CN118150311A - Active and passive control lateral limiting device and method of pressure shear composite loading system - Google Patents
Active and passive control lateral limiting device and method of pressure shear composite loading system Download PDFInfo
- Publication number
- CN118150311A CN118150311A CN202410251389.0A CN202410251389A CN118150311A CN 118150311 A CN118150311 A CN 118150311A CN 202410251389 A CN202410251389 A CN 202410251389A CN 118150311 A CN118150311 A CN 118150311A
- Authority
- CN
- China
- Prior art keywords
- load sensor
- lateral
- base
- sliding
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000670 limiting effect Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 69
- 238000006073 displacement reaction Methods 0.000 claims abstract description 41
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000036316 preload Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 230000001066 destructive effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 10
- 238000010008 shearing Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a method for a lateral limiting device of a pressure shear combined loading system under active and passive control, and belongs to the technical field of structural strength. The method solves the problems that most of the compression shear compound test processes do not monitor lateral displacement, and the wallboard is unstable when the wallboard is subjected to larger displacement, so that the test is in destructive failure. The device comprises a connecting component, a load sensor, a jacking device and a sliding component, wherein the connecting component, the load sensor, the jacking device and the sliding component are sequentially connected, and the movement direction of the jacking device is perpendicular to the movement direction of the sliding component. The invention accurately monitors the lateral displacement in the compression-shear composite test process, prevents or limits the lateral displacement to a larger extent in the wallboard, has good wallboard stability, and is favorable for the smooth performance of the test.
Description
Technical Field
The invention relates to a lateral limiting device and a lateral limiting method, and belongs to the technical field of structural strength.
Background
Composite materials have been used in aerospace in large numbers in recent years as a light, high temperature, impact and fatigue resistant excellent material. Particularly in critical parts of an aircraft, such as the fuselage, wings, tail wing, etc. The composite material has good post-buckling bearing capacity, and the stability of the aircraft can be effectively improved by using the reinforced wallboard of the composite material in the vertical fin structure of the aircraft, and meanwhile, the weight of the aircraft can be greatly reduced. In actual service, the panel will be subjected to a combination of extreme compressive and in-plane shear loads. The complex bearing condition can lead to the reduction of the bearing capacity of the wallboard, and especially, the orthotropic property of the composite material can lead to material failure when the composite bearing is pressed and sheared, thereby reducing the bearing capacity and affecting the operation safety of an airplane. For the damage and destruction process of the simulated composite material reinforced wallboard, most of the simulation processes adopt a compression-shear composite device for experimental study.
However, during the compression shear composite test, additional lateral displacement is inevitably generated. The wall plate naturally undergoes displacement in the same direction as the axial compressive load, this partial axial displacement being permitted. However, as the side edge of the wall plate to which the shearing force is applied is displaced in a direction perpendicular to the axial compression direction, the displacement of the side edge is not allowed for the compression-shear compound test of the wall plate. With increasing load, larger, impermissible displacements of the panel will cause the panel to destabilize, especially for larger volume composite stiffened panel structures, where shear induced deformation is significant and destructive failure will occur without restraint.
Therefore, it is needed to provide a lateral limiting device and a method for active and passive control of a press-shear combined loading system, so as to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the problem that most of the compression shear compound test processes do not monitor lateral displacement, the wall plate is unstable when large displacement occurs to the wall plate, and destructive failure occurs to the test, and provides a lateral limiting device and a lateral limiting method for active and passive control of a compression shear compound loading system, and brief summary of the invention is provided below to provide basic understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
The technical scheme of the invention is as follows:
The active and passive control lateral limiting device of the pressure shear compound loading system comprises a connecting component, a load sensor, a jacking device and a sliding component, wherein the connecting component, the load sensor, the jacking device and the sliding component are sequentially connected, and the movement direction of the jacking device is perpendicular to the movement direction of the sliding component.
Preferably: the connecting assembly comprises a connecting earring and a pin shaft, the test piece is provided with the earring, the earring of the test piece is coaxially arranged with the connecting earring, and the pin shaft is inserted into the connecting earring and the inside of the earring.
Preferably: the device comprises a jacking device, a lifting device, a load sensor, a display instrument, a threaded rod, a lifting device and a lifting device, wherein the display instrument is further included, the load sensor is electrically connected with the display instrument, the upper portion of the load sensor is a detection end, the detection end is provided with a threaded hole, the lower portion of the connecting earring is provided with the threaded rod, the threaded rod is connected with the detection end of the upper portion of the load sensor through the threaded hole, and the load sensor is arranged on the upper portion of the jacking device.
