CN110044736A - Different materials are evaluated to the experimental rig and method of explosion wave attenuation degree - Google Patents
Different materials are evaluated to the experimental rig and method of explosion wave attenuation degree Download PDFInfo
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- CN110044736A CN110044736A CN201910237862.9A CN201910237862A CN110044736A CN 110044736 A CN110044736 A CN 110044736A CN 201910237862 A CN201910237862 A CN 201910237862A CN 110044736 A CN110044736 A CN 110044736A
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- inner housing
- padded coaming
- detonator
- housing
- different materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
Abstract
The invention discloses a kind of evaluation different materials to the experimental rig and method of explosion wave attenuation degree, including outer housing and inner housing, the outer housing is two semicircles of equal part, and outer housing fastens the outside of inner housing by flange, padded coaming A is respectively equipped between outer housing and inner housing, padded coaming B, PCB pressure sensor (or foil gauge of model BFH120-3AA) is laid on the inside of inner housing, PVDF piezometer is laid between outer housing and padded coaming, the bottom of inner housing is fixed with detonation bracket, the fixed detonator of the pedestal upper end that detonates, there is dismountable cover plate in device upper end.In the case that the present invention only carries out an explosive test, the degree of the padded coaming decaying explosion wave of two kinds of unlike materials can be evaluated, the advantages that device has small in size, light weight, operation convenient simultaneously, and test dose is small, the explosion vibration and small shot noise of generation.
Description
Technical field
The present invention relates to explosion testing device technical fields more particularly to a kind of evaluation different materials to explosion wave
The experimental rig and method of attenuation degree.
Background technique
Explosive container is a kind of interior height for controlling explosive charge and generating the ill-effects such as shock wave, noise, explosion flying
Press chemical industry equipment.When explosive test, the safety of experimenter, test equipment and peripheral facilities can protect by explosive container.
Therefore, it can be widely used in explosive performance test ing, explosive processing and the destruction of discarded explosive and some Military Applications
Field.
In civil explosive industry, " steel plate-padded coaming-steel plate " special construction is applied to explosive storage cabinet, transport
In case and antiknock equipment, the effect for making it decay explosion hazard effect is much better than ordinary construction explosion equipment.It is led in Military Application
Domain, it is slow using special interlayer in order to which explosion wave of decaying is to human body or facility destruction if naval vessels shock resistance is fought
Rushing material structure can effective attenuation blast impulse wave energy.Therefore, it is necessary to which different materials can be evaluated to explosion by inventing one kind
The experimental rig and method of shock wave attenuation degree, the available blast impulse wave parameter when carrying out explosive test can be with
The extinction efficiency of different padded coaming shock waves is obtained, can determine whether the superiority and inferiority of different materials decaying explosion wave accordingly.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of evaluation different materials to explosion wave
The experimental rig and method of attenuation degree, as soon as two kinds of unlike materials can be evaluated in the case where only carrying out time explosive test
The degree of padded coaming decaying explosion wave, while the device has small in size, light weight, operation convenient, tests dose
It is small, the advantages that the explosion vibration and small shot noise of generation.
A kind of different materials of evaluating proposed by the present invention are to the experimental rig of explosion wave attenuation degree, including shell
Body and inner housing, the outer housing is two semicircles of equal part, and the outer housing is fastened on the inner housing by flange
Outside is equipped with padded coaming A, another described outer housing and the inner casing between one outer housing and the inner housing
It is equipped with padded coaming B between body, test sensing element is laid on the inside of the inner housing, between the outer housing and padded coaming
PVDF piezometer is laid, the bottom of the inner housing is fixed with detonation bracket, and the fixed detonator of detonation pedestal upper end is described interior
Shell upper end is removably equipped with cover board.
Preferably, the inner housing is bolted on device support stand, and device support stand and the inner housing
Between be equipped with damping material, damping material is styrofoam.
Preferably, the detonation bracket includes bottom plate and detonator fixed column, is additionally provided with mounting hole on bottom plate, mounting hole with
The bolt of the inner housing fixation matches, and passes through the bottom of the bottom plate of screw bolt passes detonation bracket, inner housing when in use
The support end face in portion, damping material and device support stand, is then fastened by nut, achievees the effect that fixed, inner housing
On further include detonator wire outlet, detonator wire outlet sequentially passes through detonation the bottom plate of bracket, the bottom of inner housing, vibration damping material
The support end face of material and device support stand.
Preferably, the inner wall of the inner housing is equipped with signal wire protective layer, and main purpose is avoided in blast process
The film flying of middle generation destroys the route of sensor, and inner housing bottom is additionally provided with signal outlet, and signal wire outlet sequentially passes through inner casing
The bottom of body, damping material and device support stand support end face.
Preferably, the test sensing element includes 113B32 type PCB pressure sensor or model BFH120-3AA
Foil gauge.
Described device proposed by the present invention different materials to the test method step of explosion wave attenuation degree such as
Under:
S1: the installation of padded coaming: first opening the flange connected on two semicircular outer housings, then will be to
The padded coaming A and padded coaming B of test are individually positioned on position corresponding with two outer housings, then clamp flange, will
Padded coaming is fixed between outer housing and inner housing；
S2: the installation of detonator: the flange between cover board and inner housing is opened, then upper end is fixed with to the detonation of detonator
Bracket is placed in inner housing, then passes through mounting hole by fastening screw, and corresponding with the through-hole of inner housing bottom, then
By the payment to a porter of detonator from the detonator wire of bottom export across；
S3: the connecting line of sensor is sequentially passed through sensor line protection channel and sensor connects by the installation of sensor
Wiring outlet, and sensor module is fixed on the inner wall of inner housing, while installing sensing in the corresponding position of outer housing
Device assembly；
S4: the fixation of device: by the through-hole of device with the through-hole on the device support stand equipped with vibration-absorptive material to it, and
So that sensor connecting line and detonator lead is passed through corresponding through-hole, device is fixed on device support stand by fastening screw
Later, cover board, and clamp flange are covered；
S5: the measurement of data: test equipment setting is in working condition, by blasting cap initiation, obtains data.
Compared with prior art, the beneficial effects of the present invention are:
(1) apparatus of the present invention operation is convenient
Relative to traditional large-scale explosive container, apparatus of the present invention small volume, light weight, easy to operate, test dose
Small, the explosion vibration and shot noise of generation are small, and device is easily installed in suitable place, and device dismounting padded coaming is just
It is prompt.
(2) various types of materials can be intuitively evaluated through the invention to the attenuation degree of explosion wave
The present invention passes through the explosive parameters tested out whether there is or not padded coaming, can intuitively evaluate all kinds of padded coamings to quick-fried
The attenuation degree of fried shock wave.
(3) padded coaming is chosen according to actual needs to be compared
One layer of padded coaming in " steel plate-padded coaming-steel plate " structure of the invention can be selected according to actual needs
It takes and replaces, can be tested after the two kinds of materials compared will be needed to be mounted on two specified positions.Only once risen
Under conditions of quick-fried experiment, the vibration damping situation of two kinds of different materials can be obtained.
Detailed description of the invention
Fig. 1 is experimental rig and side of a kind of evaluation different materials proposed by the present invention to explosion wave attenuation degree
The structural schematic diagram of method.
Fig. 2 is experimental rig and side of a kind of evaluation different materials proposed by the present invention to explosion wave attenuation degree
The sectional view of method.
Fig. 3 is experimental rig and side of a kind of evaluation different materials proposed by the present invention to explosion wave attenuation degree
The top view of the detonation bracket of method.
Fig. 4 is experimental rig and side of a kind of evaluation different materials proposed by the present invention to explosion wave attenuation degree
The partial enlarged view of the test position sensing element PVDF of method；
Fig. 5 is stress wave attentuation degree detecting structural schematic diagram.
In figure: 1- inner housing, 2- cover board, 3- flange, 4- outer housing, 5- test sensing element, 6- padded coaming A, 7- subtract
Shake material, 8- bolt, the outlet of 9- sensor signal lines, 10- device support stand, 11- padded coaming B, 12- bottom plate, 13- detonator
Fixed column, 14- detonation bracket, 15- detonator, 16- mounting hole, 17- signal wire protective layer, the outlet of 18- detonator wire, 19-PVDF
Piezometer, the outlet of 20-PVDF signal wire.
