CN213239771U - Device for testing elastic statics parameter in equivalent plane of lattice material - Google Patents
Device for testing elastic statics parameter in equivalent plane of lattice material Download PDFInfo
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- CN213239771U CN213239771U CN202120805092.6U CN202120805092U CN213239771U CN 213239771 U CN213239771 U CN 213239771U CN 202120805092 U CN202120805092 U CN 202120805092U CN 213239771 U CN213239771 U CN 213239771U
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Abstract
A device for testing elastic statics parameters in an equivalent plane of a lattice material comprises a top end fixing platform, a rigid flat plate, a guide structure, a force transmission column, a measuring rod, a fixed scale platform, a fixed support, a connecting rod, a sliding block, a weight supporting and hanging structure and weights; the middle part of the connecting rod is hinged with the top of the fixed support, the left end of the connecting rod is connected with the upper end of the weight supporting and hanging structure, and the weight is arranged on the weight supporting and hanging structure; the right end of the connecting rod is hinged with the lower end of the force transmission column, a rigid flat plate is arranged above the force transmission column, a top end fixing table is arranged above the rigid flat plate, and scale marks are marked on the top end fixing table and/or the rigid flat plate; the right end of the connecting rod is also hinged with the upper end of the measuring rod, and a fixed scale table is arranged beside the measuring rod; the connecting rod is also provided with a sliding block; the periphery of the force transmission column is provided with a guide structure. The utility model provides a solve in the dot matrix material face when the equivalent statics parameter, lack the problem that the experimental data supported.
Description
Technical Field
The utility model belongs to the technical field of dot matrix sandwich layer and sandwich board physical properties measure, concretely relates to dot matrix material equivalent in-plane elasticity statics parameter testing arrangement.
Background
The lattice material is used as a periodic porous structure, and has the excellent performances of light weight, high strength, high rigidity, high energy absorption rate and the like due to the structural particularity. The existing research mainly explores the performance of a lattice structure through methods of theoretical analysis, numerical simulation and physical test. The lattice structure is usually manufactured into a sandwich structure together with an upper layer panel and a lower layer panel, and is widely applied to the fields of civil construction, machinery, road traffic, aerospace, rail traffic, biomedicine and the like at present.
At present, a lot of products for testing the performances of the lattice material such as compression resistance, tensile resistance, fatigue test, shearing and the like exist, however, the inventor consults the data, and a device for testing the in-plane elastic modulus of the lattice material is not found at present. Most documents obtain the in-plane equivalent statics parameters of the lattice materials through theoretical analysis and finite element numerical simulation, and a small part of documents are obtained through a physical test, so that when the in-plane equivalent statics parameters of the lattice materials are solved, the support of experimental data is lacked. As a popular engineering application material at present, a device for testing equivalent statics parameters in a dot matrix material surface is needed to be designed.
Disclosure of Invention
An object of the utility model is to provide a static parameter testing arrangement of elasticity in dot matrix material equivalent plane to the problem of the present device that lacks the interior elastic modulus of test dot matrix material plane that proposes in solving the background art.
In order to achieve the purpose, the utility model provides a device for testing the elastic statics parameter in the equivalent plane of the lattice material, which comprises a top end fixing table, a rigid flat plate, a guide structure, a force transmission column, a measuring rod, a fixed scale table, a fixed support, a connecting rod, a slide block, a weight supporting and hanging structure and weights;
the middle part of the connecting rod is hinged with the top of the fixed support, the left end of the connecting rod is connected with the upper end of the weight supporting and hanging structure, and the weight is arranged on the weight supporting and hanging structure; the right end of the connecting rod is hinged with the lower end of a vertically arranged force transmission column, a rigid flat plate is arranged above the force transmission column, a top end fixing table with a plane bottom surface is arranged above the rigid flat plate, scale marks used for measuring horizontal deformation are marked on the top end fixing table and/or the rigid flat plate, and a test core material is placed between the top end fixing table and the rigid flat plate; the right end of the connecting rod is also hinged with the upper end of the measuring rod, a fixed scale table is arranged beside the measuring rod, and scale marks for measuring vertical deformation are marked on the fixed scale table; the connecting rod is also provided with a sliding block which can move along the length direction of the connecting rod; the periphery of the force transmission column is provided with a guide structure so that the force transmission column can keep transmitting force in the vertical direction.
