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

New method of indirectly measuring equivalent dynamic stiffness in multipoint-connecting packaging coupling interface

A technology of dynamic stiffness and a new method, applied in the field of dynamic stiffness testing, can solve the problems of difficulty in exciting and picking up vibration, and the accuracy cannot be guaranteed, so as to achieve the effect of convenient engineering application and avoid dependence.

Inactive Publication Date: 2015-02-04
JIANGNAN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the existing methods generally have the problem that the accuracy cannot be guaranteed for the measurement of the dynamic stiffness of the complex packaging coupling interface that contains multiple units mentioned above, especially due to the limitation of the physical space of the packaging coupling interface itself, it is difficult to excite and pick up vibration

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
  • New method of indirectly measuring equivalent dynamic stiffness in multipoint-connecting packaging coupling interface
  • New method of indirectly measuring equivalent dynamic stiffness in multipoint-connecting packaging coupling interface
  • New method of indirectly measuring equivalent dynamic stiffness in multipoint-connecting packaging coupling interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] The method for measuring the equivalent dynamic stiffness of the packaging coupling interface of the present invention comprises the following steps:

[0017] (1) Arrange sensors on the product to measure the frequency response function of the component level of the product [H A ] c(a)i(a ), [H A ] c(a)c(a) ;

[0018] (2) Arrange sensors on the vehicle to measure the frequency response function of the component level of the vehicle [H B ] o(b)c(b) ,[H B ] c(b)c(b) ;

[0019] (3) For products and vehicles, according to the actual logistics and transportation conditions, the coupling connection is carried out through the packaging, the acceleration sensor is arranged, and the horizontal frequency response function of the system is directly measured [H S ] o(b)i(a) ;

[0020] (4) Apply the following formula to calculate the dynamic stiffness of the packaging coupling interface

[0021] [ K c ] =...

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 high-precision method of indirectly measuring equivalent dynamic stiffness in a multipoint-connecting packaging coupling interface and belongs to the field of packaging. The high-precision method is mainly characterized in that the equivalent dynamic stiffness in the packaging interface is calculated according to a measured system level frequency-response function and a measured part level frequency-response function. The method includes following steps: (1) arranging a sensor and measuring the frequency-response functions: [HA]<c(a)i(a)>, [HA]<c(a)c(a)>, [HB]<o(b)c(b)> and [HB]<c(b)C(b)>, of a product and a vehicle; (2) performing packaging connection the product and the vehicle, arranging a sensor and measuring the system level frequency-response function [HS]<o(b)i(a)>; and (3) calculating the dynamic stiffness in the packaging coupling interface according to the measured system level frequency-response function and the measured part level frequency-response function. The method is free of shock excitation and vibration picking-up onto the packaging interface and the dynamic stiffness in the packaging interface is measured completely according to the measured frequency-response functions, so that the method is simple in engineering application and is high in precision.

Description

technical field [0001] The invention relates to the technical field of packaging coupling interface parameter identification, in particular to a testing method for the equivalent dynamic stiffness of the packaging coupling interface. Background technique [0002] The phenomenon of product damage in logistics is very serious, resulting in huge economic losses. Protective packaging can effectively reduce the logistics loss of products, and its design is based on the dynamic stiffness of the packaging interface. For the packaging coupling interface, it usually includes inner liner, outer packing box, pallet and other auxiliary fixing devices, etc., and their performance aggregates to form the dynamic stiffness of the complex packaging coupling interface. When the dynamic stiffness is large, the response of the packaged product may be amplified and cause product damage. When the dynamic stiffness is small, the deformation of the cushioning material will be very large, which req...

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
IPC IPC(8): G01N19/00
Inventor 王军段芳卢立新
Owner JIANGNAN UNIV
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