CN108423200A - Firer based on continuous media-Discontinuous transmission detaches with drop impact separator - Google Patents
Firer based on continuous media-Discontinuous transmission detaches with drop impact separator Download PDFInfo
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- CN108423200A CN108423200A CN201810449339.8A CN201810449339A CN108423200A CN 108423200 A CN108423200 A CN 108423200A CN 201810449339 A CN201810449339 A CN 201810449339A CN 108423200 A CN108423200 A CN 108423200A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
Abstract
The invention discloses a kind of firers based on continuous media-Discontinuous transmission to detach with drop impact separator, high-energy stress wave after gunpowder explosion is transmitted to from solid continuous media in the multipath Discontinuous transmission of particIe system, to destroy the ordered state of particIe system and form the reconstruct of particIe system contact force, so that the kinetic energy that impact generates is converted to the elasticity energy and thermal energy of particIe system, the quick transmission of high energy stress wave in continuous media is blocked.By establishing continuous Discontinuous transmission contact model; and consider the near field dynamic method that long-range force characteristic and " boundary effect " are acted on based on key; and the drop impact effect of application model analysis firer's separator; the drop percussion mechanism can be on the basis of additional mass be smaller; more apparent drop impact effect is can be obtained, so that it is guaranteed that firer's separated structure coupling stiffness and fundamental frequency meet design requirement.
Description
Technical field
The present invention it is primary propose principle of energy dissipation of the stress wave in particle system, and based on the principle for fire
Work point is from buffer technology field, and in particular to a kind of firer's separation drop percussion mechanism.
Background technology
Dynamic mechanical behavior of the granular materials under explosion, impact loading is always the much-talked-about topic of academia's concern
One of, the interaction between particle system and chamber wall be influence particle's behavior pith, but at present rare research,
Point contact occurs between grain system and chamber wall or small face contacts, and particle system is geometric height non-linear body, chamber wall
Between being contacted with particle system, from continuous media into Discontinuous transmission communication process, stress wave wave shakes the change in face, particle for impact
The destruction of system has great influence with reconstruct to drop impact effect.
There are many type of firer's separator, can be designed to any form of device as needed.Currently, satellite,
The firer's separator used on guided missile and carrier rocket is filled by using function that can be divided into tripper, acting device and cutting
It sets.It is one of the mechanical environment the most harsh for needing to be subjected to that firer, which detaches impact, and priming system instant of detonation will produce largely
The high-frequency percussion load of grade, such shock loading can cause the acceleration responsive of the wideband high-magnitude of moment on satellite.It is special
It is not that firer's separation process medium-high frequency shock loading generates harm to spaceborne sophisticated electronics and micro-electromechanical device.
In the prior art, in Aerospace Engineering field, usually shock sensive component is arranged in far from firer
Transmission path is impacted come the impact strength that decays in shock surface remote position by extension.But since inner space is limited, separation
Structure drop impact capacity is limited, and this method is difficult to reduce the shock response of big magnitude；In addition to this, in engineering practice, dividing
Increase cushion pad, cushion hole from structure linkage interface, or increases the method for buffer stopper in complex configuration and carried come the impact that decays
Lotus, but this technology often substantially reduces the coupling stiffness and system overall stability of firer's separated structure, increases assembly
Difficulty.That is, only impacting transmission path by extension or increasing the methods such as cushion hole, it can not be substantially reduced big magnitude
Shock response.
In view of this, it would be highly desirable to detach drop impact technology for existing firer and optimize, effectively reduce big magnitude
Shock response.
Invention content
In order to solve the above technical problems, the present invention provides a kind of firer's separation use based on continuous media-Discontinuous transmission
Drop impact separator, by establishing continuous-Discontinuous transmission contact model, and considers long-range force characteristic and " boundary effect " base
In the near field dynamic method of key effect, and the drop impact effect of application model analysis firer's separator, drop impact fill
Setting can be on the basis of additional mass be smaller, you can obtains and more significantly drops impact effect, so that it is guaranteed that firer detaches knot
Structure coupling stiffness and fundamental frequency meet design requirement.
Firer provided by the invention based on continuous media-Discontinuous transmission detaches impacts separator with drop, and gunpowder is quick-fried
High-energy stress wave after fried is transmitted to from solid continuous media in the multipath Discontinuous transmission of particIe system, to destroy particle
The ordered state of system and the reconstruct for forming particIe system contact force so that the kinetic energy for impacting generation is converted to the bullet of particIe system
Performance and thermal energy block the quick transmission of high energy stress wave in continuous media.
Preferably, including：
As the installing component of continuous media, for being arranged between device to be separated and Fire load, the installing component
Middle part offer several holes, the central axis in each hole impacts path direction in firer；With several particle components, often
A particle component, which inserts, to be fixed in the hole, and it is closed in shell filled with the particle as Discontinuous transmission.
Preferably, the cross section of the installing component have middle part vertical section, upper and lower ends be respectively used to it is to be separated
Device is fixedly connected with Fire load, and several holes are arranged in the middle part vertical section.
Preferably, the installing component is in integrally circular ring shape or polygon.
Preferably, the radius r of particle described in each particle component should meet following formula：
In formula：
diPath direction is impacted to the parting surface of the installing component along firer for the center of circle of the particle component plug-in opening
Distance；
D is to impact path perpendicular to firer to be formed by the center in face to the distance of the particle component；
R is the pore radius, and is met：R≤di/2；
z1And z2The respectively length of the cantilevered out vertical section in particle component both ends, and meet：0≤z1≤ D and 0≤
z2≤D；
H is the mating surface width of particle apparatus and the installing component；
ω is class's intrinsic frequency of described device；
μsFor the friction coefficient between particle and the shell inner surface；
K1For particle stiffness coefficient；
ρ is the density of particle.
Preferably, it is the ellipse of 0.001~30mm that the particle, which is sphere, the length shaft length of 0.001~30mm of diameter,
Sphere, the length of side are the polyhedron of 0.001~30mm rules or the irregular polyhedrons that the length of side is 0.001~30mm；The particle
The shell inner surface of component and the surface configuration of the particle are：The mantle friction factor is 0.01~0.99, surface recovery coefficient
It is 0.01~1, the density of the particle is 0.1~30g/cm3；The material of the particle is metal, nonmetallic or macromolecule is multiple
Condensation material.
Preferably, the shell wall thickness of the particle component is 0.01~30mm；The inner surface of the shell be cylinder or
Polyhedron；The shell of the particle component and the material of the installing component are magnesium alloy, aluminium alloy, titanium alloy, ferroalloy, copper
Multicomponent alloy in alloy, nickel alloy, metal, manganese alloy, cobalt alloy or tungsten alloy or above-mentioned alloy is made.
Preferably, the housing cavity is divided at least two isolated chambers, and filling is identical in each isolated chambers
And/or the particle of different characteristic, wherein the material and shape and size characterized by the particle, the particle are filled out
It is 10%~100% to fill rate.
Preferably, several holes are set as at least two rows of along firer's impact path direction, and the hole of adjacent two rows
It is staggered.
Preferably, the particle component and the fixed form between the installing component be is threadedly coupled, is keyed, type face company
It connects, swelling connection, pin connection, riveting, welding, bonding or interference connection.
For the prior art, the present invention proposes above-mentioned firer's separation drop impact scheme in another way.With existing skill
Art is compared, and this programme is provided with continuous media and Discontinuous transmission on impact path, and multipath is established by Discontinuous transmission,
The multipath for being transmitted to particIe system from solid continuous media using the high-energy stress wave after this programme gunpowder explosion is discontinuous
In medium, to destroy the ordered state of particIe system and form the reconstruct of particIe system contact force so that impact the kinetic energy of generation
The elasticity energy and thermal energy for being converted to particIe system, block the quick transmission of high energy stress wave in continuous media.Reach as a result, effective
The purpose of impact drops.Simultaneously as isotropism, there is the effect of apparent drop impact to X, Y, Z-direction, and can be resistant to it is high and
Extremely low temperature, so that the additional mass between embedded device to be separated and Fire load is smaller.So set, not increasing line
The big magnitude energy that the priming system that effectively dissipates in the case of displacement and angular displacement explosion is brought, and then ensure the essence of protected structure
Cipher telegram subcomponent is without damage.
Description of the drawings
Fig. 1 is the structural schematic diagram that percussion mechanism drops in firer's separation described in specific implementation mode；
Fig. 2 is the front view that percussion mechanism drops in firer's separation shown in Fig. 1；
Fig. 3 is the A-A sectional views of Fig. 2；
Fig. 4 is the structural schematic diagram of circular ring shape installing component；
Fig. 5 be using component described in this programme compared with the experiment shock loading of non-set parts figure；
Fig. 6 is the calculating basis rectangle face dimensional drawing of the radius r of particle in this programme.
In figure：
Installing component 1, vertical section 11, hole 111, traversing section 12, particle component 2, shell 21, shell ontology 211, end cap 212,
Particle 22.
Specific implementation mode
It is below in conjunction with the accompanying drawings and specific real in order to make those skilled in the art more fully understand technical scheme of the present invention
Applying example, the present invention is described in further detail.
It is detached with drop impact separation dress using the firer based on continuous media-Discontinuous transmission that present embodiment provides
It sets, the high-energy stress wave after gunpowder explosion is transmitted to from solid continuous media in the multipath Discontinuous transmission of particIe system,
To destroy the ordered state of particIe system and form the reconstruct of particIe system contact force so that the kinetic energy for impacting generation is converted to grain
The elasticity energy and thermal energy of subsystem, block the quick transmission of high energy stress wave in continuous media.Reach effectively drop impact as a result,
Purpose.
Without loss of generality, this programme institute is described in detail using general firer's piece-rate system as description main body in present embodiment
State firer's separation drop percussion mechanism.It should be appreciated that general firer's piece-rate system and its concrete function structure, the application asked
Firer's separation scheme of protection is asked not constitute substantive limitation.
Fig. 1 is referred to, the structural schematic diagram of percussion mechanism should be dropped for firer's separation described in present embodiment.
As shown, the firer detaches, to use drop percussion mechanism include the installing component 1 as continuous media, and setting exists
Several particle components 2 on installing component 1.Specifically, as the installing component 1 of basic component for being arranged in dress to be separated
It sets between Fire load, offers several holes 111 at the middle part of installing component 1, the central axis in each hole 111 is rushed in firer
Hit path direction；Wherein, each particle component 2 is inserted and is fixed in corresponding hole 111, and it is closed and is filled in shell 21
Particle 22 as Discontinuous transmission, that is to say, that this programme is provided with particle component 2 on impact path, in cavity
Multipath is established by inelastic collision between particle 22, to which the high-energy stress wave after gunpowder explosion is passed from solid continuous media
It is delivered in the multipath Discontinuous transmission of particIe system, to destroy the ordered state of particIe system and form particIe system contact force
Reconstruct；Simultaneously as isotropism, respectively to the effect for having apparent drop impact so that embedded device to be separated and firer's dress
Additional mass between setting is smaller.So set, the priming system explosion that effectively dissipates in the case where not increasing displacement of the lines and angular displacement
The big magnitude energy brought, and then ensure that the precision electronic element of protected structure is without damage.
In conjunction with shown in Fig. 2 and Fig. 3, wherein Fig. 2 is the front view that percussion mechanism drops in firer's separation described in Fig. 1, Fig. 3
For the A-A sectional views of Fig. 2.
As shown, there is middle part vertical section, upper and lower side to be respectively used to and dress to be separated for the cross section of the installing component 1
It sets and is fixedly connected with Fire load, several holes 111 are offered in the vertical section 11 of middle part.It should be noted that as shown in the figure
The installing component of " I " fonts cross section is only to be illustrated schematically, and is utilized respectively two traversing sections 12 and realizes corresponding fixed company
It connects, clearly to show the relative position relation of this programme core component.
Using the stationary plane of installing component 1 and device to be separated as test surfaces, test result shows do not have in installing component 1
When increasing particle component 2, it is 6000g that firer, which detaches surface vibration and is transmitted to the acceleration of gravity of test point, increases particle component 2
Afterwards, the acceleration of gravity in same test oscillation point be reduced to 3000g hereinafter, and be transformed into the evaluation of particle device, using energy
Dissipation factor is more than 50% as the ability dissipation factor of assessment foundation namely particle device.Compare engineering experiment data through analysis,
And the comparison figure of device side shock loading to be separated shown in Fig. 5 is formed, abscissa is intrinsic frequency in figure, and ordinate adds for gravity
Speed, Fig. 5 show that the acceleration of gravity for adding particle component 2 is significantly lower than original situation that particle component 2 is not arranged.
In addition, through analysis compare Parameters variation when ability dissipation factor changing rule, it was determined that Fe coatings
Main two parameters of material and grain size for considering particle.Wherein, the principle of selection particle material is to ensure wearability, heat-resisting quantity
And chemical stability, the material of particle can be metal or nonmetallic, it is preferred to use the high molecular material haveing excellent performance.Particle
Grain size selection is contemplated that following factor：The factors such as the location of particle, the amplitude of vibration and frequency, each particle component 2
In the optimal value of radius r of identified particle should meet following formula：
In formula：
diPath direction is impacted to the parting surface of the installing component along firer for the center of circle of the particle component plug-in opening
Distance；
D is to impact path perpendicular to firer to be formed by the center in face to the distance of the particle component；That is, the face
Center is the distance between to the particle component geometric center；
R is the pore radius, and is met：R≤di/2；
z1And z2The respectively length of the cantilevered out vertical section in particle component both ends, and meet：0≤z1≤ D and 0≤
z2≤D；
H is the mating surface width of particle apparatus and the installing component；
ω is class's intrinsic frequency of described device；
μsFor the friction coefficient between particle and the shell inner surface；
K1For particle stiffness coefficient；
ρ is the density of particle.
Specifically, for sphere particle, on the basis of above-mentioned formula the optional section of its diameter be 0.001~
30mm。
Certainly, it is built in the shape of the particle 22 in shell 21, spheroid, length shaft length can also be selected to exist
The sections 0.001~30mm；Or the polyhedron or irregular polyhedrons of rule, size dimension is in 0.001~30mm
Section.
It, can for the surface of shell 21 inner surface and particle 22 of particle component 2 in order to obtain best Dissipated energy effect
To be each configured to：The mantle friction factor is 0.01~0.99, and surface recovery coefficient is 0.01~1.It is handled by case hardness, i.e.,
It can get above-mentioned surface parameter, wherein the density of particle is 0.1~30g/mm, and then obtains preferably drop impact effect.Its
In, 21 inner surface of shell of particle component 2 can be cylinder shown in figure, can also need to be set as according to concrete engineering
Cuboid or other polyhedrons, inner wall can be smooth surface or non-smooth surface.Specifically, 21 wall thickness of shell of particle component 2
For 0.01~30mm, specific size should according to real impact source, impact path, structural impact response spectra different frequency range characteristic
And particle density, particle diameter, particle volume filling rate, particle surface friction factor, particle surface recovery coefficient synthesis point
Analysis combines the effect of lower structure by comparing different parameters, so that it is determined that the parameter combination of particle component 2.
In addition, particle component 2 shell 21 and installing component 1 material be magnesium alloy, aluminium alloy, titanium alloy, ferroalloy,
Multicomponent alloy in copper alloy, nickel alloy, metal, manganese alloy, cobalt alloy or tungsten alloy or above-mentioned alloy is made, i.e., more
The above-mentioned alloy of kind is mixed.
In addition, 21 structure of shell of particle component 2 can be one of the forming, fabrication hole is specifically opened up on the body, via
The fabrication hole particle filled composite 22 carries out closure can (not shown).Certainly, shell 21 can also use split structure, such as
Shown in Fig. 3, which there is an inserting to be fixed on the shell ontology 211 in the vertical section 11 of installing component 1, the shell ontology 21
Open end uses the end cap 212 of threaded adapter, and the end cap 212 is screwed after particle filled composite 22.Further, particle component 2 and peace
Fill component 1 between fixed form can be threaded connection, key connection, the connection of type face, swelling connection, pin connection, riveting, welding,
Bonding or interference connection, reliably relationship is fixedly connected with to establish.
In order to adapt to the otherness difference of separation operating mode, can be advanced optimized for particle component 2.Specifically, grain
21 inner cavity of shell of subassembly 2 is divided at least two isolated chambers, and identical and/or different characteristic is filled in each isolated chambers
The particle 22, wherein the material and shape and size characterized by the particle, the filling rate of particle 22 is 10%~
100%, it can specifically be selected according to actual needs, each particle characteristics may be the same or different.For example, grain shown in Fig. 3
Subassembly 2, axially spaced is two isolated chambers, and particle size is less than the size of particle in right chamber body in its left chamber body；
Obviously, the axially spaced 2 cavity shape size of particle component that is suitable for is with the larger situation of Axial changes.Certainly, particle component 2
Can also radial separations be multiple isolated chambers, the contact area that can be effectively increased between 2 inner wall of particle and shell, specifically by class
Taxonomic revision is carried out like the region of interior shape size, to match its best particle respectively, particle can be played to the maximum extent
22 effect.
Here, the arrangement mode about particle component 2, on the basis of ensureing the rigidity of structure and intensity of installing component 1,
Several holes 111 impact path direction along firer and are set as two rows of, and the hole of adjacent two rows is staggered, in conjunction with shown in Fig. 2,
It is impacted on path in firer connection interface firer, keeps impact as much as possible by particle component 2, it is ensured that on impact transmission path
Particle component 2 is all had to pass through.Certainly, double particle component 2 also can the mode in gap (not shown) is set.
It should be noted that above-described embodiment that present embodiment provides, as long as the fire that core idea is consistent with this programme
Application of the work point from drop impact is in the range of the application is claimed.For example, for accommodating Discontinuous transmission-particle
Shell is not limited to as shown in the figure cylindric；Furthermore the shape as the installing component of continuous media 1 is not limited to institute in Fig. 4
The annular shown, specific size and frame shape can be according to practical structures situations by various sizes of sub- frame splicing camber, rectangle
Or the installing component of polygon, those skilled in the art may be implemented based on this programme core idea, so it will not be repeated.
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. the firer based on continuous media-Discontinuous transmission detaches with drop impact separator, it is characterised in that：
High-energy stress wave after gunpowder explosion is transmitted to from solid continuous media in the multipath Discontinuous transmission of particIe system,
To destroy the ordered state of particIe system and form the reconstruct of particIe system contact force so that the kinetic energy for impacting generation is converted to grain
The elasticity energy and thermal energy of subsystem, block the quick transmission of high energy stress wave in continuous media.
2. firer as described in claim 1 detaches with drop impact separator, which is characterized in that including：
As the installing component of continuous media, for being arranged between device to be separated and Fire load, in the installing component
Portion offers several holes, and the central axis in each hole impacts path direction in firer；With several particle components, Mei Gesuo
It states particle component and inserts and be fixed in the hole, and it is closed in shell filled with the particle as Discontinuous transmission.
3. firer as claimed in claim 2 detaches with drop impact separator, which is characterized in that the installing component it is transversal
There is middle part vertical section, upper and lower ends to be respectively used to be fixedly connected with device to be separated and Fire load in face, several holes
It is arranged in the middle part vertical section.
4. firer as claimed in claim 3 detaches with drop impact separator, which is characterized in that the installing component is in integrally
Circular ring shape or polygon.
5. firer as described in claim 3 or 4 detaches with drop impact separator, which is characterized in that each particle unit
The radius r of particle described in part should meet following formula：
In formula：
diFor the particle component plug-in opening the center of circle along firer impact path direction to the installing component parting surface away from
From；
D is to impact path perpendicular to firer to be formed by the center in face to the distance of the particle component；
R is the pore radius, and is met：R≤di/2；
z1And z2The respectively length of the cantilevered out vertical section in particle component both ends, and meet：0≤z1≤ D and 0≤z2≤D；
H is the mating surface width of particle apparatus and the installing component；
ω is class's intrinsic frequency of described device；
μsFor the friction coefficient between particle and the shell inner surface；
K1For particle stiffness coefficient；
ρ is the density of particle.
6. firer as claimed in claim 3 detaches with drop impact separator, which is characterized in that the particle is diameter
Sphere, the length shaft length of 0.001~30mm be the spheroid of 0.001~30mm, the length of side be 0.001~30mm rule it is more
Face body or the irregular polyhedrons that the length of side is 0.001~30mm；The table of the shell inner surface and the particle of the particle component
Face is configured to：The mantle friction factor is 0.01~0.99, and surface recovery coefficient is 0.01~1, the density of the particle is 0.1~
30g/cm3；The material of the particle is metal, nonmetallic or polymer composite.
7. firer as claimed in claim 6 detaches with drop impact separator, which is characterized in that the shell of the particle component
Wall thickness is 0.01~30mm；The inner surface of the shell is cylinder or polyhedron；The shell of the particle component and the peace
The material for filling component is magnesium alloy, aluminium alloy, titanium alloy, ferroalloy, copper alloy, nickel alloy, metal, manganese alloy, cobalt alloy
Or the multicomponent alloy in tungsten alloy or above-mentioned alloy is made.
8. firer as claimed in claim 2 detaches with drop impact separator, which is characterized in that the housing cavity is divided into
At least two isolated chambers, each isolated chambers are interior to fill identical and/or different characteristic the particle, wherein described
The filling rate of material and shape characterized by the particle and size, the particle is 10%~100%.
9. firer as claimed in claim 3 detaches with drop impact separator, which is characterized in that several holes are rushed along firer
It hits path direction and is set as at least two rows of, and the hole of adjacent two rows is staggered.
10. firer as claimed in claim 2 detaches with drop impact separator, which is characterized in that the particle component and institute
The fixed form between installing component is stated to be threaded connection, key connection, the connection of type face, swelling connection, pin connection, riveting, welding, glue
It connects or interference connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449339.8A CN108423200A (en) | 2018-05-11 | 2018-05-11 | Firer based on continuous media-Discontinuous transmission detaches with drop impact separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449339.8A CN108423200A (en) | 2018-05-11 | 2018-05-11 | Firer based on continuous media-Discontinuous transmission detaches with drop impact separator |
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| Publication Number | Publication Date |
|---|---|
| CN108423200A true CN108423200A (en) | 2018-08-21 |
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|---|---|---|---|
| CN201810449339.8A Pending CN108423200A (en) | 2018-05-11 | 2018-05-11 | Firer based on continuous media-Discontinuous transmission detaches with drop impact separator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110285176A (en) * | 2019-07-19 | 2019-09-27 | 厦门大学 | Firer based on anti-wavelength characteristic separates drop percussion mechanism and its preparation process |
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| CN110566619A (en) * | 2019-09-20 | 2019-12-13 | 厦门振为科技有限公司 | Particle damping phononic crystal structure and equivalent theoretical model construction method thereof |
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