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Characterization of Aerodynamic Impact of Build Variation in Class 8 Tractor Trailers
Technical Paper
2020-01-5054
ISSN: 0148-7191, e-ISSN: 2688-3627
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Automotive Technical Papers
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English
Abstract
Build variation and tolerance stack up are unavoidable in the vehicle manufacturing process, not only for individual components and assemblies but also for the vehicle at large. Deviations across several components, each within tolerance limits, could ultimately have a significant effect on vehicle aerodynamic performance. The objective of this study is to quantify the impact of several such build variations on vehicle drag. A Lattice-Boltzmann-based simulation method was used in conjunction with design of experiments to construct a Kriging response surface interpolation model to efficiently characterize the impact of 17 different body and chassis build variations on the aerodynamic drag of a VNL 780 tractor trailer at a nonzero yaw angle. The top three parameters with greatest aerodynamic impact were then evaluated at the opposite symmetric yaw angle to understand the impact of build variation on vehicle asymmetry. Finally, a Monte Carlo-based stochastic sampling was applied to the Kriging response surface interpolation models to quantify the distribution of drag variation for a known distribution of build variation parameters. The methodology provides a systematic approach for characterizing trends, ranking sensitivities, and quantifying aerodynamic performance impact from build variation.
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Citation
Sowmianarayanan, B., Sengupta, R., Lee, C., and Ellis, M., "Characterization of Aerodynamic Impact of Build Variation in Class 8 Tractor Trailers," SAE Technical Paper 2020-01-5054, 2020, https://doi.org/10.4271/2020-01-5054.Data Sets - Support Documents
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References
- US Department of Energy 2000
- Saltzman , E. A Summary of NASA Dryden’s Truck Aerodynamic Research SAE Technical Paper 821284 1982 https://doi.org/10.4271/821284
- Cooper , K. Truck Aerodynamics Reborn - Lessons from the Past SAE Technical Paper 2003-01-3376 2003 https://doi.org/10.4271/2003-01-3376
- Cooper , K. and Leuschen , J. Model and Full-Scale Wind Tunnel Tests of Second-Generation Aerodynamic Fuel Saving Devices for Tractor Trailer SAE Technical Paper 2005-01-3512 2005 https://doi.org/10.4271/2005-01-3512
- Storms , B. , Satran , D. , Heineck , J. , and Walker , S. Detailed Experimental Results of Drag-Reduction Concepts on a Generic Tractor-Trailer SAE Technical Paper 2005-01-3525 2005 https://doi.org/10.4271/2005-01-3525
- Surcel , M. and Shetty , M. The Impact of Design, Position and Combination of Aerodynamic Devices on Drag and Fuel Consumption SAE Int. J. Commer. Veh. 8 2 722 731 2015 https://doi.org/10.4271/2015-01-2894
- Castellucci , P. and Salari , K. Computational Simulation of Tractor-Trailer Gap Flow with Drag-Reducing Aerodynamic Devices SAE Technical Paper 2005-01-3625 2005 https://doi.org/10.4271/2005-01-3625
- SAE International Surface Vehicle Recommended Practice Mar. 2010
- 2016
- 2016
- Lu , L. , Zhang , L. , Liu , S. , Le Loc'h , E. et al. Optimization of Aerodynamics and Engine Cooling Performance of a JMC Mid-Size Truck Using Simulation SAE Technical Paper 2010-01-2032 2010 https://doi.org/10.4271/2010-01-2032
- Sun , S. , Chang , Y. , Fu , Q. , Zhao , J. et al. Aerodynamic Shape Optimization of an SUV in Early Development Stage Using a Response Surface Method SAE Int. J. Passeng. Cars - Mech. Syst. 7 4 1252 1263 2014 https://doi.org/10.4271/2014-01-2445
- Yang , W. , Zhou , X. , Peng , J. , Li , B. et al. Optimization of the Underbody Layout of a Small Van for Better Aerodynamics Using Digital Simulation SAE Technical Paper 2014-01-0574 2014 https://doi.org/10.4271/2014-01-0574
- Novacek , J. and Sowmianarayanan , B. Characterization of Aerodynamic Design Spaces for Adjustable Tractor Surfaces SAE Int. J. Commer. Veh. 9 2 350 358 2016 https://doi.org/10.4271/2016-01-8147
- Heinecke , M. , Beedy , J. , Horrigan , K. , and Sengupta , R. Aerodynamic Study of a Production Tractor Trailer Combination using Simulation and Wind Tunnel Methods SAE Technical Paper 2010-01-2040 2010 https://doi.org/10.4271/2010-01-2040
- SAE International Surface Vehicle Recommended Practice Sept. 2013
- Jones , D. A Taxonomy of Global Optimization Methods Based on Response Surfaces Journal of Global Optimization 21 4 345 383 Dec. 2001 https://doi.org/10.1023/A:101277102557
- Sóbester , A.S. , Leary , S.J. , and Keane , A.J. On the Design of Optimization Strategies Based on Global Response Surface Approximation Models Journal of Global Optimization 33 1 31 59 2005 https://doi.org/10.1007/s10898-004-6733-1
- Cressie , N.A.C. The Origins of Kriging Mathematical Geology 22 239 252 1990