In a specific embodiment, the connecting rod is marked with scale marks, and the sliding block moves in the range of the connecting rod marked with the scale marks; the slider includes first slider and second slider, one of first slider and second slider sets up on the connecting rod along, and another sets up along under the connecting rod, arbitrary one in first slider and the second slider is for the balanced slider that is used for balanced dead weight, and another is the loading slider that is used for the application of force.
In a specific embodiment, when the connecting rod is horizontal, the level of the lower end of the measuring rod coincides with the level of the zero scale line of the fixed scale table.
In a specific embodiment, the left end and the right end of the connecting rod are respectively provided with a left end hinge hole and a right end hinge hole, the connecting rod is connected with the upper end of the weight support hanging structure through the left end hinge hole, the connecting rod is connected with the lower end of the vertically arranged force transmission column through the right end hinge hole, and the connecting rod is also connected with the upper end of the measuring rod through the right end hinge hole; the middle part of the connecting rod is provided with a fixed hinge hole.
In a specific embodiment, the distance from the left end hinge hole to the fixed hinge hole is equal to the distance from the right end hinge hole to the fixed hinge hole.
In a particular embodiment, the guide structure is a fixed pulley.
In a specific embodiment, the rigid plate comprises a graphite plate.
In a specific embodiment, the weight supporting and hanging structure comprises a steel wire rope and a hook, and the hook is arranged at the lower end of the steel wire rope; the weight is arranged above the hook and/or below the hook.
In a specific embodiment, the weight comprises a balance weight for balancing the dead weight and a loading weight for applying acting force on the lattice material, the balance weight is a weight, the weight is arranged above the hook, and a groove on the weight is used for passing through the steel wire rope; the loading weight is used for being hung on the hook.
In a specific embodiment, the testing device further comprises a lifting structure, and the lifting structure is used for synchronously lifting the fixed support and the fixed scale table.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a solve lattice sandwich layer and sandwich plate structure statics equivalent in-plane elastic modulus (including in-plane young modulus and poisson ratio), lack the problem that experimental data supported.
Just the utility model discloses a design is balanced the dead weight, has avoided the influence of anchor clamps dead weight to the measuring accuracy.
The utility model discloses the accessible removes the slider and finely tunes balancing mechanism, further balances the influence of honeycomb dead weight to the measuring accuracy.
The utility model discloses a design guiding mechanism guarantees to apply the stability of load, effectively prevents off-centre.
The utility model discloses a with the gravity load loading weight's reading and deformation reading structure setting together, make things convenient for data reading greatly.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a connecting rod and a sliding block according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a horizontal deformation of a measurement test core material according to an embodiment of the present invention;
fig. 4 is a schematic diagram of measuring vertical deformation of a test core according to an embodiment of the present invention;
wherein, 1, hanging hooks; 2. a weight; 3. a wire rope; 4. a left end hinge hole; 5. a connecting rod; 6. a first slider; 7. a fixed support; 8. fixing the hinge hole; 9. a top end fixing table; 10. testing the core material; 11. a rigid plate; 12. fixing the pulley; 13. a force transmission column; 14. a right end hinge hole; 15. a measuring rod; 16. fixing a scale table; 17. and a second slider.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
The utility model provides a lattice material equivalent surface internal elastic statics parameter testing device, which comprises a top end fixing platform 9, a rigid flat plate 11, a guide structure, a force transmission column 13, a measuring rod 15, a fixed scale platform 16, a fixed support 7, a connecting rod 5, a sliding block, a weight supporting and hanging structure and a weight 2;
the middle part of the connecting rod 5 is hinged with the top of the fixed support 7, the left end of the connecting rod 5 is connected with the upper end of the weight supporting and hanging structure, and the weight 2 is arranged on the weight supporting and hanging structure; the right end of the connecting rod 5 is hinged with the lower end of a vertically arranged force transmission column 13, a rigid flat plate 11 is arranged above the force transmission column 13, a top end fixing table 9 with a plane bottom surface is arranged above the rigid flat plate 11, scale marks used for measuring horizontal direction deformation are marked on the top end fixing table 9 and/or the rigid flat plate 11, and a test core material 10 is placed between the top end fixing table 9 and the rigid flat plate 11; the right end of the connecting rod 5 is also hinged with the upper end of the measuring rod 15, a fixed scale table 16 is arranged beside the measuring rod 15, and scale marks for measuring vertical deformation are marked on the fixed scale table 16; the connecting rod 5 is also provided with a sliding block which can move along the length direction of the connecting rod 5; the periphery of the force transmission column 13 is provided with a guide structure so that the force transmission column 13 maintains a force transmission in a vertical direction.
