Three-dimensional curved wall mixed phase regular quadrilateral chiral honeycomb

A regular quadrilateral, mixed-phase technology, applied in elastic shock absorbers, shock absorbers, springs, etc., can solve the problems of low safety, low stability of deformation mode, poor energy absorption effect, etc., to eliminate the influence of randomness , The force-displacement curve is smooth and easy to control

Pending Publication Date: 2022-02-18
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor energy absorption effect, low deformation mode stability and low safety during use of existing energy-absorbing protective devices in the background technology, the present invention provides a three-dimensional curved wall mixed-phase regular tetragonal chiral honeycomb

Method used

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  • Three-dimensional curved wall mixed phase regular quadrilateral chiral honeycomb
  • Three-dimensional curved wall mixed phase regular quadrilateral chiral honeycomb
  • Three-dimensional curved wall mixed phase regular quadrilateral chiral honeycomb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A three-dimensional curved wall mixed with regular tetragon chiral cell, which is a thin-walled structure, consistent thickness at each position. like Figure 1-5 As shown in the chirality of straight-wall honeycomb cellular skeleton (e.g. Figure 1-5The black dashed line is shown) and the surface of the straight wall honeycomb skeleton configurations by several honeycomb metades; the surface is spliced ​​to the honeycomb cell forming a three-dimensional curved wall mixed phase honeycomb. More specifically, the straight wall honeycomb skeleton and the curved surface are processed using a conventional method or 3D printing. Among them, the traditional method is to process a separate curved wall through the mold, then cut the appropriate length, the number of straight mouth, and the number of doubts of energy is spliced ​​together, and then bonded, welding, etc. Reinforcement in the manner. Each surface is connected to each other by the form of a stable structure of the positiv...

Embodiment 2

[0044] The present embodiment is based on the three-dimensional curved wall mixing of the three-dimensional curved wall of Example 1. Comparison with the analysis of the conventional straight wall honeycomb impact load.

[0045] This embodiment is an adhesive protection effect when the assembled suction protection device is subjected to a hunch impact load through a finite element numerical simulation. Dynamic simulation by Abaqus / ExPlicit.

[0046] The three-dimensional curved wall mixed phase positive quadrilateral honeycomb and conventional straight wall thickness is 1 mm, the height is 95mm, and the material is all the stainless steel, the three-dimensional curved wall mixed phase of the four-sided gear cellular honeycomb. The straight wall honeycomb silicon is 15mm long, and the side length of the conventional straight wall honeycomb is also 15mm. Three-dimensional curved wall mixed phase positive quadrangular honeycombs set two sets of models, top and underlying horizontal...

Embodiment 3

[0049] The difference in this embodiment is that the number of the honeycomb cell is disposed in accordance with the destructive force of the actual safety accident, and the number of curved surfaces is adapted to the number of honeycomb metals.

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Abstract

The invention discloses a three-dimensional curved wall mixed phase regular quadrilateral chiral honeycomb, and belongs to the technical field of safety protection. The chiral honeycomb is composed of a straight-wall honeycomb framework and curved surfaces, wherein the straight-wall honeycomb framework is composed of honeycomb cell elements, and the curved surfaces abut against the adjacent curved surfaces when being impacted; and the curved surfaces are spliced on the honeycomb cell elements to form the three-dimensional curved wall mixed phase chiral honeycomb. Compared with the prior art, the three-dimensional curved wall mixed phase chiral honeycomb has the beneficial effects that the adjacent curved surfaces of the three-dimensional curved-wall mixed-phase chiral honeycomb abut against each other to dissipate energy, a novel energy absorption mechanism is formed, an advantage that a force-displacement curve of a traditional straight wall honeycomb structure is stable is kept, and the total energy absorption amount and specific energy absorption are greatly improved on the premise of not wasting extra space. In addition, axial rigidity of the curved surfaces with wide upper parts and narrow lower parts is also greatly improved, and an average value of force-displacement curves can be greatly improved.

Description

Technical field [0001] The present invention relates to the field of security protection technology, and more particularly, to a three-dimensional curved wall mixed phase of tetragonal chiral positive cells. A mixed phase of the three-dimensional curved wall as a chiral cellular energy absorbing protective means for protection of safety technology. Background technique [0002] In recent years, the impact of emergency incidents and the development of technology to improve the level of tools and equipment, collision, explosion burst frequency and destructive capacity has been improving the safety of persons and property caused serious damage. Therefore, the design of a highly efficient energy absorption performance, stable deformation mode impact guard, is important for security engineering field. [0003] First, the structure of the conventional energy-absorbing deformation elements rely dissipate energy, but rely on the traditional mechanism of energy absorption can be dissipate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/12
CPCF16F7/121F16F7/128F16F2224/0225
Inventor 杨奎坚饶立宇朱威禹胡玲玲李泽凯
Owner SUN YAT SEN UNIV
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