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Relevant bibliographies by topics / Tractor trailer combinations – Oregon

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Academic literature on the topic 'Tractor trailer combinations – Oregon'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "Tractor trailer combinations – Oregon"

1

Abu-Hamdeh, Nidal H., and Hamid F. Al-Jalil. "Computer simulation of stability and control of tractor-trailed implement combinations under different operating conditions." Bragantia 63, no. 1 (2004): 149–62. http://dx.doi.org/10.1590/s0006-87052004000100015.

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The mechanics of a tractor-trailer system moving up and down sloping ground under different operating conditions was theoretically simulated. A computer program was developed to analyze the system to predict the effect of both the trailer loading weight and the slope angle on the tractor stability, traction ability, and drawbar loading. The program was used to analyze a tractor-trailer system moving at uniform motion up and downhill. The results of this analysis showed that the tractor becomes unstable when towing a 3750 kg trailer uphill at 28° slope angle. Insufficient traction occurred at slope angles ranging from 15° to 18° corresponding to trailer weight of 3750 to 750 kg. The parallel component of drawbar pull reached a maximum value of 17318 N when the trailer was pushing the tractor downhill at 30° slope angle. The normal component (normal to the tractive surface) showed similar maximum values for both uphill and downhill motions of the system. The use of computer analysis in this study provided a significant improvement in predicting the effect of different parameters on stability and control of tractor-trailer combination on sloping ground.

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Jílek, L., R. Pražan, V. Podpěra, and I. Gerndtová. "The effect of the tractor engine rated power on diesel fuel consumption during material transport." Research in Agricultural Engineering 54, No. 1 (March 3, 2008): 1–8. http://dx.doi.org/10.17221/710-rae.

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The authors of this paper determined in a field measurement how the change of the tractor engine power in a tractor-trailer combination affects the diesel fuel consumption related to the unit of transport output (l/tkm) and the transport performance (t/h) in the conditions of a mountainous region. Transport combinations (tractor – trailer) were compared that were formed by a tipping trailer connected to three tractors with different engine powers when passing allong a route with the gradient of 0°–5.5°. It is obvious from the results of these measurements that the diesel fuel consumption differed by up to 27% in individual combinations. The lowest specific consumption on the measured route was found in the combination with the tractor with the engine rated power of 50 kW (0.037 to 0.077 l/tkm), the highest consumption with the tractor with the rated engine power of 114 kW (0.056 to 0.093 l/tkm). The lowest transport performance on the measured route was found in the combination with the tractor with the engine rated power of 63 kW (19.37 t/h), the highest performance with the tractor with the rated engine power of 114 kW (43.42 t/h).

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Cole, D. J., and D. Cebon. "Influence of tractor—trailer interaction on assessment of road damaging performance." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 212, no. 1 (January 1, 1998): 1–10. http://dx.doi.org/10.1243/0954407981525759.

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The influence of dynamic interaction between tractor and trailer on the assessment of the road damaging performance of heavy goods vehicles is investigated using simple mathematical models. Tractor and trailer damage indices are used to quantify the ‘in-service’ road damaging performance of a simulated fleet of vehicles with parametric variations typical of highway traffic in the United Kingdom. Simulated results of assessment tests on individual tractor—trailer combinations are correlated with the performance of the simulated vehicle fleet. The main aim is to establish the characteristics of a ‘standard’ semi-trailer to be used in the assessment of tractors, and a ‘standard’ tractor for testing semi-trailers. It is found that measurement of suspension ‘frequency’ gives the poorest correlation with the damage indices, while the ‘dynamic aggregate force coefficient’ gives the best correlation. Correlation achieved when assessing trailers is higher than when assessing tractors. Optimum specifications for standard test tractors and trailers to maximize test accuracy are determined.

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Leuschen, Jason. "The Effects of Ground Simulation on Tractor-Trailer Combinations." SAE International Journal of Commercial Vehicles 6, no. 2 (September 24, 2013): 510–21. http://dx.doi.org/10.4271/2013-01-2454.

