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Development of a Dynamic Model of an Air-Ride Seat for on Highway Trucks
Technical Paper
2003-01-3363
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, a two-degree-of-freedom (DOF) dynamic model of an on-highway truck seat is created using the Simulink simulation program from MATLAB. Engineering properties of the seat used in the model are measured in the laboratory, obtained from seat component manufacturers, or estimated using engineering judgment. Modeled parameters include: air spring force, damper force, end-stop force, cushion force, seat belt force, driver mass, and cab vertical oscillations due to road disturbances. The model is developed to facilitate seat design as a means of increasing the comfort level that on-highway truck drivers face while carrying out their everyday tasks.
Field testing of the seat is performed in order to validate the model. National Instruments hardware and Labview software are used for the data acquisition. Cab floor acceleration and seat height relative to the cab floor are measured and collected while the truck in which the seat is mounted is traveling over several different types of roads. Cab floor displacements are formulated from cab floor acceleration signals using Fourier methods and integration. These filtered cab floor displacements serve as inputs to the two-DOF model.
Model outputs are compared with measured seat outputs using the power spectra of the seat height relative to the cab floor. Initially, overall agreement of model outputs to measured seat outputs is encouraging. There is better agreement observed at frequencies of about 2.5 Hz and higher. Seat model parameters are adjusted from the original model as an attempt to improve the agreement between model and actual measured outputs. It is seen that, at least for inputs from certain roads, the model can be improved by changing some of its parameters.
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Citation
Inendino, L., Strauss, M., and Medanic, J., "Development of a Dynamic Model of an Air-Ride Seat for on Highway Trucks," SAE Technical Paper 2003-01-3363, 2003, https://doi.org/10.4271/2003-01-3363.Also In
Rollover Prevention, Crash Avoidance, Crashworthiness, Ergonomics and Human Factors
Number: SP-1813; Published: 2003-11-10
Number: SP-1813; Published: 2003-11-10
References
- American Trucking Association (ATA) 2002 American Trucking Trends 2001
- Kelsey Jennifer L. Hardy Robert J. “Driving of Motor Vehicles as a Risk Factor for Acute Herniated Lumbar Intervertebral Disc” American Journal of Epidemiology 102 1 63 73 1975
- Gruber George J. “Relationships Between Whole-Body Vibration and Morbidity Patterns Among Interstate Truck Drivers” U.S. DHEW/NIOSH Publication No. 77-167 1977
- Frymoyer J.W. Pope M.H. Clements Janice H. Wilder David G. MacPherson Brian Ashikaga Takamaru “Risk Factors in Low-Back Pain: An Epidemiological Survey” The Journal of Bone and Joint Surgery 65-A 2 213 218 1983
- Sanders Mark S. McCormick Ernest J. Human Factors in Engineering and Design 7th McGraw-Hill, Inc. New York 1993
- Virginia Behrens Seligman Paul Cameron Lorraine Mathias C.G. Toby Fine Lawrence “The Prevalence of Back Pain, Hand Discomfort, and Dermatitis in the US Working Population” American Journal of Public Health 84 11 1780 1784 1994
- Kollman Bob Prairie International, Champaign, Illinois Personal Communication September 20 2001
- Ball David Goodyear Industrial Products Personal Communication August 28 2002
- Fessel Paul Firestone Industrial Products Personal Communication January 24 2002
- Wu Xuting Griffin Michael J. “Towards the Standardization of a Testing Method for the End-Stop Impacts of Suspension Seats” Journal of Sound and Vibration 192 1 307 319 1996
- Wu Xuting Griffin Michael J. “The Influence of End-Stop Buffer Characteristics on the Severity of Suspension Seat End-Stop Impacts” Journal of Sound and Vibration 215 4 989 996 1998
- Wu Xuting Study of Driver-Seat Interactions and Enhancement of Vehicular Ride Vibration Environment Ph.D. Thesis Concordia University Montreal, Quebec, Canada 1998
- Wu Xuting Rakheja Subhash Boileau Paul-Emile “Dynamic Performance of Suspension Seats Under Vehicular Vibration and Shock Excitation” Society of Automotive Engineers Technical Paper Series 1999-01-1304 1999
- Rakheja Subhash Computer-Aided Dynamic Analysis and Optimal Design of Suspension Systems for Off-Road Tractors Ph.D. Thesis Concordia University Montreal, Quebec, Canada 1983
- Afework Yohannes An Analytical and Experimental Study of Driver-Seat-Suspension Systems Masters Thesis Concordia University Montreal, Quebec, Canada 1991
- Boileau Paul-Emile A Study of Secondary Suspensions and Human Driver Response to Whole-Body Vehicular Vibration and Shock Ph.D. Thesis Concordia University Montreal, Quebec, Canada 1995
- Wan Yi An Investigation into Linear and Non-linear Optimal Seat Suspension Designs Ph.D. Thesis Marquette University Milwaukee, Wisconsin 1998
- Goodyear Industrial Products Super Cushion Air Springs --- Vehicular Applications Engineering Manual June 1997
- Inendino Louis V Development of a Dynamic Model of an Air-Ride Seat for On-Highway Trucks Masters Thesis University of Illinois Urbana, Illinois 2002
- Hafner Jan Delta Flexible Products, Inc. Personal Communication September 20 2002
- Wu Xuting Rakheja Subhash Boileau Paul-Emile “Study of Human-Seat Interactions for Dynamic Seating Comfort Analysis” Society of Automotive Engineers Technical Paper Series 1999-01-1303 1999
- Hofrichter Jim Seats, Incorporated Personal Communication September 16 2002
- Pollock D.S.G. A Handbook of Time-Series Analysis, Signal Processing and Dynamics Academic Press San Diego, California 1999
- Berghaus Donald Numerical Methods for Experimental Mechanics Kluwer Academic Publishers Boston, Massachusetts 2001