Measuring method of tire longitudinal relaxation length

A length measurement, tire technology, applied in the direction of automobile tire testing, etc., can solve the problems of inability to obtain longitudinal slack length and high test cost, and achieve the effect of reducing test workload and simple operation

Active Publication Date: 2019-04-12
柳州中动智轮科技有限公司
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Problems solved by technology

This method obtains the approximate value of the longitudinal slack length of the tire, because the longitudinal stiffness of the tire in the static state is not exactly the same as that in the rolling state; and the measurement of the longitudinal slack length of the tire by this method requires two kinds of tire test benches, The test cost is relatively high; this method cannot obtain the longitudinal relaxation length corresponding to different tire rolling speeds and different longitudinal slip rate loading rates

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  • Measuring method of tire longitudinal relaxation length
  • Measuring method of tire longitudinal relaxation length
  • Measuring method of tire longitudinal relaxation length

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Embodiment Construction

[0020] A method for measuring the longitudinal slack length of a tire, the method is:

[0021] Install the tire on the flat-belt tire six-component force test rig, adjust the side slip angle and roll angle to zero, adjust the flat-belt tire six-component force test rig so that the tire reaches the required vertical load, and the test rig runs at a constant speed Drive the tire to roll, apply the driving and braking torque, control the longitudinal slip rate of the tire, so that the longitudinal slip rate changes according to the set period and amplitude of the triangle wave, obtain the test data of multiple cycles, and perform parameter identification to obtain the longitudinal slack length of the tire , including the following steps:

[0022] 1. Install the test tire on the flat-belt tire six-component force test bench, adjust the roll angle control mechanism of the flat-belt tire six-component force test bench so that the tire roll angle is zero, and adjust the flat-belt tir...

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Abstract

The invention discloses a measuring method of a tire longitudinal relaxation length. The measuring method comprises the steps that a tire is installed on a flat-belt type tire six-component force testbed, a side slip angle and a roll angle are adjusted to zero, and the flat-belt type tire six-component force testbed is adjusted so that the tire reaches a required vertical load; the testbed drivesthe tire to roll at a constant speed, and driving braking torque is applied; a longitudinal slip rate of the tire is controlled, and the longitudinal slip rate is enabled to change according to a setting period and triangular waves of amplitude; and test data of a plurality of periods are obtained, and the tire longitudinal relaxation length is obtained through parameter identification. Accordingto the measuring method of the tire longitudinal relaxation length, the operation is simple, and the test workload is reduced; the influence rules of different pavement speeds on longitudinal relaxation lengths can be studied; and the influence rules of the different longitudinal slip rate loading rates on the longitudinal relaxation lengths can be studied.

Description

technical field [0001] The invention belongs to the field of tire mechanical property testing, and in particular relates to a method for measuring the longitudinal slack length of tires. The triangular wave loading and rolling test of the longitudinal slip rate of tires is carried out on a flat-belt tire six-component force test bench to obtain sufficient and effective test data. The longitudinal slack length of the tire under a certain rolling speed and a certain longitudinal slip rate loading rate is calculated. The test method is simple to operate, the workload is small, and the test accuracy is high. Background technique [0002] The tire is the only part of the vehicle in contact with the road surface. The interaction force between the tire and the road surface is the root cause of the vehicle's movement. The mechanical properties of the tire have a very important impact on the vehicle's dynamic performance, handling stability, and ride comfort. The tire mechanical char...

Claims

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Application Information

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IPC IPC(8): G01M17/02
CPCG01M17/02
Inventor 芦荡卢磊索艳茹李论吕满意马尧王伟刘前进
Owner 柳州中动智轮科技有限公司
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