CN109166440A - Bidirectional power physical simulation experiment device and experimental method for Elevated Gravity - Google Patents
Bidirectional power physical simulation experiment device and experimental method for Elevated Gravity Download PDFInfo
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Abstract
The invention discloses a kind of Bidirectional power physical simulation experiment devices and experimental method for Elevated Gravity, experimental provision includes experimental box and power device, movable plate of the experimental box by being located at the fixed plate of front and rear sides and positioned at the left and right sides forms, fixed plate and movable plate are arranged vertically, experimental material is placed in experimental box, the two sidewalls of movable plate move back and forth along fixed plate under the action of power device, to the experimental material being squeezed and deformed in experimental box.Experimental provision of the invention completes the arrangement to the experimental material in infrastructure physical simulation experiment case under normal gravity condition；Under the conditions of centrifugal force, the Bidirectional power device of simulation experiment of tectonics physics case is carried out automatically controlling, so that simulation experiment of tectonics physics case completes infrastructure physical simulation experiment, Bidirectional power structural deformation physical simulation experiment process study in experimental box, provides instant geological structure evolutionary process model for researcher.
Description
Technical field
The present invention relates to a kind of experimental provision and experimental method more particularly to a kind of Bidirectional powers for Elevated Gravity
Physical simulation experiment device and experimental method.
Background technique
Architectonic physical analogy has 200 years of researches history.The research in this field is until eighties of last century 30
(Hubbert, 1937 just obtain substantive development, and eventually become Modeling of Geological Structural Deformation rule for the foundation of age similarity theory
Rule, the main means of forming process and study of genetic mechanism.For a long time, people utilize normal gravity tectonics physical simulating device
There is comprehensive research to geological structure process spread, and greatly advanced the research and the level of understanding of structural geology.Especially
Since last century the mid-80, structural deformation physical analogy is a kind of important experiment hand for studying Modeling of Geological Structural Deformation process
Section, plays an important role to the research of structural geology.
At home and abroad structural geology research field achieves remarkable effect to structural deformation physical simulating method, and domestic and international one
A little prominent universities and research institute establish respective laboratory one after another, for example, Stanford Univ USA, Rice University, English
London University of state, Bern, SUI university etc..At home, Nanjing University, The Chinese Geology Univ. (Beijing), Chengdu University of Technology,
The colleges and universities such as Chinese Petroleum Univ. establish simulation experiment of tectonics physics room in succession, are mainly used for simulating structural deformation physics
The experimental study of simulation；Structural physical open laboratory of Research Institute of Geology, China Earthquake Administration, in rock rupture and friction and earthquake
Source physics process, On Characteristics of Earthquake Precursors and Physical Mechanism, the physical property and the rheological equationm of state and ground of the earth's crust and outer mantle rock
Shake origin mechanism and dynamics etc. carried out a large amount of experimental study.However, most of simulation experiment of tectonics physics be
It is completed in sandbox experiment under the conditions of normal gravity.Normal gravity tectonics physical simulation experiment is being related to rock flow deformation (such as
Gushed on mantle plume, asthenosphere convection current, Lower lip pits and magma and gypsum-salt bed diapir) the problems such as construction process physical analogy
For aspect there are great limitation, normal gravity tectonics physical simulation experiment can simulate structural deformation form true to nature, but test and lack
The stress influence factor of structural deformation is lacked.
Ground knowledge for being related to gravity is inscribed, and centrifuge has irreplaceable role.Using centrifuge, may be implemented just
Chang Chongli hundred times, even 1000 times or more of Elevated Gravity, therefore practical geologic body can be dwindled into a geological model,
It is studied under lab.For the rock in the earth's crust, gravity is to control its principal element destroyed and deformed, and is used
It is inevitable choice that centrifuge, which carries out related physical simulation experiment,.The laboratory Sweden Uppsala university Ramberg takes the lead in carrying out
Based on centrifuge Elevated Gravity PHYSICAL MODELING OF IN (Ramberg, 1967, then Canada's Queens University and Italian Buddhist
This respect work has also been carried out in the modelling structural experiments rooms such as Lauren Sa university in succession, foreign scholar also delivered corresponding research at
Fruit (Harris&Koyi (2003, JSG), Acocella (2008, EPSL), Noble&Dixon (2011, JSG), Corti&
Dooley (2015, Tectonophysics), Dietl&Koyi (2011, JSG) etc..
The simulated experiment carried out under centrifuge Elevated Gravity is to solve the problems, such as that normal gravity tectonics physical simulation experiment exists
Effective way, however since structure is complicated that cost is high for long-armed super-magnum centrifuge, the physics mould of centrifuge super gravity field environment
Quasi- most lower, smaller drum centrifuges of size using cost.Although these drum centrifuge geology structural model devices
Highest acceleration of gravity up to 1000g or more, but the size of experimental model is minimum (more than ten centimetres maximum, it is difficult to fine analog
Practical geological structure phenomenon, and due to Laboratory Module narrow space, no image of Buddha Chang Chongli experimental provision is equipped with force application part like that
With real-time observation instrument, it is difficult to precision control rate of deformation and synchronous recording whole deformation process.In China, for centrifuge environment
Under architectonic simulation experiment study example it is also considerably less, the experiment of most centrifuge modellings is mainly used in ground work
The research of the stress-deformation characteristic and Penetration Signature of journey structure.As China Water Resources & Hydropower Science Research Institute's civil engineering laboratory is gathered around
There is large geotechnical centrifugal model test machine, the relevant device for being applied to modelling structural experiment under centrifuge environment does not almost have then at present
Have.
Summary of the invention
Goal of the invention: the first object of the present invention, which is to provide, a kind of to be provided Elevated Gravity geological structure for researcher and drills
Become the Bidirectional power physical simulation experiment device of process model；The second object of the present invention is to provide the reality using the experimental provision
Proved recipe method.
Technical solution: the present invention is used for Elevated Gravity Bidirectional power physical simulation experiment device, including experimental box and dynamic
Power device, movable plate of the experimental box by being located at the fixed plate of front and rear sides and positioned at the left and right sides form, fixed plate and work
Movable plate is arranged vertically, and experimental material is placed in experimental box, and the two sidewalls of movable plate are come along fixed plate under the action of power device
Return is dynamic, to the experimental material being squeezed and deformed in experimental box.
Wherein, the power device includes the power screw rod connecting with movable plate and provides the electricity of power for power screw rod
Machine and speed reducer, wherein the power screw rod is set on power sliding rail, and drives movable plate by the sliding on power sliding rail
Move back and forth.
Preferably, motor is arranged vertically；The input shaft and output shaft of speed reducer are on same axis, and the axis vertical
Arrangement.Power sliding rail sets up or is provided on the bottom plate of experimental box, it is preferred that power sliding rail is also to lay vertically.Here perpendicular
It is straight to lay the bottom plate laying referred to perpendicular to experimental box.
Movable plate is equipped with movable slider, while peripheral hardware or opening up movable rail in fixed plate, and movable slider is in activity
Moving back and forth for movable plate is realized in sliding in sliding rail.Preferably, movable slider is located at two sides at the top of movable plate, and movable rail is located at
At the top of fixed plate.
In the present invention, at least one piece in fixed plate and movable plate is transparent fixed plate.Preferably, movable plate is transparent solid
Fixed board.Further, one of movable plate is transparent fixed plate.Meanwhile it being set in transparent fixed plate side installation photographing
It is standby.
To prevent the experimental material in experimental box from revealing, while the frictional force that movable plate is contacted with fixed plate is reduced, in work
The moving contact position of movable plate and fixed plate is equipped with sealing strip.Preferred sealing strip is Teflon sealing strip.
Further, scanner is installed at the top of experimental box, to shoot the deformation process of experimental material.
Experimental provision of the invention is suitable for 160-200G centrifugal force genvironments, overweight especially suitable for 160G centrifugal force
Environment.
When originally with centrifugal force genvironments, experimental provision is set in the hanging basket of centrifuge, and movement is additionally provided on centrifuge
Equipment is controlled, which is connect by wired or wireless way with the computer outside centrifuge, while the movement control
Control equipment connects the experimental provision in hanging basket with signal wire by conductor wire.
The experimental method of Bidirectional power physical simulation experiment device of the present invention, includes the following steps:
(1) centrifuge operating before, under normal gravity environment, experimental material is routed in experimental box, experimental provision installation
Into the hanging basket of centrifuge, conductor wire and signal wire are connected；
(2) revolving speed or gravity value of presetting centrifuge, starting centrifuge wait for that its operating reaches the revolving speed or gravity of setting
When value, hanging basket rotates and is in horizontality；Start computer, sets the movement rate and move distance of movable plate, power dress
It sets and drives movable plate setting in motion, the experimental material in experimental box starts to deform；
(3) while movable plate moves, the deformation data of experimental material in experimental box is recorded；
(4) when the movement rate of movable plate and move distance reach preset value, centrifugation is closed in stop motion
Machine, hanging basket restore suspension plumbness, take out the experimental provision in hanging basket, carry out experimental study to the deformation data of record.
The utility model has the advantages that compared with prior art, experimental provision of the invention is completed under normal gravity condition to infrastructure
The arrangement of experimental material in physical simulation experiment case, under the conditions of centrifugal force, to the two-way dynamic of simulation experiment of tectonics physics case
Power device carries out automatically controlling, so that simulation experiment of tectonics physics case completes infrastructure physical simulation experiment, in experimental box
Bidirectional power structural deformation physical simulation experiment process study provides instant geological structure evolutionary process model for researcher.
Detailed description of the invention
Fig. 1 is the top view of Bidirectional power physical simulation experiment device of the present invention；
Fig. 2 is the side view of Bidirectional power physical simulation experiment device of the present invention；
Fig. 3 is the side view in Bidirectional power physical simulation experiment of the present invention cabin；
Fig. 4 is the structural schematic diagram of Bidirectional power physical simulation experiment device of the present invention under centrifuge Elevated Gravity.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
As shown in Figure 1-3, experimental provision includes experimental box 5 and power device.Experimental box 5 is by the fixation positioned at front and rear sides
Plate 11 and transparent fixed plate 16, and the composition of movable plate 8 positioned at the left and right sides, fixed plate 11,16 bottom of transparent fixed plate are solid
Due on experiment Ceiling 18.Fixed plate 11,16 top of transparent fixed plate are equipped with movable rail 9 along its length, and activity is sliding
Rail 9 is connect by movable slider 12 with movable plate 8.
In specific implementation, experimental provision of the invention is suitable for 160-200G centrifugal force genvironments, especially suitable for
160G centrifugal force genvironments.
All gravity values are own wt under normal gravity environment, and the gravity that 160-200G Elevated Gravity is subjected to need to be held
The 160-200 times of weight by self gravity is indeformable, and the bottom endurance of the fixed plate 11 and movable plate 8 that are disposed vertically is itself
160-200 times of weight, example: the self weight 20Kg of fixed plate 11, in 160G Elevated Gravity, which is
3200Kg, this requires that the material of manufacture baffle is special material, material generally selects aviation magnesium alloy or titanium alloy.
Movable plate 8 not only needs to overcome self gravity, also to overcome and test the frictional force between bottom plate when moving, and is overcoming the two
Itself cannot be deformed while power, and under Elevated Gravity, frictional force can be very big, reduce frictional force, only between reduction plate
Contact pressure, therefore inventor devises movable rail 9 and movable slider 12, guide rail is installed on the top of fixed plate 11, with work
Movable slider 12 connects movable plate 8, and when movable plate 8 moves, movable slider 12 moves together with movable plate 8, and carries movable plate 8
Vertical gravity so that frictional force becomes minimum.
Fixed plate 11 and transparent fixed plate 16 should fully consider the lateral stress under 160-200G Elevated Gravity when manufacturing,
The lateral pressure 160-200G Centrifugal Environment for being subjected to material in experimental box 5 is indeformable.Movable plate 8 fully considers 160- when manufacturing
Lateral stress under 200G hypergravity is subjected to the lateral pressure 160-200G centrifugal hoop of material in experimental box 5 under motion state
Border, movable plate 8 is indeformable under motion state.Movable slider 12 and power sliding rail 13 are subjected under 160-200G Centrifugal Environment living
The weight of movable plate 8, and can move freely.
Power device is located at the left and right sides of experimental box 5, wherein movable plate 8 is connect with the power screw rod 14 of its two sides, is moved
Power screw rod 14 is drivingly connected by integrated motor 15 with speed reducer 23, and another movable tail end of power screw rod 14 and power sliding block 4 connect
It connects, power sliding block 4 is connect with the power sliding rail 13 for being fixed on experiment Ceiling 18.Power screw rod 14 in Fig. 2 is perpendicular to gravity
Direction itself need to carry 160-200 times of hypergravity of own wt, can be deformed, therefore devises power sliding block 4 and move
Power sliding rail 13 carries its own gravity, and can drive precise motion by motor 15 under constant shape state.Motor 15 is in hypergravity
Environment can only could run well perpendicular to experiment bottom plate placement, therefore motor 15 is installed perpendicular to experiment Ceiling 18.
Power screw rod 14 according to thrust size type selecting, need to be subjected to the lateral pressure 160-200G of material in experimental box 5 from
Thimble border.The lateral pressure 160-200G that integrated motor 15 and 23 thrust of speed reducer need to be greater than the material in experimental box 5 is centrifuged
Environment, in order to guarantee that integrated motor 15 and normal operation of the speed reducer 23 under the Centrifugal Environment, motor 15 must be vertically real
Hatch checking bottom plate 18 is installed.23 input shaft of speed reducer and output shaft on the same axis, and axis perpendicular to experiment Ceiling 18 pacify
Dress.
Under Elevated Gravity, since the sand lateral force in experiment sandbox is very big, it is easy to reveal, movable plate 8 and solid
Fixed board 11 must be fully sealed, this is high to accuracy of manufacture requirement, and special material sealed set, the present invention must be also used between plate
It is middle specially to have made sealing strip with teflon material.Specifically, movable plate 8 is contacted with fixed plate 11, transparent fixed plate 16
Two sides are equipped with Teflon sealing strip 21, for preventing the material in experimental box 5 from revealing, and reduce movable plate 8 and fixed plate 11,
The frictional force that transparent fixed plate 16 contacts need to calculate frictional force when calculating the push-pull effort size of movable plate 8.
Spatial digitizer 6 is installed, spatial digitizer 6 is installed on the scanner peace on experiment bottom plate 18 at the top of Laboratory Module 3
Fill bracket 17.Scanner mounting bracket 17 is subjected to 6 weight of spatial digitizer, and indeformable under 160-200G Centrifugal Environment.
The side of the transparent fixed plate 16 in 3 bottom of Laboratory Module is equipped with photographing equipment 7, and photographing equipment 7 is fixed on Laboratory Module bottom
On plate 18.
In specific implementation, experimental box 5 is horizontally arranged at 3 bottom centre of Laboratory Module.
As shown in figure 4, being equipped with Laboratory Module 3 in the centrifugal basket 2 on centrifuge 1, fortune is installed at the top of centrifuge 1
Dynamic control equipment 10, the computer 22 that motion control apparatus 10 passes through the experiment control outside wired or wireless way and centrifuge 1
Connection；Motion control apparatus 10 passes through 1 rotation center conducting slip ring 19 of centrifuge and the conductor wire and signal wire 20 on rotating arm
Connection, conductor wire and signal wire 20 connect the equipment in Laboratory Module 3, and Laboratory Module 3 reaches certain gravity in the operating of centrifuge 1 and accelerates
It starts to work after degree.
Experimental method:
1, before the operating of centrifuge 1, under normal gravity environment, experimental material is routed in experimental box 5, Laboratory Module 3 is pacified
It is attached in the centrifugal basket 2 of centrifuge 1, connects the conductor wire and signal wire 20 of control.
2, presetting 1 revolving speed of centrifuge or directly setting gravity value 10-160-200G, start centrifuge 1, wait centrifuge
When 1 operating reaches setting gravity value, 2 high speed rotation of centrifugal basket, and it is in horizontality；Starting control computer 22, if
Surely movement rate and move distance are pushed and pulled, by the power screw rod 14 of motor 15, power screw rod 14 drives 8 setting in motion of movable plate,
Material starts to deform in experimental box 5, wherein motion control rate reaches 0.00001mm/s.
3, while setting 8 setting in motion of movable plate, control computer 22 controls simultaneously opens 7 He of photographing equipment
Spatial digitizer 6,3 D deformation number at the top of material in the material anamorphic image and experimental box 5 in the transparent fixed plate 16 of time recording
According to.
4, when the distance that movable plate 8 moves reaches preset value, it is automatically stopped movement.Centrifuge 1 is closed to transport
Dynamic, centrifugal basket 2 restores suspension plumbness, and Laboratory Module 3 is taken out from centrifugal basket 2, takes out 7 He of photographing equipment
The data recorded in spatial digitizer 6 carry out experimental study.
The present invention is based on the simulation experiment of tectonics physics of long-armed super-magnum centrifuge, not only can highlight rock under Elevated Gravity
The flow deformation effect of stone, analog large scale infrastructure evolutionary process, can be to be related to the infrastructure of LITHOSPHERIC SCALE
Journey simulation provides maximally efficient research means, it is expected to grind as the important innovations for solving the problems, such as the great basic theory of geoscience
Study carefully means.
Claims (10)
1. a kind of Bidirectional power physical simulation experiment device for Elevated Gravity, it is characterised in that: including experimental box (5) and
Power device, the experimental box (5) is by being located at the fixed plate (11) of front and rear sides and positioned at movable plate (8) group of the left and right sides
At fixed plate (11) and movable plate (8) are arranged vertically, and experimental material is placed in experimental box (5), living under the action of power device
The two sidewalls of movable plate (8) move back and forth along fixed plate (11), to the experimental material being squeezed and deformed in experimental box (5).
2. Bidirectional power physical simulation experiment device according to claim 1, it is characterised in that: the power device includes
The power screw rod (14) being connect with movable plate (8) and motor (15) and speed reducer for power screw rod (14) offer power
(23), wherein the power screw rod (14) is set on power sliding rail (13), and is driven by the sliding on power sliding rail (13)
Movable plate (8) move back and forth.
3. Bidirectional power physical simulation experiment device according to claim 2, it is characterised in that: the motor (15) is vertical
Arrangement；The input shaft and output shaft of the speed reducer (23) are on same axis, and the axis vertical is arranged.
4. Bidirectional power physical simulation experiment device according to claim 1, it is characterised in that: on the movable plate (8)
It peripheral hardware or is opened up movable rail (9) equipped with movable slider (12), while on fixed plate (11), movable slider (12) is sliding in activity
Moving back and forth for movable plate (8) is realized in sliding in rail (9).
5. Bidirectional power physical simulation experiment device according to claim 4, it is characterised in that: the movable slider (12)
Positioned at two sides at the top of movable plate (8), the movable rail (9) is located at the top of fixed plate (11).
6. Bidirectional power physical simulation experiment device according to claim 1, it is characterised in that: the fixed plate (11) and
At least one piece in movable plate (8) is transparent fixed plate (16).
7. Bidirectional power physical simulation experiment device according to claim 6, it is characterised in that: the movable plate (8) is
Transparent fixed plate (16).
8. Bidirectional power physical simulation experiment device according to claim 1, it is characterised in that: the movable plate (8) with
The moving contact position of fixed plate (16) is equipped with sealing strip.
9. Bidirectional power physical simulation experiment device according to claim 1, it is characterised in that: the experimental provision is set to
In centrifugal basket (2), motion control apparatus (10) are additionally provided on centrifuge (1), which passes through wired
Or wireless mode is connect with the computer (22) of centrifuge (1) outside, while the motion control apparatus (10) passes through conductor wire and letter
Experimental provision in number line (20) connection hanging basket.
10. a kind of experiment side using the Bidirectional power physical simulation experiment device for being used for Elevated Gravity described in claim 9
Method, it is characterised in that include the following steps:
(1) before centrifuge (1) operating, under normal gravity environment, experimental material is routed in experimental box (5), experimental provision peace
It is attached in centrifugal basket (2), connects conductor wire and signal wire (20)；
(2) revolving speed or gravity value of presetting centrifuge (1), starting centrifuge (1) reach the revolving speed or again of setting to its operating
When force value, hanging basket rotates and is in horizontality；Start computer (22), set movable plate (8) movement rate and movement away from
From power device drives movable plate (8) setting in motion, and the experimental material in experimental box (5) starts to deform；
(3) while movable plate (8) moves, the deformation data of experimental box (5) interior experimental material is recorded；
(4) when the movement rate of movable plate (8) and move distance reach preset value, centrifuge is closed in stop motion
(1), centrifugal basket (2) restores suspension plumbness, takes out the experimental provision in hanging basket, carries out to the deformation data of record real
Test research.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189709A (en) * | 2020-03-04 | 2020-05-22 | 天津优瑞纳斯液压机械有限公司 | Two-dimensional extrusion stretching device |
| CN112750356A (en) * | 2021-01-28 | 2021-05-04 | 中国石油大学(华东) | Sand box model, physical simulation method and system for stretching deformation and application |
| CN112945739A (en) * | 2021-01-20 | 2021-06-11 | 南京大学 | Supergravity experimental device and experimental method for interaction of brittleness and toughness deformation |
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