CN209311242U - A kind of auxiliary device applied to Hopkinson pressure bar - Google Patents
A kind of auxiliary device applied to Hopkinson pressure bar Download PDFInfo
- Publication number
- CN209311242U CN209311242U CN201821920363.7U CN201821920363U CN209311242U CN 209311242 U CN209311242 U CN 209311242U CN 201821920363 U CN201821920363 U CN 201821920363U CN 209311242 U CN209311242 U CN 209311242U
- Authority
- CN
- China
- Prior art keywords
- support
- leading portion
- protective housing
- test
- type protective
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of auxiliary devices applied to Hopkinson pressure bar, including support, four part of protective housing, test specimen support device and collection device.Wherein collection device is when carrying out impact compression test for the fragment after collecting test specimen impact failure, test specimen support device is used to support the test specimen of longer dimension when carrying out layer and splitting test, prevent it from falling before and after experiment, protective housing includes I type protective housing and II type protective housing, it is respectively used to impact compression test and layer splits the protection of test, the ejection fraction that can effectively avoid test specimen generation damages testing crew, support includes leading portion support and back segment support, can be used alone leading portion support when carrying out impact compression test test, carry out when layer splits test can will before, back segment support uses after being integrally formed by flange and connector splicing.The utility model is mountable on various sizes of i shaped cross section guide rail, and splits the protection, support and collection of test suitable for impact compression test and layer simultaneously, there is very strong applicability.
Description
Technical field
The utility model relates to materials under high strain-rate dynamic mechanical behavior experimental rig field, and in particular to Yi Zhongying
Auxiliary device for Hopkinson pressure bar.
Background technique
Split Hopkinson Bar is used to carry out dynamic of the research material under high strain-rate first from Kolsky in 1949
It is easy to operate since its experimental rig structure is relatively simple after mechanical behavior, phase can be adjusted according to the difference of strike air pressure
The strain rate answered, split hopkinson press bar device have been widely applied to the dynamic mechanical behavior research field of material
In.It uses incident bar and transmission bar when SHPB technology to be in elastic stage always simultaneously, dynamic is carried out while Impulsive load
Measurement, can ignore strain rate effect, in addition when test specimen is short enough, velocity of wave is sufficiently fast, test specimen can be considered as homogeneous deformation
State, so that ignoring effects of stress wave only counts strain rate effect, because SHPB experimental technique imitates effects of stress wave and strain rate
It should cleverly be decoupled, provide reliable theoretical basis for the dynamic mechanical behavior of research material.
Split hopkinson press bar is mainly used to the impact compression test for carrying out material at present and layer splits test.Work as progress
When impact compression test, by short sample holder between incident bar and transmission bar, generate it using air gun driving bullet certain
Initial velocity, one end of incident bar is hit, the incident compression stress wave of generation deforms height of specimen, while entering
It penetrates and generates back wave in bar, transmitted wave is propagated in transmission bar.It is recorded using the foil gauge for turning to be posted on incident bar and transmission bar
These stress wave information can analyze the dynamic mechanical of test specimen after system is handled.Test is split when carrying out layer
When, it is typically chosen the length of suitable trip rod and test specimen, and directly paste foil gauge on test specimen, is directly remembered by foil gauge
The maximum value for recording elongation strain is assumed according to the linear elasticity of material, calculates material with elongation strain maximum value and elasticity modulus
Spallation strength.
When splitting test to fragile material progress impact compress or layer using split hopkinson press bar, in high strain-rate feelings
Test specimen often generates a large amount of ejection fractions under condition, on the one hand can threaten to personnel safety, on the other hand will cause fragment
The difficulty of collection.It is easy to glide or fall off there is also longer test specimen when carrying out layer and splitting test simultaneously, is not easy the problem of supporting,
In addition corresponding conducting wire is needed to be attached across protective device with the external world after pasting foil gauge on test specimen.At present not yet simultaneously
Having to split test safety device applied to impact compression test and layer simultaneously.
