CN109323937A - A kind of Hopkinson pressure bar damping unit - Google Patents
A kind of Hopkinson pressure bar damping unit Download PDFInfo
- Publication number
- CN109323937A CN109323937A CN201811403279.2A CN201811403279A CN109323937A CN 109323937 A CN109323937 A CN 109323937A CN 201811403279 A CN201811403279 A CN 201811403279A CN 109323937 A CN109323937 A CN 109323937A
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- CN
- China
- Prior art keywords
- piston
- buffer
- buffering
- support
- bearing head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000013016 damping Methods 0.000 title claims abstract description 18
- 230000003139 buffering effect Effects 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a kind of Hopkinson pressure bar damping units, including support, buffering lever apparatus, buffering panel assembly.Support outer surface is fixed with rubber strip, lower part two sides are equipped with flange, on the ground by bolt anchoring, permanent ring magnet is fixed with inside support, interconnected central cavity, upper channel and lower channel are existed simultaneously, buffering lever apparatus includes pressure bearing head, the first buffer spring, metal tie rods and metal chassis, buffering panel assembly includes buffer board, connecting plate, piston and the second buffer spring.When the pressure bearing head of the transmission bar of movement and buffering lever apparatus contacts, entire buffering lever apparatus moves right the air in compress leg central cavity, piston in lower channel is moved to the left under the promotion of compressed air, and buffer board is driven to move downward with certain speed, it is contacted with the first buffer spring on pressure bearing head.Automatically reseting for damping unit is then realized under the action of permanent magnet and the second buffer spring.
Description
Technical field
The present invention relates to dynamic test technical fields, and in particular to a kind of Hopkinson pressure bar damping unit.
Background technique
Split hopkinson press bar experimental rig has become the materials such as study of rocks, concrete, rubber, high polymer at present
One of most important instrument of dynamic mechanical, split hopkinson press bar experimental rig mainly consists of the following parts: hair
The composition such as injection device, bullet, incident bar, transmission bar, damper, high dynamic strain indicator, data processing system, bullet are filled by transmitting
It sets and launches, generate incident pulse in incident bar after hitting incident bar, the test specimen being clipped between incident bar and transmission bar exists
High-speed deformation under the action of incident pulse, and reflected impulse is generated in incident bar, transmitted pulse is propagated in transmission bar, on
It states pulse information to be recorded by the foil gauge and high dynamic strain indicator being attached on incident bar and transmission bar, damping is being tried in device
It is responsible for absorbing extra kinetic energy contained by transmission bar when testing.
Most hopkinson test devices that people use at present use oil damper, and apparatus structure is complicated, and at
This higher, patent No. 201610795186.3 " Hopkinson pressure bar electromagnetic buffer energy absorption device ", including first layer are hit suction
Can system, the second layer be hit absorption systems and third layer is hit absorption systems, by reinforcing circumferential brake to connecting rod
Pressure to increasing friction force, realize the purpose of buffering, but the device when being resetted also due to circumferential brake
Frictional force and be difficult to be resetted.
Summary of the invention
The purpose of the present invention is to solve the buffer unit of existing Hopkinson pressure bar there are the problem of, one kind is provided
Hopkinson pressure bar damping unit, the apparatus structure is simple, at low cost, while the kinetic energy to transmission bar is effectively consumed
It can be realized automatically reseting for buffering lever apparatus.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of Hopkinson pressure bar damping unit, it is characterised in that: including support, buffering lever apparatus, buffering panel assembly；In support
There is interconnected central cavity, upper channel and the lower channel of sealing in portion, buffering lever apparatus includes pressure bearing head, the first buffering elastic
Spring, metal chassis and connection pressure bearing head and metal tie rods, metal chassis are in central cavity；Buffering panel assembly includes buffering
Plate, piston and the second buffer spring, buffer board are connected with piston, and buffer board is in the rear of pressure bearing head, and the second buffer spring is made
For the reset spring of piston；
The buffer bar of buffer board is fixed on rear side of support outer surface or buffer board, support is fixed with for resetting metal chassis
Permanent ring magnet, the piston include the piston with the piston of upper channel cooperation and with lower channel cooperation, the first buffer spring
It is between buffer bar and connecting plate；Support anchors on the ground.
Further, support lower part two sides are equipped with flange, on the ground by bolt anchoring.
Further, the rubber strip length and buffer board is of same size.
Further, the upper channel and lower channel cross sectional shape are rectangle, are connected in upper channel and lower channel and the external world
The exit connect is respectively equipped with two pieces of limit plates, limit plate up and down and is linked together with support.
Further, the pressure bearing head is embedded with cylindrical buffer rubber pad, the diameter and transmission bar of buffer rubber gasket
Diameter it is identical, thickness is less than the thickness of pressure bearing head, and the first buffer spring is fixed on pressure bearing head.
Further, the piston is cuboid piece of stainless steel.
Further, the piston is arranged sealing ring；The metal chassis is in piston-type metal chassis and is arranged sealing
Circle, the support is internally provided with the connecting hole with metal chassis cooperation, and is sealed by sealing ring.
Compared with prior art, the beneficial effects of the present invention are: when buffering lever apparatus is transported to the right under the action of transmission bar
When dynamic, the air in central cavity is compressed, and the piston in lower channel is pushed to move downward, so that buffering panel assembly
It, will be gradually right during buffer board contacts with each other with the first buffer spring with the kinetic energy with buffering lever apparatus opposite direction
The kinetic energy that transmission bar has is consumed, and achievees the purpose that dissipation energy, and buffering lever apparatus when transmission bar speed is larger can be with
Buffering panel assembly moves right jointly after contact, the absorption of energy will be carried out using the gas in central cavity at this time, when saturating
Penetrate bar energy all exhaust after, buffering lever apparatus will be moved to the left under the attraction of permanent magnet, the work in lower channel
Plug will also move right under the action of the second buffer spring, to realize the Rapid reset of entire damping unit.
Detailed description of the invention
Fig. 1 is front view of the invention.
Fig. 2 is A-A sectional view.
Fig. 3 is B-B sectional view.
1-1 support in figure, 1-2 rubber strip, 1-3- flange, 1-4 bolt, 1-5 permanent magnet, 1-6 central cavity, on 1-7
Channel, 1-8 lower channel, 1-9 limit plate, 2-1 pressure bearing head, the first buffer spring of 2-2,2-3 metal tie rods, 2-4 metal bottom
Disk, 2-5 cylindrical buffer rubber pad, 2-6 sealing ring, 3-1 buffer board, 3-2 connecting plate, 3-3 piston, the second buffer spring of 3-4,
3-5 sealing ring.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to the accompanying drawing to embodiment party of the invention
Formula is described in further detail.
A kind of Hopkinson pressure bar damping unit, including support 1-1, buffering lever apparatus, buffering panel assembly.Outside support 1-1
Surface is fixed with rubber strip 1-2, and lower part two sides are equipped with flange 1-3, on the ground by bolt 1-4 anchoring, solid inside support 1-1
Surely there is permanent ring magnet 1-5, exist simultaneously interconnected central cavity 1-6, upper channel 1-7 and lower channel 1-8, buffer bar
Device includes pressure bearing head 2-1, the first buffer spring 2-2, metal tie rods 2-3 and metal chassis 2-4, and buffering panel assembly includes slow
Punching 3-1, connecting plate 3-2, piston 3-3 and the second buffer spring 3-4.
The length of the rubber strip 1-2 is of same size with buffer board 3-1's.
The cross sectional shape of the upper channel 1-7 and lower channel 1-8 are rectangle, upper channel 1-7 and lower channel 1-8 with
The exit of external world's connection is respectively equipped with two pieces of limit plate 1-9, limit plate 1-9 up and down and is linked together with support 1-1.
The pressure bearing head 2-1 is embedded with cylindrical buffer rubber pad 2-5, the diameter and transmission bar of buffer rubber gasket 2-5
Diameter it is identical, thickness is less than the thickness of pressure bearing head 2-1, and the second buffer spring 2-2 is fixed on pressure bearing head 2-1.
The piston 3-3 is cuboid piece of stainless steel.
The metal chassis 2-4 and piston 3-3 is arranged sealing ring 2-6 and 3-5.
When buffering lever apparatus moves right under the action of transmission bar, the air in central cavity 1-6 is compressed, and is pushed away
Piston 3-3 in dynamic lower channel 1-7,1-8 is moved downward, so that buffering panel assembly has side opposite with buffering lever apparatus
To kinetic energy, during buffer board 3-1 and buffer spring I2-2 contact with each other by the kinetic energy gradually having to transmission bar into
Row consumption, achievees the purpose that dissipation energy, and lever apparatus is buffered when transmission bar speed is larger can be with buffering panel assembly after contact
It moves right jointly, the absorption of energy will be carried out using the gas in central cavity 1-6 at this time, when the energy of transmission bar all consumes
After to the greatest extent, the metal chassis 2-4 for buffering lever apparatus will be moved to the left under the attraction of permanent magnet 1-5, the work in lower channel
Plug 3-3 will also be moved right under the action of the second buffer spring 3-4, to realize the Rapid reset of entire damping unit.
Above is only a specific embodiment of the present invention, but structure feature of the invention is not limited thereto, Ren Heben
Within the field of the present invention, made changes or modifications all cover within the protection scope of the present invention the technical staff in field.
Claims (7)
1. a kind of Hopkinson pressure bar damping unit, it is characterised in that: including support, buffering lever apparatus, buffering panel assembly；Support
There is interconnected central cavity, upper channel and the lower channel of sealing in inside, buffering lever apparatus includes pressure bearing head, the first buffering
Spring, metal chassis and connection pressure bearing head and metal tie rods, metal chassis are in central cavity；It includes slow for buffering panel assembly
Punching, piston and the second buffer spring, buffer board are connected with piston, and buffer board is in the rear of pressure bearing head, the second buffer spring
Reset spring as piston；
The buffer bar of buffer board is fixed on rear side of support outer surface or buffer board, support is fixed with for resetting metal chassis
Permanent ring magnet, the piston include the piston with the piston of upper channel cooperation and with lower channel cooperation, the first buffer spring
It is between buffer bar and connecting plate；
Support anchors on the ground.
2. a kind of Hopkinson pressure bar damping unit according to claim 1, it is characterised in that: support lower part two sides are equipped with
Flange, on the ground by bolt anchoring.
3. a kind of Hopkinson pressure bar damping unit according to claim 1, it is characterised in that: the buffer bar length
It is of same size with buffer board.
4. a kind of Hopkinson pressure bar damping unit according to claim 1, it is characterised in that: the upper channel and under
Channel cross-sectional shape is rectangle, is respectively equipped with two pieces of limit plates up and down in the exit that upper channel and lower channel are connect with the external world,
Limit plate is linked together with support.
5. a kind of Hopkinson pressure bar damping unit according to claim 1, it is characterised in that: the pressure bearing head is embedded
There is cylindrical buffer rubber pad, the diameter of buffer rubber gasket and the diameter of transmission bar are identical, and thickness is less than the thickness of pressure bearing head, the
One buffer spring is fixed on pressure bearing head.
6. a kind of Hopkinson pressure bar damping unit according to claim 1, it is characterised in that: the piston is rectangular
Body piece of stainless steel.
7. a kind of Hopkinson pressure bar damping unit according to claim 1, it is characterised in that: the piston is arranged close
Seal；The metal chassis is in piston-type metal chassis and is arranged sealing ring, and the support is internally provided with matches with metal chassis
The connecting hole of conjunction, and sealed by sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403279.2A CN109323937B (en) | 2018-11-23 | 2018-11-23 | Hopkinson pressure bar damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403279.2A CN109323937B (en) | 2018-11-23 | 2018-11-23 | Hopkinson pressure bar damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109323937A true CN109323937A (en) | 2019-02-12 |
| CN109323937B CN109323937B (en) | 2023-10-31 |
Family
ID=65258345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811403279.2A Active CN109323937B (en) | 2018-11-23 | 2018-11-23 | Hopkinson pressure bar damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109323937B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014247A (en) * | 2020-08-12 | 2020-12-01 | 中国人民解放军空军工程大学 | Universal test piece supporting and positioning device of Hopkinson pressure bar and using method |
| CN117470639A (en) * | 2023-12-22 | 2024-01-30 | 深圳大学 | Energy absorption buffer device and method applied to dynamic true triaxial electromagnetic Hopkinson bar |
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| CA2291544A1 (en) * | 1999-12-03 | 2001-06-03 | Dew Engineering And Development Limited | Prodder with force feedback |
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| KR101727405B1 (en) * | 2015-10-28 | 2017-05-02 | 전북대학교산학협력단 | Modification of Hoek triaxial cell for SHPB tests and its application to dynamic shear strength measurement of brittle materials |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014247A (en) * | 2020-08-12 | 2020-12-01 | 中国人民解放军空军工程大学 | Universal test piece supporting and positioning device of Hopkinson pressure bar and using method |
| CN117470639A (en) * | 2023-12-22 | 2024-01-30 | 深圳大学 | Energy absorption buffer device and method applied to dynamic true triaxial electromagnetic Hopkinson bar |
| CN117470639B (en) * | 2023-12-22 | 2024-04-09 | 深圳大学 | Energy absorption buffer device and method applied to dynamic true triaxial electromagnetic Hopkinson bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109323937B (en) | 2023-10-31 |
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