Preferably: the device also comprises a limit screw and a connecting section transition base, wherein the limit screw passes through the upper part of the connecting section transition base, the lower part of the jacking device and the upper part of the jacking device.
Preferably: the sliding component comprises a sliding block and a sliding rail, the connecting section transition base is arranged on the upper portion of the sliding block, and the lower portion of the sliding block is in sliding connection with the sliding rail.
Preferably: still include base, slide rail base bolt, slide rail bolt, slider bolt and sensor bolt, linkage segment transition base lower part is connected with the slider through the slider bolt, and the slide rail passes through slide rail bolt to be connected with base upper portion, and the base lower part is connected with the reaction frame through slide rail base bolt, and load sensor passes through sensor bolt and jacking device upper portion connection.
The active and passive control lateral limiting method of the compression-shear composite loading system comprises the following steps:
Step one: fixing the base on the reaction frame; fixing the sliding rail on the base through fixing; sliding the sliding block into the sliding rail along the X direction, and smearing lubricating grease on the contact surface of the sliding block and the sliding rail;
Step two: connecting the connecting section transition base to the sliding block; the jacking device, the connecting section transition base and the load sensor are connected together through a limiting screw, the limiting screw plays a role in positioning, the limiting screw is not fastened, and therefore displacement which keeps the degree of freedom in the Y direction can be actively regulated and controlled through the jacking device; connecting the threaded rod on the connecting earring in the threaded hole on the load sensor; finally, the connecting ear ring is hinged with the test piece through a pin shaft;
step three: the load sensor is connected with the display instrument;
Step four: lifting the connecting earring by actively adjusting the jacking device, observing the load value of a load sensor displayed on the display instrument, and predicting 2% -3% of the maximum load according to an actual test piece to be a pre-load initial value, namely stopping hydraulic loading of the jacking device when the value displayed on the display instrument reaches the pre-load initial value; at this time, the whole lateral limiting device is in a limiting critical state;
Step five: the lateral limiting device limits the vertical (namely Y-direction) displacement of the test piece; meanwhile, the test piece can generate transverse displacement under the action of transverse (namely X-direction) ballast, and the slide block with the lateral limiting system passively slides along the slide rail;
Step six: because the lateral limiting device limits the lateral displacement of the test piece, the lateral limiting device can generate pressure, and the partial load can be monitored by the display instrument.
The invention has the following beneficial effects:
1. In the invention, the lateral limiting devices are independently allowed in two directions and are mutually connected without interference, so that the lateral displacement of the test piece can be effectively limited while the axial pressure displacement is ensured.
2. The sliding component can effectively reduce the friction force of the device in the other direction, so that the displacement influence on the direction which is not limited is relieved;
3. The jacking device can flexibly adjust the height according to the position of the wallboard, so that the problem that the limiting effect is not ideal due to the assembly error generated between the device and the test piece is avoided;
4. The force sensor assembled by the invention can monitor and limit the load of the displacement area in real time so as to adjust the application of the load in real time, accurately monitor the lateral displacement in the compression-shear composite test process, prevent or limit the displacement of the wallboard from being larger, and has good wallboard stability, thereby being beneficial to the smooth performance of the test.
Drawings
FIG. 1 is a schematic structural view of a passive and active controlled lateral stop device of a compression shear compound loading system;
FIG. 2 is a perspective view of a passively-controlled lateral spacing device of a compression shear compound loading system;
FIG. 3 is a state diagram of the use of the active and passive controlled lateral stop device of the compression shear compound loading system.
In the figure: the device comprises a 1-connection earring, a 2-pin shaft, a 3-load sensor, a 4-display instrument, a 5-jacking device, a 6-limit screw, a 7-connection section transition base, an 8-slider, a 9-slide rail, a 10-base, a 11-slide rail base bolt, a 12-slide rail bolt, a 13-slider bolt, a 14-sensor bolt, a 15-reaction frame and a 16-wallboard.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The first embodiment is as follows: 1-2, the active-passive control lateral limiting device of the pressure shear combined loading system of the embodiment comprises a connecting component, a load sensor 3, a jacking device 5 and a sliding component, wherein the connecting component, the load sensor 3, the jacking device 5 and the sliding component are sequentially connected, the movement direction of the jacking device 5 is perpendicular to the movement direction of the sliding component, and the movement direction of the jacking device 5 is parallel to the plane of a wallboard 16 (test piece); the test piece is perpendicular to the horizontal plane, the jacking device is vertically placed and moves vertically, the horizontal operation is caused by the sliding assembly, and the lateral limiting devices are independently allowed in two directions and are mutually connected without interference, so that the lateral displacement of the test piece can be effectively limited while the axial pressure displacement is ensured, the lateral displacement is actually perpendicular to the horizontal plane, and the test piece is in the vertical Y direction.
