Pulled polycellular configuration and energy-absorbing structural member

A configuration and characteristic structure technology, applied in the direction of shock absorbers, springs/shock absorbers, elastic shock absorbers, etc., can solve the problems of auxetic material limitations, low stiffness, and application limitations of auxetic materials, and achieve strong resistance Effects of indentation performance and impact resistance

Inactive Publication Date: 2018-11-27
BEIHANG UNIV
View PDF7 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Auxetic materials have many excellent properties, but auxetic materials also have limitations in some aspects
Since most auxetic materials require a large number of pores, t...

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
  • Pulled polycellular configuration and energy-absorbing structural member
  • Pulled polycellular configuration and energy-absorbing structural member
  • Pulled polycellular configuration and energy-absorbing structural member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with specific embodiments.

[0033] Such as figure 1 As shown, the present invention is an energy-absorbing structural component based on an auxetic multicellular configuration, and its basic constituent units are as follows figure 2 A two-dimensional unit cell structure is shown, the unit cell includes a concave feature structure (B-G-L-M-H-C) in the middle, two identical arrow-shaped feature structures (A-F-K-G and D-H-N-I) on the left and right sides of the concave structure, and these two Each half of the concave structural unit cells (A-F-E-K and D-I-J-N) fixed to the concave angle vertices (points F and I) of the arrow-shaped structure. The unit cell of the auxetic multicellular configuration maintains the basic structural features of the concave structure and the arrowhead structure that constitute it, wherein the concave characteristic structure in the auxetic multicellular configur...

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 pulled multicellular configuration and an energy-absorbing structure component, comprising a plurality of unit cell structures, wherein each unit cell is obtained by cleverlysplicing two typical concave characteristic structures and two arrow-shaped structures; the pulled multicellular configuration and the energy-absorbing structure component comprise a plurality of unit cell structures. The vertices of the concave corners on the left and right sides of the concave eigenstructure are connected with two arrow-shaped eigenstructures respectively, and the vertices of the concave corners of the two arrow-shaped eigenstructures are connected with half of the transverse bars of the other two concave eigenstructures, which together form a single cell structure with anexpanded multicellular configuration; the vertices of the concave corners of the left and right sides of the concave eigenstructures are connected with each other. Then the two-dimensional stretched polycyclic configuration is obtained by planar array. The polycellular material has negative Poisson's ratio property, which shrinks when compressed, thus locally densifying the compressed region. Thisunique deformation characteristic makes the polycellular material have stronger indentation resistance and impact resistance. In addition, by changing the slenderness ratio and inclination angle of the rod, the elastic properties and compression strength of the rod are adjusted.

Description

technical field [0001] The invention relates to an auxetic configuration, in particular to an auxetic multicellular configuration and an energy-absorbing structural component. Background technique [0002] Compared with traditional positive Poisson's ratio materials, negative Poisson's ratio materials will shrink perpendicular to the direction of compression, which means that the geometric effect will be strengthened, and the particles or fibers in the compression area will produce local densification, making the material With higher compression resistance, indentation resistance, shear resistance and compression strength, it has great application potential in packaging and shock absorption and cushioning design. Studies have shown that negative Poisson's ratio characteristics can also produce higher fracture toughness and acoustic damping. In addition, the negative Poisson's ratio enables the negative Poisson's ratio honeycomb core to produce hemispherical deformation when...

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): F16F7/12
CPCF16F7/128
Inventor 杨振宇王欢卢子兴
Owner BEIHANG 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