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Frictional resistance increasing method based on interface mechanical effect

A technology of frictional resistance and interface mechanics, applied in the direction of hydraulic resistance brakes, brake components, brake types, etc., can solve problems such as increasing frictional resistance, and achieve the effect of increasing frictional resistance, simple method and wide applicability

Active Publication Date: 2020-12-25
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for increasing frictional resistance based on interface mechanical effects, which is used to solve the problem of contradiction between increasing frictional resistance and reducing wear in conventional braking technology

Method used

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  • Frictional resistance increasing method based on interface mechanical effect
  • Frictional resistance increasing method based on interface mechanical effect

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Embodiment 1

[0021] The wall thickness is 5mm, the length is 40mm, and the width is 20mm. The plexiglass is used as the friction pair. The surface roughness Ra<0.008μm, the load is 1㎏, and the test friction resistance at room temperature is about 1.5N. Drop 1 to 2 μL of deionized water on the surface of the friction pair, and the estimated thickness of the liquid film is about 5 μm. Under the same conditions, the friction resistance is 14±2N, and during the test time of 200s, the friction resistance is relatively stable, and the friction resistance is increased by nearly 10 times. It is shown that the interfacial mechanical effect caused by a small amount of liquid between the surfaces of the friction pairs can greatly improve the relative resistance between the friction pairs. In addition, when the volume of deionized water between the friction pairs increased to 5 to 6 μL, the frictional resistance decreased to 3±1 N, indicating that the frictional resistance could be controlled by incre...

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Abstract

The invention relates to a frictional resistance increasing method based on an interface mechanical effect. The frictional resistance increasing method based on the interface mechanical effect comprises the following steps: a certain amount of liquid medium is injected between friction pairs, the liquid medium forms capillary bridges between the friction pairs, and the interface force generated atthe capillary bridges is inversely proportional to the geometric dimensions of the capillary bridges, so that the total adhesive force between friction pairs is improved, and the frictional resistance is increased, wherein the friction pairs are in surface contact, the surface roughness is less than 0.4 [mu]m, the liquid medium has good wettability on the surfaces of the friction pairs, the contact angle is not more than 60 degrees, and the thickness of a liquid film is between 0.5 [mu]m and 10 [mu]m. Friction resistance between the friction pairs is increased through interface mechanical properties, the braking performance can be greatly improved, and excessive abrasion to the friction pairs is avoided on the basis of the interface mechanical properties of liquid substances between the friction pairs.

Description

Technical field: [0001] The invention relates to the fields of mechanical engineering and interface mechanics, and specifically relates to a method for increasing frictional resistance based on interface mechanics effect. Background technique: [0002] When two objects in contact with each other move relative to each other or tend to move relative to each other, a force that hinders the relative movement will be generated on the contact surface. This force is called frictional force. The direction of the frictional force is opposite to the direction of the relative motion or tendency of relative motion of objects. The factors that affect the friction force mainly include the surface roughness of the friction pair, the material properties, and the presence or absence of lubrication. This frictional force that hinders the relative movement between objects has a negative effect on the structural movement performance in the mechanism with relative movement, such as the rotation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D57/00F16D65/00
CPCF16D57/00F16D65/00
Inventor 王宝郭娅吴剑峰王彩华赵玉岩吴琼
Owner NORTHEAST GASOLINEEUM UNIV
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