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

Low-frequency vibration reduction light metamaterial lattice structure and manufacturing method thereof

A lattice structure and metamaterial technology, applied in the field of engineering structure vibration reduction, can solve problems such as poor bearing capacity, and achieve the effects of large interconnection space, easy structural design, and low-frequency vibration suppression.

Pending Publication Date: 2021-02-12
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the technical research on thin-plate metamaterial structures is still mainly focused on homogeneous plates. Although thin-film or thin-plate metamaterial structures are expected to achieve good vibration damping effects, their load-bearing capacity is often poor.

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
  • Low-frequency vibration reduction light metamaterial lattice structure and manufacturing method thereof
  • Low-frequency vibration reduction light metamaterial lattice structure and manufacturing method thereof
  • Low-frequency vibration reduction light metamaterial lattice structure and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific examples. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0030] The unit cell of the metamaterial lattice structure in the embodiment of the present invention can prohibit the propagation of elastic waves within a certain frequency range, that is, the structure has an elastic wave forbidden band. The basic principle of the formation of the elastic wave forbidden band is the principle of local resonance, which can be expressed more intuitively by the dynamic equivalent mass. Such as figure 1 As shown, the unit cell is regarded as a whole with dynamic equival...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of engineering structure vibration reduction, in particular to a low-frequency vibration reduction light metamaterial lattice structure and a manufacturingmethod thereof. The metamaterial lattice structure is composed of two-dimensional periodically-arranged unit cells, and each unit cell comprises a base structure and a cuboid resonance unit embeddedinto the base structure, wherein the base body structure comprises an upper panel, a lower panel and an internal pyramid-shaped sandwich structure, the cuboid resonance units are located in the internal pyramid-shaped sandwich structure, each unit is composed of an upper part and a lower part, the upper part is made of a hard metal material, and the lower part is made of a glass fiber reinforced (GFR) nylon material. According to the invention, a broadband gap in a low-frequency range is generated by designing periodically arranged resonance unit structures, so that the purpose of efficient vibration reduction is achieved. The vibration damper has the characteristics that the bearing and vibration damping functions are integrated, the vibration damping frequency range is wide, the externalgeometrical characteristics of the structure are not changed, and the structure vibration can be effectively suppressed in a low-frequency range.

Description

technical field [0001] The invention relates to the technical field of engineering structure vibration reduction, in particular to a low-frequency vibration reduction lightweight metamaterial lattice structure and a manufacturing method thereof. Background technique [0002] As a new sandwich sandwich panel structure, the lightweight lattice structure consists of upper and lower panels and an inner lightweight truss core. Different from the traditional honeycomb sandwich structure and foam sandwich structure, the internal core of the lightweight lattice structure is composed of periodically arranged truss units. Typical lattice truss units include pyramidal, tetrahedral, 3 -D Kagome type etc. The unique open-hole truss structure of the lightweight lattice structure enables it to generate a larger interconnection space in addition to the traditional sandwich structure's light weight, high strength, impact resistance, energy absorption, and efficient heat dissipation. Theref...

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): B32B3/08B32B15/04B32B27/06B32B27/04B32B27/34B32B33/00B32B37/02
CPCB32B15/04B32B27/06B32B27/34B32B3/08B32B33/00B32B37/02B32B2260/021B32B2260/046B32B2307/56B32B2307/718B32B2307/558
Inventor 李冰李昊胡亚斌黄河源王文智侯赤赵美英万小朋
Owner NORTHWESTERN POLYTECHNICAL 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