Specific embodiment
With reference to Fig. 1~4, experimental rig of the evaluation different materials proposed by the present invention to explosion wave attenuation degree, packet
Outer housing 4 and inner housing 1 are included, the outer housing 4 is two semicircles of equal part, and the outer housing 4 is tight by flange 3
Gu padded coaming A11 is equipped between one outer housing 4 and the inner housing 1 in the outside of the inner housing 1, another
Padded coaming B6 is equipped between the outer housing 4 and the inner housing 1, the sensitive member of a test is respectively laid in two sides in inner housing 1
Part 5, respectively lays a PVDF piezometer 19 between outer housing 4 and two sides padded coaming, PVDF piezometer using piezoelectric membrane and
Copper foil etc. is made, and the bottom of the inner housing 1 is fixed with detonation bracket 14, and 14 upper end of detonation bracket is for fixing thunder
The upper end of pipe 15, the inner housing 1 is fixed with cover board 2.
Inner housing 1 is fixed on device support stand 10 by fastening bolt 8, and described device support frame 10 with it is described interior
Damping material is equipped between shell 1, damping material is styrofoam, mainly plays and subtracts during Exploding test
The effect of vibration, the rigid contact between avoiding device and device support stand 10.
The bracket 14 that detonates includes bottom plate 12 and detonator fixed column 13, is additionally provided with mounting hole 16 on bottom plate 12, mounting hole 16 with
Inner housing 1 is matched with fixed fastening bolt 8, sequentially passes through the bottom plate of detonation bracket 14 by fastening bolt 8 when in use
12, the support end face of the bottom of inner housing 1, damping material and device support stand 10, is then reinforced by bolt, is reached
Fixed effect further includes detonator wire outlet 18 on the inner housing 1, and the detonator wire outlet 18 sequentially passes through detonation
The bottom plate 12 of bracket 14, the bottom of inner housing 1, damping material and device support stand 10 support end face.
The inner wall of inner housing 1 is anti-equipped with PCB pressure sensor (or foil gauge of model BFH120-3AA) signal wire
Sheath 17, main purpose are that the film flying generated in blast process is avoided to destroy PCB pressure sensor (or model
The foil gauge of BFH120-3AA) signal wire, 1 bottom of inner housing is additionally provided with signal wire outlet 9, and sensor signal lines outlet is 9 successively
Across the support end face of the bottom of inner housing 1, damping material and device support stand 10.
Testing sensing element includes 113B32 type PCB pressure sensor or the foil gauge of model BFH120-3AA.
Combined with specific embodiments below the present invention is made further to explain:
Embodiment 1
S1: the installation of padded coaming: first opening the flange connected on two semicircular outer housings, then will be to
Two identical foamed aluminium materials of test are individually positioned on the corresponding position of two outer housings, and then clamp flange, will steep
Foam aluminium is fixed between outer housing and inner housing；
S2: testing the installation of sensing element, and PCB pressure sensor (or foil gauge of model BFH120-3AA) is believed
Number line sequentially passes through signal wire protective layer and signal wire outlet, and by 113B32 type PCB pressure sensor (or model
The foil gauge of BFH120-3AA) it is fixed on the inner wall of inner housing；Open outer housing flange, outer housing and padded coaming it
Between lay PVDF piezometer, and even good PVDF piezometer signal wire；
S3: the installation of detonator: the flange between cover board and inner housing is opened, then upper end is fixed with to the detonation of detonator
Bracket is placed in inner housing, then passes through mounting hole by fastening bolt, and corresponding with the through-hole of inner housing bottom, then
By the payment to a porter of detonator from the detonator wire of bottom export across；
S4: the fixation of device: the through-hole of device is aligned with the through-hole on the device support stand for being equipped with damping material, and
Signal wire and detonator lead is set to pass through corresponding through-hole, after device is fixed on device support stand by fastening bolt, lid
Upper cover plate, and clamp flange；
S5: the setting of test sensing element is in working condition, by blasting cap initiation, obtains data.
Embodiment 2
It changes a foamed aluminium padded coaming in embodiment 1 into red copper, repeats S1~S5 step.
Attenuation degree calculated examples:
In structure of the stress wave through " steel plate-padded coaming-steel plate " as shown in figure 5, wherein A is steel plate, B is slow
Rush material, σ0And σ1Respectively stress wave activity in inner wall stress, outside wall surface stress is acted on after padded coaming is decayed.Root
Correlation estimation, the calculation formula of wave impedance are as follows: Z=ρ c are carried out to transmission coefficient according to theory of stress wave
The calculation formula of transmission coefficient is (passing to material 2 from material 1):
The density for taking steel plate is 7800kg/m3, velocity of wave 5000m/s；The density of foamed aluminium is 500kg/m3, velocity of wave is
600m/s；The density of foamed plastic is 1150kg/m3, velocity of wave 300m/s；The density of red copper is 8940kg/m3, velocity of wave is
3670m/s；The density of the foamed aluminium of compacting is 1635kg/m3, velocity of wave 6500m/s.
By Z=ρ c, foamed aluminium, red copper, is compacted the wave impedance of foamed aluminium, steel plate as shown in table 1 at foamed plastic.
The wave impedance of 1 different medium of table
The calculating of transmission coefficient is as follows,
By the transmission coefficient of steel plate to padded coaming:
Transmission coefficient of the padded coaming to steel plate:
If being σ from steel plate stress intensity of wave0, then through foamed aluminium reach steel plate after stress intensity of wave are as follows:
σ1=T1T2σ0
The stress for reaching steel plate by different padded coamings is as shown in table 2.
Table 2 reaches the stress of steel plate by different padded coamings
Add σ after foamed aluminium0About σ133 times, can weaken the intensity of stress wave in steel plate significantly, reduce explosion punching
Hit wave dither effect.Add σ after foamed plastic0About σ129 times, can also weaken the intensity of stress wave in steel plate significantly, subtract
Small explosion wave dither effect, effect are slightly inferior to foamed aluminium.Compared to foamed plastic and foamed aluminium, it is compacted foamed aluminium and purple
Copper is very poor as cushion performance of the padded coaming to stress wave.
Pass through above calculating, it is known that " steel plate-padded coaming-steel plate " structure has than pure steel plate preferably to decline
Subtract the ability of explosion wave, attenuating depends on material, the density etc. of padded coaming.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited to
This, anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention
And its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of evaluation different materials are to the experimental rig of explosion wave attenuation degree, which is characterized in that including outer housing and
Inner housing, the outer housing is two semicircles of equal part, and the outer housing is fastened on the outside of the inner housing by flange,
Padded coaming A is equipped between one outer housing and the inner housing, between another described outer housing and the inner housing
Test sensing element is laid equipped with padded coaming B, on the inside of the inner housing, lays PVDF between the outer housing and padded coaming
Piezometer, the bottom of the inner housing are fixed with the detonation bracket for fixing detonator, and the inner housing upper end is removably
Equipped with cover board.
2. a kind of evaluation different materials according to claim 1 are to the experimental rig of explosion wave attenuation degree, special
Sign is that the inner housing is bolted on device support stand, and between described device support frame and the inner housing
Equipped with damping material.
3. a kind of evaluation different materials according to claim 2 are to the experimental rig of explosion wave attenuation degree, special
Sign is that the damping material is styrofoam.
4. a kind of evaluation different materials according to claim 2 are to the experimental rig of explosion wave attenuation degree, special
Sign is that the detonation bracket includes bottom plate and detonator fixed column, and mounting hole, the mounting hole and institute are additionally provided on the bottom plate
The bolt for stating inner housing fixation matches, and further includes detonator wire outlet on the inner housing, and the detonator wire outlet is successively
Across the support end face of the detonate bottom plate of bracket, the bottom of inner housing, vibration-absorptive material and device support stand.
5. a kind of evaluation different materials according to claim 2 are to the experimental rig of explosion wave attenuation degree, special
Sign is that the inner wall of inner housing is equipped with signal wire protective layer, and the inner housing bottom is additionally provided with signal wire outlet, the signal
Line outlet sequentially passes through the support end face of the bottom of inner housing, damping material and device support stand.
6. a kind of evaluation different materials piece according to claim 1 are to the experimental rig of explosion wave attenuation degree,
It is characterized in that, the test sensing element is PCB sensor or foil gauge.