The connecting rod 5 is marked with scale marks, and the sliding block moves in the range of the connecting rod 5 marked with the scale marks; the sliding blocks comprise a first sliding block 6 and a second sliding block 17, one of the first sliding block 6 and the second sliding block 17 is arranged on the upper edge of the connecting rod 5, the other one of the first sliding block 6 and the second sliding block 17 is arranged on the lower edge of the connecting rod 5, any one of the first sliding block 6 and the second sliding block 17 is a balance sliding block used for balancing self weight, and the other one of the first sliding block 6 and the second sliding block 17 is a loading sliding block used for applying force. When in measurement, the loaded load is mainly applied by the weight on the weight supporting and hanging structure, and when the accurate fine adjustment is needed, the fine adjustment can be carried out by moving the sliding block.
When the connecting rod 5 is horizontal, the horizontal height of the lower end of the measuring rod 15 is consistent with the horizontal height of the zero scale mark of the fixed scale table 16.
The left end and the right end of the connecting rod 5 are respectively provided with a left end hinge hole 4 and a right end hinge hole 14, the connecting rod 5 is connected with the upper end of the weight support hanging structure through the left end hinge hole 4, the connecting rod 5 is connected with the lower end of a vertically arranged force transmission column 13 through the right end hinge hole 14, and the connecting rod 5 is also connected with the upper end of a measuring rod 15 through the right end hinge hole 14; the middle part of the connecting rod 5 is provided with a fixed hinge hole 8.
The distance from the left end hinge hole 4 to the fixed hinge hole 8 is equal to the distance from the right end hinge hole 14 to the fixed hinge hole 8.
The guide structure is a fixed pulley 12. The fixed pulley has the function of enabling the force transmission column to transmit force upwards as much as possible, and before the fixed pulley is used, lubricating oil is smeared on the contact surface of the fixed pulley 12 and the force transmission column 13, so that the influence of errors caused by friction force is reduced.
The rigid plate 11 comprises a graphite plate. The rigid flat plate is a flat plate with higher rigidity and lighter weight, the rigidity is high, the flat plate can be prevented from generating larger deformation interference test when being stressed, and the weight is lighter, so that the additional influence caused by the self weight can be reduced.
The weight supporting and hanging structure comprises a steel wire rope 3 and a hook 1, and the hook 1 is arranged at the lower end of the steel wire rope 3; the weight 2 is arranged above the hook 1 and/or below the hook 1.
The weight 2 comprises a balance weight for balancing the dead weight and a loading weight for applying acting force on the lattice material, the balance weight is a weight, the weight is arranged above the hook 1, and a groove in the weight is used for penetrating through the steel wire rope; the loading weight is used for being hung on the hook 1. The steel wire rope 3 can be conveniently clamped into a groove of the weight-increasing weight.
The testing device further comprises a lifting structure, and the lifting structure is used for synchronously lifting the fixed support 7 and the fixed scale table 16.
During the experiment, the fixed support 7 and the fixed scale table 16 are synchronously lowered to a lower position, the force transmission column 13 and the rigid flat plate 11 are arranged at the right end of the connecting rod 5, then the balance weight is added on the hook 1 to ensure the level of the connecting rod 5, the test core material 10 is placed on the rigid flat plate 11 after the two ends of the connecting rod 5 are balanced, and then the two ends of the connecting rod 5 are zeroed by moving the sliding block; after zero setting is completed, the fixed support 7 and the fixed scale table 16 are lifted synchronously, so that the upper end face of the test core material 10 and the lower end face of the top end fixing table 9 are in a joint unstressed state, a weight for loading is hung on the hook 1, the gravity loaded by the weight is transmitted to the rigid flat plate 11 in contact with the lattice material test core material 10 through a lever structure, and the test core material 10 can be elastically deformed at the moment. The deformation of the test core material 10 in the vertical direction can be known through the comparison and measurement of the measuring rod 15 and the fixed scale table 16, the deformation of the test core material 10 in the horizontal direction can be known through the comparison of the test core material 10 with the scale marks on the top end fixed table 9, the loading pressure can be known through the weight for loading, and finally the equivalent static elastic modulus in the lattice material surface, namely the equivalent static parameter in the lattice material surface can be known through calculation.
Example 1
The in-plane equivalent statics parameter of a 6063 aluminum alloy honeycomb core of 80X 50mm was measured:
the honeycomb core to be measured is placed on the graphite flat plate, the influence of the dead weight of the honeycomb core is eliminated by moving the sliding block, the honeycomb core contacts the top end fixing table 9 at the moment, and the lower end of the measuring rod 15 is flush with the zero scale mark of the fixing scale table 16. Then, the measurement is started, the weight of the suspended weight for loading is recorded, the deformation in the horizontal direction is obtained through the scale of the top end fixing table 9, and the deformation in the vertical direction is obtained through the fixing scale table 16. And then obtaining the stress, the strain in the horizontal direction and the strain in the vertical direction according to the size of the honeycomb core. And finally, calculating to obtain the in-plane Young modulus and Poisson ratio of the honeycomb core in the loading direction. The honeycomb core is placed in the other loading direction, and the in-plane Young modulus and the Poisson ratio of the honeycomb core in the direction can be calculated according to the same method.
Example 2
The in-plane equivalent statics parameters of a 3003 aluminum alloy honeycomb core of 80X 50mm were measured:
the honeycomb core to be measured is placed on the graphite flat plate, the influence of the dead weight of the honeycomb core is eliminated by moving the sliding block, the honeycomb core contacts the top end fixing table 9 at the moment, and the lower end of the measuring rod 15 is flush with the zero scale mark of the fixing scale table 16. Then, measurement is started, the weight of the suspended weight for loading and the force applied to the honeycomb core after the equivalent of the weight is moved are recorded, the deformation in the horizontal direction is obtained through the scale of the top end fixing table 9, and the deformation in the vertical direction is obtained through the fixing scale table 16. And then obtaining the stress, the strain in the horizontal direction and the strain in the vertical direction according to the size of the honeycomb core. And finally, calculating to obtain the in-plane Young modulus and Poisson ratio of the honeycomb core in the loading direction. The honeycomb core is placed in the other loading direction, and the in-plane Young modulus and the Poisson ratio of the honeycomb core in the direction can be calculated according to the same method.
The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions and replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A device for testing elastic statics parameters in an equivalent plane of a lattice material is characterized by comprising a top end fixing platform (9), a rigid flat plate (11), a guide structure, a force transmission column (13), a measuring rod (15), a fixed scale platform (16), a fixed support (7), a connecting rod (5), a sliding block, a weight supporting and hanging structure and a weight (2);
the middle part of the connecting rod (5) is hinged with the top of the fixed support (7), the left end of the connecting rod (5) is connected with the upper end of the weight supporting and hanging structure, and the weight (2) is arranged on the weight supporting and hanging structure; the right end of the connecting rod (5) is hinged with the lower end of a vertically arranged force transmission column (13), a rigid flat plate (11) is arranged above the force transmission column (13), a top end fixing table (9) with a plane bottom surface is arranged above the rigid flat plate (11), scale marks used for measuring horizontal direction deformation are marked on the top end fixing table (9) and/or the rigid flat plate (11), and a test core material (10) is arranged between the top end fixing table (9) and the rigid flat plate (11); the right end of the connecting rod (5) is also hinged with the upper end of the measuring rod (15), a fixed scale table (16) is arranged beside the measuring rod (15), and scale marks for measuring vertical deformation are marked on the fixed scale table (16); the connecting rod (5) is also provided with a sliding block which can move along the length direction of the connecting rod (5); the periphery of the force transmission column (13) is provided with a guide structure so that the force transmission column (13) can transmit force in the vertical direction.
2. The device for testing the elastostatic parameters in the equivalent plane of the lattice material as recited in claim 1, wherein the connecting rod (5) is marked with scale marks, and the sliding block moves in the range of the connecting rod (5) marked with the scale marks; the slider includes first slider (6) and second slider (17), one setting is followed on connecting rod (5) in first slider (6) and second slider (17), and another setting is followed under connecting rod (5), arbitrary one in first slider (6) and second slider (17) is the balanced slider that is used for balancing the dead weight, and another is the loading slider that is used for the application of force.
3. The device for testing the elastostatic parameters in the equivalent plane of the lattice material as recited in claim 1, characterized in that when the connecting rod (5) is horizontal, the horizontal height of the lower end of the measuring rod (15) is consistent with the horizontal height of the zero scale mark of the fixed scale table (16).
4. The device for testing the elastic statics parameter in the equivalent plane of the lattice material as claimed in claim 1, wherein a left end hinge hole (4) and a right end hinge hole (14) are respectively formed at the left end and the right end of the connecting rod (5), the connecting rod (5) is connected with the upper end of the weight support structure through the left end hinge hole (4), the connecting rod (5) is connected with the lower end of a vertically arranged force transmission column (13) through the right end hinge hole (14), and the connecting rod (5) is further connected with the upper end of the measuring rod (15) through the right end hinge hole (14); the middle part of the connecting rod (5) is provided with a fixed hinge hole (8).
5. The device for testing the elastostatic parameters in the equivalent plane of lattice materials of claim 4, wherein the distance from the left end hinge hole (4) to the fixed hinge hole (8) is equal to the distance from the right end hinge hole (14) to the fixed hinge hole (8).
6. The device for testing the equivalent in-plane elastostatic parameters of lattice materials of claim 1, wherein said guiding structure is a fixed pulley (12).
7. The device for testing the equivalent in-plane elastostatic parameters of lattice materials of claim 1, wherein said rigid plate (11) comprises a graphite plate.
8. The device for testing the elastostatic parameters in the equivalent plane of the lattice material as claimed in claim 1, wherein the weight supporting and hanging structure comprises a steel wire rope (3) and a hook (1), and the hook (1) is arranged at the lower end of the steel wire rope (3); the weight (2) is arranged above the hook (1) and/or below the hook (1).
9. The device for testing the elastic statics parameter in the equivalent plane of the lattice material according to claim 8, wherein the weight (2) comprises a balance weight for balancing the dead weight and a loading weight for applying an acting force on the lattice material, the balance weight is a weight, the weight is arranged above the hook (1), and a groove in the weight is used for penetrating through the steel wire rope; the loading weight is used for being hung on the hook (1).
10. The device for testing the elastostatic parameters in the equivalent surface of a lattice material of claim 1, further comprising a lifting structure for synchronously lifting the fixed support (7) and the fixed scale table (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120805092.6U CN213239771U (en) | 2021-04-20 | 2021-04-20 | Device for testing elastic statics parameter in equivalent plane of lattice material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120805092.6U CN213239771U (en) | 2021-04-20 | 2021-04-20 | Device for testing elastic statics parameter in equivalent plane of lattice material |
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| CN213239771U true CN213239771U (en) | 2021-05-18 |
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| CN202120805092.6U Expired - Fee Related CN213239771U (en) | 2021-04-20 | 2021-04-20 | Device for testing elastic statics parameter in equivalent plane of lattice material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447371A (en) * | 2021-06-10 | 2021-09-28 | 中南大学 | High-precision testing method for equivalent statics torsion parameters of dot matrix plates |
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2021
- 2021-04-20 CN CN202120805092.6U patent/CN213239771U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447371A (en) * | 2021-06-10 | 2021-09-28 | 中南大学 | High-precision testing method for equivalent statics torsion parameters of dot matrix plates |
| CN113447371B (en) * | 2021-06-10 | 2022-04-22 | 中南大学 | High-precision testing method for equivalent statics torsion parameters of dot matrix plates |
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Granted publication date: 20210518 |