CN109322957B - A kind of axial direction ripple honeycomb sandwich panels shock resistance energy absorption device - Google Patents
A kind of axial direction ripple honeycomb sandwich panels shock resistance energy absorption device Download PDFInfo
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- CN109322957B CN109322957B CN201811292765.1A CN201811292765A CN109322957B CN 109322957 B CN109322957 B CN 109322957B CN 201811292765 A CN201811292765 A CN 201811292765A CN 109322957 B CN109322957 B CN 109322957B
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- Prior art keywords
- corrugated
- axial
- sandwich
- ripple
- layer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/128—Vibration-dampers; Shock-absorbers using plastic deformation of members characterised by the members, e.g. a flat strap, yielding through stretching, pulling apart
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a kind of axial ripple honeycomb sandwich panels shock resistance energy absorption devices, including upper layer corrugated sandwich board, intermediate axial ripple cellular sandwich layer and lower layer's corrugated sandwich board.The axial ripple cellular sandwich layer is that class hexagon composite construction is constituted by axial corrugated plating and triangular pipe.The upper layer and lower layer's corrugated sandwich board is made of upper panel, sinusoid corrugated plating and lower layer's plate, and upper layer enhances horizontal, longitudinal energy absorption characteristics with omnidirectional distribution in lower layer's corrugated sandwich board face.The present invention overcomes traditional hexagonal honeycomb structures when by impact loading the problem of existing larger initial peak value load; it avoids the serious initial damage caused by protection structure; and realize the stable gradual buckling pattern of each cell element wall surface of honeycomb; increase the ratio energy-absorbing of the platform force and structure when structure conquassation; more the impact energy of receiving is converted to the plastic deformation ability of structure, to improve the energy absorption capability of honeycomb.
Description
Technical field
The present invention relates to the technical fields of energy absorbing device, specifically, the present invention is a kind of axial ripple honeycomb folder
Core shock resistance energy absorption device, shock resistance energy absorption system of the device suitable for the fields such as aerospace vehicle, Vehicle Engineering
The explosion-proof safety device of system or nuclear energy equipment, naval ship structure.
Background technique
Strong impact loading is generated in structures such as aircraft naval vessels when the accidents such as impact, explosion or collision occur
Afterwards, so that it is generated strong impact vibration, cause structure serious plastic deformation and destruction occur, to make aircraft, naval vessels
Or vehicle loses the ability operated normally and even causes great life and property loss.How to guarantee that structure is rushed by strong dynamic load
Serious accident does not occur after hitting, it has also become the project extremely paid close attention in structure safety protection field.Therefore, honeycomb, light
The structures such as matter battenboard and perforated foams filling pipe are come into being.Endergonic structure is utilized when by impact loading
Plastic deformation effectively can convert impact energy to the plastic deformation ability of structure, to protect structure and the person peace of occupant
Entirely.
Wherein, cellular material is answered extensively as a kind of lightweight and the structure that has excellent performance and function integration engineering structure
For engineering fields such as Aeronautics and Astronautics, traffic and machinery.In addition, honeycomb has preferable energy absorption characteristics, comparing
A large amount of impact energy is can absorb under low stress level, therefore, honeycomb is achieved frequently as a kind of energy absorbing device
Extraordinary social and economic benefit.
However, the conquassation of honeycomb can generate biggish initial peak value load, directly during impact loading
Serious initial injury can be caused to structure or human body by connecing.In addition, with the rapid development of the technologies such as current aviation high-speed rail, people
Pursuing the higher speed of service always, traditional honeycomb can no longer meet structural plane to complicated strong Under Dynamic Load
Demand.
Therefore, under the premise of inheriting tradition honeycomb gradual buckling pattern, how higher initial spike to be avoided to carry
The energy absorption capability that can be improved honeycomb while lotus again is an extremely challenging job.For novel energy
The exploitation of absorption plant, the building of defense of resistance to impact system and reduction life and property loss have great significance.
Summary of the invention
The technology of the present invention solves the problems, such as problem: for traditional honeycomb in the process of absorbing impact, providing
It is a kind of to avoid initial peak value load while can be improved axial ripple honeycomb sandwich panels shock resistance energy absorption device of the material than energy-absorbing.
When the structure can effectively convert impact energy to the plastic deformation of structure when bearing the operating conditions such as explosion, impact or collision
Can, while avoiding injury caused by larger initial peak value load, for shock resistance security protection provide it is more convenient, economical and
The guarantee of safety.
In order to reach the goals above, the technical solution of the present invention is as follows: a kind of axial direction ripple honeycomb sandwich panels shock resistance energy-absorbing
Device, the device include upper layer corrugated sandwich board, intermediate axial ripple cellular sandwich layer and lower layer's ripple sandwich from top to bottom
Plate；The upper layer corrugated sandwich board and lower layer's corrugated sandwich board is sinusoid corrugated sandwich board structure；The axis of the centre
It is made of to ripple cellular sandwich layer sinusoid corrugated plating and triangular pipe, wherein sinusoid corrugated plating is instead of common hexagon bee
Each wall surface of nest, every three sine wave-shaped sheets have connected and composed the minimum unit of ripple honeycomb by a triangular pipe.
The amplitude of the upper layer corrugated sandwich board and the corrugated plating in lower layer's corrugated sandwich board is 5~10mm, corrugated periodic
It is distributed as 15~20mm；The axially vertical height and the height phase of triangular pipe of corrugated plating in intermediate axial ripple honeycomb
Number Deng, axial ripple is 5~15.Upper layer corrugated sandwich board and lower layer's corrugated sandwich board are respectively as the energy absorbing device
Upper and lower surfaces, can play the role of increasing overall structure rigidity, and intermediate axial ripple honeycomb is as the energy
The core apparatus of absorption structure-based plastic deformation can absorb impact kinetic energy when absorbing impact load, play surge guard
Function.Wherein, the axial ripple cellular sandwich layer is made of corrugated plating and triangular pipe, in three connected corrugated platings
Angle is 120 degree two-by-two in property face, and the plane where the sine bellows curve of ripple plate end face has been crossed to form triangular pipe two-by-two,
That is 3 corrugated platings are connected by a triangular pipe.Wherein, conventional planar thin-walled is replaced with corrugated plating thin-walled can
Initially softened with generating a degree of structure, to reduce the initial peak value load when absorbing impact load, is avoided to quilt
Protect the initial damage of structure.Triangular pipe absorbs more as main energy-absorbing component when can absorb impact load simultaneously
Impact kinetic energy improves structure and compares energy-absorbing.
Wherein, used by upper layer corrugated sandwich board, intermediate axial ripple cellular sandwich layer and lower layer's corrugated sandwich board
Material is one of aluminium alloy or steel, and used plate is prepared by cold-rolling process method, sinusoid corrugated plating
Pass through compression molding or punch forming preparation.
The principle of the invention lies in: a kind of axial direction ripple honeycomb sandwich panels shock resistance energy absorption device, generally metal material
The class hexagonal shaft being prepared to ripple honeycomb sandwich structures, upper and lower end face respectively with upper layer corrugated sandwich board and lower layer's wave
Line battenboard, to increase integrally-built bending stiffness and shock resistance.When structure is by impact loading, upper layer wave
Ripple sandwich layer in line battenboard, which is pressurized to burst, can provide portion of energy absorbability.Centre is made of corrugated plating and triangular pipe
Axial ripple honeycomb, the amplitude of corrugated plating and period can be adjusted according to the flexible in size of impact energy.
The present invention compared with prior art the advantages of:
(1) present invention can make as a kind of high specific strength, specific stiffness, shock proof axial ripple honeycomb energy absorbing device
To bear the security protection systems such as explosion, impact and strong collision, it is widely used in the engineering protections such as aerospace, ship and automobile
Field.
(2) compared to traditional energy absorbing structure, the present invention can be avoided generation when traditional structure absorbs impact load
Initial peak value load, reduce the serious initial injury caused by protection structure.Ripple honeycomb sandwich structures can simultaneously
The energy absorption capability for greatly improving structure provides safer guarantee to the security protection of structure and human body.
(3) present invention preparation and installation are easy to accomplish, and time-consuming is few, can meet the shock resistance demand of economic conditions.It simultaneously can
Amplitude and the period of axial corrugated plating are adjusted according to the size of impact energy to meet different energy absorption demands, had
Preferable controllability and flexibility.
Compared to traditional hexagon aluminum honeycomb structure, due to embedding in axial ripple honeycomb sandwich panels shock resistance energy absorption device
Intermediate axial ripple cellular sandwich layer is entered, has made it that there is lesser initial peak value load in Collapse of Concrete, so as to have
It is effectively prevented from and generates biggish overload in impact endergonic process, prevent to by the initial damage of protection structure.In addition, axial
Ripple cellular sandwich layer increases the triangular pipe structure being axially distributed again, can be improved mean crushing load when absorbing impact,
Thus enhance the shock resistance energy absorption capability of axial ripple honeycomb sandwich panels.
Detailed description of the invention
Fig. 1 is axial ripple honeycomb sandwich panels shock resistance energy absorption device；
Fig. 2 is axial ripple honeycomb sandwich panels shock resistance energy absorption device axonometric drawing；
Fig. 3 is axial ripple honeycomb sandwich panels shock resistance energy absorption device top view；
Fig. 4 is ripple honeycomb figure, wherein (a) is the top view of minimum unit, (b) is the axonometric drawing of minimum unit；
Fig. 5 is that finite element result is analyzed when axial ripple cellular type core energy absorbing device absorbs impact load；Wherein (a)
For the gradual fold failure mode of axial ripple honeycomb sandwich board shock resistance energy absorption device, (b) it is being crushed for the energy absorption device
Load displacement curve in the process；
Appended drawing reference meaning in figure: 1 is upper epidermis panel, and 2 be lateral wave card, and 3 be following table deck panels, and 4 be axial wave
Card, 5 be triangular pipe.
Specific embodiment
With reference to the accompanying drawing and example the present invention is described in detail, hereinafter by reference to attached drawing describe embodiment
It is exemplary, it is intended to it explains and proposes novel nested combination annulus shock resistance multilevel energy absorption plant in the present invention, without
Limitation of the present invention can be considered as.
As shown in Figure 1, a kind of axial ripple honeycomb sandwich panels shock resistance energy absorption device of the invention, generally by metal material
Expect the axial ripple honeycomb sandwich panels constituted, it is main including upper layer corrugated sandwich board, intermediate axial ripple cellular sandwich layer and
Lower layer's corrugated sandwich board.Upper layer corrugated sandwich board is mainly by 3 structure of upper epidermis panel 1, lateral wave card 2 and following table deck panels
At the construction of lower layer's corrugated sandwich board is identical as the construction of upper layer corrugated sandwich board, and the main distinction is upper and lower layer ripple sandwich
Corresponding lateral wave card perpendicular quadrature distribution in plate.
The core component of axial ripple honeycomb sandwich panels is the axial ripple cellular sandwich layer of centre as shown in Figure 2, should
Axial ripple cellular sandwich layer is mainly made of multiple axial corrugated platings 4 and triangular pipe 5, the vertical view of axial ripple honeycomb sandwich panels
Figure is as shown in Figure 3.Specifically, by the cell element wall surface that the traditional hexagonal honeycomb of axial corrugated plating substitution is smooth, connected three
The angle of neutral surface is 120 degree and is connected by the triangular pipe that a section is equilateral triangle between a axial direction corrugated plating, is constituted
Minimum unit as shown in Figure 4, minimum unit are orderly expanded into class hexagon axial wave shown in Fig. 3 around along face
Line honeycomb, wherein (a) is the top view of the minimum unit, it (b) is the axonometric drawing of the minimum unit.Axial ripple is cellular
Upper and lower surface has connected and composed whole ripple cellular type core energy absorbing device with upper and lower layer corrugated sandwich board again.
Below according to the energy of the finite element software Ls-dyna software introduction ripple cellular type core energy absorbing device of structure
Absorption characteristic.Pass through energy absorption characteristics of the FEM Simulation device when absorbing impact load effect.Initial impact
Speed v=20m/s, the quality of impacted object are 150Kg, and the height of axial corrugated plating is 20mm, with a thickness of 0.075mm, cell element
Wall surface length 6mm.The freedom degree of all nodes below the device is fixed, impacted object only has impact velocity vertically downward.
When the device absorbs impact load, upper layer corrugated sandwich board structure generates plastic deformation first and absorbs part energy, immediately
The raw stable buckling pattern as shown in Figure 5 of intermediate axial ripple cellular abscess, wherein (a) is that energy absorbing device of the present invention exists
Gradual fold conquassation mode when load is absorbed impact, is (b) energy absorbing device of the present invention under impact loading
Load displacement curve.From load displacement curve as can be seen that axial ripple honeycomb sandwich board and traditional hexagonal honeycomb sandwich
Plate is compared, and is eliminated initial load while being improved platform force, and then increases the ratio energy-absorbing of honeycomb.
In short, the corrugated honeycomb design of axial direction in the present invention, overcome traditional hexagonal honeycomb structure by
When impact loading the problem of existing larger initial peak value load, avoid the serious initial damage caused by protection structure
Wound, and realizes the stable gradual buckling pattern of each cell element wall surface of honeycomb, increase platform force when structure conquassation and
The ratio energy-absorbing of structure, more converts the impact energy of receiving to the plastic deformation ability of structure, to improve honeycomb
Energy absorption capability.
Above example is provided just for the sake of the description purpose of the present invention, is not intended to limit the scope of the invention.The present invention
Range be defined by the following claims.The various equivalent alterations and modifications for not departing from spirit and principles of the present invention and making,
It should all cover within the scope of the present invention.
Claims (6)
1. a kind of axial direction ripple honeycomb sandwich panels shock resistance energy absorbing device, it is characterised in that: described device is wrapped from top to bottom
Include upper layer corrugated sandwich board, intermediate axial ripple cellular sandwich layer and lower layer's corrugated sandwich board；The upper layer corrugated sandwich board
And lower layer's corrugated sandwich board is sinusoid corrugated sandwich board structure；The axial ripple cellular sandwich layer of the centre is by sinusoid wave
Card and triangular pipe are constituted, wherein every three sine wave-shaped sheets have connected and composed ripple honeycomb most by a triangular pipe
Junior unit.
2. a kind of axial ripple honeycomb sandwich panels shock resistance energy absorbing device according to claim 1, it is characterised in that:
The amplitude of the upper layer corrugated sandwich board and the corrugated plating in lower layer's corrugated sandwich board is 5~10mm, and corrugated periodic is distributed as 15
~20mm；The axially vertical height of corrugated plating in intermediate axial ripple honeycomb is equal with the height of triangular pipe, axial
The number of ripple is 5~15.
3. a kind of axial ripple honeycomb sandwich panels shock resistance energy absorbing device according to claim 1, it is characterised in that:
The material of the upper layer corrugated sandwich board, intermediate axial ripple cellular sandwich layer and lower layer's corrugated sandwich board be aluminium alloy or
The panel of one of person's steel, used corrugated sandwich board is prepared by cold-rolling process method, and sinusoid corrugated plating passes through
Compression molding or punch forming preparation.
4. a kind of axial ripple honeycomb sandwich panels shock resistance energy absorbing device according to claim 1, it is characterised in that:
Corrugated plating in the intermediate axial ripple cellular sandwich layer is connected by welding technique with triangular pipe, the intermediate axial wave of composition
Solidification method is connected with upper layer corrugated sandwich board, lower layer's corrugated sandwich board after line cellular type core layer passes through prepreg；Upper layer ripple folder
Solidification method is connected after corrugated plating in core plate and lower layer's corrugated sandwich board passes through prepreg.
5. a kind of axial ripple honeycomb sandwich panels shock resistance energy absorbing device according to claim 1, it is characterised in that:
The axial ripple cellular sandwich layer of the centre is made of axial sinusoid corrugated plating and axial triangular pipe, three connected axial directions
The angle between any two face in the median plane of sinusoid corrugated plating is 120 degree, and three axial sinusoid corrugated plating ends
Plane where the sine curve in face is crossed to form a triangle tubular structure two-by-two.
6. a kind of axial ripple honeycomb sandwich panels shock resistance energy absorbing device according to claim 1, it is characterised in that:
The sine bellows of the upper corrugated sandwich board and lower layer's corrugated sandwich board are respectively along the horizontal, longitudinal orthogonal of the energy absorbing device
Distribution, to guarantee the energy absorbing device in the harmony of horizontal and vertical energy absorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292765.1A CN109322957B (en) | 2018-11-01 | 2018-11-01 | A kind of axial direction ripple honeycomb sandwich panels shock resistance energy absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292765.1A CN109322957B (en) | 2018-11-01 | 2018-11-01 | A kind of axial direction ripple honeycomb sandwich panels shock resistance energy absorption device |
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| CN109322957A CN109322957A (en) | 2019-02-12 |
| CN109322957B true CN109322957B (en) | 2019-07-23 |
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