CN217277443U - Device for lateral deformation of test piece in mechanics measurement experiment - Google Patents
Device for lateral deformation of test piece in mechanics measurement experiment Download PDFInfo
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- CN217277443U CN217277443U CN202220620024.7U CN202220620024U CN217277443U CN 217277443 U CN217277443 U CN 217277443U CN 202220620024 U CN202220620024 U CN 202220620024U CN 217277443 U CN217277443 U CN 217277443U
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- test piece
- lateral deformation
- upright post
- experiment
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Abstract
The utility model provides a device of test piece lateral deformation in dynamometry experiment, simple structure, the cost is lower, can effectively solve the current lateral deformation device installation complicated and the test piece shape commonality is poor not enough. The device is formed by connecting a fixed gasket, a base, a fixed upright post, a detachable upright post, a baffle and a magnetostrictive extensometer; in a mechanical experiment, the lateral deformation measurement of test pieces in different shapes is realized by mounting the detachable stand columns in slotted holes of different bottom plates.
Description
Technical Field
The utility model relates to a measure tensile or compression experiment test piece lateral deformation's of mechanics device, the lateral deformation of in particular to different shape test pieces.
Background
At present, in a mechanical stretching or compressing experiment, lateral deformation monitoring of a test piece mainly depends on a chain type sensor and a resistance strain gauge; the chain sensor has high precision and convenient installation, but can only be used for measuring the lateral deformation of the cylindrical test piece; the resistance strain gauge has high precision, but the strain gauge is complex to install, and cannot be reused after the experiment, thereby causing resource waste.
Disclosure of Invention
The sensor aims to overcome the defects that the existing sensor is simple to mount but not universal, is universal but is fussy to mount in the lateral deformation monitoring; the utility model provides a measure device of test piece lateral deformation in mechanics experiment, the device not only installs simply to can be applicable to the test piece of different shapes.
The utility model provides a technical scheme that its technical problem adopted is: the device fixes the base on the lower furniture of the testing machine through the fixing gasket; the base is provided with a fixed upright post, and the upright post is provided with a baffle plate and used for restraining a test piece in an experiment so that the test piece does not move except for stressed deformation in the experiment; the magnetostrictive extensometer is installed on a detachable upright post through a baffle, and the bottom of the detachable upright post is of an inverted T shape, so that the magnetostrictive extensometer can be conveniently detached from a base provided with 3T-shaped grooves; when the lateral deformation of the cylindrical test piece is measured, the detachable upright post is arranged in the middle groove; when measuring cube test piece lateral deformation, removable stand installs in the inslot that corresponds the direction.
The utility model has the advantages that: simple to operate can measure the lateral deformation of different shape test pieces, and the cost is lower simultaneously to the lateral deformation of measurement test piece that can be accurate.
Drawings
The present invention will be further explained with reference to the drawings and examples
FIG. 1 is an overall view of the present invention
FIG. 2 is a view of the base of the present invention
FIG. 3 is a drawing of the extensometer of the present invention
In the figure, 1, a detachable upright post, 2, a baffle, 3, a base, 4, a fixed gasket, 5, a magnetostrictive extensometer, 6, a fixed upright post, 7, an intermediate groove, 8, a right groove and 9, a left groove.
Detailed Description
In fig. 1, a fixed gasket (4), a base (3), a fixed upright post (6) and a baffle (2) are fixedly connected, and a detachable upright post (1), the baffle (2) and a magnetostrictive extensometer (5) are fixedly connected and then connected through a middle groove (7), a left groove (9) and a right groove (8).
In fig. 1, a test piece is placed close to a baffle (2) on a fixed upright post (6), so that the test piece cannot move in a plane in an experiment and only can deform due to stress.
In fig. 2, a T-shaped groove is formed in the base (3), and the opening positions of the T-shaped groove are limited by a left groove (9), a right groove (8) and a middle groove (7) according to the positions, and the limiting conditions are as follows: the middle groove (7) is positioned on an angular bisector of an included angle formed by the two fixed upright posts (6); the left groove (9) and the right groove (8) are respectively positioned on the normal of each fixed upright post (2), and the normal passes through the center of the baffle (2).
In fig. 3, the detachable column (1), the baffle (2) and the magnetostrictive extensometer (5) are fixedly connected and installed in the bottom plate (3) through a T-shaped structure at the bottom, so that the detachable column, the baffle (2) and the magnetostrictive extensometer are kept fixed in the experiment.
In fig. 1, the magnetostrictive extensometer (5) is in contact with a fixed test piece, and the length of the magnetostrictive extensometer (5) is changed due to the deformation of the test piece under stress, so that the deformation is measured.
In fig. 1, the device can be used to measure the lateral deformation of a cylindrical test piece when the removable upright (1) is mounted in an intermediate groove (7) on the base (3), with the strain calculation formula:
in the formula (1), epsilon is lateral strain; f is the displacement changed by the magnetostrictive extensometer; d is the specimen diameter.
In fig. 1, when the detachable column (1) is installed in the left slot (9) or the right slot (8) on the base (3), the device can be used for measuring the lateral deformation of a cube specimen, and the strain calculation formula is as follows:
in the formula (2), epsilon i Is the lateral strain in the corresponding direction;f i displacement changed for the magnetostrictive extensometer in the corresponding direction; u. of i The original length of the cube test piece in the corresponding direction is shown; i represents a direction.
Claims (3)
1. The utility model provides a device that testpieces lateral deformation in dynamometry experiment, by shim, base, fixed stand, removable stand, baffle, magnetostrictive extensometer connect to form characterized by: the device fixes the base on the lower clamp of the testing machine through the fixing gasket; the base is provided with a fixed upright post, and the upright post is provided with a baffle plate and used for restraining a test piece in an experiment so that the test piece does not move except for stressed deformation in the experiment; the magnetostrictive extensometer is installed on a detachable upright post through a baffle, and the bottom of the detachable upright post is of an inverted T shape, so that the magnetostrictive extensometer can be conveniently detached from a base provided with 3T-shaped grooves; when the lateral deformation of the cylindrical test piece is measured, the detachable upright post is arranged in the middle groove; when measuring cube test piece lateral deformation, removable column mouting can realize carrying out the lateral deformation measurement to the test piece of different shapes in the inslot that corresponds the direction, removable column mouting in different bottom plate slotted holes.
2. The apparatus of claim 1, wherein: the detachable stand column is arranged on the angle bisection line of the two fixed stand columns, so that the lateral deformation of the cylindrical test piece can be measured, and the satisfied formula is as follows:
。
3. the apparatus of claim 1, wherein: install removable stand and can realize measuring square body test piece lateral deformation on the normal of two fixed posts, its formula that satisfies is:
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220620024.7U CN217277443U (en) | 2022-03-21 | 2022-03-21 | Device for lateral deformation of test piece in mechanics measurement experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220620024.7U CN217277443U (en) | 2022-03-21 | 2022-03-21 | Device for lateral deformation of test piece in mechanics measurement experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217277443U true CN217277443U (en) | 2022-08-23 |
Family
ID=82871036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220620024.7U Active CN217277443U (en) | 2022-03-21 | 2022-03-21 | Device for lateral deformation of test piece in mechanics measurement experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217277443U (en) |
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2022
- 2022-03-21 CN CN202220620024.7U patent/CN217277443U/en active Active
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