CN111999170A - Novel magnetorheological elastomer normal force test platform - Google Patents
Novel magnetorheological elastomer normal force test platform Download PDFInfo
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- CN111999170A CN111999170A CN202011037093.7A CN202011037093A CN111999170A CN 111999170 A CN111999170 A CN 111999170A CN 202011037093 A CN202011037093 A CN 202011037093A CN 111999170 A CN111999170 A CN 111999170A
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- G01—MEASURING; TESTING
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- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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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
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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Abstract
The invention relates to a novel magnetorheological elastomer normal force testing platform, which comprises a power part, a testing part and a control part, wherein the power part comprises: the power part comprises a motor and a ball screw mechanism, the testing part comprises a magnetic conduction base, a magnetic conduction cross beam, a magnetic core column, a coil, an upper magnetic conduction shell, a lower magnetic conduction column, a pressure sensor and an extrusion rod mechanism, the magnetic conduction base and the magnetic conduction cross beam are oppositely and fixedly arranged, the upper end of the upper magnetic conduction shell is fixedly connected with the magnetic conduction cross beam, and the lower end of the lower magnetic conduction column is fixedly connected with the magnetic conduction base; the upper magnetic conduction shell is connected with the lower magnetic conduction column through the magnetorheological elastomer. Because the magnetic conduction base and the magnetic conduction cross beam are relatively fixed, the gap distance between the upper magnetic conduction shell and the lower magnetic conduction column (the gap is filled with the magnetorheological elastomer) is also fixed, so that the distance between the upper magnetic pole and the lower magnetic pole of the magnetorheological elastomer is fixed along with the compression of the magnetorheological elastomer, and the constancy of the magnetic field in the magnetorheological elastomer is ensured.
Description
Technical Field
The invention relates to the field of intelligent material performance testing, in particular to a novel normal force testing platform for a magnetorheological elastomer.
Background
The magnetorheological elastomer is a novel intelligent material. The material consists of magnetic particles, a matrix and an additive, wherein the magnetic particles are distributed in a chain shape along the direction of a magnetic field under the action of the magnetic field, and macroscopically show that normal force and shearing force are output, so that the modulus of the material can be changed along with the intensity of an external magnetic field. Compared with magnetorheological fluid, the magnetorheological elastomer has the characteristics of controllability, reversibility, sensitive response and the like, and also has the advantage of good stability. The magnetorheological elastomer can be applied to vibration reduction and noise reduction control in various engineering fields.
The most important characteristic of the magnetorheological elastomer is the magnetic control characteristic, namely, the change of the modulus of the magnetorheological elastomer is controlled by changing the magnetic field intensity. The working modes of the magnetorheological elastomer are divided into a shearing mode and a compression mode, wherein the magnetic control performance test under the compression mode is the most difficult. The existing platform for testing the compression performance of the magnetorheological elastomer has the following defects: 1. in the process of compressing the magnetorheological elastomer, the distance between the upper magnetic pole and the lower magnetic pole is changed, so that the measured magnetic induction intensity is inaccurate; 2. a universal material testing machine is generally selected as a power device of the existing testing platform, and huge financial and material resources are consumed.
Disclosure of Invention
In order to solve the above problems, the present invention provides a novel magnetorheological elastomer normal force testing platform, which comprises a power part, a testing part and a control part:
the power part comprises a motor and a ball screw mechanism, and the motor is electrically connected with the control part;
the testing part comprises a magnetic conduction base, a magnetic conduction cross beam, a magnetic core column, a coil, an upper magnetic conduction shell, a lower magnetic conduction column, a pressure sensor and an extrusion rod mechanism, the motor is in driving connection with the extrusion rod mechanism through the ball screw mechanism, and the motor converts the rotary motion of the motor into the vertical linear motion of the extrusion rod mechanism through the ball screw mechanism;
the magnetic conduction base and the magnetic conduction cross beam are oppositely and fixedly arranged, the upper end and the lower end of the magnetic core column are respectively and fixedly connected with the magnetic conduction cross beam and the magnetic conduction base, the coil is wound on the magnetic core column, and the controller is connected with the coil and used for inputting current to the coil; the upper end of the upper magnetic conduction shell is fixedly connected with the magnetic conduction cross beam, and the lower end of the lower magnetic conduction column is fixedly connected with the magnetic conduction base; the upper magnetic conduction shell is connected with the lower magnetic conduction column through the magnetorheological elastomer;
the pressure sensor is arranged on the extrusion rod mechanism, is connected with the control part, and is used for acquiring the stress information of the magnetorheological elastomer and sending the stress information to the control part;
the upper magnetic conductive shell is provided with a Tesla probe hole for extending a Tesla probe into, and the Tesla probe is electrically connected with the control part;
the extrusion rod mechanism penetrates through the magnetic conduction cross beam and extends into the upper magnetic conduction shell to be used for compressing the magnetorheological elastomer.
Preferably, the ball screw mechanism comprises a ball screw support, a guide rail, a sliding block, a screw and a screw nut, the screw is vertically and rotatably arranged on the ball screw support, the guide rail is vertically and fixedly arranged on the ball screw support, and the sliding block is movably sleeved on the guide rail; the screw nut is arranged on the screw and fixedly connected with the sliding block.
Preferably, a rectangular bracket is fixedly arranged on the upper end surface of the ball screw support, and the motor is fixed on the upper end surface of the rectangular bracket; the output shaft of the motor is connected with the lead screw through a coupler, and the coupler is arranged in the rectangular support.
Preferably, a first groove and a second groove are respectively arranged on two sides of the lower end face of the magnetic conduction cross beam, and the upper end of the magnetic core column is embedded into the first groove and fastened through a threaded fastener; the upper end of the upper magnetic conduction shell is embedded into the second groove and is fastened through a threaded fastener;
a third groove corresponding to the first groove and a fourth groove corresponding to the second groove are respectively arranged on two sides of the upper end surface of the magnetic conduction base, and the lower end of the magnetic core column is embedded into the third groove and fastened through a threaded fastener; the lower end of the lower magnetic conduction column is embedded into the fourth groove and is fastened through a threaded fastener;
the middle part of the magnetic core column is provided with an annular groove, and the coil is wound in the annular groove;
the magnetic conduction cross beam is also provided with a first through hole for the extrusion rod mechanism to pass through;
the upper magnetic conduction shell is a hollow shell, a second through hole for the extrusion rod mechanism to pass through is formed in the upper end of the upper magnetic conduction shell, a third through hole for installing a magnetorheological elastomer is formed in the lower end of the upper magnetic conduction shell, and the first through hole, the second through hole, the third through hole and the hollow part of the upper magnetic conduction shell are communicated;
the upper end of the lower magnetic conduction column is provided with a convex column, the middle of the magnetorheological elastomer is provided with a central hole, the convex column is embedded into the central hole during testing, the upper end of the magnetorheological elastomer is embedded into the first through hole, and the lower end of the extrusion mechanism sequentially penetrates through the first through hole and the second through hole to compress the magnetorheological elastomer.
Preferably, the tesla probe hole is communicated with the side surface of the upper magnetic conductive shell and is communicated with the third through hole.
Preferably, the extrusion rod mechanism comprises an extrusion rod and an extrusion disc, the extrusion rod is vertically arranged, the upper end of the extrusion rod is fixedly connected with the screw nut, and the lower end of the extrusion rod penetrates through the first through hole and the second through hole; the extrusion disc is fixedly arranged at the lower end of the extrusion rod, is positioned in the hollow part of the upper magnetic conduction shell and is used for compressing the magnetorheological elastomer.
Preferably, the screw nut is fixedly connected with the sliding block through an L-shaped support, the L-shaped support comprises a transverse plate and a vertical plate which are integrally connected, the back surface of the vertical plate is respectively fixedly connected with the screw nut and the sliding block, the transverse plate is fixedly arranged at the lower end of the vertical plate, and the pressure sensor is arranged between the transverse plate and the extrusion rod.
Preferably, the extrusion rod and the extrusion disc are both made of non-magnetic conductive high-strength materials.
Preferably, the magnetic conduction base, the magnetic conduction cross beam, the magnetic core column, the upper magnetic conduction shell and the lower magnetic conduction column are all made of pure iron with high magnetic conductivity, high magnetic saturation intensity and low remanence rate.
Preferably, the control unit is connected to the coil through a transformer.
Compared with the prior art, the invention has the following technical effects:
1. in the invention, because the magnetic conduction base and the magnetic conduction beam are relatively fixed, the gap distance between the upper magnetic conduction shell and the lower magnetic conduction column (the gap is filled with the magnetorheological elastomer) is also fixed, so the distance between the upper magnetic pole and the lower magnetic pole of the magnetorheological elastomer is fixed along with the compression of the magnetorheological elastomer, and the constancy of the magnetic field in the magnetorheological elastomer is ensured.
2. Compared with the traditional universal material testing machine, the ball screw transmission principle is adopted, and a large amount of financial resources and material resources are saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:
FIG. 1 is a schematic structural diagram of a novel magnetorheological elastomer normal force testing platform according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a power section provided in a preferred embodiment of the present invention;
FIG. 3 is an exploded view of the power section provided in the preferred embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a testing part according to a preferred embodiment of the present invention;
fig. 5 is an exploded view of a structure of a test part according to a preferred embodiment of the present invention.
Detailed Description
The following will describe in detail a novel magnetorheological elastomer normal force testing platform provided by the present invention with reference to fig. 1 to 5, which is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following examples, and those skilled in the art can modify and decorate the platform without changing the spirit and content of the present invention.
Referring to fig. 1 to 5, a novel magnetorheological elastomer normal force testing platform includes a power portion 1, a testing portion 2 and a control portion, wherein the power portion 1 and the testing portion 2 are sequentially disposed up and down:
the power part 1 comprises a motor 101 and a ball screw mechanism 104, and the motor 101 is electrically connected with the control part;
the testing part 2 comprises a magnetic conduction base 205, a magnetic conduction cross beam 208, a magnetic core column 206, a coil 207, an upper magnetic conduction shell 203, a lower magnetic conduction column 204, a pressure sensor 209 and a squeezing rod mechanism 201, the motor 101 is in driving connection with the squeezing rod mechanism 201 through the ball screw mechanism 104, and the motor 101 converts the rotary motion of the motor into the vertical linear motion of the squeezing rod mechanism 201 through the ball screw mechanism 104;
the magnetic conductive base 205 and the magnetic conductive cross beam 208 are relatively and fixedly arranged, the upper end and the lower end of the magnetic core column 206 are respectively and fixedly connected with the magnetic conductive cross beam 208 and the magnetic conductive base 205, the coil 207 is wound on the magnetic core column 206, and the controller is connected with the coil 207 and is used for inputting current to the coil 207; the upper end of the upper magnetic conduction shell 203 is fixedly connected with the magnetic conduction cross beam 205, and the lower end of the lower magnetic conduction column 204 is fixedly connected with the magnetic conduction base 205; the upper magnetic conduction shell 203 is connected with the lower magnetic conduction column 204 through the magneto-rheological elastomer 202 (when the magneto-rheological elastomer 202 is not arranged on the test platform, the upper magnetic conduction shell 203 is not in contact with the lower magnetic conduction column 204; when the magneto-rheological elastomer 202 is arranged on the test platform, the magneto-rheological elastomer 202 is respectively connected with the upper magnetic conduction shell 203 and the lower magnetic conduction column 204);
the pressure sensor 209 is arranged on the extrusion rod mechanism 201, connected with the control part, and used for acquiring stress information of the magnetorheological elastomer 202 and sending the stress information to the control part;
a tesla probe hole 2031 for inserting a tesla probe is formed in the upper magnetic conductive shell 203, and the tesla probe is electrically connected with the control part;
the extrusion rod mechanism 201 penetrates through the magnetic conduction cross beam 208 and extends into the upper magnetic conduction shell 203, and is used for compressing the magnetorheological elastomer 202.
In this embodiment, the ball screw mechanism 104 includes a ball screw support 1042, a guide rail 1043, a slider 1044, a screw 1041, and a screw nut 1046, where the screw 1041 is vertically and rotatably disposed on the ball screw support 1042, the guide rail 1043 is vertically and fixedly disposed on the ball screw support 1042, and the slider 1044 is movably sleeved on the guide rail 1043; the screw nut 1046 is arranged on the screw 1041 and is fixedly connected with the slider 1044, the motor rotates to drive the screw 1041 to rotate, and the screw nut 1046 moves linearly.
A rectangular bracket 103 is fixedly arranged on the upper end surface of the ball screw support 1042, and the motor 101 is fixed on the upper end surface of the rectangular bracket 103; an output shaft of the motor 101 is connected with the lead screw 1041 through a coupler 102, the coupler 102 is arranged in the rectangular support 103, the output shaft of the motor 101 penetrates through the upper end face of the rectangular support 103 to be fixedly connected with the upper end of the coupler 102, and the upper end of the lead screw 1041 penetrates through the lower end face of the rectangular support 103 to be fixedly connected with the lower end of the coupler 102.
The magnetic conduction base 205 is fixedly disposed on the ball screw support 1042, in this embodiment, the ball screw support 1042 includes an upper end plate, a middle side plate and a lower end plate which are integrally connected, and two ends of the middle side plate are fixedly disposed on the same side of the upper end plate and the lower end plate. The rectangular support 103 is fixedly arranged on the upper end face of the upper end plate, and the magnetic conduction base 205 is fixedly arranged on the upper end face of the lower end plate.
A first groove and a second groove are respectively formed in two sides of the lower end face of the magnetic conduction cross beam 208, and the upper end of the magnetic core column 206 is embedded into the first groove and fastened through a threaded fastener; the upper end of the upper magnetic conduction shell 203 is embedded into the second groove and is fastened through a threaded fastener;
a third groove corresponding to the first groove and a fourth groove corresponding to the second groove are respectively formed in two sides of the upper end surface of the magnetic conductive base 205, and the lower end of the magnetic core column 206 is embedded into the third groove and fastened through a threaded fastener; the lower end of the lower magnetic conduction column 204 is embedded into the fourth groove and is fastened through a threaded fastener;
an annular groove 2061 is formed in the middle of the magnetic core column 206, and the coil 207 is wound in the annular groove 2061;
the magnetic conduction cross beam 208 is further provided with a first through hole for the extrusion rod mechanism 201 to pass through;
the upper magnetic conduction shell 203 is a hollow shell, a second through hole for the extrusion rod mechanism 201 to pass through is formed in the middle of the upper end of the upper magnetic conduction shell 203, a third through hole for installing the magnetorheological elastomer 202 is formed in the middle of the lower end of the upper magnetic conduction shell 203, and the first through hole, the second through hole, the third through hole and the hollow part of the upper magnetic conduction shell 203 are communicated;
the upper end of the lower magnetic conducting column 204 is provided with a convex column 2041, the middle of the magnetorheological elastomer 202 is provided with a central hole (in this embodiment, the magnetorheological elastomer 202 is annular), the convex column 2041 is embedded into the central hole during testing, the upper end of the magnetorheological elastomer 202 is embedded into the first through hole, and the lower end of the extrusion mechanism sequentially penetrates through the first through hole and the second through hole to compress the magnetorheological elastomer 202.
The tesla probe hole 2031 is communicated with the side surface of the upper magnetic conduction shell 203 and is communicated with the third through hole.
The extrusion rod mechanism 201 comprises an extrusion rod 2011 and an extrusion disc 2012, the extrusion rod 2011 is vertically arranged, the upper end of the extrusion rod 2011 is fixedly connected with the lead screw nut 1046, and the lower end of the extrusion rod 2011 penetrates through the first through hole and the second through hole; the extrusion disc 2012 is fixedly arranged at the lower end of the extrusion rod 2011 and is located in the hollow part of the upper magnetic conductive shell 203, and the extrusion disc 2012 is located right above the magnetorheological elastomer 202 and is used for compressing the magnetorheological elastomer 202.
The invention is not particularly limited to the position of the pressure sensor 209, as long as the stress information of the magnetorheological elastomer 202 can be measured, for example, the stress information is set between the extrusion rod 2011 and the extrusion plate 2012, or between the lead screw nut 1046 and the extrusion rod 2011, taking the latter as an example, such as:
screw nut 1046 through an L type support 1045 with slider 1044 fixed connection, L type support 1045 includes integrative connection's diaphragm and riser, the back of riser respectively with screw nut 1046 and slider 1044 fixed connection, the diaphragm is fixed to be set up the lower extreme of riser, pressure sensor 209 sets up the diaphragm with between the extrusion pole 2011.
In this embodiment, the pressing rod 2011 and the pressing plate 2012 are both made of a non-magnetic high-strength material.
The magnetic conduction base 205, the magnetic conduction cross beam 208, the magnetic core column 206, the upper magnetic conduction shell 203 and the lower magnetic conduction column 204 are all made of pure iron with high magnetic conductivity, high magnetic saturation intensity and low remanence rate.
The magnetic base 205, the magnetic beam 208, the core column 206, the upper magnetic shell 203, the magnetorheological elastomer 202, and the lower magnetic column 204 form a closed magnetic circuit (the arrow direction in fig. 4 is the magnetic line direction), and two branch magnetic circuits are formed in the upper magnetic shell 203.
The control unit is connected to the coil 207 via a transformer, and the input voltage is changed by the transformer, thereby changing the current input to the annular magnetorheological elastomer 202.
During compression testing, the number of turns of rotation of the stepping motor 101 is controlled by the control part, the torque output by the stepping motor 101 is transmitted to the lead screw 1041 through the coupler 102, the lead screw 1041 rotates to drive the L-shaped support 1045 to vertically move downwards, the pressure sensor 209 is arranged on the L-shaped support 1045 and is connected with the extrusion rod 2011, the extrusion rod 2011 pushes the extrusion disc 2012 to compress the annular magnetorheological elastomer 202, at the moment, under the action of a magnetic field generated by input current, the magnetic particles in the annular magnetorheological elastomer 202 are distributed in a vertical chain shape, and normal reaction force is generated. The pressure sensor 209 collects pressure data of the annular magnetorheological elastomer 202, compression displacement data of the annular magnetorheological elastomer 202 is converted through the relation between the number of rotation turns of the stepping motor 101 and the displacement of the screw 1041, the magnitude of current input into the annular magnetorheological elastomer 202 is changed, the magnetic induction intensity of the annular magnetorheological elastomer 202 is measured by using a Tesla probe, a relation graph of compression displacement and pressure borne by the annular magnetorheological elastomer 202 under different magnetic induction intensities is obtained, a stress strain graph is further obtained, and the control part calculates numerical values of parameters such as zero-field elastic modulus, maximum elastic modulus, relative magnetorheological effect and the like of the annular magnetorheological elastomer 202, so that the normal force effect of the annular magnetorheological elastomer 202 is researched.
In the present invention, since the magnetic base 205 and the magnetic beam 208 are relatively fixed, the gap distance between the upper magnetic shell 203 and the lower magnetic column 204 (the gap is filled with the magnetorheological elastomer 202) is also fixed, and therefore, with the compression of the magnetorheological elastomer 202, the distance between the upper and lower magnetic poles of the magnetorheological elastomer 202 is fixed, thereby ensuring the constancy of the magnetic field in the magnetorheological elastomer 202.
Claims (10)
1. The utility model provides a novel magnetorheological elastomer normal force test platform which characterized in that, includes power portion, test portion and control portion:
the power part comprises a motor and a ball screw mechanism, and the motor is electrically connected with the control part;
the testing part comprises a magnetic conduction base, a magnetic conduction cross beam, a magnetic core column, a coil, an upper magnetic conduction shell, a lower magnetic conduction column, a pressure sensor and an extrusion rod mechanism, the motor is in driving connection with the extrusion rod mechanism through the ball screw mechanism, and the motor converts the rotary motion of the motor into the vertical linear motion of the extrusion rod mechanism through the ball screw mechanism;
the magnetic conduction base and the magnetic conduction cross beam are oppositely and fixedly arranged, the upper end and the lower end of the magnetic core column are respectively and fixedly connected with the magnetic conduction cross beam and the magnetic conduction base, the coil is wound on the magnetic core column, and the controller is connected with the coil and used for inputting current to the coil; the upper end of the upper magnetic conduction shell is fixedly connected with the magnetic conduction cross beam, and the lower end of the lower magnetic conduction column is fixedly connected with the magnetic conduction base; the upper magnetic conduction shell is connected with the lower magnetic conduction column through the magnetorheological elastomer;
the pressure sensor is arranged on the extrusion rod mechanism, is connected with the control part, and is used for acquiring the stress information of the magnetorheological elastomer and sending the stress information to the control part;
the upper magnetic conductive shell is provided with a Tesla probe hole for extending a Tesla probe into, and the Tesla probe is electrically connected with the control part;
the extrusion rod mechanism penetrates through the magnetic conduction cross beam and extends into the upper magnetic conduction shell to be used for compressing the magnetorheological elastomer.
2. The novel magnetorheological elastomer normal force test platform according to claim 1, wherein the ball screw mechanism comprises a ball screw support, a guide rail, a slider, a screw and a screw nut, the screw is vertically and rotatably arranged on the ball screw support, the guide rail is vertically and fixedly arranged on the ball screw support, and the slider is movably sleeved on the guide rail; the screw nut is arranged on the screw and fixedly connected with the sliding block.
3. The novel magnetorheological elastomer normal force test platform according to claim 2, wherein a rectangular bracket is fixedly arranged on the upper end surface of the ball screw support, and the motor is fixed on the upper end surface of the rectangular bracket; the output shaft of the motor is connected with the lead screw through a coupler, and the coupler is arranged in the rectangular support.
4. The novel magnetorheological elastomer normal force test platform according to claim 2, wherein a first groove and a second groove are respectively formed in two sides of the lower end surface of the magnetic conduction cross beam, and the upper end of the magnetic core column is embedded into the first groove and fastened through a threaded fastener; the upper end of the upper magnetic conduction shell is embedded into the second groove and is fastened through a threaded fastener;
a third groove corresponding to the first groove and a fourth groove corresponding to the second groove are respectively arranged on two sides of the upper end surface of the magnetic conduction base, and the lower end of the magnetic core column is embedded into the third groove and fastened through a threaded fastener; the lower end of the lower magnetic conduction column is embedded into the fourth groove and is fastened through a threaded fastener;
the middle part of the magnetic core column is provided with an annular groove, and the coil is wound in the annular groove;
the magnetic conduction cross beam is also provided with a first through hole for the extrusion rod mechanism to pass through;
the upper magnetic conduction shell is a hollow shell, a second through hole for the extrusion rod mechanism to pass through is formed in the upper end of the upper magnetic conduction shell, a third through hole for installing a magnetorheological elastomer is formed in the lower end of the upper magnetic conduction shell, and the first through hole, the second through hole, the third through hole and the hollow part of the upper magnetic conduction shell are communicated;
the upper end of the lower magnetic conduction column is provided with a convex column, the middle of the magnetorheological elastomer is provided with a central hole, the convex column is embedded into the central hole during testing, the upper end of the magnetorheological elastomer is embedded into the first through hole, and the lower end of the extrusion mechanism sequentially penetrates through the first through hole and the second through hole to compress the magnetorheological elastomer.
5. The novel magnetorheological elastomer normal force test platform of claim 4, wherein the Tesla probe hole is arranged on the side surface of the upper magnetic conductive shell in a communication manner and is communicated with the third through hole.
6. The novel magnetorheological elastomer normal force test platform according to claim 4, wherein the extrusion rod mechanism comprises an extrusion rod and an extrusion disc, the extrusion rod is vertically arranged, the upper end of the extrusion rod is fixedly connected with the lead screw nut, and the lower end of the extrusion rod penetrates through the first through hole and the second through hole; the extrusion disc is fixedly arranged at the lower end of the extrusion rod, is positioned in the hollow part of the upper magnetic conduction shell and is used for compressing the magnetorheological elastomer.
7. The novel magnetorheological elastomer normal force test platform of claim 6, wherein the screw nut is fixedly connected with the slider through an L-shaped support, the L-shaped support comprises a transverse plate and a vertical plate which are integrally connected, the back surface of the vertical plate is respectively fixedly connected with the screw nut and the slider, the transverse plate is fixedly arranged at the lower end of the vertical plate, and the pressure sensor is arranged between the transverse plate and the extrusion rod.
8. The novel magnetorheological elastomer normal force test platform according to claim 7, wherein the extrusion rod and the extrusion disk are both made of a non-magnetic conductive high-strength material.
9. The novel magnetorheological elastomer normal force test platform according to claim 8, wherein the magnetic base, the magnetic cross beam, the magnetic core column, the upper magnetic shell and the lower magnetic core column are all made of pure iron with high magnetic conductivity, high saturation strength and low remanence.
10. The novel magnetorheological elastomer normal force test platform according to claim 1, wherein the control part is connected with the coil through a transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011037093.7A CN111999170A (en) | 2020-09-27 | 2020-09-27 | Novel magnetorheological elastomer normal force test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011037093.7A CN111999170A (en) | 2020-09-27 | 2020-09-27 | Novel magnetorheological elastomer normal force test platform |
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| CN202011037093.7A Pending CN111999170A (en) | 2020-09-27 | 2020-09-27 | Novel magnetorheological elastomer normal force test platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112504112A (en) * | 2020-12-01 | 2021-03-16 | 西南石油大学 | Safety pipe ring and method for monitoring pipeline strain in mountainous area |
| CN113070868A (en) * | 2021-04-01 | 2021-07-06 | 沈阳工业大学 | Magnetic force driven parallel robot |
| CN113740150A (en) * | 2021-09-22 | 2021-12-03 | 哈尔滨工业大学 | Pretension adjustable magnetorheological elastomer shearing dynamic and static mechanics testing device |
| CN114166646A (en) * | 2021-11-26 | 2022-03-11 | 武汉理工大学 | Testing device and testing method for creep and relaxation characteristics of magnetorheological elastomer under wide magnetic field |
-
2020
- 2020-09-27 CN CN202011037093.7A patent/CN111999170A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112504112A (en) * | 2020-12-01 | 2021-03-16 | 西南石油大学 | Safety pipe ring and method for monitoring pipeline strain in mountainous area |
| CN112504112B (en) * | 2020-12-01 | 2022-04-05 | 西南石油大学 | Safety pipe ring and method for monitoring pipeline strain in mountainous area |
| CN113070868A (en) * | 2021-04-01 | 2021-07-06 | 沈阳工业大学 | Magnetic force driven parallel robot |
| CN113070868B (en) * | 2021-04-01 | 2024-05-24 | 沈阳工业大学 | Magnetically-driven parallel robot |
| CN113740150A (en) * | 2021-09-22 | 2021-12-03 | 哈尔滨工业大学 | Pretension adjustable magnetorheological elastomer shearing dynamic and static mechanics testing device |
| CN113740150B (en) * | 2021-09-22 | 2024-03-29 | 哈尔滨工业大学 | Magnetorheological elastomer shearing dynamic and static mechanical testing device with adjustable pre-tightening |
| CN114166646A (en) * | 2021-11-26 | 2022-03-11 | 武汉理工大学 | Testing device and testing method for creep and relaxation characteristics of magnetorheological elastomer under wide magnetic field |
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