Abstract
In order to study the stability of a vehicle with inserts supporting run-flat tires after blowout, a run-flat tire model suitable for the conditions of a blowout tire was established. The unsteady nonlinear tire foundation model was constructed using Simulink, and the model was modified according to the discrete curve of tire mechanical properties under steady conditions. The improved tire blowout model was imported into the Carsim vehicle model to complete the construction of the co-simulation platform. CarSim was used to simulate the tire blowout of front and rear wheels under straight driving condition, and the control strategy of differential braking was adopted. The results show that the improved run-flat tire model can be applied to tire blowout simulation, and the performance of inserts supporting run-flat tires is superior to that of normal tires after tire blowout. This study has reference significance for run-flat tire performance optimization.
Highlights
As an important part of the vehicle driving system, tires are the only direct contact part between the vehicle and the road surface
CHEN set up an estimated calculation model of additional yaw torque leading by tire blowout based on Dugoff tire model [3]
LI proposed a modified linear time-varying model predictive control (LTV-MPC) method based on the Pacejka tire model, and the stability region of the vehicle with active front steering was expanded [4]
Summary
As an important part of the vehicle driving system, tires are the only direct contact part between the vehicle and the road surface. LI proposed a modified linear time-varying model predictive control (LTV-MPC) method based on the Pacejka tire model, and the stability region of the vehicle with active front steering was expanded [4]. CHEN proposed a comprehensive coordinated control scheme for longitudinal and lateral stability based on the brush tire model. In order to study the stability of the vehicle with inserts supporting run-flat tire after blowout, a dynamic model was established and modified based on the UniTire model. The results show that the improved run-flat tire model is consistent with the characteristics of vehicle tire blowout, and the optimal control strategy of inserts supporting run-flat tire after blowout in straight running condition was obtained by comparing the effects of braking, steering, and combined control.
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