CN107101873A - It is a kind of measure material under water under detonation dynamic response experimental provision - Google Patents
It is a kind of measure material under water under detonation dynamic response experimental provision Download PDFInfo
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- CN107101873A CN107101873A CN201710378476.2A CN201710378476A CN107101873A CN 107101873 A CN107101873 A CN 107101873A CN 201710378476 A CN201710378476 A CN 201710378476A CN 107101873 A CN107101873 A CN 107101873A
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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
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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
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Abstract
The invention belongs to explosion mechanics and Experiments of Machanics technical field, and in particular to a kind of measurement material under water under detonation dynamic response experimental provision.Device includes reference material known to the unknown detected materials of cistern system, dynamometry support system, measuring system, mechanical property parameters and mechanical property parameters, reference material is tested first in experiment, the material of reference material mechanical property parameters known to, and reference material is as the size of detected materials, then detected materials are tested, the signal that collects will be tested twice and contrast the dynamic response and the basic mechanical property parameters of detected materials that obtain detected materials under water under shock.Experimental provision can truly simulate dynamic response of the different materials to underwater blast wave, have the advantages that to have a wide range of application compared with traditional live underwater explosion experiment, it is simple to operate, greatly reduce experimental cost in the case where identical purpose can be reached.Meanwhile, moving up and down for sample platform can be realized by rotation and lifting bar, it is achieved thereby that the measurement to the dynamic response under different size materials under water shock.
Description
Technical field
The invention belongs to explosion mechanics and Experiments of Machanics technical field, and in particular to one kind measurement variety classes, different chis
The experiment dress of the basic mechanical performance parameter of very little material dynamic response under water under shock and measurement material
Put.
Background technology
Offshore engineering structure generally works under the adverse circumstances such as seawater corrosion, high/low temperature, transient impact load, bears
Dominating impact load includes collision, the effect of three dimensional fluid load etc..In addition, ship structure is also faced with weapon strike threat, it must answer
To come from the water surface and under water blast impulse wave load effect.
Underwater demolition can discharge big energy suddenly, so as to generate shock wave and a large amount of HTHP bubbles.People are very
The research of underwater demolition load and its communication process is early begun to.Hilliar summarizes some underwater demolitions of the late 19th century
Experiment, and attempt to measure pressure (the Experiment in the underwater in the lower water of explosive load effect
Explosive stretch forming of clamped circular blanks.1966), and in air and rock mass
The most significantly different of explosion is that underwater demolition positive pressure of shock wave peak value is high, decay is slow, it is wide to involve scope, in neighbouring water
Structural damage effect is more serious than land.
At present, the experimental study acted on marine structure for underwater blast wave is less, and present analysis is under water
Structure is mainly limited to empirical method, analytic method and numerical method three major types by the dynamic response after shock.Empirical method
It is, according to some standard impulse curves, such as half-sine wave, trapezoidal wave, triangular wave, to carry out impact test, obtains some experiences public
Formula and chart estimate that the impact acceleration of structure is responded；This method is simple, but low precision, the higher occasion of unsuitable requirement；Solution
Analysis method is dynamic response of the labor submerged structure by the receiving pressure on surface after blast impulse, then analytical structure；This method essence
Degree is high, but is only applicable to structure and the relatively regular simple question of boundary geometry, such as spherical shell, unlimited Circular Cylindrical Shells and ellipsoid shell
Deng；It is very tired accurately to solve underwater complex structure by the dynamic response after shock with empirical method and analytic method
Difficult, and problems can be solved well using numerical method, theoretically, numerical simulation can include almost whole blast
Process, earthquake involve shock motion process (near field and far field).
The main method for numerical simulation of blast impulse effect technical field include Finite Element, finite difference calculus, have
Limit volumetric method, gridless routing etc..The development of finite difference method and dynamic finite element method is more ripe, is current impact
Most two methods are applied in structural dynamic response numerical computations under load action, such as Hu Gangyi is managed based on Flugge shells
Fluid structurecoupling relation is asked by establish cylindrical shell and water, the incident underwater demolition load of plane has been solved using finite difference method
Differential equation of motion (the lower Composite Cylindrical Shell of underwater shock load effect of the lower endless composite cylinder axisymmetrical laminated shell of effect
Elastic response .2010).When structure is discontinuous media, people have developed Discrete-parcel method, finite rock block method, numerical value again
Manifold method etc. is difficult to prove the accuracy of the above method due to lacking necessary experimental verification to solve problems.Thus,
Pass through the dynamic response under laboratory facilities research marine structure and the material under water effect of blast impulse wave load and shock resistance
Effect is particularly important.
Existing laboratory facilities concentrate on pond explosion test and the experiment of equivalent target plate, controllable due to traditional explosion test
Property poor, efficiency is low, cost is high, danger coefficient is high, the shortcomings of require high to experimental situation, while equivalent target plate tests reality to be reached
The effect of border underwater explosion also has certain difficulty, thus a kind of measurement material of design dynamic response under detonation under water
Experimental provision by with important engineering significance, research marine structure material structure is exploded in shock wave under water
Under dynamic response and its explosion-and-knock resistant performance there is vital application value.
At present, Northwestern Univ USA, the Beijing Institute of Technology of Georgia Tech and the country, Harbin industry are big
The schools such as, Institutes Of Technology Of Nanjing have carried out the design and research of the equivalent loading experimental apparatus of underwater explosion respectively, achieve one
Fixed progress.But because the research for actual underwater explosion experimental provision and design have certain difficulty, underwater explosion is real
The research of experiment device is relatively fewer, and it is therefore necessary to invent one kind quickly and easily measurement structure material to explode under water punching
The experimental provision of the dynamic response hit under ripple effect.
The content of the invention
It is an object of the invention to provide one kind measurement variety classes, various sizes of material, explosion wave is made under water
The experimental provision of the basic mechanical performance parameter of dynamic response and measurement material under.
The object of the present invention is achieved like this：
It is a kind of measure material under water under detonation dynamic response experimental provision, including cistern system 1, dynamometry base
Reference material, its reclaimed water known to the unknown detected materials of system 2, measuring system 3, mechanical property parameters and mechanical property parameters
Case system 1 includes hanger 1-1, uncovered water tank 1-2, water tank supporting plate 1-3, tank bracket 1-4；Dynamometry support system 2 includes examination
Sample platform 2-1, waterproof cap holder 2-2, tarpaulin 2-3, elevating lever 2-4, elastic sensing element connecting seat 2-5, nut spanner disk
2-6, lifting nut 2-7, base sleeve 2-8, key 2-9, base support 2-10；It is quick that measuring system 3 includes foil gauge 3-1, elasticity
Sensing unit 3-2 and deformeter 3-3, described detected materials and the length, width and height of reference material are all identical, detected materials or reference
Material is placed on sample platform 2-1 center through circular hole；Sample platform 2-1 and four elastic sensing element connecting seat 2-
Equally spaced installed successively on 4 elastic sensing element 3-2, elastic sensing element 3-2 outer surface between 5 and post foil gauge 3-
1；Elevating lever 2-4 outer surface has helicitic texture, the upper surface and uncovered water tank 1-2 bottom plates of detected materials or reference material
Lower surface is located at same level.
Described uncovered water tank 1-2, water tank supporting plate 1-3, detected materials or reference material, sample platform 2-1, tarpaulin
2-3, waterproof cap holder 2-2, elevating lever 2-4, elastic sensing element 3-2, base sleeve 2-8, key 2-9, base support 2-10 from
Top to bottm is sequentially placed and center of gravity is on same axis.
Described detected materials or the mechanical property of reference material refer to what material was showed under the effect of various load
Resistance, including intensity, plasticity, toughness and intensity.
Described uncovered water tank 1-2 bottom plate has a circular hole, two respectively with water tank supporting plate 1-3 middle position
Circular hole size shape is identical, and the diameter of detected materials or reference material is less than the diameter of circular hole.
Described hanger 1-1 is placed on uncovered water tank 1-2 outer walls, and hanger 1-1 is located at sustained height and hanger 1-1 number
Amount is at least 3.
Described hanger 1-1 is connected by suspension line with explosive, explosive is sheet explosive, and explosive horizontal center is placed on
At a certain position inside uncovered water tank 1-2, explosive underwater penetration is more than water tank supporting plate 1-3 height and less than uncovered water tank
The size and quality all same of 1-2 height, every time experiment explosive used.
Tarpaulin 2-3 is mounted with the outside of described elastic sensing element 3-2.
Described elevating lever 2-4 lower semisection has two grooves, two groove interval 180 degrees centered on axis, two
It is individual to be located at base sleeve 2-8 lower middles position respectively with the hole of width with groove, between two circular cavities are centered on axis
Every 180 degree, two size and shape identical key 2-9 are located in two circular cavities respectively.
