CN109406310A - The Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars - Google Patents
The Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars Download PDFInfo
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- CN109406310A CN109406310A CN201811601104.2A CN201811601104A CN109406310A CN 109406310 A CN109406310 A CN 109406310A CN 201811601104 A CN201811601104 A CN 201811601104A CN 109406310 A CN109406310 A CN 109406310A
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- confining pressure
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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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- 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
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
Abstract
The present invention provides the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars, square pole fixes and supports frame by self-lubricating square pole and fixes, and square pole realizes that centering is connect in square aperture with centered cubic square chest；Confining pressure loads hydraulic cylinder and confining pressure load actuator and confining pressure loads frame tandem compound, electromagnetic pulse excitation cavity is placed in confining pressure load frame, and be bonded freely and closely with the incidence end of square pole, confining pressure loads frame and boss is connected in series, and boss is placed in square pole incidence end.The setting of boss can be achieved to also ensure that Hopkinson pressure bar incidence end is free end after applying static confining pressure to test sample, after solving the static prestressing force of traditional sound combination Hopkinson lever system application, Hopkinson incident bar is not can guarantee and the problem of transmission bar end is in free state, to provide test condition for the ultrasonic test under subsequent application electromagnetism excitation stress pulse and dwell condition in situ.
Description
Technical field
The present invention relates to the tests of the dynamic mechanical of the materials such as rock, concrete, polymer, more particularly to are based on Hope
Measurement of Material Mechanical Performance system under the conditions of the gloomy bar coupled static-dynamic loadingi of gold.
Background technique
The dynamic test device of the materials such as existing rock, concrete has one-dimensional Hopkinson bar, coupled static-dynamic loadingi
Three axis Hopkinson bars, one-dimensional Hopkinson beam bar, the rock Hopkinson bar based on true triaxial static load.Based on Hopkinson bar
The research method to the material kinetics characteristic such as rock, concrete of device, loading method initially only have one-dimensional Impulsive load, so
There is the one-dimensional Impulsive load of pre-add static state confining pressure afterwards.
In complicated engineering problem, the materials such as rock, concrete are often subject to multidirectional impact load or three-dimensional differs
Crustal stress, and the twin shaft that is subject to of the materials such as rock, concrete or three axis impact loads may be it is each to and meanwhile load
It may be each (such as millisecond delay blasting in blasting process) being delayed to difference.At present both at home and abroad to rock, concrete etc.
The research device of kinetic characteristics of the material under Impulsive load can only realize the coupled static-dynamic loadingi of the confining pressures such as unidirectional and circumferential.
The utility model of Patent No. 201620574575.9 describes a kind of true triaxial Hopkinson pressure bar device, and the device is to rock
Class sample applies three-dimensional static state prestressing force simultaneously, and (stress of three principal direction meets: σ1≠σ2≠σ3) after, and sample is carried out single
To Impulsive load, it can be achieved that under pre-add static state true triaxial stress state rock type sample unidirectional Impulsive load.However unidirectional punching
Hit load three axis Hopkinson bars test can not really reflect the materials such as rock, concrete it is multidirectional while delay impact
The dynamic mechanical behavior of load, this is the technical issues of existing apparatus urgent need is captured.
Summary of the invention
The object of the present invention is to provide one kind, and the load synchronous with dynamic load of true triaxial superelevation static state may be implemented, and realizes
The Dynamic And Static Loads synchronous servo control system of the servo-controlled three axis six-way Hopkinson pressure bar of confining pressure in test process.
The Dynamic And Static Loads synchronous servo of the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars controls
Device includes boss, baffle, confining pressure load hydraulic cylinder and confining pressure load frame.Boss is the innovation main points of the device.Three axis six
It is single-axis bidirectional hydraulic loading system to each direction of Hopkinson lever system, single-axis bidirectional hydraulic loading system is placed in branch
It supports on platform, centered cubic square chest is placed on central supported platform, six faces of centered cubic square chest are reserved rectangular respectively
Hole and peep hole, place the square pole of X, Y, Z-direction in square hole, and the side on square pole close to incident stress-wave loading end is equal
One boss is set, and boss can be the 3% to 7% of rectangular pole length with a distance from square pole incidence stress-wave loading end, boss
Length can be the 1.5% to 4% of rectangular pole length, the diameter of boss can be 1.5 to 2.5 times of square pole cross section side length.
With X+For direction, high-pressure oil pipe is opened, by oil inlet to X+It is oil-filled to confining pressure load hydraulic cylinder 2, push X+To confining pressure plus
It carries actuator 4 to travel forward, and and X+It is contacted to confining pressure load frame 7；It continues to oil pressure and pushes X+Actuator 4 is loaded to confining pressure
It moves forward, axial compressive force is transferred to X by boss 8+Direction square pole 10, and then be applied on cuboid sample 64, make
It is by accurate static confining pressure.Similarly, Y, Z-direction static state confining pressure loading principle are identical as X-direction.It is applied to X, Y, Z three-dimensional confining pressure
After adding, dynamic stress pulse can be applied to sample by being placed in the electromagnetic pulse excitation cavity of square pole incidence end.It is dynamic
State Impulsive load process will be impacted using the precise displacement sensor and precision pressure sensor in servo hydraulic control system
The industrial personal computer that the displacement signal of square pole and pressure signal are transmitted to confining pressure loading system in the process realizes the position to load cylinder
Shifting is precisely controlled with loading force size, to guarantee that test sample dynamic impulsion loading procedure static state confining pressure maintains one always
Metastable stress value realizes static confining pressure SERVO CONTROL.
In order to solve the problems, such as that in the prior art, the present invention provides a kind of Dynamic And Static Loads of three axis six-way Hopkinson pressure bars
Synchronous servo control system, it is flat that the test macro is equipped with centered cubic square chest, planche cross support platform, central supported
Platform；Centered cubic square chest Z+ to completely open, along X+ to, X- to, Y+ to, Y- to and Z- to respectively at square chest hit exactly meta position
Square aperture is installed, and square aperture size is identical as square pole size；Centered cubic square chest is placed in central supported platform
Upper surface center, and constitute orthogonal coordinate system for three axis six-way Hopkinson lever systems with planche cross support platform
Precise positioning and centering；Using centered cubic square chest as symmetrical centre, be symmetrically arranged in planche cross support platform X+ to,
X- to, Y+ to, Y- to confining pressure load hydraulic cylinder, confining pressure load actuator, confining pressure load frame, electromagnetic pulse excitation cavity, boss,
Square pole and self-lubricating square pole fix and support frame；Planche cross support platform center it is upper and lower be respectively set Z+ to and Z-
To confining pressure load hydraulic cylinder, confining pressure load actuator, confining pressure load frame, electromagnetic pulse excitation cavity, boss, square pole and from
Lubrication square pole fixes and supports frame, and X+ collectively forms three axis six-ways to six systems system to, Z+ to Z- to, Y+ to, Y- to, X-
Hopkinson lever system；
Square pole fixes and supports frame by self-lubricating square pole and fixes, and square pole and centered cubic square chest are in square aperture
Realize centering connection；Confining pressure loads hydraulic cylinder and confining pressure load actuator and confining pressure loads frame tandem compound, and electromagnetic pulse swashs
Hair chamber is placed in confining pressure load frame, and is placed in the incidence end of square pole, and freely and close with the incidence end of square pole
Fitting, confining pressure loads frame and boss is connected in series, and boss is placed in square pole incidence end, is long 3% to 7% of bar apart from end
Place.
As a further improvement of the present invention, distance of the boss apart from square pole incidence stress-wave loading end is rectangular
The 3% to 7% of pole length.
As a further improvement of the present invention, the length of the boss is the 1.5% to 4% of rectangular pole length.
As a further improvement of the present invention, the diameter of the boss is 1.5 to 2.5 times of square pole cross section side length.
It as a further improvement of the present invention, further include square pole centering positioning guide rail, square pole is fixed along square pole centering
Position guide rail realizes that centering is connect in square aperture with centered cubic square chest.
It as a further improvement of the present invention, further include electromagnetic pulse excitation cavity support frame, the electromagnetic pulse excitation cavity
Support frame is placed in confining pressure load frame, and is placed in the incidence end of square pole, the electromagnetic pulse excitation cavity support frame support
The electromagnetic pulse excitation cavity.
As a further improvement of the present invention, X+ is to, X- to, Y+ to, Y- to being respectively equipped with link supports bar and confining pressure adds
It carries end-stopping plate and confining pressure loads fixed end-stopping plate, confining pressure is loaded end-stopping plate with the link supports bar and confining pressure load fixing end is kept off
Plate is connected with centered cubic square chest.
As a further improvement of the present invention, Z+ vertically fixes and supports frame to being respectively equipped with to Z-, described vertical
Fix and support frame and centered cubic square chest connect for Z+ to Z-to the application of static confining pressure provide fixed frame with
Counter-force support system.
The beneficial effects of the present invention are:
The setting of boss can be achieved to also ensure that Hopkinson pressure bar incidence end is after applying static confining pressure to test sample
Free end not can guarantee Hopkinson incidence after solving the static prestressing force of traditional sound combination Hopkinson lever system application
The problem of bar and transmission bar end are in free state, thus for subsequent application electromagnetism excitation stress pulse and pressure maintaining item in situ
Ultrasonic test under part provides test condition.
Hopkinson pressure bar test macro true triaxial may be implemented in static true triaxial synchronous servo control confining pressure loading system
The synchronous load of static confining pressure, and realize the SERVO CONTROL (Bit andits control and Stress Control) of confining pressure in test process.
300MPa superelevation static state confining pressure (simulation ten thousand metres depth crustal stress) true triaxial load can be achieved in the present invention, solves
The defect of super-pressure static state confining pressure simulation ten thousand metres depth crustal stress can not be applied.
Detailed description of the invention
Fig. 1 is three axis six-way the synchronized Coordinative Control electromagnetism load Hopkinson lever system schematic three dimensional views；
Fig. 2 is X to single-axis bidirectional hydraulic loading system main view；
Fig. 3 is X to single-axis bidirectional hydraulic loading system top view；
Fig. 4 is that square pole and boss construct schematic three dimensional views；
Fig. 5 is that square pole and boss construct two-dimentional main view；
Fig. 6 is that square pole and boss construct two-dimentional left view；
Fig. 7 is that boss construction with confining pressure loading system connect schematic three dimensional views；
Fig. 8 is that boss construction connect two-dimentional main view with confining pressure loading system.
Figure label corresponding component title is as follows:
1-X+To support platform, 2-X+To confining pressure load hydraulic cylinder, 3-X+To confining pressure load end-stopping plate, 4-X+To confining pressure plus
Load actuator, 5-X+To electromagnetic pulse excitation cavity support frame, 6-X+To electromagnetic pulse excitation cavity, 7-X+To confining pressure load frame, 8-X+To
Boss, 9-X+To link supports bar, 10-X+To square pole, 11-X+Frame is fixed and supported to self-lubricating square pole, 12-X+To rectangular
Bar centering positioning guide rail, 13-X-It is loaded to confining pressure and fixes end-stopping plate, 14-X-To electromagnetic pulse excitation cavity, 15-X-To square pole pair
Middle positioning guide rail, 16-X-To link supports bar, 17-X-To confining pressure load frame, 18-X-Frame is fixed and supported to self-lubricating square pole,
19-X-To electromagnetic pulse excitation cavity support frame, 20-X-To boss, 21-X-To square pole, 22-X-To support platform, 23-Y+Xiang Wei
Pressure load end-stopping plate, 24-Y+To confining pressure load hydraulic cylinder, 25-Y+To support platform, 26-Y+To square pole centering positioning guide rail,
27-Y+To confining pressure load actuator, 28-Y+To electromagnetic pulse excitation cavity support frame, 29-Y+To electromagnetic pulse excitation cavity, 30-Y+To
Link supports bar, 31-Y+To confining pressure load frame, 32-Y+To boss, 33-Y+Frame is fixed and supported to self-lubricating square pole, 34-Y+To
Square pole, 35-Y-It is loaded to confining pressure and fixes end-stopping plate, 36-Y-To link supports bar, 37-Y-To confining pressure load frame, 38-Y-To rectangular
Bar centering positioning guide rail, 39-Y-To support platform, 40-Y-To electromagnetic pulse excitation cavity, 41-Y-It is supported to electromagnetic pulse excitation cavity
Frame, 42-Y-To boss, 43-Y-To square pole, 44-Y-Frame is fixed and supported to self-lubricating square pole, 45-Z+It is loaded to confining pressure hydraulic
Oil cylinder, 46-Z+To confining pressure load actuator, 47-Z+To confining pressure load frame, 48-Z+To electromagnetic pulse excitation cavity support frame, 49-Z+To
Electromagnetic pulse excitation cavity, 50-Z+To vertically fixing and supporting frame, 51-Z+To boss, 52-Z+To self-lubricating square pole it is fixed and
Support frame, 53-Z+To square pole, 54-Z+To square pole centering positioning guide rail, 55-Z-Frame is fixed and supported to self-lubricating square pole,
56-Z-To vertically fixing and supporting frame, 57-Z-To electromagnetic pulse excitation cavity, 58-Z-To confining pressure load frame, 59-Z-To square pole
Centering positioning guide rail, 60-Z-To square pole, 61-Z-To boss, 62-Z-To electromagnetic pulse excitation cavity support frame, 63-Center cube
Body square chest, 64-Cuboid sample, 65-Central supported platform.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
Fig. 1 is that three axis six-way the synchronized Coordinative Control electromagnetism load Hopkinson lever system three-dimensional figure.Experimental rig is placed in water
On flat cross hang platform, which includes X+To support platform 1, X-To support platform 22, Y+To support platform 25 and Y-To branch
Support platform 39 and central supported platform 65.63 upper surface of centered cubic square chest is (along Z+To) completely open, along X+To, X-To,
Y+To, Y-To and Z-To respectively at centered cubic square chest middle position, square aperture, and square aperture size and side are set
Shape bar size is identical；Centered cubic square chest 63 is placed in the upper surface center of central supported platform 65, and with planche cross branch
It supports platform and constitutes precise positioning and centering of the orthogonal coordinate system for three axis six-way Hopkinson lever systems.
It is symmetrical centre with centered cubic square chest 63, is symmetrically arranged X+To, X-To, Y+To, Y-To, Z+To and Z-To
Confining pressure loading system, electromagnetic pulse excitation cavity, square pole and self-lubricating square pole fix and support frame, constitute three axis six-ways suddenly
Pu Jinsen lever system.Wherein X+To square pole 10 by X+It is fixed that frame 11 is fixed and supported to self-lubricating square pole, and along X+To rectangular
Bar centering positioning guide rail 12 and centered cubic square chest 63 are in X+Centering connection is realized to square aperture；X+It is loaded to confining pressure hydraulic
Oil cylinder 2 and X+Actuator 4 and X are loaded to confining pressure+7 tandem compound of frame, X are loaded to confining pressure+To electromagnetic pulse excitation cavity 6 and X+To
Electromagnetic pulse excitation cavity support frame 5 is placed on X+Into confining pressure load frame 7, and it is placed in X+To the incidence end of square pole 10, and with
X+It freely and is closely bonded to the incidence end of square pole 10, X+Frame 7 and X are loaded to confining pressure+It is connected in series to boss 8, is used for edge
X+X is applied to test sample to the incidence end of square pole 10+To static confining pressure and dynamic stress impulsive load；X+To link supports
Bar 9 is by X+It connects to confining pressure load end-stopping plate 3 and centered cubic square chest 63 as X+Apply to static confining pressure and fixed frame is provided
Frame and counter-force support system.X-To square pole 21 by X-It is fixed that frame 18 is fixed and supported to self-lubricating square pole, and along X-To rectangular
Bar centering positioning guide rail 15 and centered cubic square chest 63 are in X-Centering connection is realized to square aperture；X-It is excited to electromagnetic pulse
Chamber 14 and X-X is placed in electromagnetic pulse excitation cavity support frame 19-To the inside of confining pressure load frame 17, and it is placed in X-To square pole 21
Incidence end, and and X-It freely and is closely bonded to the incidence end of square pole 21, X-Frame 17 and X are loaded to confining pressure-To boss 20
Connection, for along X-X is applied to test sample to the incidence end of square pole 21-To static confining pressure and dynamic stress impulsive load；X-
To link supports bar 16 by X-Fixed end-stopping plate 13 is loaded to confining pressure to connect with centered cubic square chest 63 as X-It is enclosed to static state
Pressure, which applies, provides fixed frame and counter-force support system.Y+To square pole 34 by Y+Frame 33 is fixed and supported to self-lubricating square pole
It is fixed, and along Y+To square pole centering positioning guide rail 26 and centered cubic square chest 63 in Y+Centering connection is realized to square aperture；
Y+Hydraulic cylinder 24 and Y are loaded to confining pressure+Actuator 27 and Y are loaded to confining pressure+31 tandem compound of frame, Y are loaded to confining pressure+To electricity
Magnetic field impulse excitation cavity 29 and Y+Y is placed on to electromagnetic pulse excitation cavity support frame 28+Into confining pressure load frame 31, and it is placed in Y+
To the incidence end of square pole 34, and and Y+It freely and is closely bonded to the incidence end of square pole 34, Y+To confining pressure load frame 31 with
Y+It is connected in series to boss 32, for along Y+Y is applied to test sample to the incidence end of square pole 34+To static confining pressure and dynamic
Stress pulse load；Y+To link supports bar 30 by Y+It is connected to confining pressure load end-stopping plate 23 with centered cubic square chest 63
For Y+Apply to static confining pressure and fixed frame and counter-force support system are provided.Y-To square pole 43 by Y-It is solid to self-lubricating square pole
Fixed and support frame 44 is fixed, and along Y-To square pole centering positioning guide rail 38 and centered cubic square chest 63 in Y-To square aperture
Realize centering connection；Y-To electromagnetic pulse excitation cavity 40 and Y-Y is placed in electromagnetic pulse excitation cavity support frame 41-It is loaded to confining pressure
Inside frame 37, and it is placed in Y-To the incidence end of square pole 43, and and Y-It freely and is closely pasted to the incidence end of square pole 43
It closes, Y-Frame 37 and Y are loaded to confining pressure-It is connected to boss 42, for along Y-Y is applied to test sample to the incidence end of square pole 43-
To static confining pressure and dynamic stress impulsive load；Y-To link supports bar 36 by Y-Fixed end-stopping plate 35 and center are loaded to confining pressure
Cube square chest 63 connects as Y-Apply to static confining pressure and fixed frame and counter-force support system are provided.Z+To square pole 53
By Z+It is fixed that frame 52 is fixed and supported to self-lubricating square pole, and along Z+To square pole centering positioning guide rail 54 and centered cubic
Square chest 63 is in Z+Centering connection is realized to square aperture；Z+Hydraulic cylinder 45 and Z are loaded to confining pressure+Actuator 46 is loaded to confining pressure
With Z+47 tandem compound of frame, Z are loaded to confining pressure+To electromagnetic pulse excitation cavity 49 and Z+It is put to electromagnetic pulse excitation cavity support frame 48
It sets in Z+Into confining pressure load frame 47, and it is placed in Z+To the incidence end of square pole 53, and and Z+To square pole 53 incidence end from
By and closely fitting, Z+Frame 47 and Z are loaded to confining pressure+It is connected in series to boss 51, for along Z+To the incidence end of square pole 53
Z is applied to test sample+To static confining pressure and dynamic stress impulsive load；Z+It is vertical with center to frame 50 is vertically fixed and supported
Cube square chest 63 connects as Z+Apply to static confining pressure and fixed frame and counter-force support system are provided.Z-To square pole 60 by
Z-It is fixed that frame 55 is fixed and supported to self-lubricating square pole, and along Z-To square pole centering positioning guide rail 59 and centered cubic side
Case 63 is in Z-Centering connection is realized to square aperture；Z-To electromagnetic pulse excitation cavity 57 and Z-To electromagnetic pulse excitation cavity support frame
62 are placed in Z-To the inside of confining pressure load frame 58, and it is placed in Z-To the incidence end of square pole 60, and and Z-Incidence to square pole 60
End freely and is closely bonded, Z-Frame 58 and Z are loaded to confining pressure-It is connected to boss 61, for along Z-To the incidence end of square pole 60
Z is applied to test sample-To static confining pressure and dynamic stress impulsive load；Z-It is vertical with center to frame 56 is vertically fixed and supported
Cube square chest 63 connects as Z-Apply to static confining pressure and fixed frame and counter-force support system are provided.
As shown in Figures 4 to 6, boss is placed in square pole incidence end, is about 3% to 7% long place of bar apart from end.
The working principle of the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar of the invention patent is
(take X to single-axis bidirectional hydraulic loading system for):
X+To Hopkinson leverage by X+End-stopping plate 3, X are loaded to confining pressure+Hydraulic cylinder 2, X are loaded to confining pressure+To confining pressure plus
Carry actuator 4, X+To electromagnetic pulse excitation cavity 6, X+To link supports bar 9, X+To square pole 10, X+It is solid to self-lubricating square pole
Fixed and support frame 11, X+To electromagnetic pulse excitation cavity support frame 5 and X+It is constituted to square pole centering positioning guide rail 12；Wherein X+To
Square pole 10 is by X+It is fixed that frame 11 is fixed and supported to self-lubricating square pole, and along X+To square pole centering positioning guide rail 12 in
Body-centred cube square chest 63 is in X+Centering connection is realized to square aperture；X+Hydraulic cylinder 2 and X are loaded to confining pressure+It loads and makees to confining pressure
Dynamic device 4 and X+7 tandem compound of frame, X are loaded to confining pressure+Frame 7 and X are loaded to confining pressure+It is connected in series to boss 8, for along X+Xiang Fang
The incidence end of shape bar 10 applies X to test sample+Static confining pressure, X+To electromagnetic pulse excitation cavity 6 and X+To electromagnetic pulse excitation cavity
Support frame 5 is placed on X+Into confining pressure load frame 7, and it is placed in X+To the incidence end of square pole 10, and and X+To square pole 10
Incidence end freely and is closely bonded, for along X+X is applied to test sample to the incidence end of square pole 10+To dynamic stress arteries and veins
Rush load；X+To link supports bar 9 by X+It connects to confining pressure load end-stopping plate 3 and centered cubic square chest 63 as X+Xiang Jing
State confining pressure, which applies, provides fixed frame and counter-force support system.X-To square pole 21 by X-It is fixed and supported to self-lubricating square pole
Frame 18 is fixed, and along X-To square pole centering positioning guide rail 15 and centered cubic square chest 63 in X-Centering is realized to square aperture
Connection；X-To electromagnetic pulse excitation cavity 14 and X-X is placed in electromagnetic pulse excitation cavity support frame 19-To the inside of confining pressure load frame 17,
And it is placed in X-To the incidence end of square pole 21, and and X-It freely and is closely bonded to the incidence end of square pole 21, X-To confining pressure
Load frame 17 and X-It is connected to boss 20, for along X-X is applied to test sample to the incidence end of square pole 21-Static confining pressure and
Dynamic stress impulsive load；X-To link supports bar 16 by X-Fixed end-stopping plate 13 and centered cubic square chest 63 are loaded to confining pressure
It connects as X-Apply to static confining pressure and fixed frame and counter-force support system are provided.
After installing device and cuboid sample 64 as above, high-pressure oil pipe is opened, by oil inlet to X+Xiang Wei
Pressure load hydraulic cylinder 2 is oil-filled, pushes X+It travels forward to confining pressure load actuator 4, and and X+It is contacted to confining pressure load frame 7；After
The continuous oil pressure that applies pushes X+It is moved forward to confining pressure load actuator 4, axial compressive force is transferred to X by boss 8+Direction is rectangular
Bar 10, and then be applied on cuboid sample 64, make it by accurate static confining pressure.Cuboid sample 64 can be synchronized essence
The load of quasi- true triaxial static state confining pressure, and confining pressure can be it is servo-controlled.X+To square pole 10, X-To separate cube of square pole 21
The side of body sample 64 is free end, can be in X+To square pole 10, X-Pass through electromagnetic pulse excitation cavity to 21 two sides of square pole
Apply that amplitude is controllable, impact load of adjustable pulse width, and impact load can be three-dimensional and load or respectively prolong to difference simultaneously
When load, while single-axis bidirectional also may be implemented and twin shaft four-way synchronously control precisely loads.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (8)
1. a kind of Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars, it is characterised in that: the test
System is equipped with centered cubic square chest, planche cross support platform, central supported platform；Centered cubic square chest Z+To opening completely
Mouthful, along X+To, X-To, Y+To, Y-To and Z-To respectively at square chest middle position, square aperture, and square aperture size are set
It is identical as square pole size；Centered cubic square chest is placed in the upper surface center of central supported platform, and with planche cross branch
It supports platform and constitutes precise positioning and centering of the orthogonal coordinate system for three axis six-way Hopkinson lever systems；With centered cubic side
Case is symmetrical centre, is symmetrically arranged X in planche cross support platform+To, X-To, Y+To, Y-Hydraulic oil is loaded to confining pressure
Cylinder, confining pressure load actuator, confining pressure load frame, electromagnetic pulse excitation cavity, boss, square pole and self-lubricating square pole fix and
Support frame；Z is respectively set in the upper and lower of planche cross support platform center+To and Z-Make to confining pressure load hydraulic cylinder, confining pressure load
Dynamic device, confining pressure load frame, electromagnetic pulse excitation cavity, boss, square pole and self-lubricating square pole fix and support frame, X+To, X-
To, Y+To, Y-To, Z+To and Z-Three axis six-way Hopkinson lever systems are collectively formed to six systems system；
Square pole fixes and supports frame by self-lubricating square pole and fixes, and square pole and centered cubic square chest are realized in square aperture
Centering connection；Confining pressure loads hydraulic cylinder and confining pressure load actuator and confining pressure loads frame tandem compound, electromagnetic pulse excitation cavity
It is placed in confining pressure load frame, and is placed in the incidence end of square pole, and be bonded freely and closely with the incidence end of square pole,
Confining pressure loads frame and boss is connected in series, and boss is placed in square pole incidence end, is 3% to 7% long place of bar apart from end.
2. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: distance of the boss apart from square pole incidence stress-wave loading end is the 3% to 7% of rectangular pole length.
3. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: the length of the boss is the 1.5% to 4% of rectangular pole length.
4. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: the diameter of the boss is 1.5 to 2.5 times of square pole cross section side length.
5. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: further include square pole centering positioning guide rail, square pole along square pole centering positioning guide rail and centered cubic square chest in
Square aperture realizes centering connection.
6. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: it further include electromagnetic pulse excitation cavity support frame, the electromagnetic pulse excitation cavity support frame is placed in confining pressure load frame,
And it is placed in the incidence end of square pole, the electromagnetic pulse excitation cavity support frame supports the electromagnetic pulse excitation cavity.
7. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: X+To, X-To, Y+To, Y-To be respectively equipped with link supports bar and confining pressure load end-stopping plate and confining pressure load fixing end gear
Plate, confining pressure is loaded end-stopping plate with the link supports bar and confining pressure loads fixed end-stopping plate and connect with centered cubic square chest
Come.
8. the Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bar according to claim 1, special
Sign is: Z+To and Z–Frame is vertically fixed and supported to being respectively equipped with, it is described vertically to fix and support frame and centered cubic
Square chest connects as Z+To and Z–Apply to static confining pressure and fixed frame and counter-force support system are provided.
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| CN201811601104.2A CN109406310A (en) | 2018-12-26 | 2018-12-26 | The Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars |
| PCT/CN2019/115480 WO2020134579A1 (en) | 2018-12-26 | 2019-11-05 | Dynamic and static load synchronous servo control system for three-axis six-direction hopkinson pressure bar |
| US17/359,126 US20210325287A1 (en) | 2018-12-26 | 2021-06-25 | Dynamic True Triaxial Electromagnetic Hopkinson Bar System |
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| CN201811601104.2A CN109406310A (en) | 2018-12-26 | 2018-12-26 | The Dynamic And Static Loads synchronous servo control system of three axis six-way Hopkinson pressure bars |
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| WO2021012459A1 (en) * | 2019-07-19 | 2021-01-28 | 深圳大学 | Biaxial four-direction dynamic and static combined electromagnetic loading hopkinson plate impact loading device |
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