Measuring method and measuring device of elastohydrodynamic lubrication line contact pressure based on photoelasticity

An elastohydrodynamic lubrication line and contact pressure technology, which is applied in the application of optical methods to fluid pressure measurement, etc., to achieve high-resolution effects

An elastohydrodynamic lubrication line and contact pressure technology, which is applied in the application of optical methods to fluid pressure measurement, etc., to achieve high-resolution effects

CN103063355AActive Publication Date: 2013-04-24SOUTH CHINA UNIV OF TECH
3 Cites 19 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Measuring method and measuring device of elastohydrodynamic lubrication line contact pressure based on photoelasticity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The implementation of this law will be further described below in conjunction with the accompanying drawings and examples, but the specific implementation and protection scope of the present invention are not limited thereto.

[0020] Such as figure 1 , the photoelastic elastohydrodynamic lubrication line contact pressure measurement device consists of a stereo microscope 5, an imaging recording device 6 (such as a video camera), a polarizer 19, an analyzer 4, a 1 / 4 wave plate 3, a collimated light source 18, and an upper test Sample 1, lower sample 2, loading mechanism 17, longitudinal sliding table 10, X-Y direction sliding table 8, bench 9 and so on. The upper sample 1 is a thin disc made of transparent photoelastic material, and the lower sample 2 is a stepped shaft made of photoelastic material or metal material. The upper sample 1 can be driven and rotated by the first motor 11 through the synchronous belt. The upper sample 1 and the motor 11 are installed o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The utility model discloses a measuring method and a measuring device of elastohydrodynamic lubrication line contact pressure based on photoelasticity. According to the measuring method of the elastohydrodynamic lubrication line contact pressure based on the photoelasticity, a friction test sample of elastohydrodynamic lubrication is made of transparent photoelasticity materials, a friction area is irradiated by polarized light, the friction area is observed in an amplified mode through a microscope in the direction of a light source after a polarizing film is detected, photoelasticity strips appear in a friction pair in the contact area irradiated by the polarized light, oil film pressure in the contact area can be displayed and measured in real time after calculating and marking, and resolution ratio of the pressure is determined by the amplification ability of the microscope which is used and the resolution ratio of a camera. The measuring device of the elastohydrodynamic lubrication line contact pressure based on the photoelasticity comprises a collimation light source, a polarizer, the friction contact area, an analyzer, a stereoscopic microscope and an imaging recording device in sequence in the light path direction. According to the measuring method and the measuring device of the elastohydrodynamic lubrication line contact pressure based on the photoelasticity, distribution of pressure in the elastohydrodynamic lubrication line contact area can be measured with high resolution ratio and in real time.

Description

technical field [0001] The invention relates to the technical field of oil film pressure measurement in an elastohydrodynamic lubrication contact area, in particular to a photoelastic-based elastohydrodynamic lubrication line contact pressure measurement method and device. Background technique [0002] Elastohydrodynamic lubrication usually occurs in contacts such as gear contact pairs, rolling bearings and cam pairs. In this type of contact, the relative motion of the two surfaces rubbing against each other brings the lubricant into the contact area. Since it is a point or line contact, and the stiffness of the two surfaces is high, the actual contact area of ​​the contact area is usually small, so the contact Stress is greater. Accurate measurement of oil film pressure inside and between friction pairs in the contact area of ​​elastohydrodynamic lubrication line is a basic problem in the field of elastohydrodynamic lubrication and friction. [0003] Accurate measuremen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
24 Apr 2013
Publication
CN103063355A
IPC
G01L11/02
Inventors
何军; 黄平