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A New Tire Vertical Pressure Distribution Function, Algorithm and Test System

A pressure distribution and tire technology, applied in the algorithm and test system, the new tire vertical pressure distribution function field, can solve the problems of low precision, complex model, can not well reflect the tire rolling direction, etc., to facilitate testing and calculation simple effect

Active Publication Date: 2018-01-26
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the most widely used tire vertical pressure distribution function is the parabolic function, which has a simple structure, low precision, and cannot reflect the rolling direction of the tire well; any pressure distribution function constructed by the research team of Jilin University where η(u)=A(1-u 2n )(1+λu 2n )(1-Bu), Although the accuracy is high, it can also reflect the rolling direction of the tire, but the model is too complicated, and the solution calculation is cumbersome

Method used

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  • A New Tire Vertical Pressure Distribution Function, Algorithm and Test System
  • A New Tire Vertical Pressure Distribution Function, Algorithm and Test System
  • A New Tire Vertical Pressure Distribution Function, Algorithm and Test System

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the present invention provides a tire vertical pressure distribution algorithm, including the following steps:

[0040] Step S1, determine the average pressure module;

[0041] Step S2, obtaining the longitudinal length in the grounding footprint;

[0042] Step S3, obtain the bias coefficient; and

[0043] Step S4, construct the tire vertical pressure distribution function.

[0044] Wherein, the average pressure module is determined in the step S1, that is, the average pressure module is determined by the tire structure and material properties.

[0045] And the bias coefficient relates to the wheel model and acceleration, and is suitable to be obtained by measurement by a measurement unit, such as but not limited to a Tekscan pressure distribution measurement unit.

[0046] Such as figure 2 with image 3 As shown, the vertical pressure distribution of the tire is

[0047] Where Is the average pressure module, where G is the tire shear modulus, h is the ...

Embodiment 2

[0052] Such as Figure 4 As shown, on the basis of Example 1, the present invention also provides a tire vertical pressure distribution test system, including:

[0053] Pressure distribution function building module, average pressure determination module, longitudinal length calculation module in grounding footprint, and measurement module suitable for obtaining offset coefficient;

[0054] The pressure distribution function construction module is adapted to be connected with the average pressure determination module, the longitudinal length calculation module in the grounding footprint and the measurement module to construct the tire vertical pressure distribution function;

[0055] And through the tire vertical pressure distribution function to test the tire vertical pressure distribution.

[0056] Such as figure 2 with image 3 As shown, the vertical pressure distribution of the tire is

[0057] Where Is the average pressure module, where G is the tire shear modulus, h is the sid...

Embodiment 3

[0063] Such as figure 2 with image 3 As shown, the present invention also provides a tire vertical pressure distribution function,

[0064] The vertical pressure distribution of the tire is

[0065] Where Is the average pressure module, where G is the tire shear modulus, h is the sidewall height, and R is the tire radius;

[0066] Δ is a bias coefficient, the bias coefficient relates to the wheel model and acceleration, Δ∈[-0.3, 0.3]; the bias coefficient is suitable for measurement by a Tekscan pressure distribution measurement unit.

[0067] Is a parabolic distribution module, where a is half of the longitudinal length in the grounding footprint, It is the longitudinal relative coordinate value in the grounding footprint.

[0068] The longitudinal length of the grounding footprint 2a is suitable for passing the vertical stiffness k z And vertical load F z Solve, namely

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Abstract

The present invention relates to a new tire vertical pressure distribution function, algorithm and testing system. The tire vertical pressure distribution algorithm includes the following steps: step S1, determine the average pressure module; step S2, obtain the longitudinal length of the ground contact footprint; step S3, obtaining the bias coefficient; and step S4, constructing the tire vertical pressure distribution function; the present invention solves the technical problem that the traditional tire vertical pressure distribution function uses a parabolic function, which causes low precision and cannot well reflect the tire rolling direction ; and combined with the average pressure module, the longitudinal length of the contact patch and the bias coefficient, a simple and accurate tire vertical pressure distribution function is constructed, which is convenient for testing the tire vertical pressure distribution.

Description

Technical field [0001] The invention relates to a pressure distribution function, in particular to a new tire vertical pressure distribution function, algorithm and testing system. Background technique [0002] Tire vertical pressure distribution is an important part of tire mechanics theory. Tire vertical force distribution has an important influence on the driving and braking performance of automobiles. Nowadays, the most commonly used tire vertical pressure distribution function is the parabolic function. This kind of distribution function has a simple structure and low accuracy, which cannot reflect the tire rolling direction well; the arbitrary pressure distribution function constructed by the research team of Jilin University Where η(u)=A(1-u 2n )(1+λu 2n )(1-Bu), Although the accuracy is high, it can also reflect the rolling direction of the tire, but the model is too complicated and the solution calculation is cumbersome. Summary of the invention [0003] The purpose of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00G06F19/00
Inventor 李波贝绍秩赵景波张兰春王永志汪伟
Owner JIANGSU UNIV OF TECH
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