Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method and device for testing the dynamic stiffness of a vibration isolator

A test method and technology of vibration isolators, which are applied in vibration testing, measuring devices, testing of machine/structural components, etc., can solve problems such as inapplicable dynamic stiffness testing of large rated load vibration isolators, and achieve light structure and applicability Strong, high-precision effects

Inactive Publication Date: 2016-06-08
JIANGSU UNIV OF SCI & TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above three is suitable for the dynamic stiffness test of large rated load vibration isolators

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
  • A method and device for testing the dynamic stiffness of a vibration isolator
  • A method and device for testing the dynamic stiffness of a vibration isolator
  • A method and device for testing the dynamic stiffness of a vibration isolator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032]A kind of vibration isolator dynamic stiffness testing method of the present invention comprises the following steps:

[0033] Step 1: Use a static loading device (CMT5305 microcomputer-controlled electronic universal testing machine, hereinafter referred to as electronic universal testing machine) to apply an axial load to the vibration isolator 3 (generator vibration isolator) with a rated load of 16kN, and the load size is F It is equal to the rated load of the vibration isolator 3 of 16kN. When the electronic universal testing machine automatically records the load F=16kN, the axial deformation of the vibration isolator 3 is δ=3.792mm, and the static stiffness of the vibration isolator 3 under the rated load is calculated. k = F δ = 4.219 k ...

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 a method and a device for testing dynamic stiffness of a vibration isolator. The method comprises the steps of establishing an equivalent test model of a single-degree-of-freedom vibration system in a vibration isolation direction by using a static loading device, a combined vibration mass block and an elastic simply supported beam, measuring a frequency response function of the equivalent test model by an exciting method, and then indirectly obtaining the dynamic stiffness of the vibration isolator by virtue of a vibration equation, the similarity of the vibration system and the characteristics of the single-degree-of-freedom system. The method avoids the problem that the existing methods all need to simulate a rated load or a working load with an equivalent mass block in an ingenious way, and solves the problem that the test system is clumsy, high in test cost and test difficulty and even unachievable if the mass block is used for simulating high rated load or working load; the testing device is light and simple in structure, convenient to operate, and economical and practical; the method and the device are applicable to the dynamic stiffness tests of all single-axis vibration isolators, high in applicability, and especially capable of realizing testing of the dynamic stiffness of a large-rated load vibration isolator and ensuring high precision.

Description

technical field [0001] The invention relates to the technical field of engineering testing, in particular to a method and a device for testing the dynamic stiffness of a vibration isolator. Background technique [0002] The dynamic stiffness of a vibration isolator is its ability to resist deformation under dynamic load. It is a function of frequency and usually has obvious nonlinear characteristics. It is a key index to describe the vibration reduction performance of a vibration isolator. The dynamic stiffness test is an important part of the performance evaluation of the vibration isolator, and it is a test item that must be carried out before the vibration isolator is put into use. At present, the specific testing methods include the vibration excitation method and the hammering method. But no matter what method is used, it is necessary to use a mass block to simulate the rated load or working load. The mass block and the vibration isolator together form a spring mass sys...

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 Patents(China)
IPC IPC(8): G01M13/00G01M7/02
Inventor 宋向荣沈超明杨文兴
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com