CN110398427A - Strain rate Compression and Expansion universal test device and method in hydropneumatic - Google Patents
Strain rate Compression and Expansion universal test device and method in hydropneumatic Download PDFInfo
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- CN110398427A CN110398427A CN201910829326.8A CN201910829326A CN110398427A CN 110398427 A CN110398427 A CN 110398427A CN 201910829326 A CN201910829326 A CN 201910829326A CN 110398427 A CN110398427 A CN 110398427A
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- 238000012360 testing method Methods 0.000 title claims abstract description 107
- 238000007906 compression Methods 0.000 title claims abstract description 46
- 230000006835 compression Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000007789 gas Substances 0.000 claims abstract description 73
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000011068 loading method Methods 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 239000011888 foil Substances 0.000 claims abstract description 12
- 238000011049 filling Methods 0.000 claims abstract description 8
- 239000011261 inert gas Substances 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 15
- 238000002474 experimental method Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000012669 compression test Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 4
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- 239000000463 material Substances 0.000 abstract description 12
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- 239000007788 liquid Substances 0.000 abstract description 3
- 238000011056 performance test Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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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
- G01N3/02—Details
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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
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
Strain rate Compression and Expansion universal test device and method in hydropneumatic, belong to material dynamic mechanical technical field of performance test, the present invention is to solve the problem of that existing experimental rig is only applicable to high and low strain rate test and not can be carried out stretching under middle strain rate loading condition or compress dynamic stress wave load test.Apparatus of the present invention include test specimen, output rod, foil gauge, cylinder block, piston, piston rod, input lever, gas circuit control unit and water route control unit；Method includes: step 1: filling water to water chamber；Step 2: being full of nitrogen to gas chamber；Step 3, by flow control valve control liquid flow control piston movement velocity, control the rate of deformation of test specimen, apply the amplitude size of stress wave by the pressure control of gas, is stretched under strain rate loading condition in realization or compression dynamic stress wave loads；Step 4: during being continuously applied load, recording strain history and stress loading data, and construct stress-strain diagram.
Description
Technical field
The invention belongs to material dynamic mechanical technical field of performance test, are related to a kind of middle strain rate stretching/compressing test
Device, suitable under the conditions of strain rate research material dynamic tensile or Compressive Mechanical Properties, obtain in material and answer
Variability dynamic tensile or Compressive mechanical characters.
Background technique
Car crass, foreign object all refer to research material in middle strain rate to the shock of aircraft and high-speed rail, intermetallic composite coating etc.
Dynamic mechanical response characteristic under loading environment.
The dynamic mechanical of research rate sensitive material needs a variety of ways and means, such as quasi-static tensile, compression and torsion
Turn test use traditional servo testing machine, be widely used in research material low strain dynamic rate mechanical behavior response characteristic (generation
Strain rate is 10-3~10-1S-1)；And it is extensive to separate Hopkinson pole technology (Split Hopkinson Bar Technique)
For the high strain-rate mechanical behavior response characteristic of research material, the strain rate that Hopkinson pull rod or compression bar generally generate is
From 200~103S-1.Consider 1~200S of low strain dynamic rate in material-1The data in literature of deformational behavior is very limited.This is main
It is because the stretching of middle strain rate or compression experiment difficulty are bigger, the strain rate than servo Compression and Expansion testing machine is big, and
It is smaller than the strain rate that Hopkinson pull rod or compression bar obtain.In traditional servo-hydraulic testing machine or other quickly tests
It will cause stress wave signal oscillation when increasing loading speed on machine.And the filtering vibrated can reduce the hair of precision and important phenomenon
It is existing.The still not fairly perfect equipment of middle strain rate Mechanics Performance Testing for material.If in pneumatic and mechanical load machine
The middle strain rate method of testing materials researched and developed on the basis of structure, is substantially carried out the compression test of material.In order to obtain one it is considerable
Maximum strain, required stress wave impulse is very long, reaches between 1ms to 10ms, loads skill according to traditional Hopkinson bar
Art, not only bullet length is too long, may be in several meters of length, and the length of bar needed for incidence wave to be separated and back wave
At least twice of bullet length, the length of such whole device is just up to more than ten meters and tens meters.So using it is traditional suddenly
The test of strain rate load is unpractical in the progress of Pu Jinsen lever apparatus.Therefore research and development are suitable under middle strain rate loading condition
The experimental rig and method of material dynamic mechanical performance study are very necessary and important.
Summary of the invention
The invention aims to solving existing experimental rig to be only applicable to the test of high and low strain rate, not can be carried out
The problem of stretching under strain rate loading condition or compressing dynamic stress wave load test, provides strain rate in a kind of hydropneumatic
Compression and Expansion universal test device and method.
Strain rate Compression and Expansion universal test device includes test specimen 1, output rod 2, strain in hydropneumatic of the present invention
Piece 3, cylinder block 27, piston 10, piston rod 15, input lever 4, gas circuit control unit and water route control unit；
The inner cavity of cylinder block 27 is divided into left chamber 6 and right chamber 14 by piston 10, affixed with 10 left side wall of piston
Input lever 4 is pierced by from the left end cap of cylinder block 27, and affixed piston rod 15 is from the right side of cylinder block 27 with 10 right side wall of piston
End cap is pierced by；
The both ends of test specimen 1 paste the input lever 4 of foil gauge 3 with end respectively and output rod 2 is connect；
Output rod 2, input lever 4, piston rod 15, piston 10 and cylinder block 27 are coaxial；
When stretching experiment, left chamber 6 is used as gas chamber, and right chamber 14 is used as water chamber；When compression experiment, left chamber 6 is used as water
Room, right chamber 14 are used as gas chamber；
Water route control unit, for being filled the water to water chamber；
Gas circuit control unit, for being filled with inert gas to gas chamber；It is also used to keep 10 two sides of piston in gas replenishment process
Pressure balance；It is also used to realize the release to gas gas pressure inside in stretching or compression experiment；Be also used to stretch or
Emptied of water indoor gas when realizing the water-filling in water chamber when person's compression experiment.
Preferably, gas circuit control unit is also used to after the end of the test empty the inert gas in gas chamber；Water route control
Unit is also used to after the test empty the water in water chamber under the assistance of gas circuit control unit.
It preferably, further include laser displacement sensor 28 and high dynamic strain indicator；
Input lever 4 is exposed at the setting of the end outside cylinder block 27 fixed stop, is monitored by laser displacement sensor 28
Fixed stop measures the strain history of test specimen 1 to realize；
The foil gauge 3 at 1 both ends of test specimen accesses high dynamic strain indicator simultaneously, realizes measurement test specimen 1 in strain history
The stress loading data of two sides.
It preferably, further include 5, No. two O-rings 16 of No.1 O-ring and No. three O-rings, input lever 4 and cylinder block 27 are left
End face contact position sealing is realized by No.1 O-ring 5；Piston rod 15 is O-shaped by No. two with 27 right side contact position of cylinder block
Circle 16 realizes sealing；The inner wall of piston 10 and cylinder block 27 is realized by No. three O-rings of twice and is sealed.
Preferably, gas circuit control unit includes 23, No. four inert gas bottle 26, high-pressure air source distributor high pressure hand-operated cut-offs
The high pressure hand-operated stop valve 22 of high pressure hand-operated stop valve 21, seven of valve 19, six and No. nine high pressure hand-operated stop valves 25；Inert gas
The gas outlet of bottle 26 is connected to by No. nine high pressure hand-operated stop valves 25 with the air source inlet of high-pressure air source distributor 23；
High-pressure air source distributor 23 is in communication with the outside by No. seven high pressure hand-operated stop valves 22；
High-pressure air source distributor 23 is connected to by No. six high pressure hand-operated stop valves 21 with left chamber 6；High-pressure air source distributor
23 are connected to by No. four high pressure hand-operated stop valves 19 with right chamber 14；
No. four high pressure hand-operated stop valves 19 and No. six high pressure hand-operated stop valves 21 are arranged on 27 top of cylinder block.
Preferably, gas circuit control unit further includes No. eight high pressure hand-operated stop valves 24 and air gauge, and air gauge is for monitoring
23 air pressure inside of high-pressure air source distributor is provided with No. eight high pressure hands on the pipeline between air gauge and high-pressure air source distributor 23
Dynamic shut-off valve 24.
Preferably, inert gas bottle 26 is nitrogen gas bottle.
Preferably, water route control unit includes 9, No. two high pressure hand-operated section of water funnel 18, No.1 high pressure hand-operated stop valve
The only high pressure hand-operated stop valve 17, five of valve 11, three high pressure hand-operated stop valve 20, left chamber's flow control valve 8, right chamber flow
Control valve 13, left chamber's High Pressure Fast Open solenoid valve 7 and right chamber High Pressure Fast Open solenoid valve 12；
Water funnel 18 is connected to by No. five high pressure hand-operated stop valves 20 with left chamber 6；Water funnel 18 passes through No. three height
Pressure hand stop valve 17 is connected to right chamber 14；No. three high pressure hand-operated stop valves 17 and No. five settings of high pressure hand-operated stop valve 20 exist
27 top of cylinder block；
6 lower part of left chamber is in communication with the outside by No.1 high pressure hand-operated stop valve 9；It is flowed by left chamber 6 lower part of left chamber
Control valve 8 and left chamber's High Pressure Fast Open solenoid valve 7 are in communication with the outside；
14 lower part of right chamber is in communication with the outside by No. two high pressure hand-operated stop valves 11；14 lower part of right chamber passes through right chamber
Flow control valve 13 and right chamber High Pressure Fast Open solenoid valve 12 are in communication with the outside.
The present invention also provides strain rate stretching test methods in hydropneumatic, method includes the following steps:
Step A1: right chamber 14 as water chamber and is filled into water: opening No. four high pressure hand-operated stop valves 19 and No. seven high pressures
Hand stop valve 22 opens No. three high pressure hand-operated stop valves 17, injects water into right chamber 14 by funnel 18, the gas of the inside is logical
It crosses No. four high pressure hand-operated stop valves 19, high-pressure air source distributor 23 and No. seven high pressure hand-operated stop valves 22 and right chamber 14 is discharged；
Step A2: left chamber 6 is full of nitrogen as gas chamber: closing No. seven high pressure hand-operated stop valves 22, opens No. six height
Hand stop valve 21 and No. eight high pressure hand-operated stop valves 24 are pressed, the switch of inert gas bottle 26 is opened, opening nine is high pressure hand-operated
Shut-off valve 25, to being filled with nitrogen inside chamber 6 to the left while the pressure balance for guaranteeing left chamber 6 and right chamber 14, when being filled with
Gas pressure when reaching the pressure value of test demand, close 19, No. six high pressure hand-operated stop valves of No. four high pressure hand-operated stop valves
21, No. eight high pressure hand-operated stop valves 24 and No. nine high pressure hand-operated stop valves 25；
Step A3: opening right chamber High Pressure Fast Open solenoid valve 12, and the water of 14 the inside of right chamber is passed through the control of right chamber flow
Valve 13 processed is by setting flow velocity discharge, and in the moment for opening valve, the water pressure in right chamber 14 is zero, causes piston 10 in this wink
Between be loaded transient state load and conduct be applied on test specimen 1, right chamber 14 drain during, piston 10 move right and will
It is continuously applied in load to test specimen 1, test specimen 1 is made persistently to be stretched, until by right chamber High Pressure Fast Open solenoid valve 12 after 3~10 seconds
Until closing；
Step A4: during being continuously applied load, the strain time of test specimen 1 is measured using laser displacement sensor 28
Course measures the stress loading data of 1 two sides of test specimen in the strain history using high dynamic strain indicator, according to two groups of numbers
According to building tensile stress strain curve.
The present invention also provides strain rate compression test methods in hydropneumatic, method includes the following steps:
Step B1: left chamber 6 as water chamber and is filled into water: opening No. six high pressure hand-operated stop valves 21 and No. seven high pressure hands
Dynamic shut-off valve 22, opens No. five high pressure hand-operated stop valves 20, injects water into left chamber 6 by funnel 18, the gas of the inside passes through
Right chamber 14 is discharged in No. six high pressure hand-operated stop valves 21, high-pressure air source distributor 23 and No. seven high pressure hand-operated stop valves 22；
Step B2: right chamber 14 is full of nitrogen as gas chamber: closing No. seven high pressure hand-operated stop valves 22, opens No. four height
Hand stop valve 19 and No. eight high pressure hand-operated stop valves 24 are pressed, the switch of inert gas bottle 26 is opened, opening nine is high pressure hand-operated
Shut-off valve 25, to being filled with nitrogen inside chamber 14 to the right while the pressure balance for guaranteeing left chamber 6 and right chamber 14, when being filled with
Gas pressure when reaching the pressure value of test demand, close 19, No. six high pressure hand-operated stop valves of No. four high pressure hand-operated stop valves
21, No. eight high pressure hand-operated stop valves 24 and No. nine high pressure hand-operated stop valves 25；
Step B3: opening left chamber's High Pressure Fast Open solenoid valve 7, and the water of 6 the inside of left chamber is passed through left chamber's flow control
Valve 8 is by setting flow velocity discharge, and in the moment for opening valve, the water pressure in left chamber 6 is zero, causes piston 10 in this moment quilt
It loads transient state load and conducts and be applied on test specimen 1, during left chamber 6 drains, piston 10 is moved to the left and will continue
Apply in load to test specimen 1, makes test specimen 1 continue to be compressed, until closing left chamber's High Pressure Fast Open solenoid valve 7 after 3~10 seconds
Until；
Step B4: during being continuously applied load, the strain time of test specimen 1 is measured using laser displacement sensor 28
Course measures the stress loading data of 1 two sides of test specimen in the strain history using high dynamic strain indicator, according to two groups of numbers
According to building compression stress strain curve.
Beneficial effects of the present invention: the present invention uses hydropneumatic mode, and the stream of liquid is controlled by flow control valve
The movement velocity of amount control piston, that is, the rate of deformation of control test specimen, and controlled by the pressure of gas and apply stress wave
Amplitude size, stretches under strain rate loading condition in realization or compression dynamic stress wave load.Loading device is easily controllable to answer
The amplitude and strain rate of Reeb have good repeatability, can be continuously adjusted the load wave of strain rate in the difference needed for generating
Shape.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of strain rate Compression and Expansion universal test device in hydropneumatic of the present invention, this figure
For tension test；
Fig. 2 is the structural schematic diagram of strain rate Compression and Expansion universal test device in hydropneumatic of the present invention, this figure
For compression test.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1 and Fig. 2, strain rate Compression and Expansion is logical in hydropneumatic
With experimental rig, which is characterized in that including test specimen 1, output rod 2, foil gauge 3, cylinder block 27, piston 10, piston rod 15, defeated
Enter bar 4, gas circuit control unit and water route control unit；
The inner cavity of cylinder block 27 is divided into left chamber 6 and right chamber 14 by piston 10, total be with symmetry,
The preferred aluminum alloy material of piston 10, affixed input lever 4 is pierced by from the left end cap of cylinder block 27 with 10 left side wall of piston, with work
The affixed piston rod 15 of 10 right side walls is filled in be pierced by from the right end cap of cylinder block 27；
The foil gauge 3 that the both ends of test specimen 1 are sticked with input lever 4 and 2 end of output rod respectively is affixed；2 left end of output rod with
Extraneous component is fixed, and 2 right end of output rod and 1 left end of test specimen of stretching or compression experiment are coaxially connected or contact；Input lever 4 is left
End is coaxially connected or contact with 1 right end of test specimen, and connects with test specimen 1 or the input lever 4 contacted and 2 end of output rod are respectively sticked
One foil gauge 3, detects stress variation in stretching or implementation of compression.