The second embodiment is as follows: referring to fig. 1-2, the embodiment is described as a passive and active control lateral limiting device of a press-shear combined loading system, the connecting assembly comprises a connecting ear ring 1 and a pin shaft 2, the end part of a wall plate of a test piece is provided with the ear ring, the ear ring of the test piece is coaxially arranged with the connecting ear ring 1, and the pin shaft 2 is inserted into the connecting ear ring 1 and the ear ring.
And a third specific embodiment: 1-2, the active-passive control lateral limiting device of the pressure-shear combined loading system of the embodiment further comprises a display instrument 4, the load sensor 3 is electrically connected with the display instrument 4, the upper part of the load sensor 3 is a detection end, the detection end is provided with a threaded hole, the lower part of the connecting earring 1 is provided with a threaded rod, the threaded rod is connected with the detection end at the upper part of the load sensor 3 through the threaded hole, the load sensor 3 is arranged at the upper part of the jacking device 5, the force sensor assembled by the invention can monitor and limit the load of a displacement area in real time so as to adjust the application of the load in real time, and the jacking device 5 is a rigid hydraulic jacking device, namely a hydraulic jack or a hydraulic rod; the invention monitors the lateral displacement in the compression-shear composite test process, prevents or limits the larger displacement of the wallboard, has good wallboard stability, and is favorable for the smooth performance of the test.
The specific embodiment IV is as follows: 1-2, the active and passive control lateral limiting device of the pressing and shearing combined loading system of the embodiment further comprises a limiting screw rod 6 and a connecting section transition base 7, flanges are arranged at the upper end and the lower end of the jacking device 5 and the connecting section transition base 7, connecting holes are formed in the flanges, the connecting holes are threaded holes, the limiting screw rod 6 penetrates through the connecting holes of the upper flange of the connecting section transition base 7, the connecting holes of the lower flange of the jacking device 5 and the connecting holes of the upper flange of the jacking device 5, stable connection is achieved, the height stability of the jacking device is guaranteed, detachable connection can be achieved, and the connecting section transition bases 7 with different specifications can be replaced to further adapt to different distances; or the limit screw rod 6 is in threaded connection with a connecting hole of the upper flange of the connecting section transition base 7 and a connecting hole of the lower flange of the jacking device 5, and the limit screw rod 6 is in sliding connection with the connecting hole of the upper flange of the jacking device 5.
Fifth embodiment: 1-2, the active and passive control lateral limiting device of the pressing and shearing combined loading system of the embodiment comprises a sliding block 8 and a sliding rail 9, wherein a connecting section transition base 7 is arranged at the upper part of the sliding block 8, and the lower part of the sliding block 8 is in sliding connection with the sliding rail 9; in general, when the compound load is loaded, the degree of freedom of the test piece in other directions is inevitably influenced when the displacement of the test piece in one direction is limited, and the design of the sliding component can effectively reduce the friction force of the device in the other direction, so that the influence on the displacement in the direction which is not limited is relieved.
Specific embodiment six: referring to fig. 1-2, the lateral limiting device for active and passive control of the press-shear combined loading system in this embodiment further includes a base 10, a slide rail base bolt 11, a slide rail bolt 12, a slide block bolt 13, and a sensor bolt 14, wherein a flange at the lower part of the connecting section transition base 7 is connected with the slide block 8 through the slide block bolt 13, the slide rail 9 is connected with the upper part of the base 10 through the slide rail bolt 12, the lower part of the base 10 is connected with a reaction frame 15 through the slide rail base bolt 11, and the load sensor 3 is connected with the flange at the upper part of the jacking device 5 through the sensor bolt 14.
