CN104990787B - Parallel disk type material property experimental provision - Google Patents
Parallel disk type material property experimental provision Download PDFInfo
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- CN104990787B CN104990787B CN201510368716.1A CN201510368716A CN104990787B CN 104990787 B CN104990787 B CN 104990787B CN 201510368716 A CN201510368716 A CN 201510368716A CN 104990787 B CN104990787 B CN 104990787B
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- loading motor
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Abstract
The parallel disk type material property experimental provision that the material property based on shear mode, squeeze mode and its composite mode is detected is capable of achieving the present invention relates to a kind of, it includes one group of corresponding upper and lower parallel discs and pc machines, the sliding block that can be moved up and down along rack rail by extruding loading motor drive connection, it is installed in the decelerator by shearing loading motor drive connection of sliding block lower end, the output shaft of decelerator is fixedly connected with described upper parallel discs, and the lower end of described lower parallel discs passes sequentially through torque sensor and pressure sensor is installed on the base of L-shaped rack；Linear displacement transducer on described sliding block, angular displacement sensor, torque sensor and pressure sensor on reducer output shaft are communicated with pc machines by data collecting card be connected respectively, and extruding loading motor and shearing loading motor control to be connected by driver and pc machines respectively.Can realize that the stable state under shear mode, squeeze mode and the composite mode of multiple material is tested with dynamic material property on the apparatus.
Description
Technical field
It is particularly a kind of to be capable of achieving based on shear mode, squeeze the present invention relates to the experimental facilities of material dynamic mechanical analysis
The material property experimental provision of die pressing type and its composite mode.
Background technology
Different according to test mode in material property experiment, material property mainly has based on shear mode and based on crowded
The detection methods such as die pressing type.Method of testing based on shear mode is to apply two parallel discs (or cylinder) of coaxial rotating,
Measured material is placed between two disks, tested elastomer is born shearing force using the relative rotation of two disks, using torque sensor
The torque of transmission is detected, shear stress and corresponding shear rate is obtained, apparent viscosity or storage modulus, damage is further obtained
Consumption modulus.Method of testing based on squeeze mode is to do relative pulling open and approach using parallel disk to move, and is made in pressure
Different degrees of compression is had with lower measured matter, the elastic performance of elastomer is measured.
Experimental facilities at present in the world for shear mode, squeeze mode is varied, but diversity exists only in biography
The structures such as sensor arrange and difference present on type of drive that the principle tested is almost identical.Current few experiments
Equipment can be extruded and be sheared the material property experiment of Combined-operating mode and can be carried out material by the limitation of experimental provision
The material ranges of experiment are smaller.In addition, the stream for intellectual material (magnetic flow liquid, magnetic rheology elastic body etc.) under squeezing action
Become the research of performance still in the primary stage.
The content of the invention
It is an object of the invention to overcome the limitation of current material property experimental facilities, propose that one kind can be carried out various
The parallel disk type material property experimental provision of material property experiment.Be capable of achieving the extrusion experiment of elastomeric material, stable state with it is dynamic
The intellectual materials such as extrusion shearing complication experiment and magnetic flow liquid, magnetic rheology elastic body under shearing experiment and different pretightning forces
Shearing and the experiment of extruding mode of operation.
Parallel disk type material property experimental provision of the present invention, including one group of corresponding upper parallel discs, lower parallel discs and pc machines；
In the fixed extruding loading motor in the upper end of a L-shaped rack, it is installed in and is set on the vertical guide rail of frame and can be moved along the guide rail
Sliding block, the output shaft for extruding loading motor is connected by shaft coupling and screw pair with slider-actuated；In the lower end of sliding block
Fixed one by shearing loading motor drive connection decelerator, the output shaft of decelerator is fixedly connected with described upper parallel discs, institute
The lower end of the lower parallel discs stated passes sequentially through torque sensor and pressure sensor is installed on the base of L-shaped rack；
Linear displacement transducer is provided with described sliding block, angular displacement sensor is provided with the output shaft of decelerator；
Described torque sensor, pressure sensor, linear displacement transducer and angular displacement sensor pass through data respectively
Capture card is connected with the communication of pc machines, and described extruding loading motor and shearing loading motor is controlled by driver with pc machines respectively
Connection.
Also include the linear hall sensor that is embedded in down in parallel panel surface be nested with respectively upper parallel discs, under it is parallel
Two magnetizing coils for being electrically connected with dc source respectively of disk periphery, linear hall sensor is by data collecting card and pc machines
Communication connection.
Described upper and lower parallel discs are prepared by permeability magnetic material.
Following material property experiment detection can be realized using parallel disk type material property experimental provision of the present invention：
Material property under the material detrusion such as rubber, pitch；
Material property under the material crimp such as rubber, pitch；
The materials such as rubber, pitch are simultaneously by the material property under detrusion and crimp；
Material property under the material detrusion such as magnetic flow liquid, magnetic rheology elastic body；
Material property under the material crimp such as magnetic flow liquid, magnetic rheology elastic body；
Magnetic flow liquid, magnetic rheology elastic body etc. are simultaneously by the material property under detrusion and crimp.
The present invention has advantage following prominent：
1) parallel disk type material property experimental provision of the present invention is vdiverse in function, has the ability to realize shear mode, squeeze mode
Deng the material property experiment under multiple-working mode composite means.
2) present invention experiment is applied widely.Both elasticity, the material of viscoelastic material (such as rubber, pitch) can have been met
Characteristic research requirement, has the ability to carry out the material property experiment of the intellectual materials such as magnetic flow liquid, magnetic rheology elastic body again.
3) experimental provision of the present invention due to magnetizing coil, the introducing of linear hall sensor and arrangement can meet magnetorheological
The shearing and extruding of the intellectual materials such as liquid, magnetic rheology elastic body, the research requirement of stretching (under strong magnetic field circumstance) mode of operation, protect
Card magnetic induction intensity direction is all the time perpendicular to the direction of rotation of upper and lower parallel discs, and the magnetic induction intensity excursion that can be provided
Greatly, change accurate, rapid.
Brief description of the drawings
Fig. 1 is a kind of front view of parallel disk type material property experimental provision；
Fig. 2 is a kind of side view of parallel disk type material property experimental provision；
Fig. 3 is the front view of another parallel disk type material property experimental provision structure；
Fig. 4 is the partial structural diagram of lower parallel discs 9 shown in Fig. 1.
Specific embodiment
The present invention is described in further detail below in conjunction with the embodiment that accompanying drawing is given.
Embodiment 1
With reference to Fig. 1 and 2, a kind of parallel disk type material property experimental provision, including it is one group of corresponding upper parallel discs 8, lower flat
Row disk 9 and pc machines；In the fixed extruding loading motor 1 in the upper end of a L-shaped rack 12, it is installed on the vertical guide rail 5 of frame 12
The sliding block 4 that can be moved along the guide rail is set, and the output shaft for extruding loading motor 1 passes through shaft coupling 2 and screw pair 3 and sliding block
4 drive connections；The lower end of sliding block 4 fixed by the drive connection of shearing loading motor 6 decelerator 7, the output shaft of decelerator 7
It is fixedly connected with described upper parallel discs 8, the lower end of described lower parallel discs 9 passes sequentially through torque sensor 10 and pressure sensor
11 are installed on the base of L-shaped rack 12；
Linear displacement transducer 13 is provided with described sliding block 4, angle displacement transducer is provided with the output shaft of decelerator 7
Device 14；
Described torque sensor 10, pressure sensor 11, linear displacement transducer 13 and angular displacement sensor 14 are distinguished
Communicated with pc machines by data collecting card and be connected, described extruding loading motor 1 and shearing loading motor 6 passes through driver respectively
It is connected with the control of pc machines.
The operation principle of this experimental provision is：By extruding the driving of loading motor 1, parallel discs 8 are made to move up and down reality
The now extruding of the measured material sample to being placed between upper and lower parallel discs；By shearing the driving of loading motor 6, make flat
Row disk 8 does the shearing that measured material sample is realized in horizontal rotation motion, is capable of achieving following material property test.