Output rod 2, input lever 4, piston rod 15, piston 10 and cylinder block 27 are coaxial；The left end of piston 10 and input lever 4
Coaxially through threaded connection, and the right end of piston 10 and piston rod 15 are coaxially through threaded connection, in this way guarantee 10 two sides of piston
Pressure it is identical, avoid test before to test specimen apply load effect.
When stretching experiment, left chamber 6 is used as gas chamber, and right chamber 14 is used as water chamber；When compression experiment, left chamber 6 is used as water
Room, right chamber 14 are used as gas chamber；
Water route control unit, for filling the water to water chamber, being also used to after the test will under the assistance of gas circuit control unit
Water emptying in water chamber；
Gas circuit control unit, for being filled with inert gas to gas chamber；It is also used to keep 10 two sides of piston in gas replenishment process
Pressure balance；It is also used to realize the release to gas gas pressure inside in stretching or compression experiment；Be also used to stretch or
Emptied of water indoor gas when realizing the water-filling in water chamber when person's compression experiment, being also used to after the end of the test will be lazy in gas chamber
Property gas emptying；.
Gas circuit control unit includes 23, No. four inert gas bottle 26, high-pressure air source distributor high pressure hand-operated stop valves 19, six
Number 21, No. seven high pressure hand-operated stop valves 22 of high pressure hand-operated stop valve and No. nine high pressure hand-operated stop valves 25；Inert gas bottle 26
Gas outlet is connected to by No. nine high pressure hand-operated stop valves 25 with the air source inlet of high-pressure air source distributor 23；
High-pressure air source distributor 23 is in communication with the outside by No. seven high pressure hand-operated stop valves 22；
High-pressure air source distributor 23 is connected to by No. six high pressure hand-operated stop valves 21 with left chamber 6；High-pressure air source distributor
23 are connected to by No. four high pressure hand-operated stop valves 19 with right chamber 14；
High-pressure air source distributor 23 passes through high pressure hand-operated stop valve (21 and 22 or 19 and 22) in stretching or compression
Realize the release to gas pressure in inert gas room；High-pressure air source distributor 23 is in stretching or compression by high pressure hand-operated
Emptied of water indoor gas when shut-off valve (19 and 22 or 21 and 22) realizes the water-filling in water chamber.
No. four high pressure hand-operated stop valves 19 and No. six high pressure hand-operated stop valves 21 are arranged on 27 top of cylinder block.Pass through height
Pressurized air source distributor 23 and two high pressure hand-operated stop valves (No. four high pressure hand-operated stop valves 19 and No. six high pressure hand-operated stop valves
21) water chamber is connected with inert chamber, to guarantee what water chamber and inert chamber were inflated in experimental rig to inert chamber
Guarantee the pressure balance of 10 two sides of piston in the process.
Further, gas circuit control unit further includes No. eight high pressure hand-operated stop valves 24 and air gauge, and air gauge is for supervising
23 air pressure inside of high-pressure air source distributor is surveyed, is provided with No. eight high pressures on the pipeline between air gauge and high-pressure air source distributor 23
Hand stop valve 24.
Inert gas bottle 26 is nitrogen gas bottle.
Water route control unit include water funnel 18,9, No. two high pressure hand-operated stop valves 11 of No.1 high pressure hand-operated stop valve,
No. three high pressure hand-operated stop valves 17, No. five high pressure hand-operated stop valves 20, left chamber's flow control valve 8, right chamber flow control valves
13, left chamber's High Pressure Fast Open solenoid valve 7 and right chamber High Pressure Fast Open solenoid valve 12；
Water funnel 18 is connected to by No. five high pressure hand-operated stop valves 20 with left chamber 6；Water funnel 18 passes through No. three height
Pressure hand stop valve 17 is connected to right chamber 14；No. three high pressure hand-operated stop valves 17 and No. five settings of high pressure hand-operated stop valve 20 exist
27 top of cylinder block；
6 lower part of left chamber is in communication with the outside by No.1 high pressure hand-operated stop valve 9；It is flowed by left chamber 6 lower part of left chamber
Control valve 8 and left chamber's High Pressure Fast Open solenoid valve 7 are in communication with the outside；
14 lower part of right chamber is in communication with the outside by No. two high pressure hand-operated stop valves 11；14 lower part of right chamber passes through right chamber
Flow control valve 13 and right chamber High Pressure Fast Open solenoid valve 12 are in communication with the outside.
Flow control valve (8,13) and fast open electromagnetic valve (7,12), for realizing the moment row of water in stretching or compression
It puts and flow control；The radial lower end of water chamber and nitrogen chamber be mounted on high pressure hand-operated stop valve (9,11) for stretch or
Remaining water is emptied after person's compression test；In the radial upper end sequential connection high pressure hand-operated stop valve of water chamber and inert chamber
(20 and 17) and funnel 18 are used in stretching or compression toward filling the water inside water chamber.
Specific embodiment 2: further including laser displacement sensor 28 and high dynamic strain indicator；
Input lever 4 is exposed at the setting of the end outside cylinder block 27 fixed stop, is monitored by laser displacement sensor 28
Fixed stop measures the strain history of test specimen 1 to realize；
The foil gauge 3 at 1 both ends of test specimen accesses high dynamic strain indicator simultaneously, realizes measurement test specimen 1 in strain history
The stress loading data of two sides.
The strain history of measurement test specimen 1 can also use following two technological means:
Foil gauge is pasted on test specimen 1, the strain history of test specimen is measured by foil gauge.
Or speckle is sprayed on test specimen 1, pass through the deformation of test specimen in the stretching of digital speckle DIC technical monitoring or compression process
To determine strain history.
Specific embodiment 3: further including 5, No. two O-rings 16 of No.1 O-ring and No. three O-rings, input lever 4 and cylinder
27 left side contact position of cylinder body sealing is realized by No.1 O-ring 5；Piston rod 15 passes through with 27 right side contact position of cylinder block
No. two O-rings 16 realize sealing；The inner wall of piston 10 and cylinder block 27 is realized by No. three O-rings of twice and is sealed.
Specific embodiment 4: embodiment is described with reference to Fig. 1, strain rate stretching test method is based in hydropneumatic
Strain rate Compression and Expansion universal test device is realized in hydropneumatic described in embodiment three, method includes the following steps:
Preparation: test specimen 1 is connected between input lever 4 and output rod 2, and the area of section of 10 two sides of piston is identical,
The load of effect is also identical, can effectively avoid the influence for applying load effect when water-filling aerating to test specimen；Own when original state
Valve is all in closed state.
Step A1: right chamber 14 as water chamber and is filled into water: opening No. four high pressure hand-operated stop valves 19 and No. seven high pressures
Hand stop valve 22 opens No. three high pressure hand-operated stop valves 17, injects water into right chamber 14 by funnel 18, the gas of the inside is logical
It crosses No. four high pressure hand-operated stop valves 19, high-pressure air source distributor 23 and No. seven high pressure hand-operated stop valves 22 and right chamber 14 is discharged；
Step A2: left chamber 6 is full of nitrogen as gas chamber: closing No. seven high pressure hand-operated stop valves 22, opens No. six height
Hand stop valve 21 and No. eight high pressure hand-operated stop valves 24 are pressed, the switch of inert gas bottle 26 is opened, opening nine is high pressure hand-operated
Shut-off valve 25, to being filled with nitrogen inside chamber 6 to the left while the pressure balance for guaranteeing left chamber 6 and right chamber 14, when being filled with
Gas pressure when reaching the pressure value of test demand, close 19, No. six high pressure hand-operated stop valves of No. four high pressure hand-operated stop valves
21, No. eight high pressure hand-operated stop valves 24 and No. nine high pressure hand-operated stop valves 25；
Step A3: opening right chamber High Pressure Fast Open solenoid valve 12, and the water of 14 the inside of right chamber is passed through the control of right chamber flow
Valve 13 processed is by setting flow velocity discharge, and in the moment for opening valve, the water pressure in right chamber 14 is zero, causes piston 10 in this wink
Between be loaded transient state load and conduct be applied on test specimen 1, right chamber 14 drain during, piston 10 move right and will
It is continuously applied in load to test specimen 1, test specimen 1 is made persistently to be stretched, until by right chamber High Pressure Fast Open solenoid valve 12 after 3~10 seconds
Until closing；
The movement speed for the uninterrupted control piston 10 that right chamber flow control valve 13 is set, that is, control load pair
The load time of test specimen 1.The movement velocity of the flow control piston 10 of liquid is controlled by right chamber flow control valve 13, also
It is to control the rate of deformation of test specimen 1, and the amplitude size for applying stress wave is controlled by the pressure of gas, strain rate load in realization
Under the conditions of stretch dynamic stress wave load.
Step A4: during being continuously applied load, the strain time of test specimen 1 is measured using laser displacement sensor 28
Course measures the stress loading data of 1 two sides of test specimen in the strain history using high dynamic strain indicator, according to two groups of numbers
According to building tensile stress strain curve.
It further includes steps of
Step A5: opening No. six high pressure hand-operated stop valves 21 and No. seven high pressure hand-operated stop valves 22, will be in inert gas room
Gas discharge, open No. two high pressure hand-operated stop valves 11 and No. four high pressure hand-operated stop valves 19 for the indoor water of water and water be discharged
Tension test is completed in room.
Specific embodiment 6: embodiment is described with reference to Fig. 2, strain rate compression test method is based in hydropneumatic
Strain rate Compression and Expansion universal test device is realized in hydropneumatic described in embodiment three, method includes the following steps:
Step B1: left chamber 6 as water chamber and is filled into water: opening No. six high pressure hand-operated stop valves 21 and No. seven high pressure hands
Dynamic shut-off valve 22, opens No. five high pressure hand-operated stop valves 20, injects water into left chamber 6 by funnel 18, the gas of the inside passes through
Right chamber 14 is discharged in No. six high pressure hand-operated stop valves 21, high-pressure air source distributor 23 and No. seven high pressure hand-operated stop valves 22；
Step B2: right chamber 14 is full of nitrogen as gas chamber: closing No. seven high pressure hand-operated stop valves 22, opens No. four height
Hand stop valve 19 and No. eight high pressure hand-operated stop valves 24 are pressed, the switch of inert gas bottle 26 is opened, opening nine is high pressure hand-operated
Shut-off valve 25, to being filled with nitrogen inside chamber 14 to the right while the pressure balance for guaranteeing left chamber 6 and right chamber 14, when being filled with
Gas pressure when reaching the pressure value of test demand, close 19, No. six high pressure hand-operated stop valves of No. four high pressure hand-operated stop valves
21, No. eight high pressure hand-operated stop valves 24 and No. nine high pressure hand-operated stop valves 25；
Step B3: opening left chamber's High Pressure Fast Open solenoid valve 7, and the water of 6 the inside of left chamber is passed through left chamber's flow control
Valve 8 is by setting flow velocity discharge, and in the moment for opening valve, the water pressure in left chamber 6 is zero, causes piston 10 in this moment quilt
It loads transient state load and conducts and be applied on test specimen 1, during left chamber 6 drains, piston 10 is moved to the left and will continue
Apply in load to test specimen 1, makes test specimen 1 continue to be compressed, until closing left chamber's High Pressure Fast Open solenoid valve 7 after 3~10 seconds
Until；
Step B4: during being continuously applied load, the strain time of test specimen 1 is measured using laser displacement sensor 28
Course measures the stress loading data of 1 two sides of test specimen in the strain history using high dynamic strain indicator, according to two groups of numbers
According to building compression stress strain curve.
It further includes steps of
Step B5: opening No. four high pressure hand-operated stop valves 19 and No. seven high pressure hand-operated stop valves 22, will be in inert gas room
Gas discharge, open No.1 high pressure hand-operated stop valve 9 and No. six high pressure hand-operated stop valves 21 for the indoor water of water and water chamber be discharged,
Complete compression test.
Although disclosed herein embodiment it is as above, the content is only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. strain rate Compression and Expansion universal test device in hydropneumatic, which is characterized in that including test specimen (1), output rod (2),
Foil gauge (3), cylinder block (27), piston (10), piston rod (15), input lever (4), gas circuit control unit and water route control are single
Member；
The inner cavity of cylinder block (27) is divided into left chamber (6) and right chamber (14) by piston (10), with piston (10) left side wall
Affixed input lever (4) is pierced by from the left end cap of cylinder block (27), with piston (10) right side wall affixed piston rod (15) from
The right end cap of cylinder block (27) is pierced by；
The both ends of test specimen (1) paste the input lever (4) of foil gauge (3) with end respectively and output rod (2) is connect；
Output rod (2), input lever (4), piston rod (15), piston (10) and cylinder block (27) are coaxial；
When stretching experiment, left chamber (6) is used as gas chamber, and right chamber (14) is used as water chamber；When compression experiment, left chamber (6) conduct
Water chamber, right chamber (14) are used as gas chamber；
Water route control unit, for being filled the water to water chamber；
Gas circuit control unit, for being filled with inert gas to gas chamber；It is also used to keep the pressure of piston in gas replenishment process (10) two sides
Dynamic balance；It is also used to realize the release to gas gas pressure inside in stretching or compression experiment；Be also used to stretch or
Emptied of water indoor gas when realizing the water-filling in water chamber when compression experiment.
2. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 1, which is characterized in that gas circuit control
Unit processed is also used to after the end of the test empty the inert gas in gas chamber；Water route control unit is also used to exist after the test
The water in water chamber is emptied under the assistance of gas circuit control unit.
3. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 2, which is characterized in that further include
Laser displacement sensor (28) and high dynamic strain indicator；
Input lever (4) is exposed at the external end setting fixed stop of cylinder block (27), is supervised by laser displacement sensor (28)
Fixed stop is surveyed to realize the strain history of measurement test specimen (1)；
The foil gauge (3) at test specimen (1) both ends accesses high dynamic strain indicator simultaneously, realizes measurement test specimen (1) in strain history
The stress loading data of middle two sides.
4. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 3, which is characterized in that further include
No.1 O-ring (5), No. two O-rings (16) and No. three O-rings, input lever (4) pass through with cylinder block (27) left side contact position
No.1 O-ring (5) realizes sealing；Piston rod (15) and cylinder block (27) right side contact position are real by No. two O-rings (16)
Now seal；Piston (10) and the inner wall of cylinder block (27) are realized by No. three O-rings of twice to be sealed.
5. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 3, which is characterized in that gas circuit control
Unit processed includes inert gas bottle (26), high-pressure air source distributor (23), No. four high pressure hand-operated stop valves (19), No. six high pressure hands
Dynamic shut-off valve (21), No. seven high pressure hand-operated stop valves (22) and No. nine high pressure hand-operated stop valves (25)；Inert gas bottle (26)
Gas outlet is connected to by No. nine high pressure hand-operated stop valves (25) with the air source inlet of high-pressure air source distributor (23)；
High-pressure air source distributor (23) is in communication with the outside by No. seven high pressure hand-operated stop valves (22)；
High-pressure air source distributor (23) is connected to by No. six high pressure hand-operated stop valves (21) with left chamber (6)；High-pressure air source distribution
Device (23) is connected to by No. four high pressure hand-operated stop valves (19) with right chamber (14)；
No. four high pressure hand-operated stop valves (19) and No. six high pressure hand-operated stop valves (21) are arranged on cylinder block (27) top.
6. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 5, which is characterized in that gas circuit control
Unit processed further includes No. eight high pressure hand-operated stop valves (24) and air gauge, and air gauge is for monitoring in high-pressure air source distributor (23)
Portion's air pressure is provided with No. eight high pressure hand-operated stop valves (24) on the pipeline between air gauge and high-pressure air source distributor (23).
7. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 5, which is characterized in that indifferent gas
Body bottle (26) is nitrogen gas bottle.
8. strain rate Compression and Expansion universal test device in hydropneumatic according to claim 6, which is characterized in that water route control
Unit processed includes water funnel (18), No.1 high pressure hand-operated stop valve (9), No. two high pressure hand-operated stop valves (11), No. three high pressures
Hand stop valve (17), No. five high pressure hand-operated stop valves (20), left chamber's flow control valve (8), right chamber flow control valve
(13), left chamber's High Pressure Fast Open solenoid valve (7) and right chamber High Pressure Fast Open solenoid valve (12)；
Water funnel (18) is connected to by No. five high pressure hand-operated stop valves (20) with left chamber (6)；Water funnel (18) passes through three
Number high pressure hand-operated stop valve (17) is connected to right chamber (14)；No. three high pressure hand-operated stop valves (17) and No. five high pressure hand-operated cut-offs
Valve (20) is arranged on cylinder block (27) top；
Left chamber (6) lower part is in communication with the outside by No.1 high pressure hand-operated stop valve (9)；Left chamber (6) lower part passes through left chamber
Flow control valve (8) and left chamber's High Pressure Fast Open solenoid valve (7) are in communication with the outside；
Right chamber (14) lower part is in communication with the outside by No. two high pressure hand-operated stop valves (11)；Right chamber (14) lower part passes through right chamber
Room flow control valve (13) and right chamber High Pressure Fast Open solenoid valve (12) are in communication with the outside.
9. strain rate stretching test method in hydropneumatic, which is characterized in that this method is based on hydraulic air according to any one of claims 8
Strain rate Compression and Expansion universal test device is realized in dynamic, method includes the following steps:
Step A1: right chamber (14) as water chamber and are filled into water: opening No. four high pressure hand-operated stop valves (19) and No. seven high pressures
Hand stop valve (22), opens No. three high pressure hand-operated stop valves (17), injects water into right chamber (14) by funnel 18, the inside
Gas passes through No. four high pressure hand-operated stop valves (19), high-pressure air source distributor (23) and No. seven high pressure hand-operated stop valve (22) discharges
Right chamber (14)；
Step A2: left chamber (6) are full of nitrogen as gas chamber: closing No. seven high pressure hand-operated stop valves (22), opens No. six height
Hand stop valve (21) and No. eight high pressure hand-operated stop valves (24) are pressed, the switch of inert gas bottle (26) is opened, opens No. nine height
It presses hand stop valve (25), to chamber (6) the inside is filled to the left while the pressure balance for guaranteeing left chamber (6) and right chamber (14)
Enter nitrogen, when the gas pressure being filled with reaches the pressure value of test demand, closes No. four high pressure hand-operated stop valves (19), No. six
High pressure hand-operated stop valve (21), No. eight high pressure hand-operated stop valves (24) and No. nine high pressure hand-operated stop valves (25)；
Step A3: opening right chamber High Pressure Fast Open solenoid valve (12), and the water inside right chamber (14) is passed through the control of right chamber flow
Valve (13) processed is by setting flow velocity discharge, and in the moment for opening valve, the water pressure in right chamber (14) is zero, causes piston (10)
It is loaded transient state load in this moment and conducts and be applied on test specimen (1), during right chamber (14) drain, piston (10)
It moves right and will be continuously applied in load to test specimen (1), test specimen (1) is made persistently to be stretched, until by right chamber after 3~10 seconds
Until High Pressure Fast Open solenoid valve (12) is closed；
Step A4: during being continuously applied load, the strain time of laser displacement sensor (28) measurement test specimen (1) is utilized
Course measures the stress loading data of test specimen (1) two sides in the strain history using high dynamic strain indicator, according to two groups
Data construct tensile stress strain curve.