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HATANO, Tadashi, Atsunari HIROTA, and Harushige YANAGISAWA. "A Coupling Mechanism of Tractor and Semi-Trailer Combinations." Transactions of the Japan Society of Mechanical Engineers Series C 65, no. 636 (1999): 3355–61. http://dx.doi.org/10.1299/kikaic.65.3355.

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6

Yang, Xiujian. "Optimal Reconfiguration Control of the Yaw Stability of the Tractor-Semitrailer Vehicle." Mathematical Problems in Engineering 2012 (2012): 1–23. http://dx.doi.org/10.1155/2012/602502.

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An optimal reconfiguration control scheme based on control allocation (CA) is proposed to stabilize the yaw dynamics of the tractor-semitrailer vehicle. The proposed control scheme is a two-level structure consisting of an upper level of sliding mode yaw moment controller (SMYC) and a lower optimal brake force distributor (BFD). The upper SMYC is designed to follow the tractor yaw rate and the combination of the hitch angle and trailer slip angle and outputs the corrective yaw moment, respectively, for the tractor and the trailer. The optimal brake force allocation and reconfigurable control problem is transformed to a problem of error minimization and control minimization combination formulated by constrained weighted least squares (CWLS) optimization and further solved with active set (AS) algorithm. Simulation results reveal that the CA technique-based optimal reconfigurable control is rather effective for the tractor-semitrailer vehicle to enhance the yaw stability performance and the reliability in case of actuator failure thanks to the multiple-axle structure enriching the alternatives of possible actuator combinations in CA optimization.

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Xu, Hongguo, Yihua Zhang, Hongfei Liu, Shaosen Qi, and Weijuan Li. "Effects of configuration parameters on lateral dynamics of tractor–two trailer combinations." Advances in Mechanical Engineering 7, no. 12 (December 2015): 168781401561816. http://dx.doi.org/10.1177/1687814015618165.

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Dechao, Zeng, Zhu Yonghua, and Zhou Yiming. "A mathematical model for sideways overturning performance of tractor and trailer combinations." Journal of Terramechanics 26, no. 3-4 (January 1989): 193–200. http://dx.doi.org/10.1016/0022-4898(89)90035-9.

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Malviya, V., R. Mishra, and J. Fieldhouse. "CFD Investigation of a Novel Fuel-Saving Device for Articulated Tractor-Trailer Combinations." Engineering Applications of Computational Fluid Mechanics 3, no. 4 (January 2009): 587–607. http://dx.doi.org/10.1080/19942060.2009.11015293.

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MARUMO, Yoshitaka, Kenya SATO, Hiroki OAKI, and Akira AOKI. "Effects of Stabilization for Tractor and Three-Trailer Combinations on Lane-Keeping Performance." Proceedings of the Dynamics & Design Conference 2019 (2019): 533. http://dx.doi.org/10.1299/jsmedmc.2019.533.

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Dissertations / Theses on the topic "Tractor trailer combinations – Oregon"

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Ghuge, Harshavardhan Roy Christopher J. "Detached eddy simulations of a simplified tractor-trailer geometry." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Theses/GHUGE_HARSHAVARDHAN_18.pdf.

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Wacker, Thomas. "A preliminary study of configuration effects on the drag of a tractor-trailer combination." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25143.

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The effect of configuration changes and add-on devices on the drag reduction of a tractor-trailer is studied through wind tunnel tests using two 1/12-scale models. The configuration changes involve ground clearance, tractor-trailer gap, roof angle and back inclination while add-on devices include flow deflectors, skirts and gap seals. Moving surface boundary layer control as a means of drag reduction is also attempted. Both drag and pressure data are obtained to help identify local contributions. Results suggest that an optimum combination of configuration parameters can reduce drag up to 17% while the add-on devices resulted in a further decrease by a modest amount. The results with moving surface boundary layer control proved to be inconclusive.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate

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Doyle, Joshua Brian Hartfield Roy J. "Aerodynamic optimization for freight trucks using a genetic algorithm and CFD." Auburn, Ala, 2007. http://repo.lib.auburn.edu/2007%20Fall%20Theses/Doyle_Joshua_41.pdf.

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4

Chandrasekharan, Santhosh. "Development of a tractor-semitrailer roll stability control model." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196260360.

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Srinivasan, K. Venkatesh. "Implementation of an Unmanned Aerial Vehicle for New Generation Peterbilt Trucks." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849706/.

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As science and technology continue to advance, innovative developments in transportation can enhance product safety and security for the benefit and welfare of society. The federal government requires every commercial truck to be inspected before each trip. This pre-trip inspection ensures the safe mechanical condition of each vehicle before it is used. An Unmanned Aerial Vehicle (UAV) could be used to provide an automated inspection, thus reducing driver workload, inspection costs and time while increasing inspection accuracy. This thesis develops a primary component of the algorithm that is required to implement UAV pre-trip inspections for commercial trucks using an android-based application. Specifically, this thesis provides foundational work of providing stable height control in an outdoor environment using a laser sensor and an android flight control application that includes take-off, landing, throttle control, and real-time video transmission. The height algorithm developed is the core of this thesis project. Phantom 2 Vision+ uses a pressure sensor to calculate the altitude of the drone for height stabilization. However, these altitude readings do not provide the precision required for this project. Rather, the goal of autonomously controlling height with great precision necessitated the use of a laser rangefinder sensor in the development of the height control algorithm. Another major contribution from this thesis research is to extend the limited capabilities of the DJI software development kit in order to provide more sophisticated control goals without modifying the drone dynamics. The results of this project are also directly applicable to a number of additional uses of drones in the transportation industry.

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Bambe, Anita. "Measuring the non-pecuniary costs of triple trailer operation in Oregon : a contingent valuation approach." Thesis, 1994. http://hdl.handle.net/1957/35258.

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The purpose of this study is to measure the costs of the perceived safety threat from triple trailer operation in Oregon. This is done using the political referendum model of a common non-market valuation technique, contingent valuation. Specifically, the average cost of allowing triples will be found so that comparison with previously estimated benefits will provide a measure of net social welfare associated with triple trailer use. The data were collected through in-person interviews conducted in five regions in Oregon. Questions relating to the respondents' attitudes toward triple trailer trucks, driving experience, education and other demographics were asked. The empirical model estimates the probability that respondents will vote to ban triple trailers. The results of this study suggest that there are concerns about the safety of triple trailer operation. However, there seem to be still greater benefits; a result which is consistent with the recent ballot measure.
Graduation date: 1995

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7

Kosior, Jacob Michael. "Wind driven instability of tractor-trailer combinations." 1989. http://hdl.handle.net/1993/9565.

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Karmiadji, Djoko Wahyu. "Interaction between the tractor and trailer as a multibody system /." 1997. http://arrow.unisa.edu.au:8081/1959.8/84085.

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Books on the topic "Tractor trailer combinations – Oregon"

1

Martin, Phippard, ed. Highway heavy metal: The world's trucks at work. Poole: Blandford Press, 1986.

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2

Ransom, Candice F. Camiones grandes. Minneapolis: Lerner, 2007.

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3

Schaefer, Lola M. Semitrucks in action: By Lola M. Schaefer. Mankato, Minn: Capstone Press, 2011.

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American semi trucks. Osceola, WI: Motorbooks International, 1995.

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Big rigs in action. Osceola, WI, USA: Motorbooks International Publishers & Wholesalers, 1997.

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Heavy duty truck aerodynamics. Warrendale, PA: Society of Automotive Engineers, 1987.

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Doug, Grieve, ed. Evolution of cab-over-engine trucks. Hudson, WI: Iconografix, 2011.

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8

Manolis, Kay. Big rigs. Minneapolis, Minn: Bellwether Media, 2008.

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Big rigs. New York: Cobblehill Books, 1993.

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Maifair, Linda Lee. 18-wheelers. Mankato, Minn., USA: Capstone Press, 1991.

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Conference papers on the topic "Tractor trailer combinations – Oregon"

1

van de Wouw, Nathan, Paul Ritzen, Erik Roebroek, Zhong-Ping Jiang, and Henk Nijmeijer. "Active trailer steering for robotic tractor-trailer combinations." In 2015 54th IEEE Conference on Decision and Control (CDC). IEEE, 2015. http://dx.doi.org/10.1109/cdc.2015.7402853.

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2

von Glasner, Egon-Christian, Hans-Christian Pflug, Rolf Povel, and Klaus Wüst. "The Compatibility of Tractor/Trailer-Combinations During Braking Maneuvers." In International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/973282.

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Hagelthorn, G. Allan. "Preload Adjustment of Wheel Bearings on Tractor Trailer Combinations - Latest Developments." In International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2000. http://dx.doi.org/10.4271/2000-01-3496.

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Hagelthorn, G. Allan. "Preload Adjustments of Wheel Bearings on Tractor-Trailer Combinations - The Factors of Compliance." In SAE Commercial Vehicle Engineering Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2004. http://dx.doi.org/10.4271/2004-01-2693.

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Mclandress, Andrew S., Wolfram Wiese, James Turney, and Josef Loczi. "A Two-Dimensional External Aerodynamics Tool (EAT) for Simulating Airflow around Tractor-Trailer Combinations." In International Truck & Bus Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-2743.

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Hoover, Richard L., Scott B. Zagorski, and Tim Van Buskirk. "Air Disc and S-Cam Brake Stopping Performance Comparison for Class 8 Tractor and Trailer Combinations." In 2005 SAE Commercial Vehicle Engineering Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-3614.

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McAuliffe, Brian, and Mojtaba Ahmadi-Baloutaki. "An Investigation of the Influence of Close-Proximity Traffic on the Aerodynamic Drag Experienced by Tractor-Trailer Combinations." In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2019. http://dx.doi.org/10.4271/2019-01-0648.

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Atiqullah, Mir, Rigoverto Sanchez, and Benjamin Hamler. "Undergraduate Research on Trailer-Truck Aerodynamic Drag." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65218.

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The transportation industry is heavily dependent on ‘big rigs’ or semitrailers. Since its introduction during 1920s semitrailers have revolutionized the industry. However their geometrical designs have not evolved much to make them aerodynamically more streamlined, thus more fuel efficient. While over 5.6 million such commercial trailer trucks are registered in the country and with increasing diesel fuel prices, it is more important than ever to study their aerodynamics, redesign for reducing aerodynamic drag and help make these ‘big rigs’ more fuel efficient. Aerodynamic drag is the force that acts on a solid object moving in air due to difference in dynamic pressure developed around that object. Skin friction also causes resistance force which is small compared to pressure induced drag. Higher drag resistance, just like road and tire resistance, causes loss of energy and thereby lowers fuel mileage. Drag resistance is caused by both surface friction as well as air pressure difference around a moving object/vehicle. An ideal remedy is of course to completely redesign the shape and size of these semitrailers to conform to those with known low drag. Another intermediate approach would be to retrofit the existing semitrailers with devices that change the overall shape towards more aerodynamic ones. During the recent past a wide range of such add on devices have been introduced. Current research was directed in two fronts: CAD and Drag simulation as well as experimental drag testing. First a base CAD model and then various modifications were developed using an industry standard CAD package. These models were then imported into Computational Fluid Dynamics (CFD) software. These followed by modeling add-on devices to reduce drag. The simulations were repeated with various combinations of these add-on drag reducers. The areas targeted for drag reduction study included gap between tractor and trailer, lower sides of the trailer between front and rear wheel sets, and rear of the trailer. The results showed varying effectiveness of these add-on devices, individually and in combination. Scale models of the trailer truck were built using wood as well as Rapid Prototyping (RP) directly from CAD using polymer. These models were then tested in the wind tunnel at speeds between 35 and 75 miles per hour. The data and the trends in Cd values compared well with the simulated values. The overall CFD and scale model studies provided a comprehensive knowledge and understanding of the drag in semi-trailers and factors that affect it. Future studies may expand the varieties and locations of these devices as well as complete redesigns of the trailer-trucks.

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