CN111993718B - Composite sandwich board - Google Patents

Composite sandwich board Download PDF

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Publication number
CN111993718B
CN111993718B CN202010674647.8A CN202010674647A CN111993718B CN 111993718 B CN111993718 B CN 111993718B CN 202010674647 A CN202010674647 A CN 202010674647A CN 111993718 B CN111993718 B CN 111993718B
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China
Prior art keywords
tube
tube wall
pipe
wall
bottom plate
Prior art date
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Application number
CN202010674647.8A
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Chinese (zh)
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CN111993718A (en
Inventor
许述财
周剑飞
黄彬兵
殷绩伟
宋家锋
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Suzhou Automotive Research Institute of Tsinghua University
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Suzhou Automotive Research Institute of Tsinghua University
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Priority to CN202010674647.8A priority Critical patent/CN111993718B/en
Publication of CN111993718A publication Critical patent/CN111993718A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/011—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of iron alloys or steels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B32B3/20—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities

Abstract

The invention discloses a composite sandwich panel which comprises a top plate, a core layer assembly and a bottom plate which are sequentially arranged from top to bottom, wherein the core layer assembly comprises a plurality of core tubes which are sequentially arranged along the length extending direction of the sandwich panel, each core tube comprises a first tube body, each first tube body comprises a first tube wall and a second tube wall which are oppositely arranged, at least one of the two parts of the first tube wall and the second tube wall is obliquely arranged relative to the top plate and the bottom plate, one end parts of the first tube wall and one end part of the second tube wall are intersected to form a V-shaped structure, each first tube body also comprises a first arc tube wall connected between the other end parts of the first tube wall and the second tube wall, and each first arc tube wall is in contact with one part of the two parts of the top plate and the bottom plate which bear impact load and is fixedly connected with the first arc tube wall and one part of the top plate and the bottom plate. The composite sandwich panel has simple structure, and compared with the hexagonal honeycomb sandwich panel with consistent wall thickness, interval, height and other dimensions, the energy absorption effect of the sandwich panel with unit mass is obviously improved, and the mass is reduced.

Description

Composite sandwich board
Technical Field
The invention relates to the technical field of collision impact protection, in particular to a composite sandwich panel.
Background
With the development of military and civil fields such as aerospace, transportation and the like, the reduction of structural mass to reduce energy consumption has not been the only goal of structural design, and the characteristics of requiring a structure to be light and meeting multiple purposes have become a mainstream trend. The sandwich board is a composite structure with wider application, has light weight and high specific strength, can be used as a panel of various vehicles, can absorb low-speed and high-speed collision energy in civil vehicles, and can resist explosion impact in military vehicles so as to reduce injury to passengers. When the sandwich panel is impacted by collision or explosion, the controllable mode depends on buckling and crushing deformation of the sandwich panel, impact kinetic energy is rapidly converted into deformation potential energy, the current common sandwich panel structure form is a hexagonal honeycomb sandwich panel, but the problem of poor energy absorption effect exists under the condition of high-speed impact, especially explosion impact, so that the sandwich panel with light weight and high energy absorption property is designed, and the sandwich panel has high practical value in the fields of light weight design and safety protection of passengers.
Disclosure of Invention
The object of the present invention is to provide an improved composite sandwich panel, which aims at the problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a compound battenboard, includes roof, sandwich layer subassembly and the bottom plate that from the top down set up in proper order, sandwich layer subassembly includes a plurality of edges the core pipe that the length extending direction of battenboard set up in proper order, the core pipe includes first body, first body is including relative first pipe wall and the second pipe wall that sets up, first pipe wall with at least one part in two parts of second pipe wall is relative roof with the bottom plate slope sets up, first pipe wall with one end of second pipe wall intersects and forms V type structure, first body still includes the first arc pipe wall of connection between the other end of first pipe wall with the second pipe wall, first arc pipe wall with bear the conflict of one part of impact load and with its looks fixed connection in two parts of roof and the bottom plate.
Preferably, the first pipe wall and the second pipe wall are symmetrically arranged.
Preferably, the core pipe further comprises a second pipe body arranged above or below the first pipe body, the second pipe body comprises a third pipe wall and a fourth pipe wall which are oppositely arranged, at least one of the third pipe wall and the fourth pipe wall is obliquely arranged relative to the top plate and the bottom plate, one end part of the third pipe wall and one end part of the fourth pipe wall are intersected to form a V-shaped structure, the second pipe body further comprises a second arc pipe wall connected between the other end part of the third pipe wall and the other end part of the fourth pipe wall, the small end of the first pipe body is fixedly connected with the small end of the second pipe body, one of the first arc pipe wall and the second arc pipe wall is in contact with the top plate and is fixedly connected with the top plate, and the other part of the first arc pipe wall and the second arc pipe wall are in contact with the bottom plate and are fixedly connected with the bottom plate.
Further, the first pipe wall and the second pipe wall are symmetrically arranged, and the third pipe wall and the fourth pipe wall are symmetrically arranged.
Further, the core pipe further comprises a connecting part arranged between the first pipe body and the second pipe body, and the small end of the first pipe body and the small end of the second pipe body are fixedly connected with the connecting part respectively.
Further, the connecting part is a round tube with a round section.
Further, the first pipe body and the second pipe body are symmetrically arranged.
Preferably, two adjacent core tubes are fixedly connected to one side adjacent to each other along the length extension direction of the sandwich panel.
Preferably, the materials of the top plate and the bottom plate are the same, and the strength of the materials of the top plate and the bottom plate is higher than that of the material of the core tube.
Further, the top plate and the bottom plate are both made of low carbon steel materials, and the core tube is made of aluminum alloy materials.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: compared with hexagonal honeycomb sandwich plates with consistent wall thickness, interval, height and other dimensions, the composite sandwich plate has the advantages that the energy absorption effect of the sandwich plate with unit mass is obviously improved, and the mass is reduced.
Drawings
FIG. 1 is a perspective view of a composite sandwich panel of the present invention;
FIG. 2 is a front view of the composite sandwich panel of the present invention;
FIG. 3 is a side view of the composite sandwich panel of the present invention;
fig. 4 is an exploded view of the core tube of the composite sandwich panel of the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the composite sandwich panel of the invention comprises a top plate 1, a core layer assembly and a bottom plate 3 which are sequentially arranged from top to bottom.
The core layer assembly includes a plurality of core tubes 2, the plurality of core tubes 2 being disposed in order along the length extending direction of the sandwich panel, each core tube 2 extending from one end portion to the other end portion in the width direction of the sandwich panel.
As shown in fig. 1 to 4, each core tube 2 includes a first tube body 21. The first tubular body 21 includes a first tubular wall 211 and a second tubular wall 212. The first pipe wall 211 and the second pipe wall 212 are oppositely arranged, in this embodiment, the top plate 1 and the bottom plate 3 are arranged in parallel, at least one of the first pipe wall 211 and the second pipe wall 212 is obliquely arranged relative to the top plate 1 and the bottom plate 3, and one end parts of the first pipe wall 211 and one end part of the second pipe wall 212 intersect to form a V-shaped structure. The first pipe body 21 further includes a first arc-shaped pipe wall 213 connected between the other ends of the first pipe wall 211 and the second pipe wall 212, and the first arc-shaped pipe wall 213 abuts against and is fixedly connected with one of the two parts of the top plate 1 and the bottom plate 3, which is subjected to the impact load. Therefore, when the sandwich panel bears impact load, the impact load firstly acts on the top plate 1 or the bottom plate 3 and then is transferred to the core layer assembly, the core tube 2 forming the core layer assembly has a structure similar to the front chelating structure of mantis shrimps, is in a hammer-shaped structure and has a better energy absorption effect under high-speed collision or high-speed impact, so that the sandwich panel has a better energy absorption effect under high-speed collision or high-speed impact.
Each core tube 2 may further comprise a second tube body 22 arranged above or below the first tube body 21. The second pipe body 22 includes a third pipe wall 221 and a fourth pipe wall 222 which are oppositely arranged, at least one of the third pipe wall 221 and the fourth pipe wall 222 is obliquely arranged relative to the top plate 1 and the bottom plate 3, one end part of the third pipe wall 221 and one end part of the fourth pipe wall 222 are intersected to form a V-shaped structure, and the second pipe body 22 further includes a second arc pipe wall 223 connected between the other end parts of the third pipe wall 221 and the fourth pipe wall 222. The first tube 21 and the second tube 22 each have a large end and a small end, the first arc tube wall 213 is located at the large end of the first tube 21, and the second arc tube wall 223 is located at the large end of the second tube 22. The small end of the first pipe body 21 is fixedly connected with the small end of the second pipe body 22, one of the first arc pipe wall 213 and the second arc pipe wall 223 is abutted against the top plate 1 and fixedly connected with the top plate, and the other is abutted against the bottom plate 3 and fixedly connected with the bottom plate. In this way, the whole core tube 2 forms an arch structure, and the stress compression resistance is relatively better.
Each core tube 2 further includes a connecting portion 23 provided between the first tube body 21 and the second tube body 22, and the small end of the first tube body 21 and the small end of the second tube body 22 are fixedly connected with the connecting portion 23, respectively. In this embodiment, the connection portion 23 is a circular tube having a circular cross section. In this way, the stress concentration of the core tube 2 can be reduced, and the strength thereof can be improved.
Preferably, the first pipe wall 211 and the second pipe wall 212 are arranged symmetrically, and the first pipe wall 211 and the second pipe wall 212 are arranged obliquely with respect to the top plate 1 and the bottom plate 3. The third pipe wall 221 and the fourth pipe wall 222 are disposed symmetrically, and the third pipe wall 221 and the fourth pipe wall 222 are disposed obliquely with respect to the top plate 1 and the bottom plate 3. The first tube 21 and the second tube 22 are arranged symmetrically.
Along the length extension direction of the sandwich plate, two adjacent sides of the core tubes 2 are fixedly connected, or a smaller gap is formed between two adjacent sides of the core tubes 2, so that the structural strength of the whole core layer assembly is higher, and the bearable impact load is larger.
In this embodiment, the thicknesses of the top plate 1 and the bottom plate 3 are 1mm, the thicknesses of the first tube body 21 and the second tube body 22 are 1mm, and the thicknesses of the round tubes are 0.5mm. The whole core tube 2 forms a thin-wall hollow structure, which can effectively reduce the mass of the core tube 2, thereby reducing the mass of the sandwich panel.
The materials of the top plate 1 and the bottom plate 3 are the same, and the strength of the materials of the top plate 1 and the bottom plate 3 is higher than that of the material of the core tube 2, so that the sandwich plate forms gradient change on the materials, and the sandwich plate has better energy absorption effect while ensuring the strength. In this embodiment, the top plate 1 and the bottom plate 3 are both made of low carbon steel, and the core tube 2 is made of aluminum alloy.
In summary, when the sandwich panel is impacted by collision or explosion, the buckling and crushing deformation of the core tube 2 is relied on in a controllable mode, impact kinetic energy is rapidly converted into deformation potential energy, and compared with the hexagonal honeycomb sandwich panel with consistent wall thickness, interval, height and other dimensions, the energy absorption effect of the sandwich panel with unit mass is obviously improved, and the mass is reduced.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (7)

