CN110263455A - It is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems - Google Patents
It is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems Download PDFInfo
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- CN110263455A CN110263455A CN201910555728.3A CN201910555728A CN110263455A CN 110263455 A CN110263455 A CN 110263455A CN 201910555728 A CN201910555728 A CN 201910555728A CN 110263455 A CN110263455 A CN 110263455A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
Abstract
The invention discloses it is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, windmill thin-wall tube structure is made for metal material, composite structure is staggered by several windmill thin-wall tube separation structures and is formed, each windmill thin-wall tube separation structure is made of four blades, and it by central angle is that 270 ° of circular sliding slopes form that the cross sectional shape of each blade, which is two parallel lines,.The present invention passes through imitative windmill outer profile design, realize locking between adjacent windmill separation structure each in arbitrary direction in space impact process certainly, traditional absorption systems are overcome to need in external installation restraint device or in the defect of internal processing attachment device, greatly reduce the time cost and manpower and material resources cost of dismounting, also the deficiency of specific single direction impact can only be coped with from lock tube absorption systems by solving traditional dumbbells shape, it converts impact energy to using interstructural self-locking effect the flexible deformation and plastic dissipation of structure, can effectively absorb impact energy.According to alluvium energy and place actual conditions, it can freely adjust the number and the number of plies of every layer of placement windmill thin-wall tube separation structure of composite structure, simply and effectively improve the utilization rate of material.
Description
Technical field
The present invention relates to the technical fields of absorption systems, more precisely, be related to it is a kind of can the self-locking windmill of multidimensional
Thin-wall tube structure is easily assembled endergonic structure, anticollision damping of the absorption systems in aerospace, communications and transportation and critical facility
Aspect has great importance.
Background technique
In recent years, with the rapid development of the transport facilitys such as aircraft, vehicle and ship, collision, impact bring peace
Full accident also greatly increases, and seriously threatens people's life, property safety.Therefore how according to the loaded feature of structure, design
Flexible out, convenient, excellent in mechanical performance shock resistance absorption systems, it has also become the research hotspot in impact energy-absorbing field.
Thin-walled tubular structure is small due to its easy to process, low in cost, stabilization, deformation stroke length, initial spike power
Etc. advantages, be widely used all the time in surge guard and energy absorption.Therefore shock resistance absorption systems common in life
It is to assemble multiple rows of round tube mostly.
However, the absorption systems being made of multiple rows of round tube are absorbing impact load under conditions of any external constraint is not added
When lotus, lateral splashing can occur for round tube, substantially reduce energy absorbing efficiency, serious to cause secondary injury.It is usually taken in engineering
The biggish baffle of additional strength is installed on the boundary of round tube system, or between round tube add fixed device constrain round tube it
Between relative motion, avoid generating lateral splashing.But both methods all increases time and the people of installation in varying degrees
Power cost, cannot quickly, easily cope with burst accident.In order to solve this insufficient, dumbbell shaped thin-wall tube knot of round tube system
It has been suggested before structure, this set system can reduce time and the human cost of dismounting, but can only cope with rushing for specific direction
It hits.
Therefore, arbitrary direction in space impact can be coped with, be easy to dismount, economical and practical energy absorption system by designing one kind
System, is a meaningful job.For improve stock utilization, reply burst accident rapidly and efficiently, to the greatest extent
Reducing life and property loss has important value.
Summary of the invention
The purpose of the present invention is to provide it is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, should
Absorption systems are to be easy to dismounting, economical and practical energy absorber system, are provided for the protection that impact explodes more convenient, fast
Prompt, economic, safety guarantee.
The technical solution adopted by the present invention are as follows: it is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled energy-absorbing system
System, it is characterised in that: each windmill thin-wall tube separation structure is made of four blades, and the cross sectional shape of each blade is two parallel
Straight line is that 270 ° of circular sliding slopes form by central angle, and entire separation structure shows central symmetry feature, several windmill are thin
Wall pipe separation structure, which is staggered, forms multiple rows of multiple row composite structure, and adjacent two rows of, two array structures can reach in impact process
Self-locking effect；
The width w of the relatively narrow thin plate of thin-wall tube separation structure and the radius r of thin-wall circular tube meets w >=2r；
The axial overall length l of the thin-wall tube separation structure and the radius r of thin-wall circular tube meet l >=9r；
The thin-wall tube separation structure need to carry out chamfering, chamfer radius p in order to guarantee positive camber continuous and derivable, in corner point
Meet p≤r with thin-wall circular tube radius r；
Further, being staggered without in outside installation restraint device or inside between windmill thin-wall tube separation structure
Portion processes attachment device, can rearrange absorption systems.
