CN109283067A - A kind of sheet metal double direction shear experimental rig - Google Patents
A kind of sheet metal double direction shear experimental rig Download PDFInfo
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- CN109283067A CN109283067A CN201811069614.XA CN201811069614A CN109283067A CN 109283067 A CN109283067 A CN 109283067A CN 201811069614 A CN201811069614 A CN 201811069614A CN 109283067 A CN109283067 A CN 109283067A
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- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- 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
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- 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
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- 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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0208—Specific programs of loading, e.g. incremental loading or pre-loading
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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of sheet metal double direction shear experimental rigs, including servomotor, gear reducer structure, measuring instrument, tension and compression cutting mechanism and rotational shear mechanism.Servo motor provides power for whole device, drives the operating of whole device；Deceleration mechanism is the shearing motion in order to convert the motor of high speed to low speed；Measuring instrument is to measure the active force generated during test and deformation；Drawing, pressure cutting mechanism and rotational shear mechanism are the executing agencies of entire experimental rig, are to realize the shear-deformable of double direction shear test specimen both direction.When can be realized double direction shear using motor driven, the constant drawing of arbitrary proportion, compression shear shear deformation and rotational shear deformation improve the reliability of test test result；By rotating and reverse for drive system, forward and reverse shearing of sheet metal is realized, thus more fully research material performance.
Description
Technical field
The invention belongs to a kind of experimental rigs, are a kind of experimental rigs that can be used for measuring sheet metal cutting performance,
More particularly to a kind of sheet metal double direction shear experimental rig.
Background technique
In recent years, in order to improve as far as possible material utilization rate and give full play to material property, some new materials
Energy test method is gradually used by people.The shearing test of sheet metal can study big strain because test range of strain is big
Material behavior and receive significant attention.Currently, the test method to sheet metal shearing test and comprising shearing is existing very
It is more, but performance study when for plate double direction shear is less, and different deformation states material property is influenced it is very big.
It is found by the literature search to the prior art, the Chinese patent of Publication No. CN108169036A, denomination of invention:
A kind of mechanical sheet metal Bidirectional shearing device, which may be implemented the double direction shear of sheet metal, two-way for studying
The deformational behavior of shearing, but the proportion of deformation described in this device rotatably between shearing and press-down type shearing is fixed
, if wanting to change proportion of deformation, need replacing different connecting rods, and requirement proposed to the size of connecting rod, higher cost and
It is very inconvenient.In addition, during the test, the ratio of two kinds of modes of texturing be not it is constant, one can be caused to test result
Fixed influence.The Internal and external cycle of test specimen is all fixed by bolts simultaneously, and after inner ring is fixed, bolt installation in outer ring is inconvenient, and holds
Opposite sliding easily occurs.Since the use of link mechanism will appear locking phenomenon, the maximum operating position during test will affect
Material property when moving, and cannot be used for research material circulation shear.
Summary of the invention
Technical problems to be solved:
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of sheet metal double direction shear experimental rig, it can
When realizing sheet metal double direction shear, the constant drawing of arbitrary proportion, compression shear shear deformation and rotational shear deformation improve test knot
The reliability of fruit；By rotating and reverse for drive system, realizes the drawing and pressing type shearing of sheet metal or sheared along reverse rotation, from
And more fully research material performance.The device technique is simple, easy to operate, has low cost, short route, efficiently convenient etc. excellent
Point is easy to heavy industrialization application.
The technical scheme is that a kind of sheet metal double direction shear experimental rig, it is characterised in that: including servo electricity
Machine, deceleration mechanism, measuring instrument draw, press cutting mechanism and rotational shear mechanism；The servo motor includes two servo electricity
Machine is used to provide power the driving experimental rig operating；Two deceleration mechanisms connect with two servo motors respectively
It connects, for converting the motor of high speed to the shearing motion of low speed；The measuring instrument force snesor, displacement sensor,
Torque sensor and angular transducer, for measuring the active force generated during test and deformation；It is described to draw, press cutting mechanism
With rotational shear mechanism, the shearing for realizing the double direction shear test specimen axial and circumferential both direction of circular plate structure becomes
Shape；
The drawing, pressure cutting mechanism include lead screw, lead screw fixing seat, movable support, movable supporting frame, circular bosses and pressure
Tight block；The lead screw both ends are each passed through two through-holes in the lead screw fixing seat, and cooperate with the via clearance, described
For supporting the lead screw, described lead screw one end is connect lead screw fixing seat with a deceleration mechanism；The movable support
It is provided with tapped through hole, with being threadedly engaged for the lead screw；The deceleration mechanism is further driven to by driving the lead screw rotation
The movable support is mobile, and institute's displacement sensors are installed in the movable support, for measuring test piece deformation displacement；
Force sensor, movable supporting frame and circle is successively fixedly mounted in one end of the movable support towards the rotational shear mechanism
Boss；The circular bosses are cylindrical structure, and one end is fixed on the movable supporting frame, and the other end passes through the compact heap
On step through-hole be fixedly and coaxially connected with the double direction shear test specimen；The compact heap is column structure, thereon the step
Through-hole is located at cental axial position, large aperture one end and the double direction shear test specimen clearance fit, and small-bore one end is set in described
On circular bosses；
Rotational shear mechanism one end is connect with the compact heap, and the other end passes through axis and another described deceleration mechanism
Connection；The rotational shear mechanism includes tray, torque sensor, spill spin block and bearing block；The axis passes through the bearing
The bearing installed in block hole supports the axis by the bearing；The angular transducer is installed, for surveying on the axis
The deformation corner generated during volume rotary shearing test；Described spill spin block one end is fixedly and coaxially connected with the axis, another
End, which is coaxially fixedly connected sequentially, the torque sensor and tray；The tray is hollow cylinder knot open at one end
Structure, closed end are connect with the torque sensor, and open end is flange plate structure, and the ring flange internal diameter is less than described two-way
Shear test block diameter, outer diameter are greater than the double direction shear test specimen diameter；
The circular bosses diameter is less than the tray ring flange internal diameter；The servo motor operating makes described removable
Support is mobile, further pushes the double direction shear test specimen, keeps the ring flange of the double direction shear test specimen and the tray same
After axis contact, the compact heap and the tray are coaxially fastened with bolt.
A further technical solution of the present invention is: double direction shear test specimen two ends face same position is provided with coaxial annular
Groove；The circular bosses diameter is less than the groove inner wall diameter；Compact heap small-bore one end diameter is greater than the groove
Outer diameter；The ring flange internal diameter of the tray is greater than the double direction shear test specimen groove outer wall diameter.
A further technical solution of the present invention is: the drawing, pressure cutting mechanism further include guide rail and abutments, the work
It is fixed below the movable supporting frame, is played a supportive role with support；The movable support and abutments bottom are respectively mounted
There are sliding rail or sliding block and the guide rail to cooperate, resistance when for reducing the movable support and mobile movable supporting frame stress
Power.
A further technical solution of the present invention is: the movable supporting frame is U-shaped structure, one end side wall and the power are passed
Sensor is fixed, and other end side wall is fixed with the circular bosses, and lower end surface is fixed with the abutments.
A further technical solution of the present invention is: the deceleration mechanism includes retarder, turbine and worm pair, base and shaft coupling
Device is successively connect with the servo motor.
Beneficial effect
The present invention is directed to sheet metal cutting performance, proposes a kind of test dress that can measure sheet metal cutting performance
It sets.The beneficial effects of the present invention are:
1. by motor driven can carry out simultaneously sheet metal double direction shear or unidirectional shearing test, no replacement is required its
It is convenient that his equipment is come to test tape；And it can guarantee the shear-deformable and rotary shear-deformable proportions constant of drawing, pressure type；
2. the circulation shear test and up time of two states can be drawn test specimen, pressed using rotating and reverse for motor
Needle, rotational shear counterclockwise test, are capable of the kinematic hardening cutting performance of research material；
3. (pressure) and rotation double direction shear test can be drawn by rotating and reverse for motor simultaneously, it is double for studying
To kinematic hardening cutting performance when shearing；
4. carry out shearing test using motor driven, the press-down type that arbitrary proportion may be implemented is shear-deformable and rotary
It is shear-deformable, and the not limitation of maximum distortion, improve the reliability of test result；
5. the present invention carries out the measurement of rotation angle using angular transducer, measurement result utilizes connecting rod than in the prior art
The triangular transformation of mechanism is more accurate；
6. the structure of solid double direction shear test specimen is compressed using compact heap and tray, it is straight using bolt compared with the existing technology
It is more reliable to connect fixation, and relative displacement will not occur；
7. the present invention can be changed when testing by the turbine and worm pair of replacement different retarder or different drive ratios
Rate of deformation, and then study influence of the rate of deformation to experimental performance.
