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Energy absorbing structure

An energy-absorbing structure and unit cell technology, applied in sheet/board, building elements, elastic shock absorbers, etc., can solve the problems of single material, poor buffering and energy-absorbing effect, etc., to improve energy absorption performance and enrich mechanical behavior , Deformation mode complex and diverse effects

Pending Publication Date: 2019-05-03
NORTHWESTERN POLYTECHNICAL UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In related technologies, the material of the composite core in the energy-absorbing structure is single, and when the whole is subjected to impact or compression load, the deformation mode of the energy-absorbing structure is relatively simple, resulting in poor cushioning and energy-absorbing effect

Method used

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Embodiment Construction

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0043] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanying drawings directions for the example described above. It will be appreciated that if the illustrated device is turned over s...

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Abstract

The invention relates to the technical field of energy absorbing, in particular to an energy absorbing structure. The energy absorbing structure comprises a shell and a composite filler core. The shell is provided with a cavity. The composite filler core fills the cavity and is connected with the shell, and the composite filler core comprises a plurality of connected unit cell structures. At leasttwo of the multiple unit cell structures are different in Poisson's ratio. According to the energy absorbing structure, the unit cell structures with the different Poisson's ratios are combined intothe composite filler core, then the composite filler core fills the cavity of the shell, thus, deformation coupling between the unit cell structures with the different Poisson's ratios as well as deformation coupling between the composite filler core and the shell exists when the energy absorbing structure is subjected to impact or a compression load, that is, at this moment, the energy absorbingstructure can have a double coupling effect, the mechanical behavior of the energy absorbing structure is enriched under the double coupling effect, accordingly, the deformation patterns of the energyabsorbing structure are complex and varied, and therefore, the energy absorption capacity of the energy absorbing structure can be improved.

Description

technical field [0001] The present application relates to the technical field of energy absorption, in particular to an energy absorption structure. Background technique [0002] Energy absorbing materials are widely used in aerospace, automobile, shipbuilding and other industrial fields as well as in daily life to protect the safety and integrity of the human body, key components or precision devices. High safety requirements have prompted scientists and engineers to develop efficient energy-absorbing structures, which can slow down the impact load during collisions by buffering the mechanical behaviors of energy-absorbing structures such as buckling, folding, plastic deformation, and even fracture. [0003] In related technologies, the material of the composite core in the energy-absorbing structure is single, and when the whole is subjected to impact or compression load, the deformation mode of the energy-absorbing structure is relatively simple, resulting in poor cushion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16S1/00F16F7/12
Inventor 杨未柱岳珠峰董思辰李磊孙守义高宗战
Owner NORTHWESTERN POLYTECHNICAL UNIV
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