Further, round tube radius r and thin-walled tube thickness t meet r/t > 5 in thin-wall tube separation structure.
Further, when being assembled into the self-locking absorption systems of various dimensions by windmill thin-wall tube separation structure, it need to only guarantee institute
There is the round tube of separation structure towards identical, is all clockwise or is all counterclockwise.
The principle of the invention lies in:
It is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, it is generally more made of metal material
Composite structure made of a windmill thin-wall tube is staggered.Each separation structure is made of four blades, the section of each blade
It by central angle is that 270 ° of circular sliding slopes form that shape, which is two parallel lines, and entire separation structure shows central symmetry feature.Wind
It is self-locking that the aspect ratio of vehicle shape thin-wall tube achievees the effect that adjacent two rows of, two array structures in impact process in any direction.Often
Layer places the number of windmill thin-wall tube and the number of plies can be according to alluvium energy and place actual conditions flexible modulation.
The advantages of the present invention over the prior art are that:
1, one kind of the present invention can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, in arbitrary direction in space
It is can be achieved in impact process from locking, i.e., without processing attachment device in outside installation restraint device or in inside, had stronger
Economy.
2, one kind of the present invention can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, which is readily disassembled
And installation, positioning device is not necessarily in assembling process between each separation structure, without technical difficulty, time-consuming is few for installation, can meet urgent
Situation shock resistance demand.
3, one kind of the present invention can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, it is thin by multiple windmill
Wall pipe separation structure composition can increase and decrease windmill thin-wall tube separation structure according to the actual conditions demand such as impact energy size and place
Number and the number of plies, the scale of the self-locking absorption systems of adjustment space multidimensional at any time has considerable flexibility and controllability.
Detailed description of the invention
Fig. 1 is combining structure schematic diagram according to the present invention.
Fig. 2 is composite structure cross-sectional view according to the present invention.
Fig. 3 is single windmill thin-wall tube separation structure schematic diagram according to the present invention.
Fig. 4 is the schematic diagram of the forward and backward cross section of single windmill thin-wall tube separation structure chamfering according to the present invention.
Fig. 5 is the schematic diagram in 1 numerical simulation of embodiment according to the present invention before the lateral load metamorphism of composite structure.
Fig. 6 is the schematic diagram in 1 numerical simulation of embodiment according to the present invention after the lateral load metamorphism of composite structure.
Fig. 7 is that composite structure laterally carries showing for energy displacement curve in 1 numerical simulation of embodiment according to the present invention
It is intended to.
Fig. 8 is the schematic diagram in 2 numerical simulation of embodiment according to the present invention before the deformation of composite structure longitudinal load-bearing.
Fig. 9 is the deformed schematic diagram of composite structure longitudinal load-bearing in 2 numerical simulation of embodiment according to the present invention.
Figure 10 is that composite structure longitudinal load-bearing energy displacement curve shows in 2 numerical simulation of embodiment according to the present invention
It is intended to.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
One kind of the present invention can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, as shown in Figure 1, generally
Composite structure made of multiple windmill thin-wall tube arrangements made of metal material；
To reach expected self-locking effect, the windmill thin-wall tube separation structure is assembled into the self-locking absorption systems of Spatial Multi-Dimensional
When, it need to only guarantee the round tubes of all separation structures towards identical, be all clockwise or be all counterclockwise, as shown in Fig. 2, all points of knots
The round tube direction of structure is all clockwise.
To reach expected self-locking effect, size can be selected freely in proportional region as needed, should meet thin-wall tube
The radius r of round tube and thin-walled tube thickness t meet r/t > 5, the width w and thin-walled of the relatively narrow thin plate of thin-wall tube separation structure in separation structure
The radius r of round tube meets w >=2r；
Embodiment 1: it is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems and laterally carry situation point
Analysis
By simulation calculation installed it is corresponding can the energy-absorbing effect that laterally carries of the self-locking absorption systems of multidimensional.It is logical
It crosses for 36 windmill thin-wall tube separation structures to be staggered and forms 6 row, 6 column composite structure.Single separation structure parameter is as follows: thin-walled
Round tube radius r=10mm, relatively narrow web width w=20mm, chamfer radius p=10mm, thickness t=0.5mm, axial length l=
367mm.Dynamic analog is carried out using ABAQUS/Explicit.
Setting alluvium speed per hour is v=72km/h=20m/s, impacts amount of substance m=133kg, calculates to obtain impact energy E=
1/2mv2=1/2 × 133 × 202J=2.66 × 104J.Force-displacement curve is obtained according to numerical simulation, integral can be combined
The energy that structure is absorbed can refer to the energy displacement curve that attached drawing (Fig. 7) composite structure laterally carries, and learn the maximum energy of absorption
Amount is Emax=2.41 × 104J absorbs the 90.6% of total impact energy.If using traditional round tube, in same perimeter strip
Under part constraint, round tube, which is directly broken up, occurs irregular splashing, and the ability for absorbing energy is very small, can be neglected.
Embodiment 2: it is a kind of can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems longitudinal load-bearing situation point
Analysis
By simulation calculation installed it is corresponding can the self-locking absorption systems longitudinal load-bearing of multidimensional energy-absorbing effect.It is logical
It crosses for 36 windmill thin-wall tube separation structures to be staggered and forms 6 row, 6 column composite structure.Single separation structure parameter is as follows: thin-walled
Round tube radius r=10mm, relatively narrow web width w=20mm, chamfer radius p=10mm, thickness t=0.5mm, axial length l=
367mm.Dynamic analog is carried out using ABAQUS/Explicit.
Setting alluvium speed per hour is v=144km/h=40m/s, and impact amount of substance is m=266kg.Calculate to obtain total impact energy
Measure E=1/2mv2=1/2 × 266 × 402J=2.128 × 105J.Force-displacement curve is obtained according to numerical simulation, integral can obtain
The energy absorbed to composite structure can refer to the energy displacement curve of attached drawing (Figure 10) composite structure longitudinal load-bearing, learn suction
Receipts ceiling capacity is Emax=2.05 × 105J absorbs the 96.33% of total impact energy.If using traditional round tube, same
Boundary condition constraint under, round tube, which is directly broken up, occurs irregular splashing, and the ability for absorbing energy is very small, can be ignored not
Meter.
The ability that self-locking absorption systems absorb energy is mainly determined by geometry and geometric dimension, and windmill is being kept to cut
In the case that face structure is constant, present invention provide that proportional region in, can appropriate adjustment structure size, do not change self-locking energy-absorbing
The self-locking effect of system.
Non-elaborated part of the present invention belongs to techniques well known.
The above, part specific embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, appoints
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all cover by what those skilled in the art
Within protection scope of the present invention.
Claims (4)
1. one kind can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, it is characterised in that: each windmill is thin
Wall pipe separation structure is made of four blades, and it is that 270 ° of circular arcs connect that the cross sectional shape of each blade, which is two parallel lines by central angle,
Connect, entire separation structure shows central symmetry feature, several windmill thin-wall tube separation structures be staggered form it is multiple rows of
Multiple row composite structure, adjacent two rows of, two array structures can achieve the effect that self-locking in impact process；
The width w of the relatively narrow plate of thin-wall tube separation structure and the radius r of thin-wall circular tube meets w >=2r；
The axial overall length l of the thin-wall tube separation structure and the radius r of thin-wall circular tube meet l >=9r；
The thin-wall tube separation structure need to carry out chamfering in order to guarantee positive camber continuous and derivable, in corner point, chamfer radius p with it is thin
Wall round tube radius r meets p≤r.
2. a kind of windmill thin-wall tube structure according to claim 1 is easily assembled the self-locking absorption systems of Spatial Multi-Dimensional, special
Sign is: being staggered without in outside installation restraint device or in inside processing connection between windmill thin-wall tube separation structure
Device can rearrange absorption systems.
3. one kind according to claim 1 can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, it is special
Sign is: round tube radius r and thin-walled tube thickness t meet r/t > 5 in thin-wall tube separation structure.
4. one kind according to claim 1 can the self-locking windmill thin-wall tube structure of multidimensional be easily assembled absorption systems, it is special
Sign is: when being assembled into the self-locking absorption systems of multidimensional by windmill thin-wall tube separation structure, need to only guarantee the circle of all separation structures
Pipe is all clockwise or is all counterclockwise towards identical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910555728.3A CN110263455B (en) | 2019-06-25 | 2019-06-25 | Windmill-shaped thin-walled tube structure energy absorption system capable of realizing multi-dimensional self-locking and easy to assemble |
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|---|---|---|---|
| CN201910555728.3A CN110263455B (en) | 2019-06-25 | 2019-06-25 | Windmill-shaped thin-walled tube structure energy absorption system capable of realizing multi-dimensional self-locking and easy to assemble |
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| CN110263455B CN110263455B (en) | 2021-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857193A (en) * | 2022-04-19 | 2022-08-05 | 福建工程学院 | Clamping groove type thin-walled tube energy absorption system easy to disassemble and assemble and capable of achieving three-dimensional self-locking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857193A (en) * | 2022-04-19 | 2022-08-05 | 福建工程学院 | Clamping groove type thin-walled tube energy absorption system easy to disassemble and assemble and capable of achieving three-dimensional self-locking |
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| CN110263455B (en) | 2021-01-01 |
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