Detailed description of the invention
Fig. 1 is overall schematic of the present invention；
Fig. 2 is deceleration structural scheme of mechanism；
Fig. 3 is to draw (pressure) cutting mechanism schematic diagram；
Fig. 4 is rotating mechanism schematic diagram；
Description of symbols: 1- first servo motor；The first retarder of 2-；The first base of 3-；4- first shaft coupling；5-
One worm screw；The first turbine of 6-；7- second shaft coupling；8- lead screw fixing seat；9- fixes bracket；10- displacement sensor；11- displacement
Fixing rack for sensor；12- guide rail；13- sliding block；14- movable support；15- lead screw；16- force snesor；17- abutments；
18- bearing block；The second worm screw of 19-；The second base of 20-；21- angular transducer；The second turbine of 22-；The second retarder of 23-；24-
Second motor；25- axis；26- spill spin block；27- torque sensor；28- tray；29- double direction shear test specimen；30- compact heap；
31- circular bosses；32- movable supporting frame.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to be used to explain the present invention, and cannot understand
For limitation of the present invention.
Referring to Fig. 1, a kind of sheet metal double direction shear experimental rig of the present invention, including servo motor, deceleration mechanism, measurement
Instrument is drawn, pressure cutting mechanism and rotating mechanism form.Servo motor is used to provide the power of entire Bidirectional shearing device, and
Can by programming realize servo motor positive and negative rotation, thus carry out draw cut or compression shear and rotational shear deformation, research material
Forward and reverse cutting performance.Double direction shear test specimen is circular plate structure, and both ends of the surface same position is provided with coaxial annular groove.
Due to needing lesser movement velocity when carrying out shearing test, thus need to carry out the deformation velocity of whole device
Control, especially shear-deformable speed.Referring to Fig. 2, deceleration mechanism includes retarder, turbine and worm pair, base and shaft coupling, is subtracted
Fast device is matched with motor, and the turbine and worm of simultaneous selection appropriate ratios is further slowed down, and deceleration mechanism is logical
Base is crossed to be fixed on test platform.
Measuring instrument includes force snesor 16, displacement sensor 10, angular transducer 21 and torque sensor 27, main use
In the force value, displacement, corner and the torque that measure and record shearing test generates in the process.
Referring to Fig. 3, drawing, pressing cutting mechanism is an executing agency of whole device, for realizing one side of sheet metal
To shearing, it is specific draw, pressure shearing motion can be controlled by rotating and reverse for servo motor.It draws, pressure cutting mechanism includes
Guide rail 12, sliding block 13, lead screw 15, lead screw fixing seat 8, movable support 14,30 structure of abutments 17, circular bosses 31 and compact heap
At.Wherein lead screw fixing seat 8, guide rail 12 and fixed bracket 9 are mounted on test platform, the fixation for entire mechanism.It draws, pressure
Cutting mechanism one end is connect with second shaft coupling 7, and the other end is connect with rotational shear mechanism one end；15 both ends of lead screw difference
Two through-holes in lead screw fixing seat 8, and cooperate with the via clearance, lead screw fixing seat 8 is used to support the lead screw,
Lead screw one end is connect with second shaft coupling 7；Movable support 14 is provided with tapped through hole, with being threadedly engaged for lead screw 15；It is described to subtract
Fast mechanism is further driven to the movement of movable support 14, displacement sensor 10 passes through displacement sensing by driving lead screw 15 to rotate
Device fixed frame 11 is installed in movable support 14, by the relative distance measure of the change between fixed bracket 9 in drawing, compression shear
The displacement generated in the process；Force sensor is successively fixedly mounted in one end of movable support 14 towards the rotational shear mechanism
16, movable supporting frame 32 and circular bosses 31 pass through the pulling force or pressure during the measurement test of force snesor 16.Circular bosses 31 are
Cylindrical structure, one end are fixed on movable supporting frame 32, and the step through-hole that the other end passes through on compact heap 30 is cut with two-way
Test specimen 29 is cut to be fixedly and coaxially connected；Compact heap 30 is column structure, and the step through-hole is located at cental axial position, large aperture thereon
One end and 29 outer peripheral surface clearance fit of double direction shear test specimen, for limiting 29 radial motion of double direction shear test specimen, small-bore
One end is set on the circular bosses.31 diameter of circular bosses is less than the groove inner wall diameter of the double direction shear test specimen；Pressure
Tight 30 small-bore one end diameter of block is greater than the groove outer wall diameter of the double direction shear test specimen.
Abutments 17 are fixed on 32 lower section of movable supporting frame, play a supportive role；Movable support 14 and abutments 17
Bottom is mounted on sliding block 13 and guide rail 12 cooperates, from test when for reducing abutments 17 and mobile movable supporting frame 32
The resistance of platform.Movable supporting frame 32 is U-shaped structure, and one end side wall is fixed with the force snesor, other end side wall and circle
Boss 31 is fixed, and lower end surface and abutments 17 are fixed, this structure be the concentricity guaranteed when installing, for drawing, compression-shear test
The transmitting of load in the process keeps force sensor measuring more acurrate.
Referring to Fig. 4, rotating mechanism is another executing agency of whole device, and one end is connect with compact heap 30, another
End is connect by axis 25 with deceleration mechanism described in another；Including tray 28, torque sensor 27, spill spin block 26 and bearing block
18；Bearing block 18 is mounted on test platform, and the axis passes through the bearing installed in the bearing block hole, passes through the bearing
Support the axis；The bearing block 18 is used for the coaxial fixation of whole rotating mechanism.25 one end of axis is connect with angular transducer 21,
When carrying out rotary shear-deformable, axis 25 can be rotated, and can measure the angle during test by angular transducer 21
Degree variation.26 one end of spill spin block is fixedly and coaxially connected with axis 25, and the other end is fixedly and coaxially connected with torque sensor 27, and and axis
25 are connected by key, and the rotation of spill spin block 26 is driven by the rotation of axis 25, so that whole rotating mechanism be made to try double direction shear
Part 29 is rotatably sheared.Tray 28 is hollow cylinder structure open at one end, closed end and torque sensor 27
It is fixedly and coaxially connected, open end is flange plate structure, and the ring flange internal diameter is less than 29 diameter of double direction shear test specimen, is greater than two-way
29 groove outer wall diameter of shear test block；The flange external diameter is greater than 29 diameter of double direction shear test specimen；
31 diameter of circular bosses is less than the ring flange internal diameter of tray 28；Servo motor 1 operates, and keeps movable support mobile
32, double direction shear test specimen 29 is further pushed, after the ring flange axial contact for making double direction shear test specimen 29 and tray 28, uses spiral shell
Bolt coaxially fastens compact heap 30 and tray 28.
Before on-test, double direction shear test specimen 29 is bolted on circular bosses 31, compact heap 30 passes through boss
Platform 31, then first servo motor 1 operates, and keeps movable support 14 mobile, and the movement of impetus support 17 is closer to accept
Double direction shear test specimen is compressed compact heap 30 admittedly by bolt after double direction shear test specimen 29 is contacted with tray 28 by disk 28
Fixed, so far, double direction shear test specimen is installed.When test, control is programmed to the servo motor of control both direction shearing,
By the amount of movement of computer program control action support 17 and the rotation amount of axis 25, and then controls and draw, presses shear deformation and rotation
Turn shear deformation.Corresponding force snesor 16 and the measurement of displacement sensor 10 draw, the drawing during compression shear shear deformation, pressure and
Displacement, angular transducer 21 and torque sensor 27 measure rotation angle and torque in rotational shear deformation.By to sensing
Device measured value is analyzed, and feedback regulation can be carried out to shearing test process, with two deformation directions of this Control experiment process
Shearing displacement ratio keep constant, research draw, compression shear cut the influence with rotational shear different proportion to material property.
Double direction shear test specimen 29 is also possible to other plate structures, such as quadrangle, 30 step through-hole of compact heap
Large aperture one end shape is matched with 29 shape of double direction shear test specimen, and keeps clearance fit.
In addition it can be used alone in test a motor, so that independent drawn, shearing test or rotation is pressed to cut
Test is cut, the coupled relation of unidirectional shearing and double direction shear is studied with this.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (5)
1. a kind of sheet metal double direction shear experimental rig, it is characterised in that: including servo motor, deceleration mechanism, measuring instrument,
It draws, press cutting mechanism and rotational shear mechanism；The servo motor includes two servo motors, is used to provide power described in driving
Experimental rig operating；Two deceleration mechanisms are connect with two servo motors respectively, for rotating the motor of high speed
It is converted into the shearing motion of low speed；The measuring instrument force snesor, displacement sensor, torque sensor and angular transducer,
For measuring the active force generated during test and deformation；It is described to draw, press cutting mechanism and rotational shear mechanism, for realizing
The double direction shear test specimen axial and circumferential both direction of circular plate structure it is shear-deformable；
The drawing, pressure cutting mechanism include lead screw, lead screw fixing seat, movable support, movable supporting frame, circular bosses and compression
Block；The lead screw both ends are each passed through two through-holes in the lead screw fixing seat, and cooperate with the via clearance, the silk
For supporting the lead screw, described lead screw one end is connect thick stick fixing seat with a deceleration mechanism；The movable support is opened
There is tapped through hole, with being threadedly engaged for the lead screw；The deceleration mechanism is further driven to institute by driving the lead screw rotation
It is mobile to state movable support, institute's displacement sensors are installed in the movable support, for measuring test piece deformation displacement；Institute
Force sensor, movable supporting frame and boss is successively fixedly mounted in the one end for stating movable support towards the rotational shear mechanism
Platform；The circular bosses are cylindrical structure, and one end is fixed on the movable supporting frame, and the other end passes through on the compact heap
Step through-hole be fixedly and coaxially connected with the double direction shear test specimen；The compact heap is column structure, and the step is logical thereon
Hole is located at cental axial position, large aperture one end and the double direction shear test specimen clearance fit, and small-bore one end is set in the circle
On boss；
Rotational shear mechanism one end is connect with the compact heap, and the other end is connected by axis and another described deceleration mechanism
It connects；The rotational shear mechanism includes tray, torque sensor, spill spin block and bearing block；The axis passes through the bearing block
The bearing installed in through-hole supports the axis by the bearing；The angular transducer is installed, for measuring on the axis
The deformation corner generated during rotary shearing test；Described spill spin block one end is fixedly and coaxially connected with the axis, the other end
Coaxially being fixedly connected sequentially has the torque sensor and tray；The tray is hollow cylinder knot open at one end
Structure, closed end are connect with the torque sensor, and open end is flange plate structure, and the ring flange internal diameter is less than described two-way
Shear test block diameter, outer diameter are greater than the double direction shear test specimen diameter；
The circular bosses diameter is less than the tray ring flange internal diameter；The servo motor operating, makes the movable support
It is mobile, the double direction shear test specimen is further pushed, connects the double direction shear test specimen and the ring flange of the tray coaxially
After touch, the compact heap and the tray are coaxially fastened with bolt.
2. sheet metal double direction shear experimental rig according to claim 1, it is characterised in that: the double direction shear test specimen two
End face same position is provided with coaxial annular groove；The circular bosses diameter is less than the groove inner wall diameter；The compact heap
Small-bore one end diameter is greater than the groove outer wall diameter.
3. sheet metal double direction shear experimental rig according to claim 2, it is characterised in that: described to draw, press cutting mechanism
It further include guide rail and abutments, the abutments are fixed below the movable supporting frame, play a supportive role；It is described removable
Dynamic support and abutments bottom are mounted on sliding rail or sliding block and the guide rail cooperates, for reduce the movable support and
Resistance when movable supporting frame stress is mobile.
4. sheet metal double direction shear experimental rig according to claim 3, it is characterised in that: the movable supporting frame is U
Type structure, one end side wall are fixed with the force snesor, and other end side wall is fixed with the circular bosses, lower end surface and the work
It is fixed with support.
5. sheet metal double direction shear experimental rig according to claim 1, it is characterised in that: the deceleration mechanism includes subtracting
Fast device, turbine and worm pair, base and shaft coupling, successively connect with the servo motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069614.XA CN109283067B (en) | 2018-09-13 | 2018-09-13 | Two-way shear test device of sheet metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811069614.XA CN109283067B (en) | 2018-09-13 | 2018-09-13 | Two-way shear test device of sheet metal |
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| CN109283067B CN109283067B (en) | 2021-03-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647831A (en) * | 2020-05-21 | 2020-09-11 | 范语楠 | Device and method for preparing Al-Cu-Mg alloy nanocrystalline grain structure |
| CN112611654A (en) * | 2020-11-27 | 2021-04-06 | 山东大学 | Circulating shear fatigue testing machine |
| CN113532370A (en) * | 2021-06-11 | 2021-10-22 | 中国建筑第八工程局有限公司 | Deformation measuring method for bidirectional sheared concrete member |
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| CN111647831A (en) * | 2020-05-21 | 2020-09-11 | 范语楠 | Device and method for preparing Al-Cu-Mg alloy nanocrystalline grain structure |
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| CN113532370A (en) * | 2021-06-11 | 2021-10-22 | 中国建筑第八工程局有限公司 | Deformation measuring method for bidirectional sheared concrete member |
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