First, squeeze mode experiment：
A. the service behaviour of detection of straight lines displacement transducer and pressure sensor, and the demarcation work of sensor is carried out in advance
Make；
B. measured material is placed on lower parallel discs, adjusts the attitude of measured material；
C. extruding loading motor is driven, parallel discs highly make it keep contacting with measured material in adjustment；
D. drive extruding loading motor to make parallel discs further decline to extrude fluid to be measured, three kinds can be used
Different energisation modes：1. with extrusion load as control model, sample is loaded with certain loading velocity, sample deformation
Amount is unloaded after certain hour is kept when reaching preset value.2. with displacement as control model, control main frame is according to setting program short
(such as 5s) extruded sample makes its strain reach preset value in time, and rational time step collection pressure sensor letter is chosen thereafter
Number until experiment terminate.3. with displacement as control model, setting control main frame program makes parallel discs with slowly uniform loading
Speed loads a Static Correction to sample, and the racking strain of sinusoidal signal is applied in this, as equilbrium position.
E. observation experiment phenomenon and in control main frame record linear displacement transducer, the change in electric of pressure sensor
Rule, obtains the Changing Pattern of respective material parameter.
2nd, shear mode experiment：
A. the service behaviour of detection of straight lines displacement transducer, angular displacement sensor and torque sensor, and biography is carried out in advance
The staking-out work of sensor；
B. measured material is placed on lower parallel discs, adjusts the attitude of measured material, make the geometric center of tested sample
Axis with upper and lower parallel discs overlaps；
C. extruding loading motor is driven, parallel discs highly make it be contacted with measured material and apply certain pretension in adjustment
Power, prevents material and wall slippage occur in shear history.Shearing loading motor is driven, can apply different to upper parallel discs
Pumping signal：1. the angular displacement of above parallel discs be control model, control main frame according to setting program in a short time (such as 5s)
Shearing sample makes its strain reach preset value, and rational time step collection torque sensor signal is chosen thereafter until experiment is tied
Beam.2. the angular displacement of above parallel discs is control model, and setting control main frame program makes parallel discs apply one to sample just
The shear strain of string signal.
D. observation experiment phenomenon and in control main frame record linear displacement transducer, torque sensor, angle displacement transducer
The Changing Pattern of device electric signal；
3rd, extrusion shearing composite mode experiment：
A. the service behaviour of detection of straight lines displacement transducer, pressure sensor, angular displacement sensor and torque sensor, and
The staking-out work of sensor is carried out in advance；
B. measured material is placed on lower parallel discs, adjust the attitude of measured material make the geometric center of tested sample with
The axis of upper and lower parallel discs overlaps；
C. extruding loading motor is driven, parallel discs highly make it be contacted with measured material in adjustment.Extruding is now driven to add
Motor and shearing loading motor are carried, upper parallel discs can be applied with the composite signal of different extruding and shearing excitation (as extruded
Shown in operating mode and shearing working condition experimenting method), cause that measured material produces shearing, extruding using the relative motion of upper and lower parallel discs
Deformation.
D. observation material is sheared and the experimental phenomena that extrudes and record linear displacement transducer, moment of torsion in control main frame
Sensor, pressure sensor, the Changing Pattern of angular displacement sensor electric signal；
Embodiment 2
Reference picture 3,4, sets up arranged below in the structure of embodiment 1, is capable of achieving magnetic flow liquid, magnetic rheology elastic body etc.
The material property experiment of intellectual material.That is, cover including the linear hall sensor 15 that is embedded on the surface of lower parallel discs 9 and respectively
Two magnetizing coils 16 for being electrically connected with dc source respectively in upper parallel discs 8, the periphery of lower parallel discs 9 are put, linear Hall is passed
Sensor 15 is communicated with pc machines by data collecting card and is connected.Described upper and lower parallel discs are prepared by permeability magnetic material.
Under the constructional device, by extruding the driving of loading motor 1, parallel discs 8 are made to move up and down realization to placing
The extruding of the measured material sample between upper and lower parallel discs；By shearing the driving of loading motor 6, parallel discs 8 are made to do water
The shearing of measured material sample is realized in flat gyration, while excitation coil 16 accesses stable DC circuit to produce magnetic field, is made
Measured material is in all the time to be stablized and perpendicular to the magnetic field of upper and lower parallel discs direction of rotation relatively.Following material property is capable of achieving to survey
Examination：
First, squeeze mode experiment：
A. the service behaviour of detection of straight lines displacement transducer and pressure sensor, and the demarcation work of sensor is carried out in advance
Make；
B. measured material is placed on lower parallel discs, adjusts the attitude of measured material.Install coil, coil support, branch additional
Post.Two coils are passed through with same direction current using dc source, coil connection can parallel connection can connect.Change is passed through the electric current of coil
Size, realizes the change of two parallel discs gap location magnetic field intensities, and measure in two parallel dish gaps by linear hall sensor
Magnetic field intensity.
C. extruding loading motor is driven, parallel discs highly make it keep contacting with measured material in adjustment；
D. drive extruding loading motor to make parallel discs further decline to extrude fluid to be measured, three kinds can be used
Different energisation modes：1. with extrusion load as control model, sample is loaded with certain loading velocity, sample deformation
Amount is unloaded after certain hour is kept when reaching preset value.2. with displacement as control model, control main frame is according to setting program short
(such as 5s) extruded sample makes its strain reach preset value in time, and rational time step collection pressure sensor letter is chosen thereafter
Number until experiment terminate.3. with displacement as control model, setting control main frame program makes parallel discs with slowly uniform loading
Speed loads a Static Correction to sample, and the racking strain of sinusoidal signal is applied in this, as equilbrium position.
E. observation experiment phenomenon and in control main frame record linear displacement transducer, the change in electric of pressure sensor
Rule, obtains the Changing Pattern of respective material parameter.
2nd, shear mode experiment：
A. the service behaviour of detection of straight lines displacement transducer, angular displacement sensor and torque sensor, and biography is carried out in advance
The staking-out work of sensor；
B. measured material is placed on lower parallel discs, adjusts the attitude of measured material, make the geometric center of tested sample
Axis with upper and lower parallel discs overlaps.Two coils are passed through with same direction current using dc source, coil connection can parallel connection can go here and there
Connection.Change is passed through the size of current of coil, realizes the change of two parallel discs gap location magnetic field intensities, and sense by linear Hall
Device measures the magnetic field intensity in two parallel dish gaps.
C. extruding loading motor is driven, the upper parallel discs of the suitably adjustment of the viscosity characteristicses according to magnetorheological materials highly, are prevented
Occur material and wall slippage in shear history.Shearing loading motor is driven, can upper parallel discs be applied with different excitation letters
Number：1. the angular displacement of above parallel discs is control model, and control main frame is according to setting program (such as 5s) shearing examination in a short time
Sample makes its strain reach preset value, and rational time step collection torque sensor signal is chosen thereafter until experiment terminates.②
The angular displacement of above parallel discs is control model, and setting control main frame program makes parallel discs apply a sinusoidal signal to sample
Shear strain.
D. observation experiment phenomenon and in control main frame record linear displacement transducer, torque sensor, angle displacement transducer
The Changing Pattern of device electric signal；
3rd, extrusion shearing composite mode experiment：
A. the service behaviour of detection of straight lines displacement transducer, pressure sensor, angular displacement sensor and torque sensor, and
The staking-out work of sensor is carried out in advance；
B. measured material is placed on lower parallel discs, adjust the attitude of measured material make the geometric center of tested sample with
The axis of upper and lower parallel discs overlaps.Two coils are passed through with same direction current using dc source, coil connection can parallel connection can connect.
Change is passed through the size of current of coil, realizes the change of two parallel discs gap location magnetic field intensities, and by linear hall sensor
Measure the magnetic field intensity in two parallel dish gaps；
C. extruding loading motor is driven, the upper parallel discs of the suitably adjustment of the viscosity characteristicses according to magnetorheological materials highly, make it
Contacted with measured material.Extruding loading motor and shearing loading motor are now driven, can upper parallel discs be applied with different squeezing
Pressure and the composite signal of shearing excitation, cause that measured material produces shearing, crimp using the relative motion of upper and lower parallel discs；
D. observation material is sheared and the experimental phenomena that extrudes and record linear displacement transducer, moment of torsion in control main frame
Sensor, pressure sensor, the Changing Pattern of angular displacement sensor electric signal.
Claims (3)
1. a kind of parallel disk type material property experimental provision, including one group of corresponding upper parallel discs（8）, lower parallel discs（9）And pc
Machine, it is characterised in that：
In a L-shaped rack（12）Upper end it is fixed one extruding loading motor（1）, it is installed in frame（12）Vertical guide rail（5）On
The sliding block that can be moved along the guide rail is set（4）, extrude loading motor（1）Output shaft pass through shaft coupling（2）And screw pair
（3）With sliding block（4）Drive connection；In sliding block（4）Lower end fixed by shearing loading motor（6）The decelerator of drive connection
（7）, decelerator（7）Output shaft and described upper parallel discs（8）It is fixedly connected with, described lower parallel discs（9）Lower end lead to successively
Cross torque sensor（10）And pressure sensor（11）It is installed in L-shaped rack（12）Base on；
In described sliding block（4）It is provided with linear displacement transducer（13）, in decelerator（7）Output shaft be provided with angular displacement biography
Sensor（14）；
Described torque sensor（10）, pressure sensor（11）, linear displacement transducer（13）And angular displacement sensor（14）
Communicated with pc machines by data collecting card respectively and be connected, described extruding loading motor（1）With shearing loading motor（6）Lead to respectively
Device of overdriving is connected with the control of pc machines.
2. parallel disk type material property experimental provision according to claim 1, it is characterised in that：Also include being embedded in lower putting down
Row disk（9）Linear hall sensor on surface（15）It is nested with respectively in upper parallel discs（8）, lower parallel discs（9）The two of periphery
The individual magnetizing coil for being electrically connected with dc source respectively（16）, linear hall sensor（15）Led to by data collecting card and pc machines
News connection.
3. parallel disk type material property experimental provision according to claim 2, it is characterised in that described upper and lower parallel discs
Prepared by permeability magnetic material.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105445119B (en) * | 2015-11-13 | 2018-01-12 | 长安大学 | A kind of test device and method of asphalt anti-torsion and cutting performance |
| CN110487672A (en) * | 2019-08-08 | 2019-11-22 | 上海理工大学 | A kind of device for measuring force measuring yield bearing stress after magnetorheological fluid magnetizes |
| CN110873646B (en) * | 2019-12-03 | 2021-04-23 | 中国航空综合技术研究所 | System and method for testing storage modulus and loss modulus of O-shaped ring |
| CN113484165B (en) * | 2021-07-30 | 2024-04-09 | 中国航空工业集团公司济南特种结构研究所 | Efficient test method for shearing mechanical property of composite material |
Citations (4)
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|---|---|---|---|---|
| JP2009276263A (en) * | 2008-05-16 | 2009-11-26 | Daipura Uintesu Kk | Evaluation device of mechanical property of material, and cutting device |
| CN201555779U (en) * | 2009-10-23 | 2010-08-18 | 北京工业大学 | Repeated load test device under composite stress |
| CN104596848A (en) * | 2015-01-16 | 2015-05-06 | 南京航空航天大学 | Load test device |
| CN204705536U (en) * | 2015-06-29 | 2015-10-14 | 吉林大学 | Parallel disk type material behavior experimental provision |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009276263A (en) * | 2008-05-16 | 2009-11-26 | Daipura Uintesu Kk | Evaluation device of mechanical property of material, and cutting device |
| CN201555779U (en) * | 2009-10-23 | 2010-08-18 | 北京工业大学 | Repeated load test device under composite stress |
| CN104596848A (en) * | 2015-01-16 | 2015-05-06 | 南京航空航天大学 | Load test device |
| CN204705536U (en) * | 2015-06-29 | 2015-10-14 | 吉林大学 | Parallel disk type material behavior experimental provision |
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