1. The utility model provides a compound battenboard, includes roof, sandwich layer subassembly and bottom plate that from the top down set up in proper order, its characterized in that: the core layer assembly comprises a plurality of core tubes sequentially arranged along the length extending direction of the sandwich plate, the core tubes comprise a first tube body, the first tube body comprises a first tube wall and a second tube wall which are oppositely arranged, at least one of the first tube wall and the second tube wall is obliquely arranged relative to the top plate and the bottom plate, one end parts of the first tube wall and the second tube wall are intersected to form a V-shaped structure, the first tube body further comprises a first arc tube wall connected between the other end parts of the first tube wall and the second tube wall, the core tubes further comprise a second tube body arranged above or below the first tube body, the second tube body comprises a third tube wall and a fourth tube wall which are oppositely arranged, at least one of the third tube wall and the fourth tube wall is obliquely arranged relative to the top plate and the bottom plate, the second pipe body also comprises a second arc pipe wall connected between the other ends of the third pipe wall and the fourth pipe wall, the small end of the first pipe body is fixedly connected with the small end of the second pipe body, one of the two parts of the first arc pipe wall and the second arc pipe wall is in contact with the top plate and is fixedly connected with the top plate, the other part is in contact with the bottom plate and is fixedly connected with the bottom plate, the first pipe body and the second pipe body are positioned in the same cavity formed between the top plate and the bottom plate, the core pipe also comprises a connecting part arranged between the first pipe body and the second pipe body, the small end of the first pipe body and the small end of the second pipe body are respectively fixedly connected with the connecting part, the connecting part is a circular tube with a circular section.
2. The composite sandwich panel according to claim 1, wherein: the first pipe wall and the second pipe wall are symmetrically arranged.
3. The composite sandwich panel according to claim 1, wherein: the third pipe wall and the fourth pipe wall are symmetrically arranged.
4. The composite sandwich panel according to claim 1, wherein: the first pipe body and the second pipe body are symmetrically arranged.
5. The composite sandwich panel according to claim 1, wherein: and along the length extending direction of the sandwich plate, two adjacent sides of the core pipe are fixedly connected.
6. The composite sandwich panel according to claim 1, wherein: the materials of the top plate and the bottom plate are the same, and the strength of the materials of the top plate and the bottom plate is higher than that of the material of the core tube.
7. The composite sandwich panel according to claim 6, wherein: the top plate and the bottom plate are both made of low carbon steel materials, and the core tube is made of aluminum alloy materials.
CN202010674647.8A 2020-07-14 2020-07-14 Composite sandwich board Active CN111993718B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010674647.8A CN111993718B (en) 2020-07-14 2020-07-14 Composite sandwich board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010674647.8A CN111993718B (en) 2020-07-14 2020-07-14 Composite sandwich board

Publications (2)

Publication Number Publication Date
CN111993718A CN111993718A (en) 2020-11-27
CN111993718B true CN111993718B (en) 2023-07-25

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Application Number Title Priority Date Filing Date
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113183564B (en) * 2021-05-08 2023-11-03 广州大学 Composite energy absorption layer, sandwich structure and preparation method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2923300Y (en) * 2006-05-16 2007-07-18 深圳职业技术学院 Plate-material honeycomb core structure
CN101705644B (en) * 2009-10-19 2011-01-05 李新桥 Corrugated paperboard with impact resistance and high anti-static strength
CN104129110B (en) * 2014-07-29 2016-01-13 西安交通大学 Metal corrugated plate of a kind of large span, thick panel and preparation method thereof
CN108486962A (en) * 2018-04-13 2018-09-04 山东太辉包装有限公司 A kind of novel paperboard and its processing method

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