CN109703793A - Buffering energy-absorbing recyclable device design method and buffering energy-absorbing recyclable device - Google Patents
Buffering energy-absorbing recyclable device design method and buffering energy-absorbing recyclable device Download PDFInfo
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- CN109703793A CN109703793A CN201910004334.9A CN201910004334A CN109703793A CN 109703793 A CN109703793 A CN 109703793A CN 201910004334 A CN201910004334 A CN 201910004334A CN 109703793 A CN109703793 A CN 109703793A
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Abstract
The present invention provides a kind of buffering energy-absorbing recyclable device design method and buffering energy-absorbing recyclable devices, this method comprises: step 1, according to the application environment and installation site of buffering energy-absorbing recyclable device, using the energy absorption performance of buffering energy-absorbing recyclable device and performance is reliably connected as design key point；Step 2 selects buffering energy-absorbing mechanism for the design key point of the energy absorption performance of buffering energy-absorbing recyclable device；The fixedly connected part of buffering energy-absorbing mechanism is selected for the design key point for being reliably connected performance of buffering energy-absorbing recyclable device；Step 3 carries out Numerical Simulation Analysis and ground validation test, respectively for the buffering energy-absorbing recyclable device selected in step 2 to verify the feasibility of buffering energy-absorbing recyclable device design method.It applies the technical scheme of the present invention, to solve that the technical issues of residual part is safely and reliably recycled can not be separated to the blasting bolt with height harmfulness in the prior art.
Description
Technical field
The present invention relates to vehicle technology field more particularly to a kind of buffering energy-absorbing recyclable device design methods and buffering to inhale
It can recyclable device.
Background technique
Thin-wall construction can be using the plastic deformation of material come the impact kinetic energy that dissipates, and stored by the axial deformation of structure
Energy is much higher than laterally.Thin-wall construction has the high ratio of strength to weight, low cost, high energy absorbing efficiency and deformation pattern stably and controllable etc. excellent
Point is widely used in the system using impact kinetic energy dissipation such as space flight, vehicle and ship.
Blasting bolt is simple with its structure, separation is reliably widely used on the aircraft such as rocket, satellite and guided missile.It is quick-fried
Fried bolt belongs to " connecting strong solution by force " type unlocking mechanism, and when attachment force is larger, required releasing force is also larger.Blasting bolt separation solution
After lock, remaining bolt body and screw rod high speed fly out, and can generate biggish momentum to cabin.And in the prior art, mesh
It is preceding that the residual part of blasting bolt separation with height harmfulness is safely and reliably recycled without suitable crash energy absorption equipment,
Significantly reduce the security performance of aircraft.
Summary of the invention
The present invention provides a kind of buffering energy-absorbing recyclable device design method and buffering energy-absorbing recyclable device, it is able to solve existing
The technical issues of residual part is safely and reliably recycled can not be separated to the blasting bolt with height harmfulness by having in technology.
According to an aspect of the present invention, a kind of buffering energy-absorbing recyclable device design for Flight Vehicle Stage Separation is provided
Method, buffering energy-absorbing recyclable device design method includes: step 1, according to the application environment and installation of buffering energy-absorbing recyclable device
Position using the energy absorption performance of buffering energy-absorbing recyclable device and is reliably connected performance as design key point；Step 2, for buffering
The design key point of the energy absorption performance of energy-absorbing recyclable device selects buffering energy-absorbing mechanism；For buffering energy-absorbing recyclable device
The design key point for being reliably connected performance the fixedly connected part of buffering energy-absorbing mechanism is selected；Step 3, for step
The buffering energy-absorbing recyclable device selected in two carries out Numerical Simulation Analysis and ground validation test, respectively to verify buffering energy-absorbing
The feasibility of recyclable device design method.
Further, for the design key point of the energy absorption performance of buffering energy-absorbing recyclable device, heat-resisting alloy honeycomb is selected
Bolster is as buffering energy-absorbing mechanism；For the design key point for being reliably connected performance of buffering energy-absorbing recyclable device, spiral shell is selected
Nail and fixedly connected part of the pin as buffering energy-absorbing mechanism.
Further, when carrying out the selection of heat-resisting alloy honeycomb bolster using theoretical analysis method, according to Da Langbei
That principle, is added inertia force in buffering energy-absorbing recyclable device, and structure is made to become the inertia of balance by unbalanced dynamical system
System calculates the deformation energy of heat-resisting alloy honeycomb bolster with the calculation method of dead load, is buffered according to heat-resisting alloy honeycomb
The deformation of part can be to determine the section load of heat-resisting alloy honeycomb bolster.
Further, the section load f of heat-resisting alloy honeycomb bolster should meetWherein, m1For
The quality of blasting bolt remnants component, V0Speed when separating for blasting bolt remnants component, A are heat-resisting alloy honeycomb bolster
Cross-sectional area, α is conversion coefficient, LdFor the non-resilient decrement of heat-resisting alloy honeycomb bolster, LeIt is slow for heat-resisting alloy honeycomb
The Elastic penetration of stamping.
Further, after being analyzed using fixedly connected part of the theoretical analysis method to buffering energy-absorbing mechanism, selection
First screw and the second screw are to select pin to be used for for bearing moment of flexure when heat-resisting alloy honeycomb bolster malformation
Bear the shearing moment when malformation of heat-resisting alloy honeycomb bolster, the maximum pull F of the first screw and the second screwPIt should all
MeetWherein, L2For the distance between the central axis of blasting bolt and mounting table of recycling box, L1It is first
The distance between screw and the second screw, F0For the average crushing force of heat-resisting alloy honeycomb bolster.
Further, in step 3, when carrying out Numerical Simulation Analysis to selected buffering energy-absorbing recyclable device, to slow
Suction energy recyclable device carries out modeling and grid dividing, passes through the material properties and perimeter strip that buffering energy-absorbing recyclable device is arranged
Part is to establish the contact relation of heat-resisting alloy honeycomb bolster and blasting bolt；According to heat-resisting alloy honeycomb bolster and explosion spiral shell
The contact relation of bolt, which is iterated buffering energy-absorbing recyclable device, to be solved to obtain the conquassation situation of heat-resisting alloy honeycomb bolster
With the curve of load of screw；It is verified according to the curve of load of the conquassation situation of acquired heat-resisting alloy honeycomb bolster and screw
The reasonability of selected buffering energy-absorbing recyclable device.
It further,, will be quick-fried when carrying out ground validation test to selected buffering energy-absorbing recyclable device in step 3
Fried bolt is mounted on test-bed by nut, and buffering is installed in one end of nut without constraint in one end of blasting bolt
Energy-absorbing recyclable device detonates blasting bolt to verify the cushion performance of buffering energy-absorbing recyclable device.
According to another aspect of the invention, a kind of buffering energy-absorbing recyclable device is provided, buffering energy-absorbing recyclable device includes
Recycling box 10, fixedly connected part 20 and heat-resisting alloy honeycomb bolster 30, buffering energy-absorbing recyclable device use as described above slow
Suction can recyclable device design method design, the setting of heat-resisting alloy honeycomb bolster 30 recycling box 10 and blasting bolt it
Between, recycling box 10 is connect by fixedly connected part 20 with cabin.
Further, heat-resisting alloy honeycomb bolster 30 includes honeycomb core, first panel and second panel, honeycomb core setting
Between first panel and second panel, first panel and second panel design with the shape with honeycomb core；Fixedly connected part 20 includes
First screw 21, the second screw 22 and pin 23.
Further, honeycomb core has multiple hexagon receiving holes, and multiple hexagon receiving holes are for accommodating aircraft grade
Between blasting bolt remnants component in separation process.
It applies the technical scheme of the present invention, provides a kind of buffering energy-absorbing recyclable device for Flight Vehicle Stage Separation and set
Meter method, this method is using the big momentum buffering energy-absorbing recyclable device in small space as research object, first according to background input condition point
The key Design point for analysing the device proposes the analysis for solving buffering energy-absorbing performance and being reliably connected the big crucial design point of performance two
Method, and the state of the art of buffering energy-absorbing recyclable device has been determined with this；Then, the buffering energy-absorbing recyclable device of selection is carried out
For Numerical Simulation Analysis to carry out calibration assessment to impact, assessment result thinks the buffering energy-absorbing recycling dress of this patent institute design
Set the effective recycling that can be achieved to the residual part of blasting bolt；Finally, buffering energy-absorbing recyclable device has passed through the separation of ground burst bolt
It is verified with recovery test, test result shows that the design method of the device is correctly effective.Buffering energy-absorbing provided by the present invention returns
Receiving apparatus design method compared with prior art, designed by buffering energy-absorbing recyclable device more safe and feasible, can be to tool
There is the blasting bolt of height harmfulness to separate residual part safely and reliably to be recycled, explode suitable for the aircraft of narrow space
Buffering, energy-absorbing and the recycling of the residual part of big momentum after bolt high-speed separation.
Detailed description of the invention
Included attached drawing is used to provide to be further understood from the embodiment of the present invention, and which constitute one of specification
Point, for illustrating the embodiment of the present invention, and come together to illustrate the principle of the present invention with verbal description.It should be evident that below
Attached drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
Property labour under the premise of, be also possible to obtain other drawings based on these drawings.
Fig. 1 shows the structural schematic diagram of the buffering energy-absorbing recyclable device provided according to a particular embodiment of the invention；
Fig. 2 shows between the power and displacement of the heat-resisting alloy honeycomb bolster provided according to a particular embodiment of the invention
Curve relation figure；
Fig. 3 shows the pass of the curve between the power and displacement of the nonlinear spring provided according to a particular embodiment of the invention
System's figure；
Fig. 4 shows the vertical view knot of the buffering energy-absorbing recyclable device installation form provided according to a particular embodiment of the invention
Structure schematic diagram；
Fig. 5 shows the side view knot of the buffering energy-absorbing recyclable device installation form provided according to a particular embodiment of the invention
Structure schematic diagram.
Wherein, the above drawings include the following reference numerals:
10, recycling box；20, fixedly connected part；21, the first screw；22, the second screw；23, pin；30, high temperature alloy bee
Nest bolster；100, blasting bolt；200, nut.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is right below
The description only actually of at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or use
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, shall fall within the protection scope of the present invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
As shown in Figure 1, providing a kind of buffering suction for Flight Vehicle Stage Separation according to a particular embodiment of the invention
Energy recyclable device design method, which includes: step 1, according to buffering energy-absorbing recyclable device
Application environment and installation site, using the energy absorption performance of buffering energy-absorbing recyclable device and be reliably connected performance as design key
Point；Step 2 selects buffering energy-absorbing mechanism for the design key point of the energy absorption performance of buffering energy-absorbing recyclable device；Needle
The design key point for being reliably connected performance of buffering energy-absorbing recyclable device selects the fixedly connected part of buffering energy-absorbing mechanism
It selects；Step 3 carries out Numerical Simulation Analysis and ground validation examination for the buffering energy-absorbing recyclable device selected in step 2 respectively
It tests, to verify the feasibility of buffering energy-absorbing recyclable device design method.
Using such configuration mode, a kind of buffering energy-absorbing recyclable device design side for Flight Vehicle Stage Separation is provided
Method, this method, first should according to the analysis of background input condition using the big momentum buffering energy-absorbing recyclable device in small space as research object
The key Design point of device proposes the analysis side for solving buffering energy-absorbing performance and being reliably connected the big crucial design point of performance two
Method, and the state of the art of buffering energy-absorbing recyclable device has been determined with this；Then, number is carried out to the buffering energy-absorbing recyclable device of selection
It is worth simulation analysis to carry out calibration assessment to impact, assessment result thinks the buffering energy-absorbing recyclable device of this patent institute design
Effective recycling to the residual part of blasting bolt can be achieved；Finally, buffering energy-absorbing recyclable device passed through ground burst bolt separation with
Recovery test verifying, test result show that the design method of the device is correctly effective.Buffering energy-absorbing recycling provided by the present invention
Device design method compared with prior art, designed by buffering energy-absorbing recyclable device more safe and feasible, can be to having
The blasting bolt of height harmfulness separates residual part and is safely and reliably recycled, and explode spiral shell suitable for the aircraft of narrow space
Buffering, energy-absorbing and the recycling of the residual part of big momentum after bolt high-speed separation.
In step 1, first according to design requirement and design input condition, specifies the big momentum buffering energy-absorbing in small space and return
The design key point of receiving apparatus.Specifically, in the present invention, buffering energy-absorbing recyclable device needs for momentum to be up to 18Ns, impact
The blasting bolt that energy is up to 300J separate remaining component effectively, reliable recovery.Meanwhile in blasting bolt remnants member distance cabin
Equipment is closer, and the design space of design effectively only has 30mm.Based on this, according to the application environment and peace of buffering energy-absorbing recyclable device
Holding position using the energy absorption performance of buffering energy-absorbing recyclable device and is reliably connected performance as design key point.
After the design key point of buffering energy-absorbing recyclable device has been determined, for the design key point, carry out buffering energy-absorbing
The energy-absorbing buffering of recyclable device and it is reliably connected conceptual design.For the design key of the energy absorption performance of buffering energy-absorbing recyclable device
Point selects heat-resisting alloy honeycomb bolster 30 as buffering energy-absorbing mechanism；For the reliable connectivity of buffering energy-absorbing recyclable device
The design key point of energy, selects screw and pin as the fixedly connected part of buffering energy-absorbing mechanism.
Can have using such configuration mode by selecting heat-resisting alloy honeycomb bolster as energy-absorbing buffering component
Effect reduces the impact force of the residual part of blasting bolt, recycles the residual part of high-speed separation, plays the role of buffering energy-absorbing recycling.By selecting screw
Fixedly connected part with pin as buffering energy-absorbing mechanism, it can be ensured that recycling box is safe and reliable under the residual part impact of blasting bolt
Connection.
Further, in the present invention, in the selection for carrying out heat-resisting alloy honeycomb bolster 30 using theoretical analysis method
When, according to dAlembert principle, inertia force is added in buffering energy-absorbing recyclable device, becomes structure by unbalanced dynamical system
At the inertia system of balance, the deformation energy of heat-resisting alloy honeycomb bolster is calculated with the calculation method of dead load, according to high temperature
The deformation of alloy cellular bolster 30 can be to determine the section load of heat-resisting alloy honeycomb bolster 30.
Specifically, in the present invention, the cushioning collecting process of buffering energy-absorbing recyclable device can simplify are as follows: quality m1It is quick-fried
The fried residual part of bolt, after isolation with V0Speed fly out forward, stroke L0, it is slow to be applied to the heat-resisting alloy honeycomb that sectional area is A
In stamping 30.Heat-resisting alloy honeycomb bolster 30 is in average crushing force F0Under the action of absorb the residual part of blasting bolt kinetic energy.
According to dAlembert principle, inertia force is added in buffering energy-absorbing recyclable device, makes structure by unbalanced power
System becomes the inertia system of balance, to calculate deformation energy with the calculation method of dead load.This simplified method can be used
In the estimation of buffering energy-absorbing recyclable device parameter.The heat-resisting alloy honeycomb bolster 30 of buffering energy-absorbing recyclable device is in blasting bolt
Conquassation deformation occurs under the impact force of residual part, power is as shown in Figure 2 with displacement curve.If ignoring the energy loss of impact process,
The deformation of heat-resisting alloy honeycomb bolster 30 is similar to nonlinear spring, and the power and displacement curve of nonlinear spring are as shown in Figure 3.
Therefore, the power and displacement curve that heat-resisting alloy honeycomb bolster Pressing Deformation can be reduced in Fig. 3.
As decrement x≤LdWhen,
T0≤Wj(formula one), Wj=α W0(formula two)
Wherein, T0For the kinetic energy of explosion residue screw rod and nut, WjIt is compressed for heat-resisting alloy honeycomb bolster under dynamic impulsion
Amount is LdWhen potential energy, W0It is L for the static decrement for impacting lower heat-resisting alloy honeycomb bolster 30eWhen potential energy, α be conversion
Coefficient.As a specific embodiment of the invention, for dynamic impact compared with quasistatic compression, each specification heat-resisting alloy honeycomb is slow
Platform intensity, weight/HP ratio, the quality of stamping 30 are promoted than energy-absorbing, volume ratio energy-absorbing, average to promote about 33%, so can
Take α=1.33.
By Wj=α W0It is found that
It can be obtained according to formula one, three, five
Enable F0=f × A can be obtained:
Wherein, f is heat-resisting alloy honeycomb section load.
From the foregoing, it will be observed that the section load f of heat-resisting alloy honeycomb bolster should meetWherein, m1For
The quality of blasting bolt remnants component, V0Speed when separating for blasting bolt remnants component, A are heat-resisting alloy honeycomb bolster
30 cross-sectional area, α are conversion coefficient, LdFor the non-resilient decrement of heat-resisting alloy honeycomb bolster 30, LeFor high temperature alloy bee
The Elastic penetration of nest bolster 30.
As a specific embodiment of the invention, after blasting bolt detonation unlock, momentum I is 18Ns, and explode spiral shell
The quality m of the residual part of bolt1For 545g, the impact velocity of the residual part of blasting bolt is the ratio of its momentum and quality, i.e. impact velocity are as follows:
Le≈ 3.1%L0~5.8%L0≈1.3mm
Ld≈ 78%L0~90%L0≈19mm
The cross section A of heat-resisting alloy honeycomb bolster is 50mm × 50mm, i.e. A=2500mm2
Above-mentioned each parameter, which is substituted into formula seven, can obtain f >=4.9J/cm3。
In the present invention, it in order to avoid the residual part of blasting bolt damages cabin, the buffering energy-absorbing of residual part and recycled
The impact force generated in journey cannot be excessive, and the volume ratio energy-absorbing of selected main endergonic structure is not less than 4.9J/cm3.High temperature alloy bee
Nest bolster volume ratio energy-absorbing is up to 6J/cm3, initial crushing force is about 22000N, meets and is used as buffering energy-absorbing recyclable device master
The requirement of endergonic structure, therefore can determine as main endergonic structure.Heat-resisting alloy honeycomb bolster 30 includes honeycomb core, first panel
And second panel, honeycomb core are arranged between first panel and second panel, first panel and the second panel and honeycomb core
Profile-followed design.As a specific embodiment of the invention, comb core material selects GH99, inscribed circle diameter 10mm, honeycomb
For core with a thickness of 0.12mm, front and back covering is the GH99 panel of 1mm, and the connection of covering and honeycomb core is realized by soldering.According to
Cushion space limits in cabin, and the thickness of heat-resisting alloy honeycomb takes 30mm.
Further, according to formula three it is found that the impact energy of blasting bolt screw rod is 297J, heat-resisting alloy honeycomb buffering
The ratio energy-absorbing of part is 6J/cm3.If L0=30mm, then design space is 75cm3, can energy-absorbing 375J, meet small space buffer and inhale
It can design requirement.
After the buffering energy-absorbing design for completing heat-resisting alloy honeycomb bolster, the connection for needing to be fixedly connected part can
By property design.The moment of flexure that the average crushing force acted on heat-resisting alloy honeycomb bolster generates is by the first screw in recycling box
It is born with the second screw, the maximum pull F that the first screw and the second screw are bornP, blasting bolt central axis is away from recycling box installation
Table top L2, the distance between the first screw and the second screw are L1。
To ensure that buffering gathering device is reliably connected, average crushing force F when heat-resisting alloy honeycomb bolster is compressed0It generates
Moment MLIt should be less than the maximum pull F of honeycomb supporting support mounting screwPThe moment M of generationP, therefore:
MP≥ML(formula eight)
FPL1≥F0L2(formula nine)
From the foregoing, it will be observed that after being analyzed using fixedly connected part of the theoretical analysis method to buffering energy-absorbing mechanism, selection
First screw and the second screw with for bearing moment of flexure when heat-resisting alloy honeycomb 30 malformation of bolster, select pin with
The maximum of shearing moment when bearing 30 malformation of heat-resisting alloy honeycomb bolster, the first screw 21 and the second screw 22 is drawn
Power FPIt should all meetWherein, L2For the distance between the central axis of blasting bolt and mounting table of recycling box, L1
For the distance between the first screw and the second screw, F0For the average crushing force of heat-resisting alloy honeycomb bolster.
As a specific embodiment of the invention, L1=25mm, L2=27mm, according to heat-resisting alloy honeycomb bolster
Mean crushing load F0The screw average tension obtained for 15000N are as follows:
FP≥16200N
If the peak value crush loads F of heat-resisting alloy honeycomb bolster when being compressed according to moment0For 22000N and to peak value
Load takes 1.25 safety coefficient, then the maximum pull that screw designs can be born are as follows:
FP≥29700N
In the present invention, buffering energy-absorbing recyclable device by attachment screw and holds the company for cutting off and following closely and realizing with aircraft cabin
It connects.9310 steel tensile strength 1200MPa or more, ballistic work is made in 2.3J/mm2 or more of it in 180J or more, impact flexibility
M6 screw bearing capacity up to 33.9kN.Therefore, 9310 steel meet buffering energy-absorbing recyclable device it is high to fixed connection structure intensity,
Shock proof requirement.The maximum pull that screw can be born is 33912N, then when the screw of M6 is broken, the cellular initial conquassation of GH99
Power is 31400N, meets static bearing requirements.
After completing to the theory analysis of heat-resisting alloy honeycomb bolster and fixedly connected part, need to buffering energy-absorbing
Recyclable device carries out numerical simulation verifying.Specifically, in step 3, numerical value is being carried out to selected buffering energy-absorbing recyclable device
When simulation analysis, modeling and grid dividing are carried out to buffering energy-absorbing recyclable device, pass through setting buffering energy-absorbing recyclable device
Material properties and boundary condition are to establish the contact relation of heat-resisting alloy honeycomb bolster and blasting bolt；According to high temperature alloy bee
The contact relation of nest bolster and blasting bolt is iterated solution to buffering energy-absorbing recyclable device to obtain heat-resisting alloy honeycomb
The conquassation situation of bolster and the curve of load of screw；According to the conquassation situation and spiral shell of acquired heat-resisting alloy honeycomb bolster
The curve of load of nail verifies the reasonability of selected buffering energy-absorbing recyclable device.
As a specific embodiment of the invention, it ABAQUS/Explicit software can be used to recycle buffering energy-absorbing and fill
Carry out numerical simulation is set, the model of buffering energy-absorbing recyclable device is established and carries out grid dividing, by the way that its material properties, side are arranged
Boundary's condition establishes the contact relation of honeycomb Yu blasting bolt screw rod, heat-resisting alloy honeycomb bolster can be obtained after iterative solution
It is crushed the curve of load of situation and screw.By simulation calculation it is found that the residual part of blasting bolt hits heat-resisting alloy honeycomb buffering
After part, heat-resisting alloy honeycomb bolster is crushed after entering plastic deformation.Maximum when heat-resisting alloy honeycomb bolster is crushed
Displacement is about 15.2mm, and the design space less than 30mm meets buffering energy-absorbing requirement.Blasting bolt remnants screw rod hits high temperature and closes
The moment of golden cellular cushion part, the attachment screw maximum pull for buffering recycling box and cabin is 16113N, less than breaking load
33912N, residual intensity coefficient are 1.5, meet screw bearing requirements.
After completing to the simulating, verifying of buffering energy-absorbing recyclable device, need to buffer buffering energy-absorbing recyclable device
Verification experimental verification.In step 3, when carrying out ground validation test to selected buffering energy-absorbing recyclable device, blasting bolt is led to
It crosses nut to be mounted on test-bed, one end of blasting bolt is without constraint, in one end of nut installation buffering energy-absorbing recycling
Device detonates blasting bolt to verify the cushion performance of buffering energy-absorbing recyclable device.
As a specific embodiment of the invention, as shown in Figure 4 and Figure 5, the nut 200 of blasting bolt 100 is installed
On test-bed, one end of blasting bolt 100 is installed buffering energy-absorbing recyclable device in 200 one end of nut, is risen without constraint
Quick-fried blasting bolt 100 verifies the cushion performance of buffering energy-absorbing recyclable device.Buffering energy-absorbing recyclable device by two M6 screws into
Row is fixed on installation base.In order to increase the shear resistance of buffering energy-absorbing recyclable device, positioning pin is set in bottom.In order to subtract
The deformation of buffering energy-absorbing recyclable device under small impact condition increases support construction in the rear portion lower end of buffering energy-absorbing recyclable device,
To undertake the additional bending moment generated due to impact.High temperature alloy can be used in the comb core material of heat-resisting alloy honeycomb bolster 30.
Experiment proves that five attachment screws of recycling box remain intact, and plasticity does not occur after blasting bolt 100 detonates
Deformation, three dowel holes of recycling box also do not deform, are successfully realized the buffering and collection of the residual part of blasting bolt.Test
The speed measured when the residual part of blasting bolt strikes heat-resisting alloy honeycomb bolster 30 is 33m/s, and taking safety coefficient is 2, then quick-fried
The fried residual part load of bolt is 17249N.By formula ten it is found that pulling force suffered by screw is 18628N, and the maximum drawing that screw can be born
Power is 33912N, illustrates that the intensity of screw, rigidity meet design requirement.The screw maximum pull obtained through numerical simulation is
16113N, error in numerical calculation 13.5%, calculating error is smaller, and the analysis method for illustrating that the design provides can be supported effectively
The design of buffering energy-absorbing recyclable device.
It was found from test process and result: after blasting bolt detonation, the remaining kinetic energy of the residual part of blasting bolt is by high temperature alloy
Cellular cushion part absorbs, and the residual part of blasting bolt, which is recovered in recycling box, does not occur rebound phenomena, illustrates to buffer recyclable device
Energy-absorbing buffering better performances；The attachment screw of recycling box is intact, illustrates the reliable connectivity of buffering energy-absorbing recyclable device
Can be good, it is all satisfied design requirement.
According to another aspect of the present invention, a kind of buffering energy-absorbing recyclable device is provided, the buffering energy-absorbing recyclable device packet
Recycling box 10, fixedly connected part 20 and heat-resisting alloy honeycomb bolster 30 are included, buffering energy-absorbing recyclable device uses as described above
Buffering energy-absorbing recyclable device design method designs, the setting of heat-resisting alloy honeycomb bolster 30 recycling box 10 and blasting bolt it
Between, recycling box 10 is connect by fixedly connected part 20 with cabin.Use buffering energy-absorbing recyclable device design method institute of the invention
The buffering energy-absorbing recyclable device more safe and feasible of design can separate residual part to the blasting bolt with height harmfulness and carry out
It safely and reliably recycles, the buffering of the big residual part of momentum, suction after blasting bolt high-speed separation the aircraft of narrow space
It can and recycle.
Further, in the present invention, as shown in Figure 1, heat-resisting alloy honeycomb bolster 30 includes honeycomb core, first panel
And second panel, honeycomb core are arranged between first panel and second panel, first panel and second panel and honeycomb core are profile-followed
Design；Fixedly connected part 20 includes the first screw 21, the second screw 22 and pin 23.As a specific implementation of the invention
Example, the body structure of heat-resisting alloy honeycomb bolster 30 are the heat-resisting alloy honeycomb thin-wall construction with energy-absorbing buffering effect, honeycomb
Core has multiple hexagon receiving holes, and multiple hexagon receiving holes are used to accommodate the blasting bolt during Flight Vehicle Stage Separation
Remaining component.
In conclusion the present invention provides a kind of small big momentum buffering energy-absorbing recyclable device design method in space, the design
Method is needed according to input condition, by the methods of theory analysis, numerical simulation and verification experimental verification, to solve buffering energy-absorbing recycling
The buffering energy-absorbing performance of device and the big key technical problems of performance two are reliably connected, verify the feasibility of design method.The present invention
Design method compared with prior art, in face of design space deficiency and recycling the big feature of the residual high momentum two of part, link closely honeycomb
Buffering energy-absorbing performance and collection device be reliably connected this two big crucial design point of performance, integrated use is theoretical, numerical simulation
Work is carried out with ground validation test, there is important directive significance to the design of buffering energy-absorbing recyclable device.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of buffering energy-absorbing recyclable device design method for Flight Vehicle Stage Separation, which is characterized in that the buffering is inhaled
Can recyclable device design method include:
Step 1, according to the application environment and installation site of buffering energy-absorbing recyclable device, by the energy-absorbing of buffering energy-absorbing recyclable device
Performance and performance is reliably connected as design key point；
Step 2 selects buffering energy-absorbing mechanism for the design key point of the energy absorption performance of buffering energy-absorbing recyclable device；
The fixedly connected part of buffering energy-absorbing mechanism is carried out for the design key point for being reliably connected performance of buffering energy-absorbing recyclable device
Selection；
Step 3 carries out Numerical Simulation Analysis and ground for the buffering energy-absorbing recyclable device selected in the step 2 respectively
Verification test, to verify the feasibility of buffering energy-absorbing recyclable device design method.
2. the buffering energy-absorbing recyclable device design method according to claim 1 for Flight Vehicle Stage Separation, feature
It is, for the design key point of the energy absorption performance of buffering energy-absorbing recyclable device, selects heat-resisting alloy honeycomb bolster as slow
Rush energy absorber；For the design key point for being reliably connected performance of buffering energy-absorbing recyclable device, select screw and pin as
The fixedly connected part of buffering energy-absorbing mechanism.
3. the buffering energy-absorbing recyclable device design method according to claim 2 for Flight Vehicle Stage Separation, feature
It is, when carrying out the selection of heat-resisting alloy honeycomb bolster using theoretical analysis method, according to dAlembert principle, is buffering
Inertia force is added in energy-absorbing recyclable device, so that structure is become the inertia system of balance by unbalanced dynamical system, with static load
The calculation method of lotus calculates the deformation energy of heat-resisting alloy honeycomb bolster, according to the deformation energy of the heat-resisting alloy honeycomb bolster
With the section load of the determination heat-resisting alloy honeycomb bolster.
4. the buffering energy-absorbing recyclable device design method according to claim 3 for Flight Vehicle Stage Separation, feature
It is, the section load f of the heat-resisting alloy honeycomb bolster should meetWherein, m1For blasting bolt
The quality of remaining component, V0Speed when separating for blasting bolt remnants component, A are the cross section of heat-resisting alloy honeycomb bolster
Product, α is conversion coefficient, LdFor the non-resilient decrement of heat-resisting alloy honeycomb bolster, LeFor the bullet of heat-resisting alloy honeycomb bolster
Property decrement.
5. the buffering energy-absorbing recyclable device design method according to claim 2 for Flight Vehicle Stage Separation, feature
It is, after analyzing using fixedly connected part of the theoretical analysis method to the buffering energy-absorbing mechanism, selects the first screw
With the second screw to select the pin to be used for for bearing the moment of flexure when heat-resisting alloy honeycomb bolster malformation
The shearing moment when heat-resisting alloy honeycomb bolster malformation is born, first screw and second screw are most
Big pulling force FPIt should all meetWherein, L2Between the central axis of blasting bolt and the mounting table of recycling box away from
From L1For the distance between the first screw and the second screw, F0For the average crushing force of heat-resisting alloy honeycomb bolster.
6. the buffering energy-absorbing recyclable device design method according to claim 2 for Flight Vehicle Stage Separation, feature
It is, in the step 3, when carrying out Numerical Simulation Analysis to selected buffering energy-absorbing recyclable device, the buffering is inhaled
Energy recyclable device carries out modeling and grid dividing, passes through the material properties and perimeter strip that the buffering energy-absorbing recyclable device is arranged
Part is to establish the contact relation of heat-resisting alloy honeycomb bolster and blasting bolt；According to the heat-resisting alloy honeycomb bolster with it is quick-fried
The contact relation of fried bolt is iterated solution to the buffering energy-absorbing recyclable device to obtain heat-resisting alloy honeycomb bolster
It is crushed the curve of load of situation and screw；According to the load of the conquassation situation of acquired heat-resisting alloy honeycomb bolster and screw
Curve verifies the reasonability of selected buffering energy-absorbing recyclable device.
7. the buffering energy-absorbing recyclable device design method according to claim 6 for Flight Vehicle Stage Separation, feature
It is, in the step 3, when carrying out ground validation test to selected buffering energy-absorbing recyclable device, blasting bolt is led to
It crosses nut to be mounted on test-bed, buffering is installed in one end of the nut without constraint in one end of the blasting bolt
Energy-absorbing recyclable device detonates blasting bolt to verify the cushion performance of the buffering energy-absorbing recyclable device.
8. a kind of buffering energy-absorbing recyclable device, which is characterized in that the buffering energy-absorbing recyclable device includes recycling box (10), fixes
Connector (20) and heat-resisting alloy honeycomb bolster (30), the buffering energy-absorbing recyclable device use any in claim 1 to 7
Buffering energy-absorbing recyclable device design method described in designs, and the heat-resisting alloy honeycomb bolster (30) is arranged at described time
It receives between box (10) and blasting bolt, the recycling box (10) is connect by fixedly connected part (20) with cabin.
9. buffering energy-absorbing recyclable device according to claim 8, which is characterized in that the heat-resisting alloy honeycomb bolster
It (30) include honeycomb core, first panel and second panel, the honeycomb core is arranged in the first panel and the second panel
Between, the first panel and the second panel design with the shape with the honeycomb core；The fixedly connected part (20) includes the
One screw (21), the second screw (22) and pin (23).
10. buffering energy-absorbing recyclable device according to claim 9, which is characterized in that the honeycomb core has multiple six sides
Shape receiving hole, multiple hexagon receiving holes are used to accommodate the blasting bolt remnants component during Flight Vehicle Stage Separation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910004334.9A CN109703793B (en) | 2019-01-03 | 2019-01-03 | Design method of buffering energy-absorbing recovery device and buffering energy-absorbing recovery device |
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|---|---|---|---|
| CN201910004334.9A CN109703793B (en) | 2019-01-03 | 2019-01-03 | Design method of buffering energy-absorbing recovery device and buffering energy-absorbing recovery device |
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| CN109703793A true CN109703793A (en) | 2019-05-03 |
| CN109703793B CN109703793B (en) | 2021-06-08 |
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| CN201910004334.9A Active CN109703793B (en) | 2019-01-03 | 2019-01-03 | Design method of buffering energy-absorbing recovery device and buffering energy-absorbing recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055686A (en) * | 2020-04-15 | 2020-12-08 | 中国科学院微小卫星创新研究院 | Point type separation satellite and rocket butt joint structure |
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| SU1668191A1 (en) * | 1989-06-29 | 1991-08-07 | Всесоюзный Научно-Исследовательский Институт Вагоностроения | Apparatus for dismantling of absorber of automatic coupling from car |
| CN107191459A (en) * | 2017-06-09 | 2017-09-22 | 北京空间飞行器总体设计部 | A kind of strong contained explosion bolt device |
| CN108033038A (en) * | 2017-12-14 | 2018-05-15 | 北京航空航天大学 | Blasting bolt buffer unit |
| KR101864047B1 (en) * | 2016-12-07 | 2018-06-04 | 국방과학연구소 | Low-shock separation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1668191A1 (en) * | 1989-06-29 | 1991-08-07 | Всесоюзный Научно-Исследовательский Институт Вагоностроения | Apparatus for dismantling of absorber of automatic coupling from car |
| KR101864047B1 (en) * | 2016-12-07 | 2018-06-04 | 국방과학연구소 | Low-shock separation device |
| CN107191459A (en) * | 2017-06-09 | 2017-09-22 | 北京空间飞行器总体设计部 | A kind of strong contained explosion bolt device |
| CN108033038A (en) * | 2017-12-14 | 2018-05-15 | 北京航空航天大学 | Blasting bolt buffer unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055686A (en) * | 2020-04-15 | 2020-12-08 | 中国科学院微小卫星创新研究院 | Point type separation satellite and rocket butt joint structure |
| CN112055686B (en) * | 2020-04-15 | 2023-11-24 | 中国科学院微小卫星创新研究院 | Point type separation satellite rocket docking structure |
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| Publication number | Publication date |
|---|---|
| CN109703793B (en) | 2021-06-08 |
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