Modeling and Simulation Analysis of Vehicle with Blown-out Tire
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摘要: 通过将轮胎简化为串联弹簧系统,对爆胎过程中轮胎径向特性变化进行了数学描述。结合爆胎轮胎切向力学特性变化,利用Simulink建立了14自由度爆胎整车模型。在100 km/h直线行驶与弯道行驶工况下,利用该模型对爆胎车辆侧向加速度、横摆角速度、车身侧倾角与Carsim进行对比仿真,所得结果较为一致。该模型对爆胎过程有了较为完整的数学描述,为爆胎车辆建模提供了基本框架。Abstract: Mathematical characterization of changes in tire radial properties when tire blow-out was made by simplifying tire to be a series spring system.Combining the changes in shear mechanical properties of tire,a 14-DOF whole vehicle model was established using Simulink/Matlab.Under straight and curve drive condition at 100 km/h,lateral acceleration,yaw acceleration and roll angle of a vehicle with blown-out tire were simulated by the proposed model and the Carsim model.Results of the two models show a good agreement.The proposed model provides a relatively comprehensive mathematical characterization for tire blow-out course and a basic frame for modeling of vehicle with blown-out tire.Based on work in this paper,further analysis in model expansion,vehicle dynamics after tire blow-out and stability control can be carried out.
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Key words:
- series spring system /
- tire blow-out /
- tire radial properties /
- vehicle model
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