CN216410913U - Shearing experiment system for metal material under different axial force loading conditions - Google Patents
Shearing experiment system for metal material under different axial force loading conditions Download PDFInfo
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- CN216410913U CN216410913U CN202122619299.7U CN202122619299U CN216410913U CN 216410913 U CN216410913 U CN 216410913U CN 202122619299 U CN202122619299 U CN 202122619299U CN 216410913 U CN216410913 U CN 216410913U
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- 238000010008 shearing Methods 0.000 title claims abstract description 94
- 239000007769 metal material Substances 0.000 title claims abstract description 41
- 238000002474 experimental method Methods 0.000 title claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 230000003068 static effect Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
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- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of mechanical property testing of metal materials, and provides a shearing-resistant experimental system of a metal material under different axial force loading conditions. The stretching loading device comprises a clamping tool, a stretching loading oil cylinder and a stretching static force sensor. The clamping tool comprises a front clamping part and a rear clamping part. The shearing device comprises a shearing pressure head, a shearing static force sensor, a shearing loading oil cylinder and a shearing support. The shearing support is provided with a guide channel which is used for matching the shearing pressure head to move up and down. The utility model comprises a stretching loading device and a shearing device, and can be used for developing an experiment under the double acting forces of axial stretching and radial shearing according to the stress state of the metal material in practical application, so that the damage result of the metal material sample under the double acting forces of axial stretching and longitudinal shearing can be obtained.
Description
Technical Field
The utility model belongs to the technical field of mechanical property testing of metal materials, and particularly relates to a shearing-resistant experiment system of a metal material under different axial force loading conditions.
Background
The metal material is widely applied to infrastructure construction and industry, has important significance for mechanical property test of the metal material, takes the metal material widely applied to manufacturing anchor rods as an example, and is used as a main component of a side slope and tunnel engineering supporting structure, and the performance of the anchor rods is directly related to the safety and the service life of the whole engineering. In order to ensure the physical properties of the metal material in use, the metal material needs to be tested for mechanical properties by simulating the tensile and shear tests under actual working conditions.
When mechanical properties of metal materials are tested, tensile and shear tests are generally carried out on the metal materials respectively, only axial load is applied in the tensile tests, and the characteristics of the metal materials such as elastic limit, elongation, elastic modulus, proportional limit, tensile strength, yield point, yield strength and the like under different axial force conditions are tested; in the shear test only a longitudinal shear force was applied to test the shear characteristics. However, in practical engineering, the metal material is not only pulled and sheared independently, but also generally has dual acting forces of axial stretching and longitudinal shearing, and the state of the metal material in practical engineering cannot be simulated really through a single stretching experiment and a single shearing experiment.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a shearing test system for a metal material under different axial force loading conditions, so that the state of the metal material in the actual working condition is simulated completely, and the mechanical property and the damage process of the metal material under the double actions of axial stretching and longitudinal shearing are detected.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the shear-resisting experiment system for the metal material under different axial force loading conditions comprises a rack, a tensile loading device and a shearing device, wherein the tensile loading device and the shearing device are assembled on the rack;
the tensile loading device comprises:
the clamping tool comprises a front clamping part and a rear clamping part which are horizontally distributed at intervals;
the tensile loading oil cylinder is connected with the tail part of the front clamping part through a piston rod so as to apply axial tensile force to the sample;
the stretching static force sensor is fixedly connected with the tail part of the rear clamping part so as to record the stretching force borne by the sample in real time;
the shearing apparatus includes:
a shear ram located above a gap between the front and rear jaws;
the shearing static force sensor is connected with the upper part of the shearing pressure head so as to record the shearing force born by the sample in real time;
the shearing loading oil cylinder is connected with the upper part of the shearing static force sensor so as to apply radial shearing force to the sample;
the shearing support, the shearing support set firmly in the frame, the upper portion of shearing the support is located preceding clamping part with between the back clamping part to enclose jointly and close the space of placing that forms and be used for placing the sample, the shearing support have with place the direction passageway of space intercommunication, be used for the cooperation the shearing pressure head reciprocates.
Preferably, the shearing support comprises two L-shaped plates which jointly enclose to form the guide channel;
and the upper parts of the two L-shaped plates are correspondingly provided with first notches which are matched with the test sample and have upward openings.
Preferably, the central axis of the shear ram perpendicularly intersects the central axis of the sample.
Preferably, the shearing pressure head comprises a T-shaped block, a bulge is fixedly arranged on the upper end face of the T-shaped block, the shearing static force sensor is fixedly connected with the bulge, and a second notch which is matched with the sample and has a downward opening is formed in the lower end part of the T-shaped block.
Preferably, the second notch is a circular arch notch, and the protrusion is a cylindrical protrusion.