The circular hole in described uncovered water tank 1-2 bottom plates center and placement in the middle of detected materials or reference material one with it is to be measured
Material or reference material size identical waterproofing membrane.
The beneficial effects of the present invention are：
The present invention propose it is a kind of measure material under water under detonation dynamic response experimental provision, pass through and adjust examination
Sample platform 2-1 height allows the upper surface of detected materials or reference material and uncovered water tank 1-2 bottom plates to be located at same level,
Reference material is tested first during experiment, reference material using known mechanical property parameters material, and reference material with
The size of detected materials is the same, and then detected materials are tested, and the signal that collects will be tested twice and is contrasted
The dynamic response and the basic mechanical property parameters of detected materials of detected materials under water under shock.The experiment
Device can truly simulate dynamic response of the different materials to underwater blast wave, compared with traditional live underwater explosion experiment
Have the advantages that to have a wide range of application, it is simple to operate, greatly reduce and test into the case where identical purpose can be reached
This.Meanwhile, moving up and down for sample platform 2-1 can be realized by rotation and lifting bar 2-4, it is achieved thereby that to different size materials
Expect the measurement of the dynamic response under shock under water.
Brief description of the drawings
Fig. 1 is apparatus of the present invention general structure schematic diagram.
Fig. 2 is cistern system structural representation.
Fig. 3 is dynamometry support system structural representation.
Fig. 4 is the structural representation of measuring system.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings.
Embodiment 1
It is a kind of measure material under water under detonation dynamic response experimental provision, the device is by igniting uncovered water tank
Sheet explosive produces approximate underwater explosion impact plane wave in 1-2, and arranges detected materials on sample platform 2-1, so as to
Measure dynamic response of the multiple material under water under detonation.The experimental provision include cistern system 1, dynamometry support system 2,
Reference material known to the unknown detected materials of measuring system 3, mechanical property parameters and mechanical property parameters, the experimental provision with
Traditional live underwater explosion experiment, which is compared, has simply and easily advantage, is greatly reduced in the situation that can reach identical purpose
Experimental cost, meanwhile, the sample platform 2-1 of device height adjustable enters so as to the structural material to sizes
Row experiment.
For the vacancy and the limitation of existing related experimental provision quick-fried under water, the present invention of existing underwater explosion experimental provision
Propose it is a kind of measure material under water under detonation dynamic response experimental provision, can realize to various structures material water
The measurement and the research of the capability of antidetonance of dynamic response under lower detonation.
The cistern system 1 and the concentric arrangement of the vertical direction of dynamometry support system 2, dynamometry support system 2 are arranged in nothing
Immediately below lid water tank 1-2, the base support 2-10 and tank bracket 1-4 of dynamometry support system 2 are arranged in same level workbench
On.The experimental provision is tested to reference material first in experiment, the aluminium of reference material mechanical property parameters known to
Alloy material, and the size of reference material and detected materials is consistent, and then treats material and is tested, and passes through and measures elasticity
Sensing element 3-2 transmitted wave signal, will twice experimental result contrasted knowable to detected materials under water explosion wave make
The basic mechanical performance parameter of dynamic response and detected materials under.
The cistern system 1 includes hanger 1-1, uncovered water tank 1-2, water tank supporting plate 1-3, tank bracket 1-4.Uncovered water
Case 1-2 is bolted on water tank supporting plate 1-3, and water tank supporting plate 1-3 has identical with uncovered water tank 1-2 bottom plates
The circular hole of size, reference material or detected materials sequentially pass through two circular holes and are placed on the center of sample platform 2-1 upper surfaces
Position, water tank supporting plate 1-3 is fixedly connected by bolt with tank bracket 1-4.
The dynamometry support system 2 includes sample platform 2-1, waterproof cap holder 2-2, tarpaulin 2-3, elevating lever 2-4, bullet
Property sensing element connecting seat 2-5, nut spanner disk 2-6, lifting nut 2-7, base sleeve 2-8, key 2-9, base support 2-10.
Four elastic sensing element 3-2 have been evenly arranged between sample platform 2-1 and elastic sensing element connecting seat 2-5, have passed through bolt
Elastic sensing element 3-2 is fixed between sample platform 2-1 and elastic sensing element connecting seat 2-5, in elastic sensing element
It is bolted on connecting seat 2-5 and is mounted with waterproof cap holder 2-2, for supports tarpaulin 2-3.Elevating lever 2-4 upper ends with
Elastic sensing element connecting seat 2-5 is fixedly connected centrally through bolt, and lower end is arranged in base sleeve 2-8, in base sleeve
2-8 upper middles position has been symmetrically arranged the lifting nut 2-7 of 2 adjustable up-down bar height, and lifting nut 2-7's is outer
Be symmetrically arranged 2 nut spanner disk 2-6 on surface, and axisymmetricly distribution 3 are arranged on base sleeve 2-8 outer surfaces
Individual base support 2-10.
The present invention is also comprising some such features：
1. equally distributed 6 hanger 1-1 are welded with the outer wall of uncovered water tank 1-2 sustained heights, for hanging explosive,
Explosive used is sheet explosive in experiment.
2. uncovered water tank 1-2 bottom plates have 2 circular holes of same diameter with water tank supporting plate 1-3 centers respectively, material is passed through
Two circular holes are placed on sample platform 2-1 upper surface, and upper surface and the uncovered water tank 1-2 bottom plates of material are located at same water
On horizontal line.
3. elastic sensing element connecting seat 2-5 is provided with the elevating lever 2-4 containing screw thread, can be real by rotation and lifting nut 2-7
Existing elevating lever 2-7 lift adjustment, so as to change sample platform 2-1 and uncovered water tank 1-2 bottom plates difference in height, is achieved in surveying
Measure the dynamic response of sizes materials under water under shock.
4. the tank bracket 1-4 that water tank supporting plate 1-3 arranged beneaths three are axisymmetricly distributed, dynamometry support system 1
The underface of uncovered water tank 1-2 centers is arranged in, elevating lever 2-4 is arranged in base sleeve 2-8, base sleeve 2-8 quilts
The base support 2-10 being axisymmetricly distributed is fixed, and base support 2-10 and tank bracket 1-4 is each attached on level ground.
5. arranging tarpaulin 2-3 on the outside of the elastic sensing element 3-2 below sample platform 2-1, experiment can be prevented
The water flowed down during progress in water tank is impacted to measurement.
6. two grooves of setting that elevating lever 2-4 lower semisections are symmetric, and in base sleeve 2-8 lower middles position
The setting being symmetric two and hole of the groove with width, by two circular cavities installation key 2-9 limit elevating lever
2-4 circumferential movement, makes elevating lever 2-4 vertically to move up and down.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention has significantly compared to other existing related inventions
Technological improvement and lifting.Apparatus of the present invention mainly include cistern system 1, dynamometry support system 2 and measuring system 3.The experiment is filled
Put and reference material is tested first in experiment, the aluminum alloy materials of reference material mechanical property parameters known to, and
The size of reference coupon and detected materials is consistent, and then detected materials are tested, by measuring elastic sensing element
Transmitted wave signal on 3-2, by experimental result twice contrasted knowable to detected materials under water under shock
Dynamic response and basic mechanical property parameters.The device is simple to operate, performance stable, applicability is wide, it is possible to achieve a variety of
The dynamic response performance analysis of underwater explosion percussion under structural material, many dimensional conditions.
Referring to accompanying drawing 2-4, a kind of measurement material under water under detonation dynamic response experimental provision, including water tank system
Aluminium known to the unknown detected materials of system 1, dynamometry support system 2, measuring system 3, mechanical property parameters and mechanical property parameters
Reference alloy material, wherein cistern system 1 include hanger 1-1, uncovered water tank 1-2, water tank supporting plate 1-3, tank bracket 1-4；
Dynamometry support system 2 includes sample platform 2-1, waterproof cap holder 2-2, tarpaulin 2-3, elevating lever 2-4, elastic sensing element and connected
Joint chair 2-5, nut spanner disk 2-6, lifting nut 2-7, base sleeve 2-8, key 2-9, base support 2-10；Measuring system 3 is wrapped
Foil gauge 3-1, elastic sensing element 3-2 and deformeter 3-3 are included,
The specific experiment step of the device is as follows：
(1) device is not when working, without water in uncovered water tank 1-2, and elevating lever 2-4 is in its extreme lower position.Experiment
Before, the upper and lower surface first to aluminium alloy reference material and detected materials carries out smooth processing and to the size progress of two kinds of materials
Measurement, the selection identical two kinds of materials of size are tested, and aluminium alloy reference material smooth to upper and lower surface first
Tested.
