This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of Seat Suspensions with Embedded Negative Stiffness Elements for Isolating Bus Users’ Whole-Body Vibrations
Technical Paper
2021-01-5019
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
Bus drivers are a group at risk of often suffering from musculoskeletal problems, such as low-back pain, while bus passengers on the last-row seats experience accelerations of high values. In this paper, the contribution of K-seat in decreasing the above concern is investigated with a detailed simulation study. The K-seat model, a seat with a suspension that functions according to the KDamper concept, which combines a negative stiffness element with a passive one, is benchmarked against the conventional passive seat (PS) in terms of comfort when applied to different bus users’ seats. More specifically, it is tested in the driver’s and two different passengers’ seats, one from the rear overhang and one from the middle part. For the benchmark shake, both are optimized by applying excitations that correspond to real intercity bus floor responses when it drives over a real road profile. Then a human model is placed on the seats in order to compare their optimum solutions in terms of the user’s whole-body vibrations (WBVs), using objective comfort metrics. Based on the results, the K-seat improves significantly the comfort of the users (~92%) compared to the PS, while it achieves a similar decrease in the maximum values of the user’s back accelerations (~97%).
Authors
Topic
Citation
Papaioannou, G., Sekulic, D., Velenis, E., and Antoniadis, I., "Investigation of Seat Suspensions with Embedded Negative Stiffness Elements for Isolating Bus Users’ Whole-Body Vibrations," SAE Technical Paper 2021-01-5019, 2021, https://doi.org/10.4271/2021-01-5019.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 | ||
Unnamed Dataset 7 | ||
Unnamed Dataset 8 | ||
Unnamed Dataset 9 | ||
Unnamed Dataset 10 |
Also In
References
- Johanning , E. Whole-Body Vibration-Related Health Disorders in Occupational Medicine—An International Comparison Ergonomics 58 7 1239 1252 2015
- Kompier , M.A.J. and Di Martino , V. Review of Bus Drivers’ Occupational Stress and Stress Prevention Stress Med. 11 1 253 262 1995
- Griffin , M.J. Discomfort from Feeling Vehicle Vibration Veh. Syst. Dyn. 45 8 679 698 2007
- Patterson , P.K. , Eubanks , T.L. , and Ramseye , R. Back Discomfort Prevalence: And Associated Factors among Bus Drivers AAOHN J. 34 10 481 484 1986
- Johanning , E. Back Disorder Intervention Strategies for Mass Transit Operators Exposed to Whole-Body Vibration—Comparison of Two Transit System Approaches and Practices J. Sound Vib. 215 4 629 634 1998
- Bovenzi , M. et al. An Epidemiological Study of Low Back Pain in Professional Drivers J. Sound Vib. 298 3 514 539 2006
- Alperovitch-Najenson , D. , Santo , Y. , Masharawi , Y. , Katz-Leurer , M. et al. Low Back Pain among Professional Bus Drivers: Ergonomic and Occupational-Psychosocial Risk Factors Isr. Med. Assoc. J. 12 1 26 31 2010
- Lewis , C.A. , and Johnson , P.W. Whole-Body Vibration Exposure in Metropolitan Bus Drivers Occup. Med. (Chic. Ill). 62 519 524 2012
- Sekulić , D. , Dedović , V. , Rusov , S. , Šalinić , S. et al. Analysis of Vibration Effects on the Comfort of Intercity Bus Users by Oscillatory Model with Ten Degrees of Freedom Appl. Math. Model. 37 18-19 8629 8644 2013
- Sekulić , D. , Dedović , V. , Rusov , S. , Obradović , A. et al. Definition and Determination of the Bus Oscillatory Comfort Zones Int. J. Ind. Ergon. 53 328 339 2016
- Maciejewski , I. , Meyer , L. , and Krzyzynski , T. Modelling and Multi-Criteria Optimisation of Passive Seat Suspension Vibro-Isolating Properties J. Sound Vib. 324 520 538 2009
- Gohari , M. , Rahman , R.A. , Tahmasebi , M. , and Nejat , P. Off-road Vehicle Seat Suspension Optimisation, Part I: Derivation of an Artificial Neural Network Model to Predict Seated Human Spine Acceleration in Vertical Vibration J. Low Freq. Noise, Vib. Act. Control 33 4 429 442 2014
- Ho Bang , J. , Lee , C.A. , Kim , H.Y. , Kim , H.J. et al. Optimization of the Static Properties of Seat Foam to Improve the Seating Comfort Proc. Inst. Mech. Eng. Part D: J. Automob. Eng. 231 1945 1960 2016
- Sun , W. , Xu , W.T. , Lin , J.H. , Kennedy , D. et al. Ride-Comfort-Oriented Suspension Optimization Using the Pseudo-Excitation Method Proc. Inst. Mech. Eng. Part D J. Automob. Eng. 224 1357 1367 2010
- Du , H. , Li , W. , and Zhang , N. Integrated Seat and Suspension Control for a Quarter Car with Driver Model IEEE Trans. Veh. Technol. 61 9 3893 3908 2012
- Yao , H.J. , Fu , J. , Yu , M. , and Peng , Y.X. Semi-Active H ∞ Control of Seat Suspension with MR Damper J. Phys. Conf. Ser. 412 1 012054 2013
- Ning , D. , Sun , S. , Zhang , J. , Du , H. et al. An Active Seat Suspension Design for Vibration Control of Heavy-Duty Vehicles J. Low Freq. Noise, Vib. Act. Control 35 264 278 2016
- Zhao , Y. and Wang , X. A Review of Low-Frequency Active Vibration Control of Seat suspension Systems Appl. Sci. 9 16 3326 2019
- Blood , R.P. , Ploger , J.D. , Yost , M.G. , Ching , R.P. et al. Whole Body Vibration Exposures in Metropolitan Bus Drivers: A Comparison of Three Seats J. Sound Vib. 329 1 109 120 2010
- Blood , R.P. , Yost , M.G. , Camp , J.E. , and Ching , R.P. Whole-Body Vibration Exposure Intervention among Professional Bus and Truck Drivers: A Laboratory Evaluation of Seat-Suspension Designs J. Occup. Environ. Hyg. 12 6 351 362 2015
- Thamsuwan , O. , Blood , R.P. , Lewis , C. , Rynell , P.W. et al. Whole Body Vibration Exposure and Seat Effective Amplitude Transmissibility of Air Suspension Seat in Different Bus Designs Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting Boston, MA 2012
- Le , T.D. and Ahn , K.K. A Vibration Isolation System in Low Frequency Excitation Region Using Negative Stiffness Structure for Vehicle Seat J. Sound Vib. 330 6311 6335 2011
- Le , T.D. and Ahn , K.K. Active Pneumatic Vibration Isolation System Using Negative Stiffness Structures for a Vehicle Seat J. Sound Vib. 333 5 1245 1268 2014
- Le , T.D. and Ahn , K.K. Experimental Investigation of a Vibration Isolation System Using Negative Stiffness Structure Int. J. Mech. Sci. 70 99 112 2013
- Wang , X. , Liu , H. , Chen , Y. , and Gao , P. Beneficial Stiffness Design of a high-Static-Low-Dynamic-Stiffness Vibration Isolator Based on Static and Dynamic Analysis Int. J. Mech. Sci. 142-143 235 244 2018
- Zhou , J. , Wang , X. , Xu , D. , and Bishop , S. Nonlinear Dynamic Characteristics of a Quasi-Zero Stiffness Vibration Isolator with Cam-Roller-Spring Mechanisms J. Sound Vib. 346 1 53 69 2015
- Yan , Z. , Zhu , B. , Li , X. , and Wang , G. Modeling and Analysis of Static and Dynamic Characteristics of Nonlinear Seat Suspension for Off-Road Vehicles Shock Vib. 2015 938205 2015
- Zhao , L. , Yu , Y. , Zhou , C. , and Yang , F. Modelling and Validation of a Seat Suspension with Rubber Spring for Off-Road Vehicles JVC/Journal Vib. Control 24 4110 4121 2017
- Papaioannou , G. , Voutsinas , A. , Koulocheris , D. , and Antoniadis , I. Dynamic Performance Analysis of Vehicle Seats with Embedded Negative Stiffness Elements Veh. Syst. Dyn. 58 2 307 337 2020
- Papaioannou , G. , Voutsinas , A. , and Koulocheris , D. Optimal Design of Passenger Vehicle Seat with the Use of Negative Stiffness Elements Proc. Inst. Mech. Eng. Part D: J. Automob. Eng. 234 610 629 2019
- Sekulić , D. , Rusov , S. , Dedović , V. , Šalinić , S. et al. Analysis of Bus Users’ Vibration Exposure Time Int. J. Ind. Ergon. 65 26 35 2018
- Antoniadis , I.A. , Kanarachos , S.A. , Gryllias , K. , and Sapountzakis , I.E. KDamping: A Stiffness Based Vibration Absorption Concept JVC/Journal Vib. Control 24 3 588 606 2016
- Koulocheris , D. , Papaioannou , G. , and Christodoulou , D. An Approach for Multi-Objective Optimization of Vehicle Suspension System IOP Conf. Ser. Mater. Sci. Eng. 252 1 012037 2017
- Liang , C.-C. and Chiang , C.-F. A Study on Biodynamic Models of Seated Human Subjects Exposed to Vertical Vibration Int. J. Ind. Ergon. 36 10 869 890 2006
- Papaioannou , G. and Koulocheris , D. An Approach for Minimizing the Number of Objective Functions in the Optimization of Vehicle Suspension Systems J. Sound Vib. 435 149 169 2018
- Adam , S.A. and Jalil , N.A.A. Vertical Suspension Seat Transmissibility and SEAT Values for Seated Person Exposed to Whole-Body Vibration in Agricultural Tractor Preliminary Study Procedia Eng. 170 435 442 2017
- Sekulic , D. , Ivkovic , I. , and Mladenovic , D. Effects of the Seat Cushion Oscillatory Parameters on Vibration Exposure and Dynamic Seat Comfort in the Bus J. Appl. Eng. Sci. 15 4 433 441 2017