CN111504770A - Support arrangement for hopkinson depression bar - Google Patents
Support arrangement for hopkinson depression bar Download PDFInfo
- Publication number
- CN111504770A CN111504770A CN202010464040.7A CN202010464040A CN111504770A CN 111504770 A CN111504770 A CN 111504770A CN 202010464040 A CN202010464040 A CN 202010464040A CN 111504770 A CN111504770 A CN 111504770A
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- support
- adjusting
- hopkinson
- test piece
- right adjusting
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- 238000012360 testing method Methods 0.000 claims abstract description 84
- 239000012634 fragment Substances 0.000 claims abstract description 39
- 239000004816 latex Substances 0.000 claims description 5
- 229920000126 latex Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 18
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009863 impact test Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
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
- G01N3/02—Details
-
- 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
-
- 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
Abstract
The invention relates to the field of research on dynamic mechanical properties of materials, and discloses a support device for a Hopkinson pressure bar, which comprises a fragment collecting structure and a test piece support structure; the fragment collecting structure comprises a collecting box; the test piece supporting structure is arranged in the collecting box; the specimen support structure includes: the device comprises a supporting component, an up-down adjusting component and a left-right adjusting component; the supporting component is arranged on the left-right adjusting component through the up-down adjusting component; the two opposite sides of the collecting box are provided with Hopkinson bar preformed holes which correspond to and are coaxial with the test pieces placed on the supporting component. According to the support device of the Hopkinson pressure bar, the test piece support structure is arranged in the fragment collection structure, the test piece before impact is supported and adjusted by the test piece support structure, and the fragments after impact are collected by the fragment collection structure, so that the accuracy of a test result is effectively improved.
Description
Technical Field
The invention relates to the field of research on dynamic mechanical properties of materials, in particular to a support device for a Hopkinson pressure bar.
Background
The material will have high strain rate behavior under the load action of explosion, impact and the like, and the separated Hopkinson pressure bar device is widely applied in order to research the dynamic mechanical property of the material under the high strain rate. With the popularization of test devices, how to make the test result effective and reliable becomes an important problem in the application process.
At present, the separated Hopkinson pressure bar is mainly used for carrying out an impact compression test. When the dynamic compression mechanical property of the material is tested, a cylindrical test piece is placed between an incident rod and a transmission rod, and the incident rod, the transmission rod and the test piece are required to have the same diameter and be concentric. The bullet is struck by impact air pressure, so that the bullet impacts the incident rod at a certain impact rate, incident stress waves are generated in the incident rod, the test piece is deformed at a high strain rate, and the incident stress waves return reflected stress waves to the incident rod and transmit the transmitted stress waves to the transmission rod on an interface between the incident rod and the test piece. Stress wave information is collected by strain gauges adhered to the surfaces of the incident rod and the transmission rod and is guided into the ultra-dynamic strain gauge and the waveform memory, and finally, analysis is carried out by a data processing system. The existing Hopkinson pressure bar mainly has the following defects and limitations in the test process:
in order to reduce the end face friction effect, Vaseline or molybdenum disulfide needs to be smeared on a contact interface between an incident rod and a test piece and a contact interface between a transmission rod and the test piece when the test piece is installed, the test piece can slowly slide down after being installed due to the action of lubrication and gravity, so that the test piece is dislocated, the three parts of the incident rod, the transmission rod and the test piece are not concentric, and the test result is easily influenced.
Disclosure of Invention
In order to overcome the defects of the existing Hopkinson pressure bar in the test process, the invention provides a support device of the Hopkinson pressure bar, which is used for supporting a test piece before impact and collecting fragments after impact so as to improve the accuracy of a test result.
In order to solve the above problems, the present invention provides a support device for a hopkinson pressure bar, comprising:
fragment collection structures and specimen support structures; the fragment collection structure includes: a collection box; the test piece supporting structure is arranged in the collecting box; the specimen support structure includes: the device comprises a supporting component, an up-down adjusting component and a left-right adjusting component;
the supporting component is arranged on the left-right adjusting component through the up-down adjusting component; the two opposite sides of the collecting box are provided with Hopkinson bar preformed holes which correspond to and are coaxial with the test pieces placed on the supporting component.
Further, the fragment collection structure further comprises: a collection box; the bottom of the collecting box is provided with a guide plate which is obliquely arranged, and the collecting box is positioned on the edge of the lowest point of the guide plate.
Furthermore, a latex layer is fixed on the inner wall of the collecting box.
Furthermore, one side of the collecting box is provided with a box door for opening and closing, and the box door is provided with an observation window.
Further, the up-down adjustment assembly includes: the adjusting device comprises an upper adjusting rod, a lower adjusting rod and an upper adjusting knob for adjusting the length of the upper adjusting rod and the lower adjusting rod; the upper and lower adjusting knobs are arranged on the upper and lower adjusting rods, and the upper and lower adjusting rods are connected between the supporting component and the left and right adjusting components.
Further, the left-right adjustment assembly includes: the left and right adjusting knobs are used for adjusting the left and right adjusting rods to move left and right relative to the support along the axial direction; the left and right adjusting rods are movably arranged on the support, the left and right adjusting knobs are arranged on the left and right adjusting rods, and the upper and lower adjusting rods are arranged on the left and right adjusting rods.
Furthermore, the number of the brackets is two, namely a first bracket and a second bracket; the left-right adjustment assembly further comprises: a resilient element and a catch disc; the left and right adjusting rod is sequentially provided with the left and right adjusting knobs, the first bracket, the elastic element, the baffle disc and the second bracket from left to right; and a thread section is arranged at one end of the left and right adjusting rods, which is sleeved on the first support.
Further, the support assembly includes: a support table and a support body; the support body is arranged on the upper and lower adjusting rods through the supporting platform.
Furthermore, a wedge-shaped groove for fixing the support body is reserved in the support platform.
Furthermore, the support body is a trapezoidal table with a wide upper part and a narrow lower part, and the top of the trapezoidal table is provided with an arc surface for bearing a test piece.
According to the support device for the Hopkinson pressure bar, the test piece support structure is arranged in the fragment collection structure, the concentricity of the test piece with the incident bar and the transmission bar can be adjusted through the up-down adjusting assembly and the left-right adjusting assembly, the support and the adjustment of the test piece are completed, and the dislocation of the test piece, the incident bar and the transmission bar is prevented. Meanwhile, the invention can also utilize the collecting box to collect the fragments after the impact, thus effectively improving the accuracy of the test result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a support device of a hopkinson pressure bar according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a collecting box provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a bracket according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a support stage according to an embodiment of the present invention;
description of reference numerals: 1. a base; 2. a support; 3. a left adjusting rod and a right adjusting rod; 4. a left and right adjusting knob; 5. an elastic element; 6. a catch tray; 7. an upper and lower adjusting rod; 8. an up-down adjusting knob; 9. a support table; 10. a support body; 11. a test piece; 12. a collection box; 13. a guide plate; 14. a latex layer; 15. a collection box; 16. an observation window; 17. a pillar; 18. an oval screw hole; 19. a wedge-shaped groove; 20. reserving a hole on the Hopkinson bar; 21. a box door; 22. a support assembly; 23. an up-down adjustment assembly; 24. and a left and right adjustment assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment of the present invention provides a support device for a hopkinson pressure lever, as shown in fig. 1, the support device for a hopkinson pressure lever includes:
fragment collection structures and specimen support structures; the fragment collection structure includes: a collection tank 12; the collecting box 12 can be designed into a cuboid, and the material can be made of bulletproof glass. The specimen support structure is mounted within the collection bin 12, i.e. all the structure for support is located within the fragment collection structure.
Wherein, test piece bearing structure includes: a support assembly 22, an up-down adjustment assembly 23, and a left-right adjustment assembly 24. The supporting component 22 is mounted on the left and right adjusting component 24 through the up-down adjusting component 23, the up-down adjusting component 23 is used for adjusting the vertical height of the test piece 11 placed on the supporting component 22, and the left and right adjusting component 24 is used for adjusting the horizontal position of the test piece 11 placed on the supporting component 22. The relative both sides of collecting box 12 are equipped with and correspond and coaxial hopkinson pole preformed hole 20 with the test piece of placing on the supporting component 22, generally are the round hole, and the aperture of hopkinson pole preformed hole 20 slightly is greater than the hopkinson pole footpath, and the hopkinson pole preformed hole 20 of collecting box 12 one side is used for setting up the pole of inciting, and the hopkinson pole preformed hole 20 of collecting box 12 opposite side is used for setting up the transmission pole.
In the process of testing by using the support device of the Hopkinson pressure bar, the support device of the Hopkinson pressure bar is placed at the installation position of the test piece 11 and is fixed on the test platform. Then, the test piece 11 is mounted on the support assembly 22, an incident rod is arranged in the Hopkinson bar preformed hole 20 on one side of the collection box 12, a transmission rod is arranged in the Hopkinson bar preformed hole 20 on the other side of the collection box, and the test piece 11 is adjusted to be concentric with the incident rod and the transmission rod. The horizontal position of the test piece 11 is adjusted through the left-right adjusting component 24, and the supporting component 22 is just contacted with the test piece 11 through the up-down adjusting component 23 after the horizontal position is adjusted. At this time, the test piece 11 may have slip-down dislocation, the test piece 11 needs to be adjusted to be concentric with the incident rod and the transmission rod again, then the supporting component 22 is lifted to be just in contact with the test piece 11 again, the supporting operation of the test piece 11 is completed, and the impact test can be performed next. After the impact test, the test piece 11 splashes under the impact action, and the collection box 12 can effectively collect all fragments.
It should be noted that, in order to facilitate the control of the position of the support device of the hopkinson pressure bar, a chute may be disposed on the test platform, and the support device of the hopkinson pressure bar is fixed on the chute of the test platform so as to adjust the position through the chute.
According to the support device for the Hopkinson pressure bar provided by the embodiment of the invention, the test piece support structure is arranged in the fragment collection structure, and the concentricity of the test piece, the incident bar and the transmission bar can be adjusted through the up-down adjusting assembly and the left-right adjusting assembly, so that the support and the adjustment of the test piece are completed, and the dislocation of the three components is prevented. Meanwhile, the invention can also utilize the collecting box to collect the fragments after the impact, thus effectively improving the accuracy of the test result.
Fractal dimension is a quantitative index for studying the distribution of broken particle size. In order to calculate the fractal dimension, the fragments of the test piece after impact need to be collected, then a high-frequency vibrating screen machine is adopted for grading screening and weighing, and finally the fragments are substituted into a formula to obtain the fractal dimension. Currently, the fragment collection device is mainly a plastic box, which covers the specimen, and this method has two disadvantages: firstly, after each impact, the incident rod and the reflection rod are drawn out of the box, the plastic box is taken down to pour out test piece fragments, and the test piece fragments are placed on the test bed again, so that time and labor are wasted; secondly, the fragments of the test piece after high-speed impact can splash outwards and impact the inner wall of the plastic box again to cause secondary crushing, so that the calculation result of the fractal dimension is seriously influenced.
As shown in figure 1, to solve the above problem, it is avoided that the collecting chamber 12 is repeatedly opened and tipped over. The fragment collection structure further comprises: a collection box 15. The bottom of the collecting box 15 is provided with a guide plate 13 which is obliquely arranged, the guide plate 13 is obliquely arranged on the base 1, and the collecting box 15 is positioned at the edge of the lowest point of the guide plate 13. For easy disassembly and collection, the collecting box 15 is movably mounted at the bottom of the guide plate 13, and the collecting box 15 is bent inward to prevent fragments from falling into a gap between the collecting box 15 and the guide plate 13.
In order to avoid secondary crushing caused by fragment splashing after collision, the latex layer 14 can be fixed on the inner wall of the collecting box 12 to achieve a damping effect.
As shown in fig. 2, the collection box 12 is provided at one side thereof with a door 21 for opening and closing, generally a front side. In order to perform the test piece 11 supporting operation and to take and place the collecting box 15. Meanwhile, in order to observe the impact process of the test piece 11, an observation window 16 may be disposed on the box door 21, and the latex layer 14 may not be fixed to the inner wall corresponding to the observation window 16.
In this embodiment, the up-down adjusting assembly 23 includes: an up-down adjusting rod 7 and an up-down adjusting knob 8 for adjusting the length of the up-down adjusting rod 7. The up-down adjusting knob 8 is installed on the up-down adjusting lever 7, and the up-down adjusting lever 7 is connected between the supporting member 22 and the left-right adjusting member 24. Wherein, the up-down adjusting rod 7 comprises an outer rod and at least one layer of inner rod, and one end of the inner rod is inserted into the outer rod. The upper and lower adjusting knobs 8 are connected to the outer rod and the inner rod at the same time and used for adjusting the relative positions of the outer rod and the inner rod, so that the length of the whole upper and lower adjusting rods 7 can be adjusted.
Wherein, left right regulating assembly 24 includes: the left and right adjusting rods 3 and the left and right adjusting knobs 4 are used for adjusting the left and right adjusting rods 3 to move left and right relative to the support 2 along the axial direction. The left and right adjusting rods 3 are movably arranged on the bracket 2, and the left and right adjusting knobs 4 are arranged on the left and right adjusting rods 3. For adjustment, the lower ends of the up-down adjusting rods 7 are generally fixed to the middle of the left-right adjusting rods 3.
As shown in fig. 3, two supports 2 are provided, which are a first support and a second support respectively, two sets of supports 2 are fixed at two ends of the base 1, the lower part of each set of supports 2 is supported by two pillars 17, and an oval screw hole 18 is reserved at the upper part. Left-right adjustment assembly 24 further includes: a resilient element 5 and a catch disk 6. The elastic element 5 may be a spring. The left and right adjusting rod 3 is sequentially provided with a left and right adjusting knob 4, a first support, an elastic element 5, a baffle disc 6 and a second support from left to right, namely, the left and right adjusting knob 4 is installed on the outer side of the first support, the elastic element 5 is sleeved on the inner side of the first support, the baffle disc 6 is arranged between the first support and the second support, and the elastic element 5 is in a semi-compression state. The left and right adjusting rods 3 are provided with thread sections at one ends sleeved with the first supports, and the left and right adjusting rods 3 can be controlled to move through the left and right adjusting knobs 4. Correspondingly, the end of the left and right adjusting rod 3, which is sleeved on the second bracket, is not provided with a threaded section, and the end without the threaded section can freely slide.
Wherein, the supporting component includes: a support table 9 and a support body 10. The support body 10 is mounted on the up-down adjusting lever 7 via a support base 9. The supporter 10 is disposable supporter, adopts the gypsum brittle material that easily breaks, and the shape is narrow trapezoidal platform about the width, and the shape of trapezoidal platform is type of trapezoidally, and thickness is 4mm, and the top of trapezoidal platform is equipped with the cambered surface that is used for bearing test piece 11, and test piece 11 can be placed on the cambered surface of disposable supporter. As shown in fig. 4, a wedge-shaped groove 19 for fixing the support body 10 is reserved in the support table 9. The disposable support is mounted in a wedge-shaped recess 19 provided in the support table 9.
In the process of testing by using the support device of the Hopkinson pressure bar, the support device of the Hopkinson pressure bar is placed at the installation position of the test piece 11 and is fixed on the test platform. Test piece 11 is then mounted on the support assembly. Then, a test piece 11 is installed on the supporting assembly, an incident rod is arranged in a Hopkinson bar preformed hole 20 on one side of the collecting box 12, a transmission rod is arranged in a Hopkinson bar preformed hole 20 on the other side of the collecting box, and the test piece 11 is adjusted to be concentric with the incident rod and the transmission rod. Then the supporting body 10 is inserted into the wedge-shaped groove 19 of the supporting platform 9, the position of the supporting body is finely adjusted through the left and right adjusting knobs 4, when the left and right adjusting knobs 4 are screwed, the elastic elements 5 are compressed, the left and right adjusting rods 3 move leftwards under the action of threads, when the left and right adjusting knobs 4 are unscrewed, the elastic elements 5 are released, the left and right adjusting rods 3 move rightwards under the action of the elastic elements 5, and the cross section of the left and right adjusting rods 3 is in an ellipse-like shape, so that the left and right adjusting rods 3 only horizontally move leftwards and rightwards without rotating, and the parts above the left and right adjusting rods are. Then the support body 10 is lifted to be just contacted with the test piece 11 through the upper and lower adjusting knobs 8, at the moment, the test piece 11 possibly slides downwards and is dislocated, the test piece 11 needs to be adjusted to be concentric with the incident rod and the transmission rod again, then the support body 10 is lifted to be just contacted with the test piece 11 again, the test piece supporting operation is completed, and the impact test can be carried out on the next step. After the impact test, the test piece 11 splashes under the impact action, the emulsion layer 14 on the inner wall of the collecting box plays a role in shock absorption, and secondary crushing of fragments is avoided; most fragments directly slide into the collecting box 15 from the box bottom guide plate 13 under the action of gravity, and a small part of fragments blocked by the collecting box 12 can be cleaned into the collecting box 15 through a small brush, so that the collecting box 12 is prevented from being moved for each test. Finally, the box door 21 is opened, and the collecting box 15 is drawn out, so that the fragment collecting operation can be completed.
In summary, in the supporting device for the hopkinson pressure bar provided by the embodiment of the invention, the specimen supporting structure is arranged in the fragment collecting structure, and the specimen can be adjusted to be concentric with the incident rod and the transmission rod through the up-down adjusting assembly and the left-right adjusting assembly, so that the specimen is supported and adjusted, and the dislocation of the specimen, the incident rod and the transmission rod is prevented. Meanwhile, the invention can also utilize the collecting box to collect the fragments after the impact, thus effectively improving the accuracy of the test result. The emulsion layer of collecting box can effectively prevent the fragment that splashes after the striking from taking place the secondary crushing, has improved the accuracy of fractal dimension calculation, helps better research broken particle size distribution rule. The guide plate design of the collecting box can enable fragments to slide into the fragment collecting box at the bottom of the box under the action of gravity, meanwhile, the collecting box in a drawable design can simplify fragment collecting procedures, the collecting box is prevented from being moved in each test, test time is greatly shortened, and test efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A support arrangement for Hopkinson pressure bar, comprising:
fragment collection structures and specimen support structures; the fragment collection structure includes: a collection box; the test piece supporting structure is arranged in the collecting box; the specimen support structure includes: the device comprises a supporting component, an up-down adjusting component and a left-right adjusting component;
the supporting component is arranged on the left-right adjusting component through the up-down adjusting component; the two opposite sides of the collecting box are provided with Hopkinson bar preformed holes which correspond to and are coaxial with the test pieces placed on the supporting component.
2. The support device of a hopkinson strut of claim 1, wherein the fragment collection structure further comprises: a collection box; the bottom of the collecting box is provided with a guide plate which is obliquely arranged, and the collecting box is positioned on the edge of the lowest point of the guide plate.
3. The apparatus of claim 2, wherein a latex layer is fixed on the inner wall of the collection box.
4. The support device for a Hopkinson pressure bar as recited in claim 2, wherein a box door for opening and closing is provided on one side of said collection box, and said box door is provided with an observation window.
5. The support device of a hopkinson strut of claim 1, wherein the up-down adjustment assembly comprises: the adjusting device comprises an upper adjusting rod, a lower adjusting rod and an upper adjusting knob for adjusting the length of the upper adjusting rod and the lower adjusting rod; the upper and lower adjusting knobs are arranged on the upper and lower adjusting rods, and the upper and lower adjusting rods are connected between the supporting component and the left and right adjusting components.
6. The support device of a hopkinson strut of claim 5, wherein said left and right adjustment assembly comprises: the left and right adjusting knobs are used for adjusting the left and right adjusting rods to move left and right relative to the support along the axial direction; the left and right adjusting rods are movably arranged on the support, the left and right adjusting knobs are arranged on the left and right adjusting rods, and the upper and lower adjusting rods are arranged on the left and right adjusting rods.
7. The support device of Hopkinson pressure bar as recited in claim 6, wherein there are two said brackets, a first bracket and a second bracket; the left-right adjustment assembly further comprises: a resilient element and a catch disc; the left and right adjusting rod is sequentially provided with the left and right adjusting knobs, the first bracket, the elastic element, the baffle disc and the second bracket from left to right; and a thread section is arranged at one end of the left and right adjusting rods, which is sleeved on the first support.
8. The support device of a Hopkinson pressure bar as recited in claim 5, wherein said support assembly comprises: a support table and a support body; the support body is arranged on the upper and lower adjusting rods through the supporting platform.
9. The support device for a hopkinson press bar of claim 8, wherein a wedge-shaped groove for fixing the support body is reserved in the support table.
10. The support device of the Hopkinson pressure bar as recited in claim 8, wherein the support body is a trapezoidal table with a wide upper part and a narrow lower part, and an arc surface for bearing a test piece is arranged at the top of the trapezoidal table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464040.7A CN111504770A (en) | 2020-05-27 | 2020-05-27 | Support arrangement for hopkinson depression bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464040.7A CN111504770A (en) | 2020-05-27 | 2020-05-27 | Support arrangement for hopkinson depression bar |
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| CN111504770A true CN111504770A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010464040.7A Pending CN111504770A (en) | 2020-05-27 | 2020-05-27 | Support arrangement for hopkinson depression bar |
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Cited By (1)
| 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 |
-
2020
- 2020-05-27 CN CN202010464040.7A patent/CN111504770A/en active Pending
Cited By (1)
| 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 |
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