(2) when testing, aluminium alloy reference material is placed on to sample platform 2-1 center, rotation nut spanner disk 2-6
The height of aluminium alloy reference material is adjusted, until at the lower surface of aluminium alloy reference material upper surface and uncovered water tank 1-2 bottom plates
In sustained height, then circular hole is separated with aluminium alloy reference material using waterproofing membrane, prevents that water flows from circular hole before testing
Go out.
(3) water filling into uncovered water tank 1-2, sheet explosive, adjustment suspension line length, it is ensured that thin are hung by hanger 1-1
Piece explosive horizontal center be in water in.
(4) measuring system 3 is opened, prepares to collect data.
(5) sheet explosive is ignited by lead and collects experimental data.
(6) to detected materials repetitive process process (2)-(5), the specification that the sheet explosive of use is tested twice is consistent, leads to
Cross and contrasted test data twice, obtain dynamic response of the detected materials under water under shock and treat
Measure and monitor the growth of standing timber the mechanical property parameters of material.
(7) measuring system 3 is closed, the remaining water in experimental provision is removed.
Embodiment 2
As Figure 1-4, be it is a kind of measure material under water under detonation dynamic response experimental provision, including water tank
Known to the unknown detected materials of system 1, dynamometry support system 2, measuring system 3, mechanical property parameters and mechanical property parameters
Reference material, wherein detected materials are that length, width and height are identical with the size of reference material, the upper following table of detected materials and reference material
Pass through smooth processing before the experiment of face.
As shown in Fig. 2 being cistern system structural representation, cistern system 1 includes hanger 1-1, uncovered water tank 1-2, water tank
Supporting plate 1-3, tank bracket 1-4.The centre position of described uncovered water tank 1-2 bottom plate and water tank supporting plate 1-3 has respectively
The diameter of one circular hole, detected materials and reference material is less than the diameter of circular hole, and detected materials or reference material pass through two circles
Hole is placed on the center position of sample platform 2-1 upper surfaces；Uncovered water tank 1-2, water tank supporting plate 1-3, tank bracket 1-4 from
The tank bracket 1-4 that top to bottm is bolted to connection and water tank supporting plate 1-3 arranged beneaths 6 are axisymmetricly distributed,
Dynamometry support system 2 is located at the underface of cistern system 1,；One is placed in the middle of circular hole and detected materials or reference material with treating
Measure and monitor the growth of standing timber and expect or reference material size identical waterproofing membrane, waterproofing membrane prevents that water flows out from circular hole before testing；Hanger 1-1
In on uncovered water tank 1-2 outer walls, hanger 1-1 is in sustained height and hanger 1-1 size shape is identical, hanger 1-1's
Quantity is at least 3, and the quantity of suspension line is equal to hanger 1-1 quantity, and the connection hanger 1-1 one end connection of suspension line one end is fried
Medicine, allows explosive to lie in a horizontal plane at a certain position inside uncovered water tank 1-2 by adjusting the length of suspension line；Explosive is thin slice
Explosive, sheet explosive can apply different size of load to large complicated shape and structure, be the explosive being most widely used at present
One of, sheet explosive thickness used is 0.4 millimeter in the present embodiment, the Detasheet explosives in the model U.S., water borehole blasting punching
The empirical equation for hitting the propagation of ripple is：
Wherein, κ is experiment coefficient, and Q be explosive loading amount (unit for kilogram), R be according to quick-fried gains in depth of comprehension apart from (unit is rice),
α is decline of pressure coefficient.
The corresponding underwater demolition parameters of Parameter are respectively P(t)、I(t)And Ew, and be for different explosives, κ and α
Different constants.
In initial peak pressure value PmAfter arrival, the water blaster pressure that water borehole blasting is produced is with time exponentially attenuation law
Drop, formula is：
P(t)=Pme-t/θ
Wherein, P(t)Shock wave pressure (N/cm when being time t2), PmIt is initial peak pressure value (N/cm2), θ is die-away time
Constant, is defined as from PmDecay to PmTime (ms) required for/e.
Momentum in shock wave wave surface unit area is specific impulse I(t), it is integration of the shock wave pressure to the time.Work as knot
During much bigger than blasting vibration cycle natural vibration period of structure thing, momentum is exactly the important indicator for weighing water blaster dither effect.
According to definition, before the t moments after shock head reaches set point, the momentum sent in its unit area is determined by following formula：
Strictly speaking, superpressure should be used in this equation, but in most practical cases, P(t)It is very big, so this
Difference is inessential.
