynamics. 2013; 51 (10): 1548-1567

    Pazooki, A., Rakheja, S., Cao, D.. Modeling and validation of off-road vehicle ride dynamics. Mechanical Systems and Signal Processing. 2012; 28: 679-695

    Stein, G. J., Múčka, P.. Study of simultaneous shock and vibration control by a fore-and-aft suspension system of a driver's seat. International Journal of Industrial Ergonomics. 2011; 41 (5): 520-529

    Pazooki, A., Cao, D., Rakheja, S., Boileau, P.-É.. Ride dynamic evaluations and design optimisation of a torsio-elastic off-road vehicle suspension. Vehicle System Dynamics. 2011; 49 (9): 1455-1476

    Velmurugan, P., Kumaraswamidhas, L. A., Sankaranarayanasamy, K.. Whole body vibration analysis for drivers of suspended cabin tractor semitrailer. Experimental Techniques. 2014; 38 (2): 47-53

    Wang, Y., Li, S., Cheng, C., Jiang, X.. Dynamic analysis of a high-static-low-dynamic-stiffness vibration isolator with time-delayed feedback control. Shock and Vibration. 2015; 2015-19

    Gao, X., Chen, Q.. Static and dynamic analysis of a high static and low dynamic stiffness vibration isolator utilising the solid and liquid mixture. Engineering Structures. 2015; 99: 205-213

    Meng, L., Sun, J., Wu, W.. Theoretical design and characteristics analysis of a quasi-zero stiffness isolator using a disk spring as negative stiffness element. Shock and Vibration. 2015; 2015-19

    Maciejewski, I.. Control system design of active seat suspensions. Journal of Sound and Vibration. 2012; 331 (6): 1291-1309

    Sun, W., Li, J., Zhao, Y., Gao, H.. Vibration control for active seat suspension systems via dynamic output feedback with limited frequency characteristic. Mechatronics. 2011; 21 (1): 250-260

  • Metrics
    No metrics available
Share - Bookmark