When is it too late to brake?
| dc.contributor.author | Chen, Yang | en |
| dc.contributor.author | Zhang, Zichen | en |
| dc.contributor.author | Neighborgall, Campbell | en |
| dc.contributor.author | Ahmadian, Mehdi | en |
| dc.date.accessioned | 2022-12-12T17:52:10Z | en |
| dc.date.available | 2022-12-12T17:52:10Z | en |
| dc.date.issued | 2022-11-22 | en |
| dc.date.updated | 2022-12-12T14:58:27Z | en |
| dc.description.abstract | This paper provides a simulation analysis of the braking action that would prevent untripped rollovers of long combination vehicles (LCV) in turns when the entry speed into a turn exceeds the vehicle’s threshold. A co-simulation model is used to integrate the details of truck pneumatic brakes (developed in Simulink®) in a TruckSim® model. The models are validated with field-test data. Using the validated models, various braking initiation times (relative to the start of steering) are performed for a 150-ft J-turn. The simulation results reveal that at higher speeds, there is very little time for the driver to initiate braking before it is too late to avoid a rollover, referred to as Critical Brake Initiation Time (CBIT). For instance, at an entry speed of 40 mph (64 km/hr), applying the brakes for a fully-loaded truck beyond 1.0s would not prevent a rollover. The results also indicate that increasing the speed by 25% from 40 mph (64 km/hr) to 50 mph (80 km/hr), reduces CBIT by 90%, from 1.0s to 0.1s. The effect of cargo load on CBIT is less dramatic than speed. At 40 mph (64 km/hr), increasing the cargo load by 47%, from 15,000 lb. (6800 kg) to 22,000lb. (10,000 kg), decreases the CBIT by 17%, from 1.2s to 1.0s. | en |
| dc.description.version | Accepted version | en |
| dc.format.extent | Pages 1-24 | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | https://doi.org/10.1080/00423114.2022.2144386 | en |
| dc.identifier.eissn | 1744-5159 | en |
| dc.identifier.issn | 0042-3114 | en |
| dc.identifier.orcid | Ahmadian, Mehdi [0000-0003-1171-4896] | en |
| dc.identifier.orcid | Chen, Yang [0000-0002-3212-8688] | en |
| dc.identifier.uri | http://hdl.handle.net/10919/112855 | en |
| dc.language.iso | en | en |
| dc.publisher | Taylor & Francis | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.title | When is it too late to brake? | en |
| dc.title.serial | Vehicle System Dynamics | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |
| dc.type.other | Journal Article | en |
| pubs.organisational-group | /Virginia Tech | en |
| pubs.organisational-group | /Virginia Tech/Engineering | en |
| pubs.organisational-group | /Virginia Tech/Engineering/Mechanical Engineering | en |
| pubs.organisational-group | /Virginia Tech/All T&R Faculty | en |
| pubs.organisational-group | /Virginia Tech/Engineering/COE T&R Faculty | en |
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