Energy-flux density EwIt is the energy in shock wave wave surface unit area, is represented by：
As shown in figure 3, being dynamometry support system structural representation, dynamometry support system 2 includes sample platform 2-1, waterproof
Cap holder 2-2, tarpaulin 2-3, elevating lever 2-4, elastic sensing element connecting seat 2-5, nut spanner disk 2-6, lifting nut 2-
7th, base sleeve 2-8, key 2-9, base support 2-10.Described elevating lever 2-4 upper end passes through bolt and elastic sensing element
Connecting seat 2-5 is connected, and elevating lever 2-4 lower ends are connected by bolt with base sleeve 2-8, and elevating lever 2-4 lower middles position is in
It is symmetrical be provided with two grooves, be symmetric in base sleeve 2-8 lower middles position have two respectively with 2 bar ditch
Groove is with the hole of width, and two size and shape identical key 2-9 are respectively in two circular cavities, and key 2-9 limits elevating lever
2-4 circumferential movement, makes elevating lever 2-4 vertically to move up and down；It is left in base sleeve 2-8 upper middles position
The right side has been arranged symmetrically 2 lifting nut 2-7 for being used to adjust elevating lever 2-4 height, is realized by rotation and lifting nut 2-7
The regulation up and down of elevating lever 2-4 positions, so as to change the height between sample platform 2-1 and uncovered water tank 1-2 plate upper surfaces
Difference, is in same horizontal line by adjusting the upper surface of height official post detected materials with the upper surface of uncovered water tank 1-2 bottom plates,
It is achieved thereby that various sizes of detected materials under water Blasting shock wave effect under dynamic response measurement；Elastic sensitive member
Tarpaulin 2-3 is mounted with part 3-2 outer surface, prevents the water flowed down during experiment in water tank from producing influence to measurement result；Rise
There is nut spanner disk 2-6 drop nut 2-7 outer surface；Base sleeve 2-8 outer surfaces are 3 base supports being axisymmetricly distributed
2-10, base support 2-10 are used for the stabilization for ensureing whole dynamometry support system 2.
As shown in figure 4, being measuring system structural representation, measuring system 3 includes foil gauge 1, elastic sensing element 2 and answered
Become instrument 3.The elastic sensing element 2 used in experiment is pillar elastic sensing element；Foil gauge 1 is the production of Co., Ltd of Sigma
Model BSF120-3AA-T a foil gauge 1, the axial direction of the direction of foil gauge 1 along elastic sensing element 2 should
Become piece 1 to be secured on the outer surface of elastic sensing element 2；The deformeter 3 used in experiment is the production of Co., Ltd of Sigma
ASMD3-16 dynamic resistance strain instruments, the connected mode of foil gauge 1 and deformeter 3 connected using lead, and deformeter 3 has letter
The function that number enhanced processing, data record, data waveform are shown, is surveyed to reference material and detected materials respectively in experiment
Amount, by contrast experimental data twice can obtain dynamic response of the detected materials under water under shock and
The mechanical property parameters of detected materials.
The specific experiment step of the device is as follows：
(1) device is not when working, without water in uncovered water tank 1-2, and elevating lever 2-4 is in its extreme lower position.Experiment
Before, the upper and lower surface first to reference material and detected materials carries out smooth processing and the size of two kinds of materials is measured,
The selection identical two kinds of materials of size are tested, and reference material smooth to upper and lower surface first is tested.
(2) when testing, reference material is placed on to sample platform 2-1 center, rotation nut spanner disk 2-6 adjustment ginsengs
The height of material is examined, until reference material upper surface and the lower surface of uncovered water tank 1-2 bottom plates are in sustained height, is then utilized
Waterproofing membrane separates circular hole with reference material, prevents that water flows out from circular hole before testing.
(3) water filling into uncovered water tank 1-2, sheet explosive, adjustment suspension line length, it is ensured that thin are hung using hanger 1-1
Piece explosive horizontal center be in water in.
(4) measuring system 3 is opened, prepares to collect data.
(5) sheet explosive is ignited by lead and collects experimental data.
(6) to detected materials repetitive process process (2)-(5), the specification that the sheet explosive of use is tested twice is consistent, leads to
Cross and contrasted experimental data twice, obtain dynamic response of the detected materials under water under shock and treat
Measure and monitor the growth of standing timber the mechanical property parameters of material.
(7) measuring system 3 is closed, the remaining water in experimental provision is removed.
Here it must be noted that technological means disclosed in this invention is not limited only to the skill disclosed in above-mentioned embodiment
Art means, in addition to by the constituted technical scheme of above technical characteristic any combination.
Claims (9)
1. it is a kind of measure material under water under detonation dynamic response experimental provision, including cistern system (1), dynamometry base
Reference material known to the unknown detected materials of system (2), measuring system (3), mechanical property parameters and mechanical property parameters, its
Middle cistern system (1) includes hanger (1-1), uncovered water tank (1-2), water tank supporting plate (1-3), tank bracket (1-4)；Dynamometry bottom
Base system (2) includes the sensitive member of sample platform (2-1), waterproof cap holder (2-2), tarpaulin (2-3), elevating lever (2-4), elasticity
Part connecting seat (2-5), nut spanner disk (2-6), lifting nut (2-7), base sleeve (2-8), key (2-9), base support (2-
10)；Measuring system (3) includes foil gauge (3-1), elastic sensing element (3-2) and deformeter (3-3), it is characterised in that：It is described
Detected materials and reference material length, width and height it is all identical, detected materials or reference material are placed on sample platform through circular hole
The center of (2-1)；Equally spaced pacify successively between sample platform (2-1) and four elastic sensing element connecting seats (2-5)
Fill and post foil gauge (3-1) on 4 elastic sensing elements (3-2), the outer surface of elastic sensing element (3-2)；Elevating lever (2-4)
Outer surface there is helicitic texture, the upper surface of detected materials or reference material and the lower surface position of uncovered water tank (1-2) bottom plate
In same level.
2. described a kind of measurement material according to claim 1 under water under detonation dynamic response experiment dress
Put, it is characterised in that：Described uncovered water tank (1-2), water tank supporting plate (1-3), detected materials or reference material, sample platform
(2-1), tarpaulin (2-3), waterproof cap holder (2-2), elevating lever (2-4), elastic sensing element (3-2), base sleeve (2-
8), key (2-9), base support (2-10) are sequentially placed from top to bottom and center of gravity is on same axis.
3. described a kind of measurement material according to claim 1 under water under detonation dynamic response experiment dress
Put, it is characterised in that：Described detected materials or the mechanical property of reference material refer to that material is showed under the effect of various load
Resistance out, including intensity, plasticity, toughness and intensity.
4. described a kind of measurement material according to claim 1 under water under detonation dynamic response experiment dress
Put, it is characterised in that：The bottom plate of described uncovered water tank (1-2) has one respectively with the middle position of water tank supporting plate (1-3)
Individual circular hole, two circular hole size shapes are identical, and the diameter of detected materials or reference material is less than the diameter of circular hole.
5. described a kind of measurement material according to claim 1 under water under detonation dynamic response experiment dress
Put, it is characterised in that：Described hanger (1-1) is placed on uncovered water tank (1-2) outer wall, and hanger (1-1) is located at sustained height
And the quantity of hanger (1-1) is at least 3.
6. it is according to claim 5 it is a kind of measure material under water under detonation dynamic response experimental provision, it is special
Levy and be：Described hanger (1-1) is connected by suspension line with explosive, and explosive is sheet explosive, the placement of explosive horizontal center
At the internal a certain position of uncovered water tank (1-2), explosive underwater penetration is more than the height of water tank supporting plate (1-3) and less than nothing
The size and quality all same of the height of lid water tank (1-2), every time experiment explosive used.
7. described a kind of measurement material according to claim 1 under water under detonation dynamic response experiment dress
Put, it is characterised in that：Tarpaulin (2-3) is mounted with the outside of described elastic sensing element (3-2).
8. described a kind of measurement material according to claim 1 under water under detonation dynamic response experiment dress
Put, it is characterised in that：The lower semisection of described elevating lever (2-4) has two grooves, two groove intervals centered on axis
180 degree, two are located at base sleeve (2-8) lower middle position respectively with groove with the hole of width, and two circular cavities are with axis
180 degree is spaced centered on line, two size and shape identical keys (2-9) are located in two circular cavities respectively.
9. a kind of measurement material according to described in claim 1 and 4 under water under detonation dynamic response experiment
Device, it is characterised in that：Placed in the middle of the circular hole and detected materials or reference material in described uncovered water tank (1-2) bottom plate center
One and detected materials or reference material size identical waterproofing membrane.
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