Based on the results of tire handling test, the cornering properties of the tire at a small range of steer angles under different temperature are obtained, and the variation law of the tire cornering characteristic parameters with the tire temperature is obtained. By establishing a tread temperature model and finite element tire model considering temperature, the mechanism of tire mechanical properties with temperature is clarified, and the expression of tread stiffness and aligning stiffness considering temperature is obtained. Then, based on the above expression and the tire brush model considering the tire temperature state, a complex brush model is established. Through the model derivation, the relationship between the temperature and the tire cornering stiffness is obtained. The relationship is used as the basic expression formula to establish the UniTire cornering model considering tire temperature. In order to verify the correctness of the model, four kinds of temperature state cornering data are used for parameter identification, and the tire cornering properties in the other two temperature states is predicted. The error between the simulation results of the prediction model and the experimental results is very small, which effectively proves the predictive ability of the UniTire cornering model considering tire temperature. This research is helpful to improve the application of UniTire model, and provide theoretical and technical support for UniTire model indoor and outdoor expansion applications
:Based on the results of tire handling test of tires, the cornering properties of the tire under different wear conditions are studied, and the variation law of the tire lateral deflection characteristic parameters with the tire wear amount is obtained. By establishing a tread wear model to clarify the mechanism of tire wear characteristics change, the expression of tread stiffness, aligning stiffness and wear amount is obtained. Then, based on the expression and the tire brush model considering the tire wear state, a complex brush model of the tire considering the tread wear is established. The relationship between the wear amount and the tire cornering stiffness is obtained by the model derivation. The relationship is used as the basic expression formula of UniTire modeling to establish the UniTire cornering model considering the tread wear. In order to verify the correctness of the model, three kinds of wear state cornering slip data are used to fit, and the UniTire cornering model considering wear is obtained, the tire cornering properties in the other two wear states is predicted. The error between the simulation results of the prediction model and the experimental results is small, which effectively proves the predictive ability of the UniTire cornering model considering wear. The UniTire tire model helps provide theoretical and technical support for the UniTire model indoor and outdoor expansion applications. Key words:tire;wear;cornering stiffness;aligning stiffness;bush tire model;UniTire tire model 0 前言 * 随着汽车工业的发展,车辆在人们日常生活中
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