Preferably, the rack comprises:
a base;
the supporting table is fixedly arranged above the base through an upright post, and the shearing loading oil cylinder is fixedly assembled on the supporting table;
the workbench is fixedly connected with the base and located in a gap between the base and the supporting table, a U-shaped mounting seat is fixedly arranged on the workbench, the rear clamping portion is fixedly assembled on one side wall of the mounting seat, the tensile loading oil cylinder is fixedly assembled on the other side wall of the mounting seat, and the shearing support is fixed on the bottom wall of the mounting seat.
Preferably, the loading modes of the tension loading oil cylinder and the shear loading oil cylinder comprise constant stress loading at different gears and constant speed loading at different gears.
Preferably, the shear testing system further comprises a monitoring system comprising an infrared sensor to measure an image of the thermal energy change of the specimen when it is sheared in tension, the infrared sensor being located at the specimen position.
Preferably, the monitoring system further comprises a high speed camera positioned adjacent the specimen to microscopically record the experimental process.
Preferably, the frame is a steel frame.
Has the advantages that: the utility model comprises a stretching loading device and a shearing device, and can be used for developing an experiment under the double acting forces of axial stretching and radial shearing according to the stress state of the metal material in practical application, so that the damage result of the metal material sample under the double acting forces of axial stretching and longitudinal shearing can be obtained.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. Wherein:
FIG. 1 is a schematic perspective view of a shear test system according to an embodiment of the present invention;
FIG. 2 is a front view of a shear test system according to an embodiment of the present invention;
FIG. 3 is a left side view of a shear test system in an embodiment of the present invention;
FIG. 4 is a right side view of a shear test system in an embodiment of the present invention;
FIG. 5 is a schematic structural view of a shear support in an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a shear ram in an embodiment of the present invention;
figure 7 is a side view of a shear ram in an embodiment of the present invention.
Description of reference numerals: 101. a support table; 102. base, 2, upright post; 3. shearing a loading oil cylinder; 4. a shear static force sensor; 5. shearing a pressure head; 6. a tensile static force sensor; 7. a rear clamping portion; 8. cutting the support; 9. a front clamping portion; 10. a piston rod; 11. stretching the loading oil cylinder; 12. a work table; 13. a mounting seat; 501. a T-shaped block; 502. a second notch; 503. a protrusion; 801. an L-shaped plate; 802. a first notch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in FIGS. 1-7, a shear test system for metal materials under different axial force loading conditions comprises a frame, a tensile loading device and a shearing device, wherein the tensile loading device and the shearing device are assembled on the frame.
The tensile loading device comprises: the clamping tool comprises a front clamping part 9 and a rear clamping part 7 which are horizontally distributed at intervals; the tensile loading oil cylinder 11 is connected with the tail part of the front clamping part 9 through a piston rod 10 so as to apply axial tensile force to the sample; tensile static force sensor 6, tensile static force sensor 6 links firmly with the afterbody of back clamping part 7 to the tensile force that the real-time recording sample bore.
The shearing device comprises: a shear ram 5, the shear ram 5 being located above a gap between the front 9 and rear 7 clamping portions; the shearing static force sensor 4 is connected with the upper part of the shearing pressure head 5 so as to record the shearing force born by the sample in real time; the shearing loading oil cylinder 3 is connected with the upper part of the shearing static force sensor 4 so as to apply radial shearing force to the sample; cut support 8, cut support 8 and set firmly in the frame, cut the upper portion of support 8 and be located between preceding clamping part 9 and the back clamping part 7 to enclose jointly and close the space of placing that forms and be used for placing the sample, cut the below that support 8 is located the sample, cut support 8 have with place the direction passageway of space intercommunication for the cooperation is cut pressure head 5 and is reciprocated. The shearing support 8 is used for fixing two sides of a shearing position of the sample, so that the shearing pressure head 5 can apply shearing force on the preset position of the sample conveniently.
When the shearing-resistant experiment system is used, the metal material samples are rod bodies with different diameters and different lengths. The metal material sample is fixed between the clamping tool and the shearing support 8. The shear ram 5 can be replaced as required by the experiment.
In another alternative embodiment of the present invention, as shown in fig. 5, the shear support 8 comprises two L-shaped plates 801, the two L-shaped plates 801 together enclosing a guide channel; the upper parts of the two L-shaped plates are correspondingly provided with first notches 802 which are matched with the test sample and have upward openings. Through setting up first breach 802, can increase the area of contact of sample and shear support 8, be the face contact between the two to can play better supporting role.
The cross-sectional shape of the first notch 802 is a circular arc having an angle of not more than 180 degrees, preferably an angle of 180 degrees, i.e., the cross-sectional shape of the first notch 802 is a semicircle.
