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Method for processing brake friction heat load data of automobile brake disc

A technology of automobile braking and processing methods, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of simple and single thermal loading of brake discs, and cannot accurately feedback the magnitude of frictional heat, and achieve reliable processing. method, the effect of improving the calculation accuracy

Active Publication Date: 2020-09-01
JIANGLING MOTORS
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional simulation, the thermal loading of the brake disc is simple and single
For example, the constant surface heat flux power (w / m^2) is evenly loaded on the friction surface. Obviously, this loading method cannot accurately feed back the actual dynamic friction heat

Method used

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  • Method for processing brake friction heat load data of automobile brake disc
  • Method for processing brake friction heat load data of automobile brake disc
  • Method for processing brake friction heat load data of automobile brake disc

Examples

Experimental program
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Embodiment

[0030] Example: see Figure 1-4 .

[0031] A method for processing brake friction heat load data of an automobile brake disc, the processing steps are as follows:

[0032] S1. Analyze the energy transformation during the braking process of the automobile brake disc;

[0033] S2. Calculate the total thermal power of the friction of the front and rear brake discs of the automobile;

[0034] S3. Calculating the proportionality constant k between the thermal power produced per unit area of ​​the brake disc of the automobile and the pole radius r;

[0035] S4. Obtain the heat flux q of the friction surface of the automobile brake disc tF function.

[0036] The energy transformation in the analysis of the automobile brake disc braking process described in step S1 is specifically:

[0037] 1) During the braking process of the brake disc, the kinetic energy reduction rate of the whole vehicle is Mv t a;

[0038] 2) Gravity work power on the ramp is ±Mgsinθ.v t , uphill is nega...

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Abstract

The invention discloses a method for processing brake friction heat load data of an automobile brake disc. The method comprises the following steps: establishing a functional relationship between thesurface heat flux qt on the friction surface of the automobile brake disc and the speed vt, the whole automobile mass M, the road slope angle theta, the rolling friction coefficient f, the braking force distribution coefficient beta, the wheel slip rate s, the braking acceleration a, the wind drag coefficient Cd, the lift coefficient Cl and the position r under the central polar coordinate of thefriction surface of the brake disc; and accurately capturing the friction heat generated on the brake disc, and obtaining the temperature field on the brake disc through accurate simulation. Accordingto the method, the simulation calculation result of the temperature field on the automobile brake disc is accurate and reliable, and the simulation calculation result can be used for guidance designof the automobile brake disc.

Description

technical field [0001] The invention relates to the field of thermal management simulation calculation of automobile brake discs, in particular to a processing method for data of friction heat load of automobile brake discs. Background technique [0002] With the continuous improvement of road conditions, in order to improve the transportation efficiency of automobiles, it is necessary to increase the speed of vehicles and increase the carrying weight. At the same time, in order to achieve the goal of light weight, the design of the brake disc is required to be miniaturized. Under the condition of meeting the requirements of automobile braking performance, the load and heat absorbed by the brake unit area are bound to be greatly increased. When the disc brake brakes, the brake disc is tightly pressed by the friction plate, which converts the kinetic energy of the car movement into heat energy and dissipates it, thereby achieving the purpose of car braking. During the brakin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/17G06F30/20G06F119/08G06F119/14
CPCG06F30/15G06F30/17G06F30/20G06F2119/08G06F2119/14Y02T90/00
Inventor 李伟段龙杨黄晖李小华陈春菊冯英辛建伟
Owner JIANGLING MOTORS
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