CN202837089U - Confinement cylinder device of Hopkinson pressure bar active confinement experiment - Google Patents
Confinement cylinder device of Hopkinson pressure bar active confinement experiment Download PDFInfo
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- CN202837089U CN202837089U CN201220529131.5U CN201220529131U CN202837089U CN 202837089 U CN202837089 U CN 202837089U CN 201220529131 U CN201220529131 U CN 201220529131U CN 202837089 U CN202837089 U CN 202837089U
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Abstract
The utility model discloses a confinement cylinder device of a Hopkinson pressure bar active confinement experiment, which is characterized by comprising a confinement cylinder body, an incidence rod, a transmission rod, test piece regulating and locating lead screws, a test piece locating and supporting sleeve, an oil-resistant rubber sleeve, oil-resistance rubber sleeve steps, a gauge tube and a gas vent, a high-pressure oil pipe and a sensor base, wherein the gauge tube and the gas vent are arranged in a preformed hole above the confinement cylinder body, the high-pressure oil pipe and a support are arranged below the confinement cylinder body, cylinder covers are respectively arranged on two ends of the confinement cylinder body, the test piece locating and supporting sleeve and the oil-resistant rubber sleeve are arranged in the middle of the confinement cylinder body, the incidence rod and the transmission rod are arranged in the oil-resistant rubber sleeve, test pieces are arranged between the incidence rod and the transmission rod, the oil-resistant rubber sleeve steps are arranged in the middle in the oil-resistant rubber sleeve, the test pieces are placed on the oil-resistant rubber sleeve steps, at least two groups of holes are preformed in the cylinder wall of the confinement cylinder body 1 corresponding to the axial center of the cylinder body, the test piece regulating and locating lead screws in at least three holes in each group correspond to the test piece locating and supporting sleeve, and the sensor base is arranged in a preformed hole in one side of the cover wall of one cylinder cover. The confinement cylinder device is reasonable in design, is used for accurately regulating and fixing the test pieces to ensure that the impact load experimental data of the test pieces, and is prolonged in service life.
Description
Technical field
The utility model relates to the impact loading experiment device of material dynamic mechanical performance, and especially a kind of Hopkinson pressure bar is the confined pressure cylinder assembly of confined pressure experiment initiatively.
Background technology
At present, with underground engineering, anti-seismic structure and protection works to concrete material under complex stress condition high rate of strain dynamic mechanical in the urgent need to, be badly in need of that research is a kind of to realize impact loading experiment device under the complex stress condition.Hopkinson pressure bar (SHPB) is the high strain mechanical property experiment device of material that is most widely used in the world at present, but its impact that can only realize the one-dimensional stress state loads.
The general active confining pressure device that is used for the SHPB experiment is comprised of confined pressure cylinder, rubber sealing boot and hydraulic oil (also can be water or pressurized air) etc., and wherein the confined pressure cylinder is the container of a sealing, and inside is filled with hydraulic oil and is used for test specimen is applied confined pressure; Rubber sealing boot length is greater than test specimen, and its two ends are enclosed within respectively on the incident bar and transmission bar of SHPB, and test specimen is assemblied between incident bar and the transmission bar, prevents that hydraulic oil from infiltrating the effect of test specimen and SHPB surface of contact thereby play.Push in the confined pressure cylinder together with incident bar and transmission bar after the test specimen assembling is complete, then the confining liquid cylinder pressure pumps into hydraulic oil to testing required confined pressure.So far ready before the experiment, recycling SHPB carries out axial impact to test specimen and loads.Because rubber sealing boot rigidity is little, test specimen is packed into, and test specimen can depart from predeterminated position in confined pressure cylinder and the process that is filled with hydraulic oil subsequently, this can cause larger experimental error on the one hand, aspect in addition, the deflection of test specimen and bar can produce shearing force to rubber sealing boot under the effect of high hydraulic pressure, for large diameter SHPB, this shearing force can be destroyed rubber sealing boot especially, and hydraulic oil can cause the failure of an experiment by shear fracture efflux cylinder pressure.In view of above-mentioned many reasons, need to improve the initiatively confined pressure cylinder assembly of confined pressure loading experiment of Hopkinson bar.
The utility model content
Test specimen can depart from predeterminated position to the utility model in the impact loading experiment process in order to solve, and to rubber sealing boot generation shearing force destruction rubber sealing boot, cause the failure of an experiment, by rational design, the initiatively confined pressure cylinder assembly of confined pressure experiment of a kind of Hopkinson pressure bar is provided, can regulate and fix the test specimen position, before guaranteeing test specimen can with incident bar and the strict coaxial impact loading experiment of finishing of transmission bar, obtain accurately experimental data.Simultaneously, be convenient to the test specimen sensor signal lines and draw the confined pressure cylinder.
The utility model is in order to realize above-mentioned goal of the invention, adopt following technical scheme: a kind of Hopkinson pressure bar is the confined pressure cylinder assembly of confined pressure experiment initiatively, is to be made of confined pressure cylinder cylinder body, incident bar, transmission bar, test specimen adjusting positioning screw, test specimen positioning support support set, oil resistant rubber cover, oil resistant rubber cover step, table pipe and vent port, hydraulic oil pipe fitting, sensor holder; Confined pressure cylinder cylinder body top preformed hole arranges table pipe and vent port in the hole, confined pressure cylinder cylinder body below arranges bearing, and the middle part preformed hole of the corresponding bearing of confined pressure cylinder cylinder body arranges the hydraulic oil pipe fitting in the hole; The two ends of confined pressure cylinder cylinder body arrange respectively cylinder cap, concentric axis hole is reserved at the cylinder cap middle part at two ends, incident bar and transmission bar are set respectively in the hole, the coaxial testpieces that arranges between incident bar and the transmission bar, the periphery of incident bar and transmission bar and testpieces arranges the oil resistant rubber cover, the corresponding cylinder cap in oil resistant rubber cover two ends; Oil resistant rubber cover two ends arranged outside boss arranges test specimen positioning support support set between the boss in the oil resistant rubber cover outside; The middle part arranges oil resistant rubber cover step in the oil resistant rubber cover, places testpieces in the oil resistant rubber cover step; The casing wall respective cylinder axon heart of confined pressure cylinder cylinder body is reserved at least two group holes, and every group of at least three holes arrange test specimen and regulate positioning screw in the hole, and test specimen is regulated the end corresponding test specimen positioning support support set of positioning screw; The tegmental wall one side preformed hole of cylinder cap arranges sensor holder in the hole.
Beneficial effect: appropriate design, accurately adjust and fixing test specimen, guarantee the impact loading experiment data of test specimen, the serviceable life of extension device.
Hopkinson pressure bar of the present utility model is the confined pressure cylinder assembly of confined pressure initiatively, is that existing confined pressure cylinder assembly is improved, and it can accurately be regulated and fixing test specimen position easily, reduces experimental error, improves experiment success rate.This device also is convenient to the test specimen sensor lead and is drawn confined pressure cylinder outside to measure.Install easy to operately, sealing is simple, can be pressurized to 40MPa at present, can be used for the dynamic compression properties research of material under the high confining pressure.
The Hopkinson pressure bar that the utility model is introduced the initiatively confined pressure cylinder assembly of confined pressure experiment mainly comprises: confined pressure cylinder body, test specimen are regulated positioning screw, test specimen positioning support support set, oil resistant rubber cover, table pipe and the parts such as vent port and high-pressure oil pipe access port.
Main confined pressure cylinder body is comprised of left and right sides two end cap and cylinder barrel three parts, is bolted between end cap and cylinder barrel, so that installation and the adjusting of the dismounting of end cap and test specimen positioning support support set.Main confined pressure cylinder body adopts 42CrMo high quality carbon element alloy steel, also can adopt other high-strength alloy steels.Be arranged symmetrically with test specimen on the cylinder barrel and regulate a positioning screw, can fine adjustment test specimen positioning support support set and the position of oil resistant rubber cover by the outside adjusting screw(rod) of cylinder barrel.
Test specimen positioning support support set: material is the Q235 steel.The axial length of test specimen positioning support support set equates with the interior axial length of confined pressure cylinder body, and two ends are with raised step, supports uniformly on the jacket wall to have a plurality of screws.
The material of oil resistant rubber cover is the butyronitrile oil resistant rubber.The external diameter of oil resistant rubber cover equates with the internal diameter of test specimen positioning support support set, and internal diameter is than incident bar and the about 2mm of transmission bar diameter, and center section has a raised step, and its internal diameter is more identical with fixing test specimen than test specimen diameter.Oil resistant rubber cover both ends when assembling the end cap of main confined pressure cylinder body, utilize the extruding force between end cap and the test specimen positioning support support set to form sealing also with raised step.Hydraulic pressure is applied on the outer wall of oil resistant rubber cover by the perforate of test specimen positioning support support set in the confined pressure cylinder, and test specimen is produced uniform radial pressure (confined pressure).
Confined pressure cylinder slot milling so that install, is also drawn for test specimen upper sensor signal wire simultaneously in have an appointment between oil resistant rubber cover and incident bar and the transmission bar gap of 2mm.
Specific works principle (operation steps) is:
1, the position of regulating the confined pressure cylinder is coaxial with incident bar and transmission bar;
2, put into test specimen positioning support support set and oil resistant rubber cover, regulate test specimen adjusting positioning screw coaxial with rod member to test specimen positioning support support set and oil resistant rubber cover, fixedly confined pressure cylinder end cap is installed;
3, the assembling test specimen is to the intermediate projections step place of oil resistant rubber cover;
4, assembling incident bar and transmission bar make that itself and test specimen are coaxial to be contacted;
5, open confined pressure cylinder vent port, pump into hydraulic oil fuel-displaced to vent port, then close the valve of vent port, pump into hydraulic oil extremely
Test required confined pressure.So far, confined pressure loads and finishes.
Experiment is laid down hydraulic oil after finishing, and takes out test specimen.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1; A kind of Hopkinson pressure bar is the positive sectional structure schematic diagram of the confined pressure cylinder assembly of confined pressure experiment initiatively;
Fig. 2: the side of confined pressure cylinder is cutd open structural representation;
Fig. 3: the side of test specimen positioning support support set is cutd open structural representation;
Fig. 4: the structural representation of test specimen positioning support support set;
Fig. 5: the structural representation of oil resistant rubber cover.
Among Fig. 1 .2.3.4.5; Confined pressure cylinder cylinder body 1, incident bar 2, transmission bar 3, test specimen are regulated positioning screw 4, test specimen positioning support support set 5, oil resistant rubber cover 6, oil resistant rubber cover step 6-1, table pipe and vent port 7, hydraulic oil pipe fitting 8, sensor holder 9.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in the figure: confined pressure cylinder cylinder body 1 top preformed hole, table pipe and vent port 7 are set in the hole, confined pressure cylinder cylinder body 1 below arranges bearing, and the middle part preformed hole of confined pressure cylinder cylinder body 1 corresponding bearing arranges hydraulic oil pipe fitting 8 in the hole; The two ends of confined pressure cylinder cylinder body 1 arrange respectively cylinder cap, concentric axis hole is reserved at the cylinder cap middle part at two ends, incident bar 2 and transmission bar 3 are set respectively in the hole, the coaxial testpieces that arranges between incident bar 2 and the transmission bar 3, incident bar 2 arranges oil resistant rubber cover 6 with the periphery of transmission bar 3 and testpieces, and oil resistant rubber overlaps the corresponding cylinder cap in 6 two ends; Oil resistant rubber overlaps 6 two ends arranged outside boss, and oil resistant rubber overlaps between the boss in 6 outsides test specimen positioning support support set 5 is set; Oil resistant rubber overlaps 6 interior middle parts oil resistant rubber cover step 6-1 is set, and places testpieces among the oil resistant rubber cover step 6-1; The casing wall respective cylinder axon heart of confined pressure cylinder cylinder body 1 is reserved at least two group holes, and every group of at least three holes arrange test specimen and regulate positioning screw 4 in the hole, and test specimen is regulated the end corresponding test specimen positioning support support set 5 of positioning screw 4; The tegmental wall one side preformed hole of cylinder cap arranges sensor holder 9 in the hole.
Claims (4)
1. the Hopkinson pressure bar confined pressure cylinder assembly of confined pressure experiment initiatively, by confined pressure cylinder cylinder body (1), incident bar (2), transmission bar (3), test specimen is regulated positioning screw (4), test specimen positioning support support set (5), oil resistant rubber cover (6), oil resistant rubber cover step (6-1), table pipe and vent port (7), hydraulic oil pipe fitting (8), sensor holder (9) consists of, it is characterized in that: confined pressure cylinder cylinder body (1) top preformed hole, table pipe and vent port (7) are set in the hole, confined pressure cylinder cylinder body (1) below arranges bearing, the middle part preformed hole of the corresponding bearing of confined pressure cylinder cylinder body (1) arranges hydraulic oil pipe fitting (8) in the hole; The two ends of confined pressure cylinder cylinder body (1) arrange respectively cylinder cap, concentric axis hole is reserved at the cylinder cap middle part at two ends, incident bar (2) transmission bar (3) is set respectively in the hole, the coaxial testpieces that arranges between incident bar (2) and the transmission bar (3), the periphery of incident bar (2) transmission bar (3) and testpieces arranges oil resistant rubber cover (6), the inwall of the corresponding cylinder cap in oil resistant rubber cover (6) two ends.
2. the confined pressure cylinder assembly of confined pressure experiment initiatively of a kind of Hopkinson pressure bar described in according to claim 1, it is characterized in that: oil resistant rubber cover (6) two ends arranged outside boss arranges test specimen positioning support support set (5) between the boss in oil resistant rubber cover (6) outside.
3. the confined pressure cylinder assembly of confined pressure experiment initiatively of a kind of Hopkinson pressure bar described in according to claim 1, it is characterized in that: the middle part arranges oil resistant rubber cover step (6-1) in the oil resistant rubber cover (6).
4. the confined pressure cylinder assembly of confined pressure experiment initiatively of a kind of Hopkinson pressure bar described in according to claim 1, it is characterized in that: the casing wall respective cylinder axon heart of confined pressure cylinder cylinder body (1) is reserved at least two group holes, every group of at least three holes, test specimen is set in the hole regulates positioning screw (4), test specimen is regulated the corresponding test specimen positioning support support set (5) in end of positioning screw (4); The tegmental wall one side preformed hole of cylinder cap arranges sensor holder (9) in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220529131.5U CN202837089U (en) | 2012-09-29 | 2012-09-29 | Confinement cylinder device of Hopkinson pressure bar active confinement experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220529131.5U CN202837089U (en) | 2012-09-29 | 2012-09-29 | Confinement cylinder device of Hopkinson pressure bar active confinement experiment |
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| CN201220529131.5U Expired - Fee Related CN202837089U (en) | 2012-09-29 | 2012-09-29 | Confinement cylinder device of Hopkinson pressure bar active confinement experiment |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278404A (en) * | 2013-05-20 | 2013-09-04 | 洛阳理工学院 | Testing device and method for simulating deep rock mass impact failure |
| CN103471906A (en) * | 2013-08-24 | 2013-12-25 | 中国人民解放军陆军军官学院 | Retaining ring used for preventing rod piece from moving outwards during Hopkinson pressure bar confining pressure test |
| CN103616279A (en) * | 2013-11-13 | 2014-03-05 | 中国人民解放军空军工程大学 | Circumferential pressurizing device for large-diameter Hopkinson pressure bar |
| CN103743665A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Loading device for simulating stress of coal rock |
| CN103852373A (en) * | 2014-03-20 | 2014-06-11 | 中国人民解放军理工大学 | Three-way confining pressure and temperature combined loading device for Hopkinson compression bar impact test |
| CN104048883A (en) * | 2014-03-03 | 2014-09-17 | 四川大学 | Method for testing brittle material dynamic-shear fracture toughness and implementation device thereof |
| CN104198274A (en) * | 2014-09-16 | 2014-12-10 | 福建江夏学院 | Novel support device of split Hopkinson pressure bar and adjustment method of support device |
| CN104677725A (en) * | 2015-02-13 | 2015-06-03 | 洛阳利维科技有限公司 | Confining pressure cylinder device for novel split Hopkinson pressure bar active confining pressure experiment |
| CN105758704A (en) * | 2016-02-23 | 2016-07-13 | 繁昌县菲德通讯材料设计有限公司 | Confining pressure testing device for Hopkinson pressure bar |
| CN107255598A (en) * | 2017-07-05 | 2017-10-17 | 安徽理工大学 | Make the confining pressure device that soil sample is easily taken out in a kind of hopkinson test |
| CN107966371A (en) * | 2017-12-20 | 2018-04-27 | 北京科技大学 | A kind of portable self sealss rock SHPB experiments confined pressure pressue device |
| CN110082228A (en) * | 2019-02-18 | 2019-08-02 | 中国矿业大学(北京) | A kind of the Hopkinson impact experiment apparatus and method of coal containing methane gas |