Utility model content
In order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide a kind of applied to Hopkinson pressure bar
Auxiliary device, the device is easy for assemble or unload, strong applicability, can solve the protection in impact compression test simultaneously, fragment is received
Collection and layer split the support of test, protection question.
The technical solution adopted in the utility model is as follows:
A kind of auxiliary device applied to Hopkinson pressure bar, including support, protective housing, test specimen support device and collection dress
Set four parts；The protective housing includes I type protective housing and II type protective housing, and the support includes leading portion support and back segment branch
Seat, the leading portion support and the removable connection of back segment support, the leading portion support are used for impact compression test, the leading portion support
Test is split for layer with the connector of back segment support, length and leading portion the support adaptation of the I type protective housing are used for impact compress
The protection of test, length and back segment the support adaptation of the II type protective housing, the combination of the I type protective housing and II type protective housing
The protection of test is split for layer.
On the basis of by adopting the above technical scheme, technical solution further below is also can be used in the utility model, or
These further solution pools are used:
The leading portion support, back segment support, I type protective housing, II type protective housing material be that organic glass etc. is colourless
Transparent material can shoot leading portion support described in the overall process that test specimen destroys by placing high-speed camera in side in test
Front end face is equipped with the lower half circular hole passed through for incident bar, and rear end face is detachable baffle, passes through groove and leading portion support master
Body is spliced, and detachable baffle is equipped with the lower half circular hole passed through for transmission bar, and leading portion support lower end surface is equipped with two cunnings
Slot, two sides are respectively equipped with flange, for being attached with back segment support.
Lower half circle hole diameter on the leading portion support front end face is identical as the diameter of incident bar, described detachable
Lower half circle hole diameter on baffle is identical as the diameter of transmission bar.
The width of the leading portion support and rear end support is greater than the width of guide rail used, the forward mount and rear end support
It is provided with the adjustable connection structure with guide rail cooperation.Further, the adjustable connection structure includes: leading portion support and rear end branch
The threaded hole being respectively equipped on the baffle that seat two sides extend downwardly passes through the standing screw and fixed spiral shell being installed in threaded hole
Leading portion support and rear end support are fixed on I-shaped guide rail by mother.
The standing screw stated is made of screw rod and L shape limited block, and limited block is located at the end point of screw rod, limited block and screw rod
Junction is equipped with sliding bearing, so that L shape limited block remain stationary state when screw rod rotates.
The described back segment support front/rear end perforation, lower end surface are equipped with the two bar sliding slots of same size with leading portion support, and two
Side is respectively equipped with connector, for being attached with leading portion support.
The width of the back segment support is of same size with leading portion support, on the baffle that back segment support two sides extend downwardly
It is respectively equipped with 1 threaded hole, back segment support is fixed on by I-shaped by the standing screw and fixture nut that are installed in threaded hole
On shape guide rail.
The distance between the I type protective housing length and leading portion support front/rear end inner surface identical, width and leading portion
The distance between support two sides inner surface is identical, is provided with arch door shape hole, the I type protection in I type protective housing front/rear end
Case is provided with support construction, the hole after I type protective housing is put into leading portion support, on I type protective housing and leading portion support front/rear end
Hole just forms the circular hole passed through for incident bar and transmission bar.
The II type protective housing length is identical as the total length after the section support split of front and back, width and back segment support two sides
The distance between face inner surface is identical, and the perforation of II type protective housing front-back, a side is equipped with round conductor hole wherein, is used for
The conducting wire being connected across the foil gauge being pasted on test specimen.
The test specimen support device includes pallet, studdle, upper holding nut, lower holding nut and gasket, pallet
Middle part is semi-cylindrical pallet, and interior diameter is identical as the diameter of test specimen, and the top of radical length 80mm, studdle are smooth,
It is not provided with screw thread, for the socket with pallet.
The collection device is truncated rectangular pyramids shape collection box, the area phase that four end faces of top surface area and leading portion support surround
Together.
Compared with prior art, the utility model has the following beneficial effects:
1, it can solve the problems, such as that protection, garbage collection and the layer of impact compression test split the protection and test specimen branch of test simultaneously
Support problem.It only needs installation leading portion support and I type protective housing to be tested when carrying out impact compression test, splits test when carrying out layer
When, without removing leading portion support, only back segment support and leading portion support need to be subjected to splicing installation, and be using II type protective housing
It can；And it is easy for installation, it is easy to disassemble.
2, when progress layer splits test, the quantity and installation of test specimen support device can be selected according to the specific size of test specimen
Position is installed, and the bearing height by adjusting test specimen support device can make test specimen placement coaxial with incident bar, while energy
It is enough that test specimen is effectively supported after experiment, it prevents test specimen from falling after layer is split and causes secondary destruction.
3, the specification requirement ununified due to the guide rail of current hopkinson test device, passes through what is cooperated with I-steel
Front and back section support can be fixed on the I-shaped guide rail of different in width, greatly strengthen the present apparatus by adjustable mounting structure
Versatility.
Detailed description of the invention
Fig. 1 is the leading portion support explosive view of the utility model.
Fig. 2 is the back segment support tomograph of the utility model.
Fig. 3 is the I type protective housing structural schematic diagram of the utility model.
Fig. 4 is the II type protective housing structural schematic diagram of the utility model.
Fig. 5 is the front view of test specimen support device.
Fig. 6 is the top view of test specimen support device.
Fig. 7 is the side view of test specimen support device.
Fig. 8 is the device side view for impact compression test of the utility model.
Fig. 9 is the A-A sectional view of Fig. 8.
Figure 10 is the B-B sectional view of Fig. 8.
Figure 11 is the device side view that test is split for layer of the utility model.
Figure 12 is the C-C sectional view of Figure 11.
Figure 13 is the D-D sectional view of Figure 11.
Figure label explanation: 1 is leading portion support, and 1-1 is leading portion support incident bar lower half circular hole, and 1-2 is leading portion support
Transmission bar lower half circular hole, 1-3 are detachable baffles, and 1-4 is leading portion support threaded hole, and 1-5 is flange, and 1-6 is groove,
1-7 is leading portion support sliding slot, and 2 be back segment support, and 2-1 is connector, and 2-2 is back segment support threaded hole, and 2-3 is back segment support
Sliding slot, 3 be I type protective housing, and 3-1 is arch door shape hole, and 3-2 is support construction, and 4 be II type protective housing, and 4-1 is wire guide, 5
It is test specimen support device, 5-1 is studdle, and 5-2 is upper holding nut, and 5-3 is gasket, and 5-4 is pallet, and 5-5 is lower support
Nut, 6-1 are L shape limited blocks, and 6-2 is screw rod, and 6-3 is fixture nut, and 7 be I-shaped guide rail, and 8 be collection device.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
A kind of auxiliary device applied to Hopkinson pressure bar, including support, protective housing, test specimen support device 5 and collection
8 four part of device.The support includes leading portion support 1 and back segment support 2, and the protective housing includes I type protective housing 3 and II
Type protective housing 4, is respectively used to impact compression test and layer splits the protection of test.The leading portion support, back segment support, I type are anti-
Protecting box, II type protective housing material be colourless transparent resin glass, test when can by side place high-speed camera
Shoot the overall process that test specimen destroys.
The leading portion support front end face is equipped with the lower half circular hole 1-1 passed through for incident bar, and rear end face is detachable
Baffle 1-3 is spliced and with groove 1-6 grafting in leading portion support body with leading portion support body, detachable gear
Plate is equipped with the lower half circular hole 1-2 passed through for transmission bar, and leading portion support lower end surface is equipped with two sliding slot 1-7, and two sides are set respectively
There is flange 1-5, for being attached with back segment support 2.
Lower half circle hole diameter 1-1 on the leading portion support front end face is identical as the diameter of incident bar, described removable
The lower half circle hole diameter 1-2 unloaded on formula baffle is identical as the diameter of transmission bar.
The leading portion support width is greater than the width of I-steel guide rail 7 used, the gear that leading portion support two sides extend downwardly
Two threaded hole 1-4 are respectively equipped on plate, by the standing screw that is installed in threaded hole and fixture nut 6-3 by leading portion branch
Seat is fixed on I-shaped guide rail 7.
The standing screw is made of screw rod 6-2 and L shape limited block 6-1, and L shape limited block is located at the end point of screw rod, L
Shape limited block and screw rod junction are equipped with sliding bearing, so that L shape limited block remain stationary state when screw rod rotates.The L
It is stainless steel that shape, which limits block of material,.
2 front/rear end of the back segment support perforation, lower end surface is equipped with two of same size with leading portion support sliding slot 1-7
Sliding slot 2-3, two sides are respectively equipped with connector 2-1, are attached for the flange 1-5 with leading portion support.
The width of the back segment support 2 is of same size with leading portion support 1, the baffle that back segment support two sides extend downwardly
On be respectively equipped with 1 threaded hole 2-2, back segment support 2 is consolidated by the standing screw and fixture nut that are installed in threaded hole 2-2
Due on I-shaped guide rail.Standing screw and fixture nut are identical as the structure of the standing screw of leading portion support and fixture nut.
The distance between 3 length of I type protective housing and leading portion support front/rear end inner surface identical, width and leading portion
The distance between support two sides inner surface is identical, is provided with arch door shape hole 3-1 in I type protective housing front/rear end, the I type is anti-
Protecting box 3 is provided with support construction 3-2, can be the two sides arch door shape hole 3-1 end plate, and I type protective housing 3 is being put into leading portion branch
It after seat, is supported in leading portion support by support construction 3-2, before and after the arch door shape hole 3-1 and leading portion support of I type protective housing
Lower half circular hole on end face just forms the circular hole passed through for incident bar and transmission bar.
4 length of II type protective housing is identical as the total length after front and back section support 1,2 splits, width and back segment support
The distance between two sides inner surface is identical, and the perforation of 4 front-back of II type protective housing, a side is equipped with round conductor hole wherein
4-1, the conducting wire for being connected across the foil gauge being pasted on test specimen.The height of II type protective housing 4 and the height of I type protective housing 3
It spends of substantially equal.
The test specimen support device includes pallet 5-4, studdle 5-1, upper holding nut 5-2, lower holding nut 5-5
And the middle part gasket 5-3, pallet 5-4 is semi-cylindrical pallet, interior diameter is identical as the diameter of test specimen, radical length 80mm, branch
The top for supportting screw rod is smooth, screw thread is not provided with, for the socket with pallet.
Collection device 8 can be the disk that can be put into leading portion support 1.
When carrying out impact compression test, leading portion support 1 is placed on the I-shaped guide rail 7 of Hopkinson device, it can
Detachable baffle 1-3 is inserted into along groove 1-6, and is put into collection device 8, and incident bar and transmission bar are passed through lower half circular hole respectively
Hole 1-1 and 1-2 move into the inside of leading portion support, the screw rod 6-2 being installed in leading portion support threaded hole 1-4 are then screwed, so that L
Shape limited block 6-1 withstands I-shaped guide rail, and installs fixture nut 6-3 and be fixed.Test specimen is clipped in incident bar and transmission bar
Between, I type protective housing 3 is covered, 3 front/rear end of I type protective housing is provided with arch door shape hole 3-1, on leading portion support front/rear end
Hole 1-1,1-2 just form the circular hole passed through for incident bar and transmission bar.After the test, test specimen fragment will be complete
Clan enters in collection device 8.
When carrying out layer and splitting test, first by leading portion support 1 and back segment support 2 by flange 1-5 and connector 2-1 into
Row connection, so that sliding slot 1-7,2-3 of front and back section support become a sliding slot, front and back section support is integrally formed, incident bar is led to
The inside that leading portion support incident bar lower half circular hole 1-1 moves into leading portion support is crossed, then screws and is installed on leading portion support threaded hole
Screw rod 6-2 in 1-4 and back segment support threaded hole 2-2 so that L shape limited block 6-1 withstands I-shaped guide rail, and installs fixation
Front and back section support is fixed on I-shaped guide rail by nut 6-3.According to the specific length of test specimen, the test specimen branch of respective numbers is selected
Support arrangement 5 is installed, studdle 5-1 insertion front and back section support when installation first by two with upper holding nut 5-2
Sliding slot 1-7,2-3 in, holding nut 5-5 and gasket 5-3 is fixed under then installing on the downside of the bottom surface of support saddle, pallet 5-4
It is socketed in the top of two studdle 5-1, since the top of studdle 5-1 is smooth section, pallet 5-4 will block
In the intersection of studdle 5-1 smooth section and thread segment.It can control pallet by adjusting upper and lower holding nut 5-2,5-5
Height it is consistent with the height of incident bar, be subsequently placed into test specimen, II type protective housing 4, the foil gauge that will be pasted on test specimen be installed
The conducting wire of connection passes through wire guide 4-1 and is connected with external instrument, carries out layer and splits test.
The foregoing is merely the structure features of specific embodiment of the utility model, but the utility model to be not limited to
This, in the field of the utility model, made changes or modifications all cover practical new at this any those skilled in the art
Among the protection scope of type.
Claims (12)
1. a kind of auxiliary device applied to Hopkinson pressure bar, including support, protective housing, test specimen support device and collection device
Four parts；The protective housing includes I type protective housing and II type protective housing, and the support includes leading portion support and back segment branch
Seat, the leading portion support and the removable connection of back segment support, the leading portion support are used for impact compression test, the leading portion support
Test is split for layer with the connector of back segment support, length and leading portion the support adaptation of the I type protective housing are used for impact compress
The protection of test, length and back segment the support adaptation of the II type protective housing, the combination of the I type protective housing and II type protective housing
The protection of test is split for layer.
2. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: before described
Section support, back segment support, I type protective housing, II type protective housing material be colorless and transparent material.
3. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: before described
Section support front end face is equipped with the lower half circular hole passed through for incident bar, and rear end face is detachable baffle, passes through groove and leading portion
Support body is spliced, and detachable baffle is equipped with the lower half circular hole passed through for transmission bar, and leading portion support lower end surface is equipped with
Two sliding slots, two sides are respectively equipped with flange, for being attached with back segment support.
4. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 3, it is characterised in that: before described
Lower half circle hole diameter on section support front end face is identical as the diameter of incident bar, the lower half circular hole on the detachable baffle
Hole dia is identical as the diameter of transmission bar.
5. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: the leading portion
The width of support and rear end support is greater than the width of guide rail used, and the forward mount and rear end support are provided with to be cooperated with guide rail
Adjustable connection structure.
6. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 5, it is characterised in that: described adjustable
Connection structure includes: the threaded hole being respectively equipped on leading portion support and baffle that rear end support two sides extend downwardly, passes through peace
Loaded in threaded hole standing screw and fixture nut leading portion support and rear end support be fixed on I-shaped guide rail.
7. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 6, it is characterised in that: described consolidates
Determine screw rod to be made of screw rod and L shape limited block, limited block is located at the end point of screw rod, and limited block and screw rod junction are equipped with sliding
Bearing, so that L shape limited block remain stationary state when screw rod rotates.
8. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: after described
Section support front/rear end perforation, lower end surface are equipped with two sliding slots identical with the trough width of leading portion support, and two sides are set respectively
There is connector, for being attached with leading portion support.
9. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: the I
Type protective housing length is identical as the distance between leading portion support front/rear end inner surface, width and leading portion support two sides inner surface
The distance between it is identical, be provided with arch door shape hole in I type protective housing front/rear end, the I type protective housing is provided with support construction,
After I type protective housing is put into leading portion support, the hole on I type protective housing and leading portion support front/rear end is just formed for incident bar
The circular hole passed through with transmission bar.
10. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: described
II type protective housing length is identical as the total length after the section support split of front and back, between width and back segment support two sides inner surface
Apart from identical, the perforation of II type protective housing front-back, a side is equipped with round conductor hole wherein, for across being pasted onto test specimen
On the connected conducting wire of foil gauge.
11. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: described
Test specimen support device includes pallet, studdle, upper holding nut, lower holding nut and gasket, is semi-cylindrical in the middle part of pallet
Pallet, interior diameter is identical as the diameter of test specimen, and the top of studdle is smooth, is not provided with screw thread, for the socket with pallet.
12. a kind of auxiliary device applied to Hopkinson pressure bar according to claim 1, it is characterised in that: described
Collection device is truncated rectangular pyramids shape collection box, and top surface area is identical as the area that four end faces of leading portion support surround.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821920363.7U CN209311242U (en) | 2018-11-21 | 2018-11-21 | A kind of auxiliary device applied to Hopkinson pressure bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821920363.7U CN209311242U (en) | 2018-11-21 | 2018-11-21 | A kind of auxiliary device applied to Hopkinson pressure bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311242U true CN209311242U (en) | 2019-08-27 |
Family
ID=67673914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821920363.7U Active CN209311242U (en) | 2018-11-21 | 2018-11-21 | A kind of auxiliary device applied to Hopkinson pressure bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209311242U (en) |
-
2018
- 2018-11-21 CN CN201821920363.7U patent/CN209311242U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109813618B (en) | Vertical Hopkinson pressure bar test device and test method | |
| CN105424470A (en) | Clamping device and experiment method for split Hopkinson torsion bar test piece | |
| CN109283257B (en) | Test system for destroying space-time evolution under rock deep complex environment | |
| CN102109436B (en) | Electromagnetic impact dynamic tensile test method and device | |
| CN110095240B (en) | Auxiliary loading device for rigidity test of turbine engine case | |
| CN201852662U (en) | Device for measuring relationship between pre-tightening torque and axial force of anchor bolt | |
| CN103558100A (en) | Hopkinson tension and compression integrated experimental device | |
| CN104949880B (en) | A kind of horizontal SHPB beams bar experimental rig | |
| CN111562178A (en) | Dynamic tensile test device with kinetic energy absorption and test method | |
| CN104777033A (en) | Four-point bending fatigue test clamp | |
| CN109406314A (en) | A kind of auxiliary device applied to Hopkinson pressure bar | |
| CN209311242U (en) | A kind of auxiliary device applied to Hopkinson pressure bar | |
| CN114034541A (en) | Split Hopkinson rock impact test device | |
| CN105486592A (en) | Steel fiber tensioning and clamping fixture and steel fiber tensile strength testing system | |
| CN114199496B (en) | High-magnitude classical impact test device and using method thereof | |
| CN210533859U (en) | Auxiliary loading device for split Hopkinson pressure bar test sample | |
| CN106442578B (en) | Two-orbit portable pipe digitizes detection device | |
| CN109323939A (en) | A kind of dynamic adhesion performance testing device based on Hopkinson pressure bar | |
| CN201859100U (en) | Engine flywheel detecting device | |
| CN207440018U (en) | A kind of more acoustic emission sensor fixing devices of adjustable masonry test specimen | |
| CN109187197B (en) | Anchor bolt anti-tensile-pulling strength detection device for building construction | |
| CN101655430B (en) | Non-destructive testing experimental device of wood materials | |
| CN209311243U (en) | A kind of dynamic adhesion performance testing device based on Hopkinson pressure bar | |
| CN204988857U (en) | Horizontal SHPB restraints pole test device | |
| CN209878457U (en) | Movable deformed steel testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |