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http://dx.doi.org/10.7839/ksfc.2022.19.3.039

Review of Regulation for Rollover Test and Evaluation of Safety for Buses by using Simulation of Multi-body Dynamics  

Park, Seung Woon (Department of Mechanical Engineering, Inha University)
Choi, Yo Han (Department of Mechanical Engineering, Inha University)
Lee, Chul-Hee (Department of Mechanical Engineering, Inha University)
Publication Information
Journal of Drive and Control / v.19, no.3, 2022 , pp. 39-46 More about this Journal
Abstract
In South Korea, to evaluate the rollover safety of domestic vehicles, the maximum slope angle of the vehicle is specified, which is verified by the rollover safety test of driving vehicles. However, the domestic rollover safety test is not suitable for buses, because the small amount of static stability factor (SSF) will invalidate the rollover experimental equation due to the high center of mass position of buses. To solve the above problems, a dynamic model of the bus is prepared with assumptions of mass and suspension spring properties. Subsequently, the maximum slope angle of the model was computed by using the simulation of multi-body dynamics, and the result was compared with actual test results to validate the dynamics model. Also, the rollover Fishhook (roll stability) test was conducted in the simulation for driving model. During the simulation, roll angle and roll rate were calculated to check if a rollover occurred. Through the rollover simulation of buses, the domestically regulated formula for rollover safety and the procedure of rollover test for driving vehicles are evaluated. The conclusion is that the present regulation of rollover test should be reconsidered for buses to ensure to get the valid results for rollover safety.
Keywords
Multi-body dynamics analysis; Buses; Dynamics model; Maximum slope angle; Rollover Safety;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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