7. a kind of device as described in claim 1 is in different materials to the test method of explosion wave attenuation degree, spy
Sign is that method and step is as follows:
S1: the installation of padded coaming: first opening the flange connected on two semicircular outer housings, then will be to be tested
Padded coaming A and padded coaming B is individually positioned on position corresponding with two outer housings, then clamp flange, by fender
Material is fixed between outer housing and inner housing；
S2: the installation of detonator: the flange between cover board and inner housing is opened, then puts the detonation bracket that upper end is fixed with detonator
It sets in inner housing, mounting hole is then passed through by fastening screw, and corresponding with the through-hole of inner housing bottom, then by detonator
Payment to a porter from the detonator wire of bottom export across；
S3: the connecting line of sensor is sequentially passed through sensor line protection channel and sensor connecting line by the installation of sensor
Outlet, and sensor module is fixed on the inner wall of inner housing, while installing sensor group in the corresponding position of outer housing
Part；
S4: the fixation of device: by the through-hole of device with the through-hole on the device support stand equipped with vibration-absorptive material to it, and make to sense
Device connecting line and detonator lead pass through corresponding through-hole, after device is fixed on device support stand by fastening screw, lid
Upper cover plate, and clamp flange；
S5: the measurement of data: test equipment setting is in working condition, by blasting cap initiation, obtains data.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849571A (en) * | 2019-12-03 | 2020-02-28 | 李治平 | Civil engineering structure explosion damage experiment platform |
| CN111024759A (en) * | 2019-11-26 | 2020-04-17 | 山西江阳兴安民爆器材有限公司 | Exploder for detecting solid residues after frying and using method thereof |
| CN111272815A (en) * | 2020-03-11 | 2020-06-12 | 安徽理工大学 | Experimental device based on underwater explosion method and explosive explosion energy standardized evaluation method |
| CN111442868A (en) * | 2020-03-27 | 2020-07-24 | 西北核技术研究院 | Sensor lateral installation protection device for explosion test |
| CN112255319A (en) * | 2020-09-21 | 2021-01-22 | 清华大学 | Hearing protection device protection explosion pulse wave performance evaluation system |
| CN116735388A (en) * | 2023-08-15 | 2023-09-12 | 航天氢能科技有限公司 | System and method for testing anti-explosion performance of hydrogen explosion anti-explosion material |
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| CN207081679U (en) * | 2017-08-14 | 2018-03-09 | 安徽理工大学 | A kind of underwater static pressure explosive charge experimental provision |
| CN108746313A (en) * | 2018-05-18 | 2018-11-06 | 安徽理工大学 | A kind of vacuum blasting pot and its engineer application |
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| CN205894822U (en) * | 2016-06-06 | 2017-01-18 | 安徽理工大学 | Explosion container shock -absorbing structure |
| CN207081679U (en) * | 2017-08-14 | 2018-03-09 | 安徽理工大学 | A kind of underwater static pressure explosive charge experimental provision |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024759A (en) * | 2019-11-26 | 2020-04-17 | 山西江阳兴安民爆器材有限公司 | Exploder for detecting solid residues after frying and using method thereof |
| CN110849571A (en) * | 2019-12-03 | 2020-02-28 | 李治平 | Civil engineering structure explosion damage experiment platform |
| CN111272815A (en) * | 2020-03-11 | 2020-06-12 | 安徽理工大学 | Experimental device based on underwater explosion method and explosive explosion energy standardized evaluation method |
| CN111442868A (en) * | 2020-03-27 | 2020-07-24 | 西北核技术研究院 | Sensor lateral installation protection device for explosion test |
| CN111442868B (en) * | 2020-03-27 | 2021-06-08 | 西北核技术研究院 | Sensor lateral installation protection device for explosion test |
| CN112255319A (en) * | 2020-09-21 | 2021-01-22 | 清华大学 | Hearing protection device protection explosion pulse wave performance evaluation system |
| CN116735388A (en) * | 2023-08-15 | 2023-09-12 | 航天氢能科技有限公司 | System and method for testing anti-explosion performance of hydrogen explosion anti-explosion material |
| CN116735388B (en) * | 2023-08-15 | 2024-02-13 | 航天氢能科技有限公司 | System and method for testing anti-explosion performance of hydrogen explosion anti-explosion material |
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