CN115376393B - Boundary control panel of complex variable-rigidity three-dimensional model - Google Patents
Boundary control panel of complex variable-rigidity three-dimensional model Download PDFInfo
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- CN115376393B CN115376393B CN202211071503.9A CN202211071503A CN115376393B CN 115376393 B CN115376393 B CN 115376393B CN 202211071503 A CN202211071503 A CN 202211071503A CN 115376393 B CN115376393 B CN 115376393B
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 239000002689 soil Substances 0.000 abstract description 14
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 238000012876 topography Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 14
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920006268 silicone film Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/40—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for geology
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a boundary control board of a complex variable-rigidity three-dimensional model, which comprises a chute, a rigid frame, a three-dimensional boundary controller, a displacement rod and a film. The rigid frames are arranged in the sliding groove, the distance between the two groups of rigid frames is changed through the expansion and contraction of the expansion and contraction component, the three-dimensional boundary controller is arranged in the rigid frames, the displacement rod is arranged on the three-dimensional boundary controller, the top of the displacement rod is provided with a ball or square sheet with variable rigidity, the film is covered on the displacement rod, and the three-dimensional boundary controller controls the fluctuation of the displacement rod so as to generate a three-dimensional complex boundary with specific rigidity. The complex variable-rigidity three-dimensional model boundary control board can establish a complex three-dimensional loading and unloading boundary with controllable rigidity, can manufacture a rock-soil similar model with complex three-dimensional topography fluctuation, can effectively restrict the deformation of similar materials before solidification, reduces the damage of the similar model in the form removing process, and reduces the disturbance and damage to the similar model in the model preparation process.
Description
Technical Field
The invention relates to the technical field of rock and soil tests, in particular to a boundary control board of a complex variable-rigidity three-dimensional model.
Background
The geotechnical engineering similar model test is an important research means for researching geotechnical engineering problems at present, and is also the most widely used research means because the implementation difficulty is small, the threshold is relatively low, and the deformation rule and the damage characteristic of the actual geotechnical engineering problems can be accurately reproduced.
However, current rock-soil-like model boxes are typically simple rectangular, trapezoidal frames with no internal boundary support, and thus it is difficult to prepare high-precision rock-soil-like models with complex three-dimensional morphology. Meanwhile, the strength of the similar material before solidification is low, deformation is easy to occur in the manufacturing process, and the similar material is easy to damage due to disturbance, so that the rock-soil similar model manufacturing success rate is low, and the manufacturing precision is difficult to ensure. Also, limited by the ultimate load of the instrumentation and site, model test sizes are generally small, especially shaking table model tests, centrifuge model tests. Because of the smaller size of the model, in order to improve the success rate of the manufacturing and testing of the similar model, only the precision of the model manufacturing can be reduced, for example, the shape, structure and material composition of the similar model test are simplified. Further, the boundary rigidity is different, and deformation and damage characteristics generated by excavation unloading are different, so that the influence of the internal boundary rigidity on the excavation unloading characteristics cannot be considered by the conventional similar model.
In summary, it can be seen that the current rock-soil similar model has low manufacturing precision and low manufacturing success rate, and the existing rock-soil similar model has simple manufacturing, and is difficult to accurately reflect the complicated actual geotechnical engineering problem, and a device capable of improving the manufacturing success rate of the similar model and the test success rate of the similar model is needed.
Disclosure of Invention
Based on the problems, the existing rock-soil similar model is low in manufacturing precision and low in manufacturing success rate, and the existing rock-soil similar model is simple to manufacture and difficult to accurately reflect complex actual rock-soil engineering, so that the complex variable-rigidity three-dimensional model boundary control board is provided.
A complex variable stiffness three-dimensional model boundary control panel comprising:
a chute;
the rigid frames are slidably arranged in the sliding grooves, two groups of rigid frames extend out of the two ends of the sliding grooves respectively, the two groups of rigid frames are connected through a telescopic assembly, and the telescopic assembly stretches to change the distance between the two groups of rigid frames;
the three-dimensional boundary controllers are arranged in the rigid frames, two groups of three-dimensional boundary controllers are arranged in the two groups of rigid frames respectively;
the displacement rods are movably arranged on the three-dimensional boundary controller, and a plurality of groups of the displacement rods are distributed on the three-dimensional boundary controller in an array manner; and
And the film is covered on the displacement rod, and the fluctuation of the displacement rod relative to the three-dimensional boundary controller can deform the film to form a three-dimensional boundary.
In one embodiment, the telescopic component comprises two screws and a nut sleeve, the two screws are respectively connected with the two groups of rigid frames, the two screws are respectively screwed at two ends of the nut sleeve, and the threads of the two screws are opposite in screwing direction.
In one embodiment, the telescopic assembly further comprises a force arm lever, the force arm lever is connected with the nut sleeve, and the force arm lever extends out of the sliding groove.
In one embodiment, the three-dimensional boundary controller is made of flexible materials, a mounting hole for the displacement rod to penetrate is formed in the three-dimensional boundary controller, and the side wall of the mounting hole deforms to clamp the displacement rod.
In one embodiment, the three-dimensional boundary controller is mounted in the rigid frame through a fixing structure, the fixing structure comprises a squeeze plate and a connecting assembly, the squeeze plate is arranged on the three-dimensional boundary controller, the connecting assembly is connected with the squeeze plate and the rigid frame, the squeeze plate is matched with the rigid frame to vertically clamp the three-dimensional boundary controller, and accordingly the side wall of the mounting hole is deformed inwards to clamp the displacement rod.
In one embodiment, the connecting structure comprises a compression bolt, a nut and an extrusion gasket, wherein the compression bolt sequentially penetrates through the rigid frame, the three-dimensional boundary controller and the extrusion plate and is then locked and fixed through the nut, the extrusion gasket is sleeved on the compression bolt, and the extrusion gasket is located between the nut and the extrusion plate.
In one embodiment, the device further comprises a boundary body with controllable rigidity, the boundary body is mounted on the displacement rod, and the film covers the boundary body.
In one embodiment, the bounding volume is a bounding sphere or a bounding block.
In one embodiment, the end of the rigid frame away from the chute is provided with an elastic friction pad.
In one embodiment, the elastic friction pad is a rubber strip, and the film is made of silica gel.
The boundary control board of the complex variable stiffness three-dimensional model has at least the following advantages:
the telescopic component stretches out and draws back in order to change the distance between two sets of rigidity frames, and then changes the length of control panel, realizes fixing in the model case. The initial closed three-dimensional boundary is formed by controlling the fluctuation of the displacement rod, so that the continuity and smoothness of the three-dimensional boundary can be further ensured by the film, and the precision of the three-dimensional boundary is improved. By combining a plurality of boundary control plates, a complex three-dimensional internal boundary can be flexibly formed in the model box, so that a rock-soil similar model with complex three-dimensional topography fluctuation is manufactured, and the manufacturing precision of the current rock-soil similar model is effectively improved.
And the generated internal boundary can effectively restrict the deformation of the similar material before solidification, reduce disturbance and damage to the similar model in the model preparation process, and further improve the preparation success rate of the similar model and the test success rate of the similar model. The three-dimensional boundary control board is low in manufacturing cost and flexible in application scene, can be used for rock-soil similar model test, can be applied to other scenes needing complex internal boundaries, and has wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described. Throughout the drawings, the elements or portions are not necessarily drawn to actual scale.
FIG. 1 is a schematic structural diagram of a boundary control panel of a complex variable stiffness three-dimensional model in one embodiment;
FIG. 2 is a top view of the boundary control panel of the complex variable stiffness three-dimensional model of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a perspective cross-sectional view of the boundary control panel of the complex variable stiffness three-dimensional model shown in FIG. 1;
FIG. 5 is a schematic illustration of the force arm lever and nut sleeve connection of FIG. 1;
FIG. 6 is a schematic diagram of the squeeze plate and rigid frame vertically clamped three-dimensional boundary controller of FIG. 3;
FIG. 7 is a schematic view of a mounting hole of a three-dimensional boundary controller deforming inward to hold a displacement rod;
FIG. 8 is a schematic illustration of a plurality of displacement beams undulating to form a three-dimensional boundary.
Reference numerals:
10-sliding grooves, 20-rigid frames, 22-telescopic components, 222-screws, 224-nut sleeves, 226-force arm rods, 30-three-dimensional boundary controllers, 32-mounting holes, 40-displacement rods, 42-extrusion plates, 44-connecting components, 442-compression bolts, 444-nuts, 446-extrusion gaskets, 50-films, 60-boundary bodies and 70-elastic friction pads.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, in one embodiment, a boundary control board of a complex variable stiffness three-dimensional model is used for being fixed in a model box, a similar material is filled at the bottom of the boundary control board of the complex variable stiffness three-dimensional model, and the boundary control board of the complex variable stiffness three-dimensional model can form a complex three-dimensional boundary on the similar material.
Specifically, the boundary control board of the complex variable stiffness three-dimensional model comprises a chute 10, a rigid frame 20, a three-dimensional boundary controller 30, a displacement rod 40 and a film 50. The rigid frame 20 is slidably mounted in the chute 10, and two groups of rigid frames 20 are provided, and the two groups of rigid frames 20 respectively extend out from two ends of the chute 10. The two sets of rigid frames 20 are connected by a telescopic assembly 22, and the telescopic assembly 22 stretches to change the distance between the two sets of rigid frames 20.
Referring to fig. 2 and 3, in one embodiment, the telescopic assembly 22 includes two screws 222 and a nut sleeve 224, and the two screws 222 are respectively connected to the two sets of rigid frames 20. The two screws 222 are respectively screwed at two ends of the nut sleeve 224, and the threads of the two screws 222 are opposite in rotation direction. By rotating the nut sleeve 224, the two screws 222 can extend out of the nut sleeve 224 or retract into the nut sleeve 224, so as to change the distance between the two groups of rigid frames 20, and further adjust the length of the boundary control board of the complex variable-rigidity three-dimensional model.
It will be appreciated that in other embodiments, the telescoping assembly 22 may take other configurations to effect movement of the rigid frame 20 relative to one another. For example, the telescopic assembly 22 may be a hydraulic rod, an electric telescopic rod, a screw slider or the like.
Referring to fig. 5, further, the telescopic assembly 22 further includes a force arm 226, the force arm 226 is connected to the nut sleeve 224, and the force arm 226 passes out of the chute 10 through the opening of the chute 10. The arm rod 226 can provide objective lateral pressure to the nut sleeve 224, so as to ensure a fixing effect and prevent the nut sleeve 224 from rotating. Specifically, the nut sleeve 224 is provided with a groove, and the arm 226 is inserted into the groove of the nut sleeve 224, so that the arm 226 is connected with the nut sleeve 224.
Referring to fig. 3 and 4, the three-dimensional border controllers 30 are installed in the rigid frames 20, two sets of three-dimensional border controllers 30 are provided, and the two sets of three-dimensional border controllers 30 are installed in the two sets of rigid frames 20 respectively. The displacement rods 40 are movably mounted on the three-dimensional boundary controller 30, and a plurality of groups of displacement rods 40 are distributed in an array on the three-dimensional boundary controller 30. Wherein, by controlling the heave of the displacement rod 40 on the three-dimensional boundary controller 30, the end of the displacement rod 40 can form a primarily closed three-dimensional boundary.
Referring to fig. 6 and fig. 7 together, in one embodiment, the three-dimensional boundary controller 30 is made of a flexible material with high elasticity, such as a silicone with high elasticity. The rigid frame 20 has a cavity for accommodating the three-dimensional boundary controller 30, the three-dimensional boundary controller 30 is placed in the cavity, and the rigid frame 20 is provided with a hole for the displacement rod 40 to pass through. The three-dimensional boundary controller 30 is provided with a mounting hole 32 for displacement penetration, and the side wall of the mounting hole 32 deforms to clamp the displacement rod 40.
The side wall deformation of the mounting hole 32 can clamp the displacement rod 40 in two ways, one is that the aperture of the mounting hole 32 is smaller than the diameter of the displacement rod 40, the displacement rod 40 is clamped into the mounting hole 32, and the side wall deformation of the mounting hole 32 clamps the displacement rod 40; alternatively, the mounting hole 32 is deformed like a kidney-shaped hole, and the sidewall distances on opposite sides of the mounting hole 32 are reduced to clamp the displacement rod 40.
In an embodiment, the three-dimensional border controller 30 is installed in the rigid frame 20 through a fixing structure, the fixing structure comprises a squeeze plate 42 and a connecting component 44, the squeeze plate 42 is arranged on the three-dimensional border controller 30, the connecting component 44 connects the pressurizing plate and the rigid frame 20 to realize that the squeeze plate 42 is matched with the rigid frame 20 to vertically clamp the three-dimensional border controller 30, and the three-dimensional border controller 30 is vertically clamped and deformed to enable the side wall of the mounting hole 32 to be inwards deformed to clamp the displacement rod 40.
Referring to fig. 3 and 4 again, further, the connection structure includes a compression bolt 442, a nut 444 and a compression washer 446, where the compression bolt 442 sequentially passes through the rigid frame 20, the three-dimensional boundary controller 30 and the compression plate 42, and is then locked and fixed by the nut 444. The extrusion gasket 446 is sleeved on the compression bolt 442, the extrusion gasket 446 is located between the nut 444 and the extrusion plate 42, and the extrusion gasket 446 can protect the extrusion plate 42 from being damaged by the nut 444.
Referring to fig. 8, the film 50 is covered on the displacement rod 40, and the fluctuation of the displacement rod 40 relative to the three-dimensional boundary controller 30 can deform the film 50 to form a three-dimensional boundary. Specifically, the film 50 is a high-elongation and silicone film 50, the end of the displacement rod 40 can form a preliminarily closed three-dimensional boundary, and the film 50 can ensure the continuity and smoothness of the three-dimensional boundary, so that the accuracy of manufacturing a similar model is improved.
In one embodiment, the boundary control panel of the complex variable stiffness three-dimensional model further comprises a boundary body 60 with controllable stiffness, the boundary body 60 is mounted on the displacement rod 40, and the membrane 50 covers the boundary body 60. The rigidity of the boundary body 60 can be adjusted, so that an internal boundary with controllable rigidity is generated, the influence of the rigidity of the boundary on the deformation and the damage of the similar model can be better analyzed, and the accuracy and the application range of the similar model test are improved.
Further, the film 50 is adhered to the boundary body 60, so as to avoid the film 50 from being separated from the boundary body 60. The bounding volume 60 may be a bounding sphere or a bounding block. Of course, the shape of the boundary body 60 may be specifically set according to practical requirements, such as regular or irregular shapes. The boundary bodies 60 may be in contact with each other or there may be a fine seam between the boundary bodies 60 to avoid the boundary body 60 contact affecting the stability of operation.
In an embodiment, the end of the rigid frame 20 far away from the chute 10 is provided with an elastic friction pad 70, when the boundary control board of the complex variable stiffness three-dimensional model is installed in the model box, the length of the boundary control board of the complex variable stiffness three-dimensional model is adjusted to enable the length of the whole boundary control board of the complex variable stiffness three-dimensional model to be larger than the width of the inside of the model box, and the elastic friction pad 70 generates deformation and pressurization to generate considerable friction force so as to be fixedly controlled. In particular, the elastic friction pad 70 may be a rubber friction bar.
The working principle of the boundary control board of the complex variable stiffness three-dimensional model is as follows:
the nut sleeve 224 is rotated to adjust the distance between the two rigid frames 20, so that the length of the boundary control plate of the complex variable-rigidity three-dimensional model is slightly larger than the width of the inside of the model box, and the arm rod 226 is connected with the nut sleeve 224.
And then the complex variable-rigidity three-dimensional model boundary control board is arranged in the model box, and the elastic friction pads 70 on the outer sides of the left and right rigid frames 20 deform and pressurize to realize that the complex variable-rigidity three-dimensional model boundary control board is fixed in the model box.
The three-dimensional topography relief of the boundary control panel is determined by the different vertical relief of the plurality of displacement beams 40, when the vertical relief of the displacement beams 40 is determined. The compression bolt 442 sequentially penetrates through the rigid frame 20, the three-dimensional boundary controller 30, the compression plate 42 and the compression gasket 446, and is locked and fixed through the nut 444, so that the compression force is applied to the three-dimensional boundary controller 30, and the mounting hole 32 in the three-dimensional boundary controller 30 is deformed, so that the displacement rod 40 is clamped.
The boundary bodies 60 at the ends of the displacement rod 40 are closely contacted with each other to form a primarily closed three-dimensional boundary. The film 50 is stuck on the boundary body 60, so that the sealing performance and the continuity of the three-dimensional boundary are ensured, and the three-dimensional boundary precision is improved. Meanwhile, a plurality of three-dimensional boundary control boards can be combined for use, so that a three-dimensional inner boundary with larger gauge and more complex three-dimensional appearance is generated.
The boundary control board of the complex variable stiffness three-dimensional model has at least the following advantages:
1. the boundary control board can be disassembled and combined at will in the model box to generate a complex three-dimensional inner boundary, so that a rock-soil similar model with complex three-dimensional topography fluctuation is manufactured, and the manufacturing precision of the current rock-soil similar model is effectively improved.
2. The rigidity of the top boundary body 60 forming the complex three-dimensional inner boundary can be adjusted, so that the inner boundary with controllable rigidity is generated, the influence of the rigidity of the boundary on the deformation and damage of the similar model can be better analyzed, and the accuracy and application range of the similar model test are improved.
3. The generated inner boundary can effectively restrict the deformation of the similar material before solidification, reduce disturbance and damage to the similar model in the model preparation process, and further improve the preparation success rate of the similar model and the test success rate of the similar model.
4. The complex variable-rigidity three-dimensional model boundary control board is low in manufacturing cost and flexible in application scene, can be used for rock-soil similar model tests, can be applied to other scenes needing complex internal boundaries, and has wide application prospects.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (5)
1. A complex variable stiffness three-dimensional model boundary control panel, comprising:
a chute;
the rigid frames are slidably arranged in the sliding grooves, two groups of rigid frames extend out of the two ends of the sliding grooves respectively, the two groups of rigid frames are connected through a telescopic assembly, and the telescopic assembly stretches to change the distance between the two groups of rigid frames;
the three-dimensional boundary controllers are arranged in the rigid frames, two groups of three-dimensional boundary controllers are arranged in the two groups of rigid frames respectively;
the displacement rods are movably arranged on the three-dimensional boundary controller, and a plurality of groups of the displacement rods are distributed on the three-dimensional boundary controller in an array manner; and
The thin film is covered on the displacement rod, and the fluctuation of the displacement rod relative to the three-dimensional boundary controller can deform the thin film to form a three-dimensional boundary;
the telescopic component comprises two screws and a nut sleeve, the two screws are respectively connected with the two groups of rigid frames, the two screws are respectively screwed at two ends of the nut sleeve, and the screw threads of the two screws are opposite in screwing direction;
the telescopic assembly further comprises a force arm rod, the force arm rod is connected with the nut sleeve, and the force arm rod extends out of the sliding groove;
the three-dimensional boundary controller is made of flexible materials, a mounting hole for the displacement rod to penetrate is formed in the three-dimensional boundary controller, and the side wall of the mounting hole deforms to clamp the displacement rod;
the three-dimensional boundary controller is arranged in the rigid frame through a fixing structure, the fixing structure comprises an extrusion plate and a connecting assembly, the extrusion plate is arranged on the three-dimensional boundary controller, the connecting assembly is connected with the extrusion plate and the rigid frame, and the extrusion plate is matched with the rigid frame to vertically clamp the three-dimensional boundary controller so that the side wall of the mounting hole is deformed inwards to clamp the displacement rod;
the connecting assembly comprises a compression bolt, a nut and an extrusion gasket, wherein the compression bolt sequentially penetrates through the rigid frame, the three-dimensional boundary controller and the extrusion plate, then the compression bolt is locked and fixed through the nut, the extrusion gasket is sleeved on the compression bolt, and the extrusion gasket is located between the nut and the extrusion plate.
2. The boundary control panel of the complex variable stiffness three-dimensional model according to claim 1, further comprising a stiffness controllable boundary body mounted on the displacement rod, the membrane covering the boundary body.
3. The complex variable stiffness three dimensional model boundary control panel of claim 2, wherein the bounding volume is a bounding sphere or a bounding block.
4. The boundary control panel of the complex variable stiffness three-dimensional model according to claim 1, wherein the end of the rigid frame away from the chute is provided with an elastic friction pad.
5. The boundary control panel of a complex variable stiffness three-dimensional model according to claim 4, wherein the elastic friction pad is a rubber strip and the membrane is made of silica gel.
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| CN115376393B true CN115376393B (en) | 2024-02-09 |
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