10. strain rate compression test method in hydropneumatic, which is characterized in that this method is based on according to any one of claims 8 hydraulic
Strain rate Compression and Expansion universal test device is realized in pneumatic, method includes the following steps:
Step B1: left chamber (6) as water chamber and are filled into water: opening No. six high pressure hand-operated stop valves (21) and No. seven high pressure hands
Dynamic shut-off valve (22), open No. five high pressure hand-operated stop valves (20), inject water into left chamber (6), the gas of the inside by funnel 18
Body is right by No. six high pressure hand-operated stop valves (21), high-pressure air source distributor (23) and No. seven high pressure hand-operated stop valve (22) discharges
Chamber (14)；
Step B2: right chamber (14) are full of nitrogen as gas chamber: closing No. seven high pressure hand-operated stop valves (22), opens No. four height
Hand stop valve (19) and No. eight high pressure hand-operated stop valves (24) are pressed, the switch of inert gas bottle (26) is opened, opens No. nine height
It presses hand stop valve (25), to chamber (14) the inside to the right while the pressure balance for guaranteeing left chamber (6) and right chamber (14)
It is filled with nitrogen, when the gas pressure being filled with reaches the pressure value of test demand, closes No. four high pressure hand-operated stop valves (19), six
Number high pressure hand-operated stop valve (21), No. eight high pressure hand-operated stop valves (24) and No. nine high pressure hand-operated stop valves (25)；
Step B3: opening left chamber's High Pressure Fast Open solenoid valve (7), and the water inside left chamber (6) is passed through left chamber's flow control
Valve (8) is by setting flow velocity discharge, and in the moment for opening valve, the water pressure in left chamber (6) is zero, causes piston (10) herein
Moment is loaded transient state load and conducts and is applied on test specimen (1), and during left chamber (6) drain, piston (10) is to the left
Movement will be simultaneously continuously applied in load to test specimen (1), and test specimen (1) is made to continue to be compressed, until by left chamber's high pressure after 3~10 seconds
Until fast open electromagnetic valve (7) is closed；
Step B4: during being continuously applied load, the strain time of laser displacement sensor (28) measurement test specimen (1) is utilized
Course measures the stress loading data of test specimen (1) two sides in the strain history using high dynamic strain indicator, according to two groups
Data construct compression stress strain curve.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474067A (en) * | 2020-04-15 | 2020-07-31 | 辽宁科技大学 | Hopkinson pressure bar test system for simulating fluid environment |
| CN113640118A (en) * | 2021-08-24 | 2021-11-12 | 哈尔滨工业大学 | Material in-situ dynamic tensile loading test device |
| CN116929929A (en) * | 2023-07-21 | 2023-10-24 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Compression mechanical property test device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH311347A (en) * | 1952-02-28 | 1955-11-30 | Schenck Gmbh Carl | Hydraulic alternating load generator with a working piston that can move in a cylinder, especially for material testing. |
| GB1512614A (en) * | 1975-04-24 | 1978-06-01 | Euratom | Apparatus for testing or measuring deformation and fracture of test-pieces under multiaxial tension or compression |
| CN1080396A (en) * | 1992-06-13 | 1994-01-05 | 北京理工大学 | A kind of high-speed large energy material testing machine |
| CN102135480A (en) * | 2010-12-17 | 2011-07-27 | 北京理工大学 | System and method for performing impact loading on micro test piece and measuring dynamic mechanical property |
| CN105738206A (en) * | 2016-03-29 | 2016-07-06 | 北京工业大学 | Mini-type bidirectional stress loading device |
| CN109406304A (en) * | 2018-12-06 | 2019-03-01 | 南京工业大学 | High-throughput multi-connected compressive creep test device and compressive creep test method |
| CN210401098U (en) * | 2019-09-03 | 2020-04-24 | 哈尔滨市黎明锅炉容器封头有限公司 | Hydraulic and pneumatic stress in motion strain rate stretching and compressing universal test device |
-
2019
- 2019-09-03 CN CN201910829326.8A patent/CN110398427A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH311347A (en) * | 1952-02-28 | 1955-11-30 | Schenck Gmbh Carl | Hydraulic alternating load generator with a working piston that can move in a cylinder, especially for material testing. |
| GB1512614A (en) * | 1975-04-24 | 1978-06-01 | Euratom | Apparatus for testing or measuring deformation and fracture of test-pieces under multiaxial tension or compression |
| CN1080396A (en) * | 1992-06-13 | 1994-01-05 | 北京理工大学 | A kind of high-speed large energy material testing machine |
| CN102135480A (en) * | 2010-12-17 | 2011-07-27 | 北京理工大学 | System and method for performing impact loading on micro test piece and measuring dynamic mechanical property |
| CN105738206A (en) * | 2016-03-29 | 2016-07-06 | 北京工业大学 | Mini-type bidirectional stress loading device |
| CN109406304A (en) * | 2018-12-06 | 2019-03-01 | 南京工业大学 | High-throughput multi-connected compressive creep test device and compressive creep test method |
| CN210401098U (en) * | 2019-09-03 | 2020-04-24 | 哈尔滨市黎明锅炉容器封头有限公司 | Hydraulic and pneumatic stress in motion strain rate stretching and compressing universal test device |
Non-Patent Citations (2)
| Title |
|---|
| V. TARIGOPULA 等: "A hydro-pneumatic machine for intermediate strain-rates: Set-up, tests and numerical simulations", EDP SCIENCES, 15 September 2009 (2009-09-15), pages 381 - 387 * |
| 姜雄文 等: "一种液压气动中应变率拉伸试验机研制及其试验研究", 《实验力学》, 15 December 2022 (2022-12-15), pages 858 - 866 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474067A (en) * | 2020-04-15 | 2020-07-31 | 辽宁科技大学 | Hopkinson pressure bar test system for simulating fluid environment |
| CN111474067B (en) * | 2020-04-15 | 2022-10-25 | 辽宁科技大学 | Hopkinson pressure bar test system for simulating fluid environment |
| CN113640118A (en) * | 2021-08-24 | 2021-11-12 | 哈尔滨工业大学 | Material in-situ dynamic tensile loading test device |
| CN113640118B (en) * | 2021-08-24 | 2024-02-20 | 哈尔滨工业大学 | Material in-situ dynamic tensile loading test device |
| CN116929929A (en) * | 2023-07-21 | 2023-10-24 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Compression mechanical property test device |
| CN116929929B (en) * | 2023-07-21 | 2024-07-05 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Compression mechanical property test device |
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