Longitudinal sliding test method for eliminating longitudinal force deviation of tire

A test method and longitudinal force technology, applied in the field of tire dynamic characteristics test research, can solve the problems of complex tire model form, difficult to establish a simple and high-precision tire model, etc. simple effect

Active Publication Date: 2014-12-24
中汽研汽车试验场股份有限公司
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Problems solved by technology

[0003]Due to the existence of the rolling resistance moment of the test tire, the longitudinal force Fx of the longitudinal slip characteristic of the tire——slip rate S The x relationship curve does not reach the origin, such as Figure 1 As shown, therefore, when using these test data to establish a tire model, the parameters of the model will be increased, and the form of the tire model will be more complicated, making it difficult to establish a simple and high-precision tire model, such as the well-known MagicFormula tire model i

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  • Longitudinal sliding test method for eliminating longitudinal force deviation of tire
  • Longitudinal sliding test method for eliminating longitudinal force deviation of tire
  • Longitudinal sliding test method for eliminating longitudinal force deviation of tire

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[0032] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] figure 1 is the longitudinal force F of the tire in the free rolling state x ——Slip rate S x Schematic diagram of the relationship curve, when the tire is rolling freely, due to the existence of the rolling resistance moment, the longitudinal force F x ——Slip rate S x The curve does not pass the origin, and the effective rolling radius of the tire at this time is where V x is the longitudinal velocity of the wheel, ω is the rolling velocity of the wheel, such as figure 1 Point B in .

[0034] figure 2 is the longitudinal force F of the tire in the "neutral rolling" state x ′——slip rate S x ′Schematic diagram of the relationship curve, when the wheel is "neutral rolling", the rolling resistance of the tire is zero and the effective rolling radius is where V x ′, ω′ are the longitudinal velocity and rolling ve...

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Abstract

The invention discloses a longitudinal sliding test method for eliminating the longitudinal force deviation of a tire and belongs to the field of experimental research of dynamic characteristic tests of tires. According to the longitudinal sliding test method for eliminating the longitudinal force deviation of the tire, the slip rate in the test process is controlled through the effective rolling radius when the rolling resistance of the tire is zero, the relation curve of the longitudinal force of the longitudinal sliding characteristic of the tire and of the slip rate passes through the point (0, 0), when a tire empirical or semi-empirical longitudinal force model is built through test data without longitudinal force deviation, horizontal deviation and vertical deviation do not need to be considered in the model, model parameters are reduced so that tire modeling can be simplified, and meanwhile, analysis and research of the test data are facilitated.

Description

technical field [0001] The invention belongs to the field of tire dynamic characteristic test research, in particular to a longitudinal sliding test method for eliminating tire longitudinal force offset. Background technique [0002] As the only part that connects the car to the road, tires have an important impact on the operating stability and smoothness of the car. Establishing a simple and high-precision tire model is of great significance to the dynamics research of the whole vehicle. The tire models used for the dynamics research of the whole vehicle mainly include theoretical models, semi-empirical models and empirical models. The mainstream of the current application is the semi-empirical model. However, the data needed to establish the semi-empirical and empirical models of tires can only be obtained through tire tests. The carcass rubber of a rolling tire has a viscoelastic hysteresis phenomenon, and the ground normal reaction force at the front point in the compr...

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Application Information

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IPC IPC(8): G01M17/02
Inventor 卢荡刘兵
Owner 中汽研汽车试验场股份有限公司
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