Oil film stiffness and damping testing method based on experimental table of slide bearings

A sliding bearing, oil film stiffness technology, used in mechanical bearing testing and other directions

Inactive Publication Date: 2013-10-02
SHANGHAI UNIV
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing test methods for the stiffness and damping of the oil film of sliding bearings have the disadvantages of low test accuracy, cumbersome calculation process, and high measurement cost

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oil film stiffness and damping testing method based on experimental table of slide bearings
  • Oil film stiffness and damping testing method based on experimental table of slide bearings
  • Oil film stiffness and damping testing method based on experimental table of slide bearings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings. The present embodiment uses a thrust bearing test bench for testing.

[0022] A test method for oil film stiffness and damping based on a sliding bearing test bench, comprising the following steps:

[0023] The first step, with reference to the accompanying drawings, put the sliding bearing 4 to be measured on the bearing seat of the sliding bearing test bench, the bearing seat is installed with a relative displacement sensor 5 and an absolute displacement sensor 6, and the relative displacement sensor 5 and the absolute displacement sensor 6 are used for measuring Relative displacement of sliding bearing 4 and absolute displacement Install the force sensor 3 on the exciter 2 to measure the exciting force, connect the relative displacement sensor 5, the absolute displacement sensor 6 and the force sensor 3 with the data acquisition card 1 respectively, and t...

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 invention discloses an oil film stiffness and damping testing method based on an experimental table of a slide bearing. A relative displacement sensor and an absolute displacement sensor are mounted in the horizontal direction and the vertical direction of a bearing support to measure the relative displacement and the absolute displacement of the bearing; a force sensor is mounted on a vibration exciter to measure the exciting force; a variable frequency motor drives a main shaft to rotate so as to implement twice common-frequency excitation of the slide bearing, the LAB View software acquires related displacement and force data; then the acquired displacement and force data are subject to FFT (Fast Fourier Transform Algorithm) conversion respectively through MATLAB software to obtain an absolute displacement matrix, a relative displacement matrix and an exciting force matrix; finally, the oil film stiffness and damping are acquired through the following formula: K=real(Q), B=imag(Q) / omega, wherein Q is defined as in the specification, omega is the exciting force frequency, m is mass of the slide bearing, K is oil film stiffness and B is the oil film damping. The oil film stiffness and damping testing method improves the accuracy in testing the oil film stiffness and damping of the slide bearing, and has the advantages of high measuring accuracy and low measurement cost.

Description

technical field [0001] The invention relates to the field of testing the stiffness and damping of a sliding bearing oil film, in particular to a testing method for the stiffness and damping of an oil film based on a sliding bearing test bench. [0002] Background technique [0003] Sliding bearings are bearings that work under sliding friction. The sliding bearing works smoothly, reliably and without noise. Under oil lubrication conditions, the sliding surface is separated by the lubricating oil without direct contact, which can greatly reduce friction loss and surface wear. [0004] The quality of the dynamic performance of the sliding bearing directly affects the quality of the machine and the working efficiency. The oil film of the sliding bearing has a great influence on the life of the sliding bearing and its dynamic performance. Therefore, it is very important to measure the stiffness and damping of the oil film of the sliding bearing. However, the existing test met...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04
Inventor 孙云昊金健王小静
Owner SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap