CN108387447A - A kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision - Google Patents
A kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision Download PDFInfo
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- CN108387447A CN108387447A CN201810129231.0A CN201810129231A CN108387447A CN 108387447 A CN108387447 A CN 108387447A CN 201810129231 A CN201810129231 A CN 201810129231A CN 108387447 A CN108387447 A CN 108387447A
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- microsecond grade
- bar
- pulse motor
- electromagnetic driver
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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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- 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
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
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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
- G01N2203/003—Generation of the force
- G01N2203/0055—Generation of the force using mechanical waves, e.g. acoustic
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- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of electromagnetic type of present invention offer is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, is related to In Dynamic Testing of Materials apparatus field, including：Time distributior, time distributior are connected to high power constant-current source, and time distributior controls the power supply circuit opening time of electromagnetic driver and Microsecond grade pulse motor by high power constant-current source；High power constant-current source is connected to control electromagnetic driver and Microsecond grade pulse motor and powers to it；Test specimen, test specimen two ends are connected respectively to incident bar and transmission bar one end；Electromagnetic driver is connected to the other end of incident bar；Microsecond grade pulse motor is connected to the other end of transmission bar；Drawing/pressure pulse and torsional pulses independent propagation in bar in the present invention, it can measure respectively, by adjusting drawing/pressure pulse and torsional pulses arrival time also can get and first draw/press retrotorsion, first reverse after material under the different situations such as tension and compression load mechanical behavior, different stress states can be obtained.
Description
Technical field
The present invention relates to In Dynamic Testing of Materials apparatus fields more particularly to a kind of electromagnetic type to draw, pressure turns round microsecond
Grade synchronization combining dynamic load experimental provision.
Background technology
The mechanical behavior of material is to carry out the basis of all structure designs, and some material is in dynamic (explosion, punching
Hit) under mechanical behavior and its quasi-static lower mechanical behavior it is significantly different.On the other hand, the mechanical behavior of material with its residing for
Stress state is closely related.
Separate type Hopkinson pull rod and compression bar are that there is material dynamic mechanical performance under a kind of research one-dimensional stress state
Imitate experimental provision.Since Volterra in 1948, Kolsky invention split hopkinson press bar devices in 1949 were simultaneously ground with it
Study carefully under one-dimensional stress state since MATERIALS ' DYNAMIC Compressive Mechanical Properties, dynamic compression experiments technology is continuously improved.Separate type Hope
There are also impressive progresses for the gloomy pull rod of gold, or make one of the capital equipment of MATERIALS ' DYNAMIC tensile mechanical properties research at present.Material
The dynamic anti-shear performance of material is one of its dynamic mechanical, and research work relative difficult is tested to it, at present mainly still
It is carried out by separate type split-Hopkinson torsional bar.These three experimental provisions are compared, compression bar technology relative maturity, and pull rod and torsion bar skill
Art has not small room for improvement.
Material may be by the synergy of dynamic drawing/pressure and torsional load, under this synergy during military service
The behavior of the material necessarily very interested important research field of mechanics worker.But current dynamic drawing/pressure is carried with torsion
It is difficult to realize synchronize when the synergy of lotus.
Invention content
It is an object of the invention to overcome above-mentioned technological deficiency, providing one kind can realize that drawing (pressure) turns round what Microsecond grade synchronized
Joint dynamic load experimental provision.
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of electromagnetic type is drawn, pressure turns round Microsecond grade
Synchronization combining dynamic load experimental provision, including：
Time distributior, the time distributior are connected to high power constant-current source, and the time distributior passes through high-power
Constant-current source controls the power supply circuit opening time of electromagnetic driver and Microsecond grade pulse motor；
High power constant-current source is connected to control electromagnetic driver and Microsecond grade pulse motor and powers to it；
Test specimen, the test specimen two ends are connected respectively to incident bar and transmission bar one end；
Electromagnetic driver, is connected to the other end of incident bar, and the electromagnetic driver is led in the electric current of high power constant-current source
Longitudinal wave is generated after logical, which, which reaches incident bar and form stretching/compressing incident pulse wherein, is transmitted to test specimen；
Microsecond grade pulse motor is connected to the other end of transmission bar, and the Microsecond grade pulse motor is in high power constant-current source
Current lead-through after generate shear wave, and transmission bar is reached by the rotor of the Microsecond grade pulse motor and is transmitted to test specimen.
Preferably, the time distributior according to velocity of longitudinal wave, shear wave velocity, wave starting point to test specimen distance, Microsecond grade
The circuit parameter of pulse motor and electromagnetic driver, test type control electromagnetic driver and the confession of Microsecond grade pulse motor to determine
The circuit opening time.
Preferably, the longitudinal wave that the electromagnetic driver generates is to stretch or compress pulse.
Preferably, the shear wave that the Microsecond grade pulse motor generates is torsional pulses.
The present invention provides a kind of electromagnetic types to draw, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, drawing/pressure pulse
With torsional pulses in bar independent propagation, can measure, can also be obtained by adjusting drawing/pressure pulse and torsional pulses arrival time respectively
The mechanical behavior for obtaining the material after first drawing/pressing retrotorsion, first torsion under the different situations such as tension and compression load, can obtain different answer
Power state；The present invention preferably solves the problems, such as that drawing/pressure pulse is difficult to accurately reach test specimen simultaneously with torsional pulses, improves same
The level of step.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it is therefore apparent that the accompanying drawings in the following description is only this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structural schematic diagram of electromagnetic driver in the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In description of the invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal" or
Person's position relationship is orientation based on ... shown in the drawings or position relationship, is merely for convenience of describing this practicality and simplify to describe,
Rather than instruction either implies that signified device or element must have a particular orientation, with specific azimuth configuration and behaviour
Make, therefore is not considered as limiting the invention.In addition, " first ", " second ", " third ", " the 4th " are only used for description mesh
, and should not be understood as indicating or implying relative importance.
In description of the invention, it is also necessary to explanation, unless otherwise specific regulation and limitation, term " setting ", " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection can be mechanical connection, can also be electrical connection, can be directly connected to, and can also be to be connected by intermediary, can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Embodiment 1：
As shown in Figure 1, a kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, including：
Time distributior 1, the time distributior 1 are connected to high power constant-current source 2, and the time distributior 1 is by big
Power constant current source 2 controls the power supply circuit opening time of electromagnetic driver 3 and Microsecond grade pulse motor 7；
High power constant-current source 2 is connected to control electromagnetic driver 3 and Microsecond grade pulse motor 7 and powers to it；
Test specimen 5,5 both ends of the test specimen are connected respectively to 6 one end of incident bar 4 and transmission bar；
Electromagnetic driver 3 is connected to the other end of incident bar 4, electricity of the electromagnetic driver 3 in high power constant-current source 2
Longitudinal wave is generated after conductance is logical, which, which reaches incident bar 4 and form stretching/compressing incident pulse wherein, is transmitted to test specimen 5；Electromagnetism drives
The longitudinal wave that dynamic device 3 generates is to stretch or compress pulse.
Microsecond grade pulse motor 7 is connected to the other end of transmission bar 6, and the Microsecond grade pulse motor 7 is in high-power constant current
Shear wave is generated after the current lead-through in source 2, and transmission bar 6 is reached by the rotor of the Microsecond grade pulse motor 7 and is transmitted to test specimen 5,
The shear wave that Microsecond grade pulse motor 7 generates is torsional pulses.
Wherein, time distributior 1 according to velocity of longitudinal wave, shear wave velocity, wave starting point to test specimen 5 apart from, Microsecond grade pulse
The circuit parameter of motor 7 and electromagnetic driver 3, test type control electromagnetic driver 3 and the confession of Microsecond grade pulse motor 7 to determine
The circuit opening time.
After the preparations such as test specimen installation, test equipment debugging are ready, time distributior is according to velocity of longitudinal wave, shear wave speed
Degree, the starting point of wave arrive test specimen distance, the circuit parameter of Microsecond grade pulse motor and electromagnetic driver, test type (drawing/pressure and torsion
Turn simultaneously, first draw/press retrotorsion, first reverse post-tensioning/pressure) etc. determine both the power supply circuit opening time, start start button, electromagnetism
Driver generates stretching or compression pulse after current lead-through, which reaches incident bar and form stretching/compressing incidence wherein
Pulse is transmitted to test specimen, and reflection and transmission occur on test specimen and bar interface, and back wave returns to incident bar, and transmitted pulse enters transmission
Bar；Microsecond grade pulse motor generates torsional pulses after current lead-through, by its rotor reach transmission bar (for torsion be into
Penetrate bar) it is transmitted to test specimen, transmission, reflection occur on test specimen and bar interface, it (is transmission for torsion to be passed to incident bar respectively
Bar) and transmission bar (being incident bar for torsion).Drawing/pressure pulse and torsional pulses independent propagation in bar, measuring system can
Measure respective waveform respectively and store, according to Hopkinson bar data processing method handle to obtain drawing/pressure and torsion simultaneously (or
When different) effect stress-strain diagram, reach the requirement of experimental design.The present invention preferably solve material for test draw/
The problem of pressure pulse is difficult to accurately reach test specimen simultaneously with torsional pulses, improves synchronous level.
Embodiment 2：
As shown in Figure 1 and Figure 2, a kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, including：
Time distributior 1, time distributior 1 are connected to high power constant-current source 2, and time distributior 1 passes through high-power constant current
Source 2 controls the power supply circuit opening time of electromagnetic driver 3 and Microsecond grade pulse motor 7；High power constant-current source 2 is connected to electricity
Magnetic driven device 3 and Microsecond grade pulse motor 7 simultaneously power to it；5 both ends of test specimen are connected respectively to 6 one end of incident bar 4 and transmission bar；
Electromagnetic driver 3 is connected to the other end of incident bar 4, and electromagnetic driver 3 generates vertical after the current lead-through of high power constant-current source 2
Wave, which, which reaches incident bar 4 and form stretching/compressing incident pulse wherein, is transmitted to test specimen 5；Electromagnetic driver 3 generates vertical
Wave is to stretch or compress pulse.
Microsecond grade pulse motor 7 is connected to the other end of transmission bar 6, and Microsecond grade pulse motor 7 is in high power constant-current source 2
Current lead-through after generate shear wave, and transmission bar 6 is reached by the rotor of the Microsecond grade pulse motor 7 and is transmitted to test specimen 5, microsecond
The shear wave that grade pulse motor 7 generates is torsional pulses.Time distributior 1 according to velocity of longitudinal wave, shear wave velocity, wave starting point to examination
Part 5 determines control electromagnetic driver 3 apart from the circuit parameter of, Microsecond grade pulse motor 7 and electromagnetic driver 3, test type
With the 7 power supply circuit opening time of Microsecond grade pulse motor.
As shown in Fig. 2, electromagnetic driver 3 includes U-shaped iron, breakdown capacitance C, switch K, breakdown capacitance C is connected to U-shaped iron
Both ends, wherein breakdown one end capacitance C is connected to the breakdown capacitance C other ends, forming circuit through switch K, high power constant-current source.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (4)
1. a kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, which is characterized in that including：
Time distributior (1), the time distributior (1) are connected to high power constant-current source (2), and the time distributior (1) is logical
Excessive power constant-current source (2) controls the power supply circuit opening time of electromagnetic driver (3) and Microsecond grade pulse motor (7)；
High power constant-current source (2) is connected to control electromagnetic driver (3) and Microsecond grade pulse motor (7) and powers to it；
Test specimen (5), test specimen (5) both ends are connected respectively to incident bar (4) and transmission bar (6) one end；
Electromagnetic driver (3) is connected to the other end of incident bar (4), and the electromagnetic driver (3) is in high power constant-current source (2)
Current lead-through after generate longitudinal wave, which, which reaches incident bar (4) and form stretching/compressing incident pulse wherein, is transmitted to test specimen
(5)；
Microsecond grade pulse motor (7) is connected to the other end of transmission bar (6), and the Microsecond grade pulse motor (7) is in high power constant
Shear wave is generated after the current lead-through in stream source (2), and transmission bar (6) is reached by the rotor of the Microsecond grade pulse motor (7) and is passed
To test specimen (5).
2. a kind of electromagnetic type as described in claim 1 is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, feature
Be, the time distributior (1) according to velocity of longitudinal wave, shear wave velocity, wave starting point to test specimen (5) distance, Microsecond grade pulse
The circuit parameter of motor (7) and electromagnetic driver (3), test type control electromagnetic driver (3) and Microsecond grade pulse to determine
Motor (7) the power supply circuit opening time.
3. a kind of electromagnetic type as described in claim 1 is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, feature
It is, the longitudinal wave that the electromagnetic driver (3) generates is to stretch or compress pulse.
4. a kind of electromagnetic type as described in claim 1 is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision, feature
It is, the shear wave that the Microsecond grade pulse motor (7) generates is torsional pulses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810129231.0A CN108387447A (en) | 2018-02-08 | 2018-02-08 | A kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810129231.0A CN108387447A (en) | 2018-02-08 | 2018-02-08 | A kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision |
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| CN108387447A true CN108387447A (en) | 2018-08-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044352A (en) * | 2019-12-31 | 2020-04-21 | 太原理工大学 | Separated Hopkinson bar pressure and torsion load composite loading device and use method thereof |
| CN113702195A (en) * | 2021-07-15 | 2021-11-26 | 深圳大学 | Dynamic and static combined bidirectional electromagnetic loading compression shear experimental device and test method |
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| CN103994922A (en) * | 2014-04-25 | 2014-08-20 | 西北工业大学 | Stretching and compression stress wave generator based on electromagnetic force and experimental method |
| CN104729918A (en) * | 2015-03-11 | 2015-06-24 | 赵江霞 | Dynamic pull/pressing and torsion synchronous combined loading experiment device |
| CN204758411U (en) * | 2015-05-20 | 2015-11-11 | 西北工业大学 | Electromagnetic type hopkinson torsion bar loading device twists reverse rifle |
| CN105319124A (en) * | 2015-11-20 | 2016-02-10 | 华南理工大学 | Double-cartridge electromagnetic drive device used for split Hopkinson pressure bar |
| CN105651625A (en) * | 2016-01-06 | 2016-06-08 | 西北工业大学 | Loading device for disc type split-hopkinson torsional bar based on electromagnetic force and experimental method |
| CN106655674A (en) * | 2017-02-21 | 2017-05-10 | 中国人民解放军陆军军官学院 | Microsecond pulse torsional load motor |
| CN207964483U (en) * | 2018-02-08 | 2018-10-12 | 合肥姜水材性科技有限公司 | A kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision |
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2018
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Patent Citations (7)
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| CN103994922A (en) * | 2014-04-25 | 2014-08-20 | 西北工业大学 | Stretching and compression stress wave generator based on electromagnetic force and experimental method |
| CN104729918A (en) * | 2015-03-11 | 2015-06-24 | 赵江霞 | Dynamic pull/pressing and torsion synchronous combined loading experiment device |
| CN204758411U (en) * | 2015-05-20 | 2015-11-11 | 西北工业大学 | Electromagnetic type hopkinson torsion bar loading device twists reverse rifle |
| CN105319124A (en) * | 2015-11-20 | 2016-02-10 | 华南理工大学 | Double-cartridge electromagnetic drive device used for split Hopkinson pressure bar |
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| CN106655674A (en) * | 2017-02-21 | 2017-05-10 | 中国人民解放军陆军军官学院 | Microsecond pulse torsional load motor |
| CN207964483U (en) * | 2018-02-08 | 2018-10-12 | 合肥姜水材性科技有限公司 | A kind of electromagnetic type is drawn, pressure turns round Microsecond grade synchronization combining dynamic load experimental provision |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044352A (en) * | 2019-12-31 | 2020-04-21 | 太原理工大学 | Separated Hopkinson bar pressure and torsion load composite loading device and use method thereof |
| CN111044352B (en) * | 2019-12-31 | 2022-02-15 | 太原理工大学 | Separated Hopkinson bar pressure and torsion load composite loading device and use method thereof |
| CN113702195A (en) * | 2021-07-15 | 2021-11-26 | 深圳大学 | Dynamic and static combined bidirectional electromagnetic loading compression shear experimental device and test method |
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Address after: 230000 the intersection of Shui Yangjiang road and Ningguo road in Baohe District, Hefei, Anhui, No. 220, Hefei National University Science Park. Applicant after: Hefei Ginger Hydraulic Dynamics Experimental Technology Co., Ltd. Address before: 230000 the intersection of Shui Yangjiang road and Ningguo road in Baohe District, Hefei, Anhui, No. 220, Hefei National University Science Park. Applicant before: Hefei Jiang Shuicai of Technology Co. Ltd. |