CN208248520U - Firer separates with drop impact separator - Google Patents
Firer separates with drop impact separator Download PDFInfo
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- CN208248520U CN208248520U CN201820705225.0U CN201820705225U CN208248520U CN 208248520 U CN208248520 U CN 208248520U CN 201820705225 U CN201820705225 U CN 201820705225U CN 208248520 U CN208248520 U CN 208248520U
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Abstract
The utility model discloses a kind of firers to separate with drop impact separator, it include: the installing component as continuous media, for being arranged between device to be separated and Fire load, several holes are offered in the middle part of the installing component, the central axis in each hole impacts path direction in firer；With several particle components, each particle component, which inserts, to be fixed in the hole, and it is closed in shell filled with the particle as Discontinuous transmission.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 lesser; it can be obtained more apparent drop impact effect, 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 technique
Dynamic mechanical behavior of the granular materials under explosion, impact loading is always the hot 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 or small face contact occur between grain system and chamber wall, and particle system is geometric height non-linear body, chamber wall
It between being contacted with particle system, impacts from continuous media into Discontinuous transmission communication process, the change in stress wave wave vibration face, particle
The destruction and reconstruct of system have great influence to drop impact effect.
There are many type of firer's separator, can according to need and are designed to any form of device.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 separates impact, and priming system instant of detonation can generate 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
Shock surface remote position, by extending impact transmission path come the impact strength that decays.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, 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 will be greatly reduced the coupling stiffness and system overall stability of firer's separated structure, increase assembly
Difficulty.That is, only can not be substantially reduced big magnitude by extending impact transmission path or increasing the methods such as cushion hole
Shock response.
In view of this, it would be highly desirable to separate drop impact technology for existing firer and optimize, big magnitude is effectively reduced
Shock response.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of firer's separation drop impact separator, pass through the company of foundation
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, which can be on the lesser basis of additional mass
On, it can be obtained more apparent drop impact effect, wanted so that it is guaranteed that firer's separated structure coupling stiffness and fundamental frequency meet design
It asks.
Firer provided by the invention separates with drop impact separator, comprising: as the installing component of continuous media, is used for
It is arranged between device to be separated and Fire load, several holes, the center in each hole is offered in the middle part of the installing component
Line impacts path direction perpendicular to firer；With several particle components, each 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 integrally in circular ring shape or polygon.
Preferably, the radius r of particle described in each particle component 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
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 coefficient of friction 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, side length are the polyhedron of 0.001~30mm rule or the irregular polyhedrons that side length is 0.001~30mm；The particle
The surface configuration of the shell inner surface of component and the particle are as follows: 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 cylindrical body 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 feature is the material and shape and size of the particle, and the particle is filled out
Filling rate is 10%~100%.
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 is threadedly coupled with the fixed form between the installing component, is keyed, type face connects
It connects, swelling connection, pin connection, riveting, welding, bonding or interference connection.
For the prior art, the present invention proposes above-mentioned firer in another way and separates with drop impact scheme.With existing skill
Art is compared, and this programme is provided with continuous media and Discontinuous transmission on impact path, establishes multipath 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 the kinetic energy that impact generates
The elasticity energy and thermal energy for being converted to particIe system, block the quick transmitting 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 obvious drop impact to X, Y, Z-direction, and can be resistant to it is high and
Extremely low temperature, so that the additional mass being embedded between device and Fire load to be separated is smaller.So set, not increasing line
Effectively dissipate the priming system explosion big magnitude energy of bring in the case where displacement and angular displacement, and then guarantees the essence of protected structure
Cipher telegram subcomponent is without damage.
Detailed description of the invention
Fig. 1 is that firer described in specific embodiment separates with the structural schematic diagram for dropping percussion mechanism；
Fig. 2 is that firer shown in Fig. 1 separates with the main view for dropping percussion mechanism；
Fig. 3 is the A-A cross-sectional view 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 test shock loading of not set component 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 embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
It is separated based on continuous media-Discontinuous transmission firer with drop impact separation dress using what present embodiment provided
Set, the high-energy stress wave after gunpowder explosion from the multipath Discontinuous transmission that solid continuous media is transmitted to 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 grain
The elasticity energy and thermal energy of subsystem, block the quick transmitting 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 separation system as description main body in present embodiment
Firer is stated to separate with drop percussion mechanism.It should be appreciated that general firer's separation system and its concrete function structure, the application asked
Firer's separation scheme of protection is asked not constitute substantive limitation.
Referring to Figure 1, the structural schematic diagram with drop percussion mechanism should be separated for firer described in present embodiment.
As shown, the firer separates, 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, so that 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 obvious drop impact, so that being embedded in 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 of bring, and then guarantee 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 that firer described in Fig. 1 separates with the main view for dropping percussion mechanism, Fig. 3
For the A-A cross-sectional view of Fig. 2.
As shown, the cross section of the installing component 1 has middle part vertical section, upper and lower side is respectively used to and dress to be separated
It sets and is fixedly connected with Fire load, offer several holes 111 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 positional relationship 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 separates 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 greater 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 the situation of original not set particle component 2.
In addition, through analyze compare Parameters variation when ability dissipation factor changing rule, it was determined that Fe coatings
Main two parameters of material and partial size for considering particle.Wherein, the principle for selecting particle material is to guarantee 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
Partial 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:
diFor the particle component plug-in opening the center of circle along firer impact path direction to the installing component parting surface
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 coefficient of friction 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, also can choose spheroid, length shaft length exists
The section 0.001~30mm；Or the polyhedron or irregular polyhedrons of rule, size dimension is in 0.001~30mm
Section.
In order to obtain optimal Dissipated energy effect, for the surface of shell 21 inner surface and particle 22 of particle component 2,
Can be each configured to: the mantle friction factor is 0.01~0.99, and surface recovery coefficient is 0.01~1.At surface hardness
Reason, can be obtained above-mentioned surface parameter, wherein the density of particle is 0.1~30g/mm, and then obtains preferably drop impact effect
Fruit.Wherein, 21 inner surface of shell of particle component 2 can be cylinder shown in figure, can also be according to concrete engineering needs
Cuboid or other polyhedrons are set as, inner wall can be smooth surface or non-smooth surface.Specifically, the shell of particle component 2
21 wall thickness are 0.01~30mm, and specific size should be according to real impact source, impact path, structural impact response spectra in different frequency range
Characteristic and particle density, particle diameter, particle volume filling rate, particle surface friction factor, particle surface recovery coefficient
Comprehensive analysis combines the effect of flowering structure by comparison 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 adopt a split structure, such as
Shown in Fig. 3, the shell ontology 211 which there is an inserting to be fixed in the vertical section 11 of installing component 1, the shell ontology 21
Open end uses the end cap 212 of threaded adapter, screws the end cap 212 after particle filled composite 22.Further, particle component 2 and peace
Fill component 1 between fixed form can for threaded connection, key connection, the connection of type face, swelling connection, pin connection, riveting, welding,
Bonding or interference connection, are reliably fixedly connected with relationship to establish.
In order to adapt to the otherness difference of separation operating condition, 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, fills identical and/or different characteristic in each isolated chambers
The particle 22, wherein the feature is the material and shape and size of 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 situation larger with Axial changes suitable for 2 cavity shape size of particle component.Certainly, particle component 2
The contact area between 2 inner wall of particle and shell can also can be effectively increased, specifically by class with radial separations for multiple isolated chambers
Particle can be played to the maximum extent to match its best particle respectively like the region progress taxonomic revision of interior shape size
22 effect.
Here, the arrangement mode about particle component 2, on the basis of guaranteeing 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, as shown in connection with fig. 2,
It is impacted on path in firer connection interface firer, makes to 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 can also the mode in gap (not shown) is set.
It should be noted that above-described embodiment that present embodiment provides, as long as core idea and the consistent fire of this programme
Application of the work point from drop impact is within the scope of the present application.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 splice camber, rectangle by various sizes of sub- frame according to practical structures situation
Or the installing component of polygon, those skilled in the art, which are based on this programme core idea, may be implemented, and so it will not be repeated.
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 (9)
1. firer separates with drop impact separator characterized by comprising
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.
2. firer as described in claim 1 separates with drop impact separator, which is characterized in that the installing component it is transversal
Face has middle part vertical section, and upper and lower ends are respectively used to be fixedly connected with device to be separated and Fire load, several holes
It is arranged in the middle part vertical section.
3. firer as claimed in claim 2 separates with drop impact separator, which is characterized in that the installing component is integrally in
Circular ring shape or polygon.
4. firer as claimed in claim 2 or claim 3 separates 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 coefficient of friction between particle and the shell inner surface；
K1For particle stiffness coefficient；
ρ is the density of particle.
5. firer as claimed in claim 2 separates 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, side length be 0.001~30mm rule it is more
The irregular polyhedrons that face body or side length are 0.001~30mm；The shell inner surface of the particle component and the table of the particle
Face is configured that 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.
6. firer as claimed in claim 5 separates 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 cylindrical body 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.
7. firer as described in claim 1 separates with drop impact separator, which is characterized in that the housing cavity is divided into
At least two isolated chambers, identical and/or different characteristic the particle of the interior filling of each isolated chambers, wherein described
Feature is the material and shape and size of the particle, and the filling rate of the particle is 10%~100%.
8. firer as claimed in claim 2 separates 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.
9. firer as described in claim 1 separates with drop impact separator, which is characterized in that the particle component with it is described
Fixed form between installing component is threaded connection, key connection, the connection of type face, swelling connection, pin connection, riveting, welding, bonding
Or interference connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820705225.0U CN208248520U (en) | 2018-05-11 | 2018-05-11 | Firer separates with drop impact separator |
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| CN201820705225.0U CN208248520U (en) | 2018-05-11 | 2018-05-11 | Firer separates with drop impact separator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423200A (en) * | 2018-05-11 | 2018-08-21 | 厦门振为科技有限公司 | Firer based on continuous media-Discontinuous transmission detaches with drop impact separator |
| CN114180109A (en) * | 2021-12-09 | 2022-03-15 | 上海宇航系统工程研究所 | Impact retarding device based on particle damping |
| RU2819664C1 (en) * | 2023-12-19 | 2024-05-22 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | High-speed compartment separation device |
-
2018
- 2018-05-11 CN CN201820705225.0U patent/CN208248520U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423200A (en) * | 2018-05-11 | 2018-08-21 | 厦门振为科技有限公司 | Firer based on continuous media-Discontinuous transmission detaches with drop impact separator |
| CN114180109A (en) * | 2021-12-09 | 2022-03-15 | 上海宇航系统工程研究所 | Impact retarding device based on particle damping |
| CN114180109B (en) * | 2021-12-09 | 2024-04-16 | 上海宇航系统工程研究所 | Impact relieving device based on particle damping |
| RU2819664C1 (en) * | 2023-12-19 | 2024-05-22 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | High-speed compartment separation device |
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