| CN110926927A (en) * | 2019-12-03 | 2020-03-27 | 四川大学 | Flip formula hopkinson pole confined pressure device |
| CN112268806A (en) * | 2020-10-14 | 2021-01-26 | 合肥工业大学 | Confining pressure loading device based on separated Hopkinson pressure bar |
-
2012
- 2012-09-29 CN CN201220529131.5U patent/CN202837089U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278404B (en) * | 2013-05-20 | 2015-06-03 | 洛阳理工学院 | Testing device and method for simulating deep rock mass impact failure |
| CN103278404A (en) * | 2013-05-20 | 2013-09-04 | 洛阳理工学院 | Testing device and method for simulating deep rock mass impact failure |
| CN103471906A (en) * | 2013-08-24 | 2013-12-25 | 中国人民解放军陆军军官学院 | Retaining ring used for preventing rod piece from moving outwards during Hopkinson pressure bar confining pressure test |
| CN103616279A (en) * | 2013-11-13 | 2014-03-05 | 中国人民解放军空军工程大学 | Circumferential pressurizing device for large-diameter Hopkinson pressure bar |
| CN103616279B (en) * | 2013-11-13 | 2016-02-24 | 中国人民解放军空军工程大学 | For the hoop pressue device of large-diameter Hopkinson pressure bar |
| CN103743665A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Loading device for simulating stress of coal rock |
| CN104048883B (en) * | 2014-03-03 | 2016-08-17 | 四川大学 | The method of testing brittle material dynamic shearing fracture toughness and enforcement device thereof |
| CN104048883A (en) * | 2014-03-03 | 2014-09-17 | 四川大学 | Method for testing brittle material dynamic-shear fracture toughness and implementation device thereof |
| CN103852373A (en) * | 2014-03-20 | 2014-06-11 | 中国人民解放军理工大学 | Three-way confining pressure and temperature combined loading device for Hopkinson compression bar impact test |
| CN104198274A (en) * | 2014-09-16 | 2014-12-10 | 福建江夏学院 | Novel support device of split Hopkinson pressure bar and adjustment method of support device |
| CN104677725A (en) * | 2015-02-13 | 2015-06-03 | 洛阳利维科技有限公司 | Confining pressure cylinder device for novel split Hopkinson pressure bar active confining pressure experiment |
| CN105758704A (en) * | 2016-02-23 | 2016-07-13 | 繁昌县菲德通讯材料设计有限公司 | Confining pressure testing device for Hopkinson pressure bar |
| CN105758704B (en) * | 2016-02-23 | 2018-12-14 | 繁昌县菲德通讯材料设计有限公司 | A kind of Hopkinson pressure bar confining pressure test device |
| CN107255598A (en) * | 2017-07-05 | 2017-10-17 | 安徽理工大学 | Make the confining pressure device that soil sample is easily taken out in a kind of hopkinson test |
| CN107255598B (en) * | 2017-07-05 | 2020-01-07 | 安徽理工大学 | Confining pressure device for enabling soil sample to be taken out easily in Hopkinson test |
| CN107966371A (en) * | 2017-12-20 | 2018-04-27 | 北京科技大学 | A kind of portable self sealss rock SHPB experiments confined pressure pressue device |
| CN110082228A (en) * | 2019-02-18 | 2019-08-02 | 中国矿业大学(北京) | A kind of the Hopkinson impact experiment apparatus and method of coal containing methane gas |
| CN110926927A (en) * | 2019-12-03 | 2020-03-27 | 四川大学 | Flip formula hopkinson pole confined pressure device |
| CN112268806A (en) * | 2020-10-14 | 2021-01-26 | 合肥工业大学 | Confining pressure loading device based on separated Hopkinson pressure bar |
| CN112268806B (en) * | 2020-10-14 | 2023-04-14 | 合肥工业大学 | Confining pressure loading device based on separated Hopkinson pressure bar |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190723 Address after: 471023 No. 3, Xishan Road, Luolong District, Henan, Luoyang, Longmen Patentee after: INSTITUTE OF ENGINEERING PROTECTION, NATIONAL DEFENSE ENGINEERING RESEARCH INSTITUTE, ACADEMY OF MILITARY SCIENCES OF PLA Address before: 471023 Three Research Institutes of General Engineers and Soldiers of No.3 Longmen Xishan Road, Luolong District, Luoyang City, Henan Province Patentee before: Zhang Lei |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20210929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |