CN203658180U - Blast wave simulation composite loading device - Google Patents
Blast wave simulation composite loading device Download PDFInfo
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- CN203658180U CN203658180U CN201420007174.6U CN201420007174U CN203658180U CN 203658180 U CN203658180 U CN 203658180U CN 201420007174 U CN201420007174 U CN 201420007174U CN 203658180 U CN203658180 U CN 203658180U
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- pipe body
- soil
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- blast wave
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Abstract
The utility model discloses a blast wave simulation composite loading device which comprises a blast chamber and a pipe body, wherein the blast chamber is a cuboid; the pipe body is connected with the blast chamber in a sealed mode; the pipe body is filled with air; a sensor is arranged at the tail end of the pipe body and is connected with an oscilloscope; the pipe body is divided into a first pipe body and a second pipe body; the first pipe body is close to the blast chamber; an opening is formed in the bottom of the second pipe body and is in contact with soil; multiple sensors are arranged in soil from top to bottom and are respectively connected with the oscilloscope through a wire. According to the device, a semi-underground protective engineering environment is fully simulated, change rules of wave front reflection of explosive shock waves and acting time of incident overpressure and dimensionless positive pressure, a relationship between a wall surface load at the end of the pipe body and the density of effective filling explosives and propagation and change rules of stress waves in soil in the pipe body are determined by measuring the waveforms of shock waves and reflective overpressure waves at different positions, and thus reference is provided for performance parameters during construction of semi-underground protective engineering.
Description
Technical field
The utility model relates to a kind of proving installation, particularly a kind of blast wave analog composite charger.
Background technology
The conventional weapon using in war is in the recent period to high precision, large equivalent development, and the explosion energy of conventional weapon is increasing, and explosion wave load has and in the past different features.But be that protection works develop period rapidly this period simultaneously, new material new technology is constantly applied in protection works, but still need to test in the wild in the experiment of the semi-underground protection works compressive resistance of test, and field test and expend explosive, and be difficult to simulate blast wave waveform accurately, still lack blast wave at present and impact the analog loading device of semi-underground engineering.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of blast wave analog composite charger, this device can simulated explosion thing the shock wave waveform that produces of blast, for the parameter of semi-underground protection works Chinese People's Anti-Japanese Military and Political College equivalent explosive shock wave is provided convenience, reduce with true environment in the error of blast impulse wave parameter, and save the dose of simulated explosion thing.
For achieving the above object, the utility model provides following technical scheme: a kind of blast wave analog composite charger, comprise shot room and body, shot room is a rectangular parallelepiped, body and shot room are tightly connected, in body, fill air, the end of body arranges first sensor, first sensor is connected with oscillograph by wire, body is divided into the first body and the second body, the first body and the second body are structure as a whole, the first body is near shot room, the bottom opening of the second body, the opening part of the second body contacts with soil, some the second sensors are from top to bottom evenly set in soil, the second sensor is connected with oscillograph by wire respectively.
Preferably, body is rectangular tube;
Preferably, the cross section of the first body is 0.8 × 0.4m, and the cross section of the second body is 0.8 × 1.2m, and the difference in height of the second body and the first body is 0.8m;
Preferably, the height of the soil in the second body is 0.8m;
Preferably, the total length of body is 22m, and the length of the first body is 7m;
Preferably, the length of shot room is respectively 2m, 1m, 1m.
Adopt technique scheme, body is divided into two parts, the fully environment of the semi-underground protection works of simulation, explosion wave along in body to front advancing, in the time that shock wave advances to body end termination, body end face reflection shock wave forms reflection overpressure ripple, the signal of collection is sent to oscillograph by first sensor, in oscillograph, demonstrate the waveform of explosion wave, the second sensor is sent to same oscillograph by the signal of collection, according to measuring soil shock wave waveform and the reflection overpressure waveform similar to true explosion environment, again by the wave front reflection of dimension Analysis deterrmination explosion wave and the Changing Pattern of the action time of incident superpressure and dimensionless malleation, pipe end wall load and the relation of effectively loading explosive density, soil stress wave propagation and Changing Pattern in body, performance parameter while construction for semi-underground protection works provides reference, reduce with true environment in the error of blast impulse wave parameter.
Body is set to rectangular tube, is convenient to fix; The cross section of the first body is 0.8 × 0.4m, and the cross section of the second body is 0.8 × 1.2m, and the difference in height of the second body and the first body is 0.8m, and the length of shot room is respectively 2m, 1m, 1m, body and shot room is distributed rationally, conserve space; The height of the soil in the second body is 0.8m, guarantees that the depth of soil of body contact is enough, is convenient to measure the wave propagation of soil internal stress; The total length of body is 22m, and the length of the first body is 7m, and the cross section that the second body is contacted with soil is enough large, and length long enough is convenient to record the waveform of explosive explosion wave.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Wherein, 1. shot room 2. body 3. first body 4. second body 5. soil 6. first sensor 7. second sensors.
Embodiment
Below in conjunction with accompanying drawing, by the description to embodiment, the utility model is described further:
As shown in Figure 1, the utility model blast wave analog composite charger, comprise shot room 1 and body 2, shot room 1 is a rectangular parallelepiped, the length of shot room 1, wide, height is respectively 2m, 1m, 1m, the sidewall of shot room 1 has aperture, body 2 is tightly connected with shot room 1, body 2 is filled air, the end of body 2 arranges first sensor 6, first sensor 6 is connected with oscillograph by wire, body 2 is divided into the first body 3 and the second body 4, the total length of body is 22m, and the length of the first body 3 is 7m, the length of the second body 4 is 15m, body 2 is set to rectangular tube, and the cross section of the first body 3 is 0.8 × 0.4m, the cross section of the second body 4 is 0.8 × 1.2m, the first body 3 and the second body 4 are structure as a whole, the first body 3 is near shot room 1, the bottom opening of the second body 4, the opening part of the second body 4 contacts with soil 5, the height of the soil 5 in the second body 4 is 0.8m, some the second sensors 7 are from top to bottom evenly set in soil 5, the second sensor 7 is connected with oscillograph by wire respectively.
Adopt after technique scheme, body 2 is divided into the first body 3 and the second body 4, and allow in the second body 4 and enter the soil 5 that 0.8m is high, the fully environment of the semi-underground protection works of simulation, when explosion wave interior when front advancing along body 2, shock wave advances to body 2 end terminations, body 2 end face reflection shock waves form superpressure ripple, the signal of collection is sent to oscillograph by first sensor 6 and the second sensor 7, in oscillograph, demonstrate the stress wave in waveform and the soil 5 of reflection overpressure ripple, can determine the Changing Pattern of the wave front reflection of explosion wave and the action time of incident superpressure and malleation according to the waveform of two kinds of ripples, body 2 termination wall loads and the relation of effectively loading explosive density, soil stress wave propagation and Changing Pattern in body 2, performance parameter while construction for semi-underground protection works provides reference, reduce with true environment in the error of blast impulse wave parameter.
Body 2 is set to rectangular tube, is convenient to fixing body 2; The cross section of the first body 3 is 0.8 × 0.4m, and the cross section of the second body 4 is 0.8 × 1.2m, and the difference in height of the second body 4 and the first body 3 is 0.8m, and the length of shot room 1 is respectively 2m, 1m, 1m, body 2 and shot room 1 is distributed rationally, conserve space; The height of the soil 5 in the second body 4 is 0.8m, guarantees that soil 5 degree of depth that the second body 4 contacts are enough, is convenient to measure soil 5 internal stress wave propagations; The total length of body 2 is 22m, and the length of the first body 3 is 7m, and the cross section that the second body 4 is contacted with soil 5 is enough large, and length long enough is convenient to record the waveform of explosive explosion wave.
In use, first explosive is put into the center of shot room 1, explosive connects detonator, and detonator stretches out by the aperture of opening on shot room 1 sidewall again, while experiment, and the explosive igniting in shot room 1 by lighting detonator.
The first stage of experiment is the debug phase, in this stage, the primacord fuse that use density is 12g/m, as explosive source, is positioned over the center of shot room 1, the blast wave waveform producing when changing the dose of primacord fuse and the position of measuring point, calculates the exact formulas of the dimensional analysis of this device; Subordinate phase is the official test stage, utilize dimensional analysis that explosive load and the quick-fried some position of proving installation distance of shot room 1 are set, draw the basic waveform that can simulate large equivalent conventional weapon, carry out small adjustment according to the order that normal reflection of shock wave pressure is ascending, until simulate the accurate waveform of the large equivalent conventional weapon needing.
By carrying out simulated explosion Dynamic load of nuclear blast in the interior change explosive load of shot room 1, there is very high economic benefit, can draw by experiment, in shot room 1, put into 13.65g primacord fuse, the Dynamic load of nuclear blast that can to produce wave front reflection overpressure and be 0.1MPa, positive pressure time be 100ms.If but will test in the wild, according to the calculating of blast scaling law, needing the TNT of 110T, contact surface burst in the distance distance of quick-fried heart 126m, could produce the Dynamic load of nuclear blast with apparatus of the present invention equivalence.Explosive load the latter of both needs is the former 8,000,000 times, and this equipment is significantly reduced expenses as seen.
This device can be debugged out suitable shock wave waveform by changing explosive load, and this waveform is similar to large equivalent conventional weapon blast.On the basis of experiment, draw to draw a conclusion by dimension theory: in body 2, shock wave parameter depends on three dimensionless variables, be the effective charge density, body 2 of explosive with the ratio of shot room sectional area, measuring point apart from the distance of shot room 1 and the ratio of body 2 effective diameters, as instructing and take experimental result as basis, draw explosion wave that air and the two medium blast waves of soil produce in the analogue means propagation law in body 2.This device has solved blast wave problem of modelling in air and the two media of soil, utilizes air-shock wave that this equipment produces and soil stress ripple can solve semi-underground engineering and loads an inhomogeneous difficult problem.The interior shock wave parameter of body 2, i.e. reflection overpressure, incident superpressure and the dimensionless positive pressure time, can calculate by dimension analytical formula.In the time that in soil 5, water cut is lower, soil 5 water cut are 20% left and right, and soil 5 inner structure pressure are along with soil 5 degree of depth increase and reduce; In the time that the interior water cut of soil 5 is higher, water cut is 25% left and right, and soil 5 is under finite depth, and pressure is unattenuated along with soil 5 degree of depth increases.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (6)
1. a blast wave analog composite charger, comprise shot room (1) and body (2), shot room (1) is a rectangular parallelepiped, the sidewall of shot room (1) has aperture, described body (2) is tightly connected with shot room (1), body (2) is filled air, the end of body (2) arranges first sensor (6), described first sensor (6) is connected with oscillograph by wire, it is characterized in that: described body (2) is divided into the first body (3) and the second body (4), the first body (3) is structure as a whole with the second body (4), described the first body (3) is near shot room (1), the bottom opening of the second body (4), the opening part of the second body (4) contacts with soil (5), some the second sensors (7) are from top to bottom evenly set in soil (5), described the second sensor (7) is connected with oscillograph by wire respectively.
2. blast wave analog composite charger according to claim 1, is characterized in that: described body (2) is rectangular tube.
3. blast wave analog composite charger according to claim 2, it is characterized in that: the cross section of first body (3) of described body (2) is 0.8 × 0.4m, the cross section of the second body (4) is 0.8 × 0.8m, and the second body (4) is 0.4m with the difference in height of the first body (3).
4. blast wave analog composite charger according to claim 3, is characterized in that: the height of the soil (5) in described the second body (4) is 0.4m.
5. blast wave analog composite charger according to claim 1, it is characterized in that: the total length of described body (2) is 22m, and the length of the first body (3) is 7m.
6. blast wave analog composite charger according to claim 1, is characterized in that: the length of described shot room (1) is respectively 2m, 1m, 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007174.6U CN203658180U (en) | 2014-01-06 | 2014-01-06 | Blast wave simulation composite loading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007174.6U CN203658180U (en) | 2014-01-06 | 2014-01-06 | Blast wave simulation composite loading device |
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| CN203658180U true CN203658180U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420007174.6U Expired - Fee Related CN203658180U (en) | 2014-01-06 | 2014-01-06 | Blast wave simulation composite loading device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743638A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Simulated composite loading device for explosive wave |
| CN105258585A (en) * | 2015-10-29 | 2016-01-20 | 大连理工大学 | Method for designing hybrid fiber composite anti-explosion tank |
| CN106932286A (en) * | 2017-04-13 | 2017-07-07 | 太原科技大学 | A kind of plane detonation loading experimental apparatus based on hot spot-effect |
-
2014
- 2014-01-06 CN CN201420007174.6U patent/CN203658180U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743638A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Simulated composite loading device for explosive wave |
| CN105258585A (en) * | 2015-10-29 | 2016-01-20 | 大连理工大学 | Method for designing hybrid fiber composite anti-explosion tank |
| CN106932286A (en) * | 2017-04-13 | 2017-07-07 | 太原科技大学 | A kind of plane detonation loading experimental apparatus based on hot spot-effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20150106 |
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| EXPY | Termination of patent right or utility model |