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Detailed Modeling of Pneumatic Braking in Long Combination Vehicles

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dc.contributor.authorZhang, Zichenen
dc.contributor.authorSun, Nanen
dc.contributor.authorChen, Yangen
dc.contributor.authorAhmadian, Mehdien
dc.date.accessioned2022-12-06T14:28:56Zen
dc.date.available2022-12-06T14:28:56Zen
dc.date.issued2021-08-23en
dc.date.updated2022-12-05T21:36:21Zen
dc.description.abstractA detailed model for pneumatic S-cam drum brake systems is developed and integrated into a multibody dynamic model for a 33-ft A-double long combination vehicle (LCV). The model, developed in TruckSim®, is used to study the dynamics of LCVs during straight-line braking at various speeds. It includes the response delay in braking that occurs from the time of application to when the brakes are applied at the drum for all axles. Additionally, the model incorporates an accurate characterization of brake torque versus chamber pressure at different speeds, along with the anti-lock brake system (ABS) dynamics, to yield an accurate prediction of the vehicle's deceleration during braking. The modeling results are compared with test results at speeds ranging from 20 mph to 65 mph on dry pavement. A close match between the model's prediction and test results is observed. The model is then used to perform a parametric study that evaluates braking distance and time for different pavement coefficients of friction (μp) at various speeds. The results indicate a distinct nonlinear relationship between μp and braking dynamics. At various μp, stopping time increases linearly with speed, as perhaps expected. Stopping distance, however, increases nonlinearly for a larger μp and linearly for a smaller μp versus speed. At a given speed, stopping time increases nonlinearly with a reduced μp, whereas stopping distance increases relatively linearly with a reduced μp.en
dc.description.versionAccepted versionen
dc.format.extentPages 245-258en
dc.format.mimetypeapplication/pdfen
dc.identifier02-14-03-0020 (Article number)en
dc.identifier.doihttps://doi.org/10.4271/02-14-03-0020en
dc.identifier.eissn1946-3928en
dc.identifier.issn1946-391Xen
dc.identifier.issue3en
dc.identifier.orcidAhmadian, Mehdi [0000-0003-1171-4896]en
dc.identifier.orcidChen, Yang [0000-0002-3212-8688]en
dc.identifier.urihttp://hdl.handle.net/10919/112798en
dc.identifier.volume14en
dc.language.isoenen
dc.publisherSAE Internationalen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleDetailed Modeling of Pneumatic Braking in Long Combination Vehiclesen
dc.title.serialSAE International Journal of Commercial Vehiclesen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherJournal Articleen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Engineeringen
pubs.organisational-group/Virginia Tech/Engineering/Mechanical Engineeringen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Engineering/COE T&R Facultyen

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