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Effect of parameters on roll dynamic response of an articulated vehicle carrying liquids
Shahram Azadi,Ali Jafari,Masoud Samadian 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.3
Directional response and roll stability characteristics of a partly filled tractor semi-trailer vehicle, with cylindrical tank, under differentparameters and conditions are investigated. The effective parameters and conditions in the stability of a tractor semi-trailer carrying liquidcan be considered as filled volume, kinematic viscosity of liquid cargo and vehicle steering input. The dynamic interaction of liquid cargowith the tractor semi-trailer vehicle is evaluated by integrating a dynamic slosh model of the partly filled tank with five-degrees-offreedomof a tractor semi-trailer tank model. The dynamic fluid slosh within the tank is modeled using three-dimensional Navier-Stokesequations, coupled with the volume-of-fluid equations and analyzed using FLUENT software. The coupled tank-vehicle model is subsequentlyanalyzed to determine the roll stability characteristics for different conditions and maneuvers. The results show effects of parametervariations on roll stability of the vehicle carrying liquid and also fluid's behavior in interaction with a vehicle's dynamics.