Seventh embodiment: 1-2, the active-passive control lateral limiting device of the pressure-shear composite loading system is adopted, and the active-passive control lateral limiting device is abbreviated as lateral limiting device and comprises a passive control system, an active control system and a load monitoring system, wherein the passive control system consists of a sliding block, a sliding rail and a sliding rail base (abbreviated as base), the sliding rail base is used for fixing the device on a reaction frame, and as shown in FIG. 3, the compression and shearing shafts are used for loading a test piece 15; the direction of the applied force is marked in the figure, the direction of the axial pressure of the compression shear test is assumed to be the X direction, the sliding rail is fixed on the base of the sliding rail along the X direction, and the sliding block is inserted into the sliding rail to be connected so as to ensure that the sliding block can freely slide on the sliding rail along the X direction; the active control system consists of a rigid hydraulic jacking device (jacking device for short), a limit screw, a connecting section transition base, a connecting lug and a pin shaft, wherein one end of the connecting section transition base is connected with the top surface of a sliding block in the passive control system through a bolt, the other end of the connecting section transition base is connected with the rigid hydraulic jacking device, the rigid hydraulic jacking device can carry out Y-direction displacement adjustment through a hydraulic control rod, the limit screw can prevent the hydraulic device from damaging a test piece due to large displacement caused by improper operation, the connecting lug and the pin shaft play a role in connecting the limit device with a limit position of a wallboard, and the design of the lug and the pin shaft can ensure the limit of pulling and pressing bidirectional loads; the load monitoring system consists of a load sensor and a display instrument, wherein the sensor is fixed between a connecting pin shaft and the upper plane of a rigid hydraulic jacking device, can measure the pressure or tension value of the load sensor and is monitored by the connected display instrument, and the load monitoring system is particularly suitable for a composite reinforced wallboard structure with larger volume, not only limits large deformation caused by shearing force, but also ensures that displacement in the axial pressure direction has no corresponding resistance interference, the displacement in the axial pressure direction can smoothly occur, and accurately controls the deformation of a wallboard in a pressure shear composite experiment, and comprises the following steps:
Step one: in the passive control system, a base 10 is fixed on a reaction frame 15 through a slide rail base bolt 11; the slide rail 9 is fixed on the base 10 through a slide rail bolt 12; sliding the sliding block 8 onto the sliding rail 9 along the X direction, and simultaneously, coating lubricating grease on the contact surface of the sliding block 8 and the sliding rail 9;
Step two: in the active control system, a bottom plate of a connecting section transition base 7 is connected to a sliding block 8 in a passive control system through a sliding block bolt 13; the jacking device 5, the top plate of the connecting section transition base 7 and the load sensor 3 in the load monitoring system are connected together through the limiting screw rod 6, the limiting screw rod 6 plays a role in positioning, the limiting screw rod 6 is not fastened, the displacement which reserves the degree of freedom in the Y direction can be vertically regulated and controlled through the jacking device 5, and the jacking device 5 can be a jack; then the threaded rod on the connecting earring 1 is connected into the threaded hole on the load sensor 3; finally, the connecting earring 1 is hinged with the test piece through a pin shaft 2; the axial direction of the pin shaft is perpendicular to the direction of the sliding rail 9;
Step three: in the load monitoring system, a load sensor 3 is connected with a display instrument 4, and the load sensor 3 and the display instrument 4 are started;
Step four: lifting the connecting earring 1 by actively adjusting the jacking device 5, observing the load value of the load sensor 3 displayed on the display instrument 4, and predicting 2% of the maximum load according to an actual test piece to be a pre-load initial value, namely stopping hydraulic loading of the jacking device 5 when the value displayed on the display instrument 4 reaches the pre-load initial value; at this time, the whole lateral limiting device is in a limiting critical state; the rigid hydraulic jacking device can flexibly adjust the height according to the position of the wallboard, so that the problem that the limiting effect is not ideal due to the assembly error generated between the device and the test piece is avoided;
the actual shear flow of the compression shear exceeds the bearing capacity of the test piece, so that the test piece can be damaged or failed under side load, and the critical state needs to be considered; the following reasons are given for setting the critical state of the lateral limit device:
1. Ensuring the safety: by setting the critical state, the maximum bearing capacity of the test piece can be ensured not to be exceeded in the test process; the test piece is prevented from being broken or damaged due to overlarge load, so that the safety of the test process is ensured;
2. Exploration of limit conditions: setting a critical state allows us to explore the ultimate bearing capacity of the test piece in the test; by approaching the maximum load capacity of the test piece, the strength and stability of the test piece can be known, and important references are provided for design and engineering decisions in practical application;