In some embodiments of the present invention, shear support 8 may also be a unitary structure; for example, the shearing support 8 is provided with a guide groove matched with the shearing pressure head, the opening of the guide groove faces upwards, and the guide groove forms a guide channel.
In some embodiments of the utility model, the upper end face of the shear support 8 is in direct contact with the sample, with a line contact between the two.
In another alternative embodiment of the utility model, the central axis of the shear ram 5 intersects the central axis of the sample perpendicularly.
As shown in fig. 6-7, the shearing ram 5 includes a T-shaped block 501, the upper portion of the T-shaped block 501 is square, the lower portion is rectangular, and the connection portion of the two is formed by a triangular block. The center of the upper end face of the T-shaped block 501 is fixedly provided with a protrusion 503, the shearing static force sensor 4 is fixedly connected with the protrusion 503, and the lower end of the T-shaped block is provided with a second notch 502 which is matched with the sample and has a downward opening. The connection to the shear static force sensor may be facilitated by the provision of a projection 503 at the uppermost end of the shear ram 5. The projection 503 is a cylindrical projection. The second notch 502 is a dome-shaped notch. When the test sample is used, the test sample is placed in the circular arch notch, the shearing force is applied to the test sample through the circular arch notch, and circular arches with different sizes and pressure heads with different thicknesses can be manufactured according to the specification of the test sample and the experimental requirements.
In other embodiments, the shear static force sensor 4 may also be fixedly connected directly to the upper end face of the T-block.
In other embodiments, the protrusion 503 may also be a square pillar shaped protrusion.
In other embodiments, the cross-sectional shape of the second notch 502 may also be semi-circular.
In another alternative embodiment of the utility model, the rack comprises: a base 102; the supporting platform 101 is fixedly arranged above the base 102 through the upright column 2, a certain distance is reserved between the supporting platform 102 and the base 101, and the shearing loading oil cylinder 3 is fixedly assembled on the supporting platform 101; the workbench 12 is fixedly connected with the base 102, the workbench 12 is located in a gap between the base 102 and the supporting platform 101, the workbench 12 is fixedly provided with a U-shaped mounting seat 13, the rear clamping portion 7 is fixedly assembled on one side wall of the mounting seat 13, the tensile loading oil cylinder 11 is fixedly assembled on the other side wall of the mounting seat 13, and the shearing support 8 is fixed on the bottom wall of the mounting seat 13. There are 4 columns 2, evenly distributed around the support table 101.
In another alternative embodiment of the present invention, the loading modes of the tensile loading cylinder 11 include constant stress loading at different gears and constant speed loading at different gears.
In another optional embodiment of the present invention, the shear loading cylinder 3 is a servo cylinder, and the loading manner of the shear loading cylinder 3 includes constant stress loading at different gears and constant speed loading at different gears.
In another alternative embodiment of the present invention, the maximum tension applied by the tension loading cylinder 11 is 2000 kN. The test force is not graded, real-time display is realized, and the control precision is high.
In another alternative embodiment of the utility model the maximum working stroke of the piston rod 10 is 1000 mm.
In another alternative embodiment of the present invention, the shear testing system further comprises a monitoring system comprising an infrared sensor to measure an image of the thermal energy change of the specimen when it is under tension in shear, the infrared sensor being located at the specimen position.
In another alternative embodiment of the utility model, the monitoring system further comprises a high speed camera positioned adjacent the specimen to microscopically record the experimental process.
Because the infrared sensor and the high-speed camera monitor the change of the sample in the stress process, the infrared sensor and the high-speed camera are arranged right in front of the sample, and the visual angle of the infrared sensor and the high-speed camera is ensured to cover the sample.
In another optional embodiment of the utility model, the rack is a steel rack, and has stable material performance, good compression resistance and neat and attractive appearance.
The working principle of the utility model is as follows: the front clamping part 9 and the rear clamping part 7 clamp two end parts of the sample, the piston rod 10 drives the front clamping part 9 to move along the axial direction of the sample, and the shearing loading oil cylinder 3 drives the shearing pressure head 5 to move along the radial direction of the sample, so that the damage result of the sample under the double actions of axial stretching and radial shearing can be obtained.
In conclusion, according to the stress state of the metal material in practical application, the utility model can independently control the loading modes of the stretching force and the shearing force, can respectively select the constant force loading or constant speed loading rate of the stretching force and the shearing force, and can be used for developing the test under the double acting force of the axial stretching and the radial shearing, thereby realizing the free combination of the stretching force and the shearing force in different states. Meanwhile, the shear failure strength of the metal material sample to be detected in the axial stretching force can be accurately obtained by adding auxiliary detection such as an infrared sensor and a high-speed camera, the relation between the shear failure strength value and the axial stretching force value can be accurately obtained, a heat energy change image and a microscopic experiment process of the metal material sample under the dual acting force of the axial stretching and the radial shearing can be obtained, and the failure result of the metal material sample under the dual acting force of the axial stretching and the radial shearing can be obtained by the loading mode.
It should be understood that the above description is only exemplary, and the embodiments of the present invention do not limit the present invention.
The above description is only exemplary of the utility model and should not be taken as limiting the utility model, as any modification, equivalent replacement, or improvement made within the spirit and principle of the utility model is intended to be covered by the appended claims.
Claims (10)
1. The shear-resisting experiment system for the metal material under different axial force loading conditions is characterized by comprising a rack, a tensile loading device and a shearing device, wherein the tensile loading device and the shearing device are assembled on the rack;
the tensile loading device comprises:
the clamping tool comprises a front clamping part and a rear clamping part which are horizontally distributed at intervals;
the tensile loading oil cylinder is connected with the tail part of the front clamping part through a piston rod so as to apply axial tensile force to the sample;
the stretching static force sensor is fixedly connected with the tail part of the rear clamping part so as to record the stretching force borne by the sample in real time;
the shearing apparatus includes:
a shear ram located above a gap between the front and rear jaws;
the shearing static force sensor is connected with the upper part of the shearing pressure head so as to record the shearing force born by the sample in real time;
the shearing loading oil cylinder is connected with the upper part of the shearing static force sensor so as to apply radial shearing force to the sample;
the shearing support, the shearing support set firmly in the frame, the upper portion of shearing the support is located preceding clamping part with between the back clamping part to enclose jointly and close the space of placing that forms and be used for placing the sample, the shearing support have with place the direction passageway of space intercommunication, be used for the cooperation the shearing pressure head reciprocates.
2. The system for testing the shearing resistance of the metal material under the loading condition of different axial forces as claimed in claim 1, wherein the shearing support comprises two L-shaped plates which together enclose the guide channel;
and the upper parts of the two L-shaped plates are correspondingly provided with first notches which are matched with the test sample and have upward openings.
3. The shear test system for metal materials under different axial force loading conditions according to claim 1, wherein the central axis of the shear ram perpendicularly intersects the central axis of the test specimen.
4. The metal material shearing test system under different axial force loading conditions according to claim 3, wherein the shearing pressure head comprises a T-shaped block, a protrusion is fixedly arranged on the upper end face of the T-shaped block, the shearing static force sensor is fixedly connected with the protrusion, and a second notch which is matched with the sample and has a downward opening is formed in the lower end portion of the T-shaped block.
5. A metal material shear test system under different axial force loading conditions according to claim 4, wherein the second notch is a dome-shaped notch, and the protrusion is a cylindrical protrusion.
6. A shear test system for metal materials under different axial force loading conditions according to claim 1, wherein the frame comprises:
a base;
the supporting table is fixedly arranged above the base through an upright post, and the shearing loading oil cylinder is fixedly assembled on the supporting table;
the workbench is fixedly connected with the base and located in a gap between the base and the supporting table, a U-shaped mounting seat is fixedly arranged on the workbench, the rear clamping portion is fixedly assembled on one side wall of the mounting seat, the tensile loading oil cylinder is fixedly assembled on the other side wall of the mounting seat, and the shearing support is fixed on the bottom wall of the mounting seat.
7. The metal material shear test system under different axial force loading conditions according to claim 1, wherein the loading modes of the tensile loading oil cylinder and the shear loading oil cylinder comprise constant stress loading at different speeds and constant speed loading at different speeds.
8. A shear test system for metal materials under different axial force loading conditions according to claim 1, further comprising a monitoring system including an infrared sensor to measure an image of the thermal energy change of the specimen when it is under tension in shear, the infrared sensor being located at the specimen position.
9. A shear testing system for metal materials under different axial force loading conditions according to claim 8, wherein said monitoring system further comprises a high speed camera positioned adjacent to the specimen to microscopically record the testing process.
10. A shear test system for metal materials under different axial force loading conditions according to any one of claims 1 to 9, wherein the machine frame is a steel machine frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619299.7U CN216410913U (en) | 2021-10-28 | 2021-10-28 | Shearing experiment system for metal material under different axial force loading conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619299.7U CN216410913U (en) | 2021-10-28 | 2021-10-28 | Shearing experiment system for metal material under different axial force loading conditions |
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| Publication Number | Publication Date |
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| CN216410913U true CN216410913U (en) | 2022-04-29 |
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| CN202122619299.7U Active CN216410913U (en) | 2021-10-28 | 2021-10-28 | Shearing experiment system for metal material under different axial force loading conditions |
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- 2021-10-28 CN CN202122619299.7U patent/CN216410913U/en active Active
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