3. and (3) formulating a reliability index: by setting the critical state, the performance and reliability of the test piece under the limit load can be evaluated; the method is helpful for determining whether the test piece meets the design requirement, and provides basis for product improvement and optimization;
Step five: performing a compression-shear compound test of the wallboard test piece, wherein the lateral limiting device limits the vertical (namely Y-direction) displacement of a limiting point of the test piece in the loading process; at the same time, the test piece will generate transverse displacement under the action of transverse (i.e. X direction) ballast, and the sliding block 8 with the lateral limit system passively slides along the sliding rail 9; the loading process comprises the process that the compression and shearing test shafts jointly apply pressure and shearing force;
Step six: in the loading process, the lateral limiting device limits the lateral displacement of the test piece, so that the lateral limiting device can generate pressure, and the partial load is subjected to load monitoring through the display instrument 4 in the load monitoring system, so that the actual shear flow received in the test piece can be calculated, verification can be performed, and the monitoring and early warning effects can be achieved to prevent the damage of the device caused by overlarge lateral load;
Calculating actual shear flow: the lateral limiting device limits the test piece, and the generated pressure can be monitored and recorded through a display instrument in the load monitoring system; however, the actual shear flow is often complex, the calculation needs to be determined according to a plurality of parameters, and the calculation is difficult;
verifying the carrying capacity of the test piece: if the actual shear flow exceeds the load carrying capacity of the test piece, the test piece may be damaged or fail under side load; this can be used to verify that the design of the test piece meets the requirements or as a basis for improving the design;
early warning function: in the test process, a proper early warning threshold value can be set; when the actual shear flow value reaches or approaches to the early warning threshold value, the display instrument 4 in the load monitoring system can send out an alarm or trigger other early warning mechanisms; this helps to find out in time that the side load is too high and take corresponding measures, such as stopping the loading or adjusting the loading parameters, to prevent damage to the test device or failure of the test piece.
It should be noted that, in the above embodiments, as long as the technical solutions that are not contradictory can be arranged and combined, those skilled in the art can exhaust all the possibilities according to the mathematical knowledge of the arrangement and combination, so the present invention does not describe the technical solutions after the arrangement and combination one by one, but should be understood that the technical solutions after the arrangement and combination have been disclosed by the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a press and cut compound loading system's initiative passive control's side direction stop device which characterized in that: the device comprises a connecting component, a load sensor (3), a jacking device (5) and a sliding component, wherein the connecting component, the load sensor (3), the jacking device (5) and the sliding component are sequentially connected, and the movement direction of the jacking device (5) is perpendicular to the movement direction of the sliding component.
2. The actively-controlled lateral stop device of a compression shear compound loading system of claim 1, wherein: the connecting assembly comprises a connecting earring (1) and a pin shaft (2), the end part of the test piece (the wallboard) is provided with the earring, the earring of the test piece is coaxially arranged with the connecting earring (1), and the pin shaft (2) is inserted into the connecting earring (1) and the earring.
3. The actively-controlled lateral stop device of a compression shear compound loading system of claim 2, wherein: the device further comprises a display instrument (4), the load sensor (3) is electrically connected with the display instrument (4), the upper portion of the load sensor (3) is a detection end, a threaded hole is formed in the detection end, a threaded rod is arranged at the lower portion of the connecting earring (1), the threaded rod is connected with the detection end of the upper portion of the load sensor (3) through the threaded hole, and the load sensor (3) is arranged on the upper portion of the jacking device (5).
4. A passively-active lateral spacing device for a composite compression-shear loading system according to claim 3, wherein: the device further comprises a limit screw (6) and a connecting section transition base (7), wherein the limit screw (6) penetrates through the upper portion of the connecting section transition base (7), the lower portion of the jacking device (5) and the upper portion of the jacking device (5).
5. The actively-controlled lateral stop device of a compression shear compound loading system of claim 4, wherein: the sliding assembly comprises a sliding block (8) and a sliding rail (9), the connecting section transition base (7) is arranged on the upper portion of the sliding block (8), and the lower portion of the sliding block (8) is in sliding connection with the sliding rail (9).
6. The actively-controlled lateral stop device of a compression shear compound loading system of claim 2, wherein: still include base (10), slide rail base bolt (11), slide rail bolt (12), slider bolt (13) and sensor bolt (14), linkage segment transition base (7) lower part is connected with slider (8) through slider bolt (13), and slide rail (9) are connected with base (10) upper portion through slide rail bolt (12), and base (10) lower part is connected with reaction frame (15) through slide rail base bolt (11), and load sensor (3) are connected with jacking device (5) upper portion through sensor bolt (14).
7. The active and passive control lateral limiting method of the compression-shear composite loading system is characterized by comprising the following steps of: a passively-controlled lateral-limiting device for use with a composite compression-shear loading system according to any one of claims 1-6, comprising the steps of:
step one: fixing the base (10) on a reaction frame (15); the sliding rail (9) is fixed on the base (10) through a fixing; sliding the sliding block (8) into the sliding rail (9) along the X direction;
Step two: connecting the connecting section transition base (7) on the sliding block (8); the jacking device (5), the connecting section transition base (7) and the load sensor (3) are connected together through the limiting screw (6), the limiting screw (6) plays a role in positioning, the limiting screw is not fastened, and therefore displacement which keeps the degree of freedom in the Y direction can be regulated and controlled through the jacking device (5); connecting a threaded rod on the connecting earring (1) in a threaded hole on the load sensor (3); finally, the connecting earring (1) is hinged with the test piece through a pin shaft (2);
step three: the load sensor (3) is connected with the display instrument (4);
Step four: lifting the connecting earring (1) through actively adjusting the lifting device (5), observing a load value of a load sensor (3) displayed on the display instrument (4), and predicting 2% -3% of the maximum load according to an actual test piece to be a pre-load initial value, namely stopping hydraulic loading of the lifting device (5) when the numerical value displayed on the display instrument (4) reaches the pre-load initial value; at this time, the whole lateral limiting device is in a limiting critical state;
Step five: the lateral limiting device limits the vertical displacement of the test piece; meanwhile, the test piece can generate transverse displacement under the action of transverse ballast, and the slide block (8) with the lateral limiting system passively slides along the slide rail (9);
step six: because the lateral limiting device limits the lateral displacement of the test piece, the lateral limiting device can generate pressure, and the partial load can be monitored through the display instrument (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410251389.0A CN118150311A (en) | 2024-03-06 | 2024-03-06 | Active and passive control lateral limiting device and method of pressure shear composite loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410251389.0A CN118150311A (en) | 2024-03-06 | 2024-03-06 | Active and passive control lateral limiting device and method of pressure shear composite loading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118150311A true CN118150311A (en) | 2024-06-07 |
Family
ID=91299419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410251389.0A Pending CN118150311A (en) | 2024-03-06 | 2024-03-06 | Active and passive control lateral limiting device and method of pressure shear composite loading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118150311A (en) |
-
2024
- 2024-03-06 CN CN202410251389.0A patent/CN118150311A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110231037A1 (en) | Hard-landing occurrence determination system and method for aircraft | |
| CN112141843B (en) | Dynamic detection system and method for detecting braking performance of elevator brake | |
| CN110667885B (en) | Reliability test method for airplane flap slat movement mechanism | |
| CN104677667A (en) | Fire resistance test device and method capable of providing axial elastic constraint of component | |
| CN115824550A (en) | Civil aircraft drop-adaptive emergency breaking pin falling shock impact test bed and test method | |
| Bao et al. | Intelligent tribological forecasting model and system for disc brake | |
| CN118150311A (en) | Active and passive control lateral limiting device and method of pressure shear composite loading system | |
| CN204439387U (en) | Fire-resistant test device capable of providing axial elastic constraint of component | |
| CN109506908B (en) | Tail end load loading device for fatigue test of tail section test piece | |
| CN113800005A (en) | Emergency breaking test bed and test method for main landing gear of airplane | |
| US6530272B2 (en) | Flap test system | |
| CN109506909B (en) | Tail landing gear load loading device for fatigue test of tail section test piece | |
| CN111256925A (en) | Large-deflection small-strain structure follow-up normal loading implementation method | |
| CN111442920A (en) | Hydraulic rerailer test system and test method | |
| CN213516588U (en) | Loading device for airplane stabilizer control load test | |
| Lokos et al. | Strain-gage loads calibration testing of the active aeroelastic wing F/A-18 aircraft | |
| CN212621984U (en) | Testing arrangement of welding nail shear resistance bearing capacity under concrete fracture operating mode | |
| CN215622801U (en) | Aircraft landing gear restraint support and load monitoring device | |
| CN206279444U (en) | Dynamometry plate type rubber support base based on fibre strain sensor | |
| CN110057518A (en) | A kind of loading method and device for rear edge of wind turbine blade component | |
| CN114813000A (en) | Load monitoring device and method for buffeting test of aircraft key structure | |
| CN219878972U (en) | Suspension device of steel structure engineering safety belt for construction | |
| CN219161513U (en) | Longitudinal resistance testing machine for high-speed railway fastener assembled steel rail | |
| CN115372134B (en) | Aeroengine main installation joint strength test device and loading method | |
| CN211856136U (en) | Wheel tread deformation testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |