188 results about "Compressive deformation" patented technology

The invention discloses a multi-scale simulation method for a thermal compression deformation behavior of TC4 titanium alloy, and belongs to the field of metal material processing simulation. Comprising the following steps: 1, carrying out thermal compression experiments at different temperatures to obtain a deformed sample; 2, analyzing the grain orientation, orientation difference angle and texture evolution of the sample by using an electron back scattering diffraction technology; 3, constructing a crystal plasticity finite element model, and simulating a polycrystalline deformation process; 4, constructing a molecular dynamics model, and simulating phase change and dislocation evolution in thermal compression and cooling processes; and 5, based on a multi-scale simulation result, hot working parameters are optimized, dynamic recrystallization and a beta-to-alpha phase change path are regulated and controlled, and grain refinement and performance homogenization are achieved. The invention discloses a correlation mechanism of the microstructure and the mechanical property in TC4 titanium alloy thermal compression deformation, and provides a theoretical basis for optimization of a thermal processing technology of a high-performance titanium alloy component in the aerospace field.

The invention provides a copper foil thickness analysis method and device. The copper foil thickness analysis method comprises the steps that tension values of all layer number positions and thickness measurement results of the corresponding layer number positions in the copper foil winding process are obtained; analyzing a deformation mechanism by combining the obtained interlayer relative displacement and torsion angle according to the compression deformation analysis result to obtain stress distribution mode data; compensating thickness measurement data based on the stress distribution mode data to obtain compensated thickness measurement data; setting a normal thickness range and an anomaly judgment threshold based on the compensated thickness measurement data, and determining a sensitivity identification threshold parameter of thickness anomaly detection; judging a thickness anomaly state according to the sensitivity identification threshold parameter of the thickness anomaly detection to obtain a thickness anomaly detection result; and in combination with the thickness anomaly detection result and historical winding process thickness measurement data, thickness anomaly detection combination parameters are determined.

The invention belongs to the technical field of engineering materials, and particularly discloses an anti-impact sheath for a carbon fiber composite cable. The sheath comprises an outer protective layer and an inner protective layer; the inner protective layer has a porous structure; the inner protective layer is made of at least one of polyurethane resin, silicone rubber, polylactic resin, fiber reinforced polyurethane resin and fiber reinforced silicone rubber; the porous structure has at least one pore structure selected from a regular pore structure, a disordered pore structure, a bionic pore structure and a gradient pore structure. The sheath has the advantages of being large in compression deformation, high in energy absorption capacity, good in impact resistance and protection effect, light in weight, high in designability and the like, when the sheath is applied to the carbon fiber composite cable, the transverse impact resistance of the carbon fiber composite cable can be remarkably improved, and the service life of the carbon fiber composite cable is prolonged. And the dead weight of the carbon fiber composite cable is reduced, and the bearing efficiency of the cable is improved.

The utility model relates to the technical field of expansion joints, in particular to a deformed steel-elastic body combined seamless expansion joint structure and a bridge, the expansion joint structure increases the coupling action area and the coupling force of an elastic body and deformed steel through the combined structural design of a deformed plate, the deformed steel, the elastic body and a covering layer, so that the expansion joint structure is more flexible and reliable. The phenomenon that weak connecting surfaces are easy to debond too early is improved, the service life of the structure is prolonged, and the durability of the structure is improved; the deformation direction of the elastic body is controllable, the road surface is prevented from bulging, and the driving safety problems such as bumping are completely eradicated; the covering layer in the expansion joint area can cooperate with the elastic material for tension and compression deformation, meanwhile, it is guaranteed that the rigidity transition from the asphalt concrete layer in the non-expansion area to the covering layer is smooth, and the vicious circle that the bumping phenomenon is caused by the unsmooth road surface, and the local damage of the road surface is more serious due to the impact load under the bumping phenomenon is prevented.

The invention belongs to the technical field of bridge engineering, and particularly relates to an analysis method for intelligently sensing a hanging basket of a corrugated steel web box girder bridge, a terminal and a storage medium, and the method comprises the steps: obtaining deformation data of a plurality of measurement points installed on the hanging basket of the corrugated steel web box girder bridge in an actual asynchronous method construction process; establishing an initial finite element model based on the geometric information of the hanging basket structure, and setting an elastic constraint condition at each support position of the initial finite element model; according to the invention, the static level gauge, the inclinometer and the strain gauge are arranged at the key positions of the hanging basket to construct a multi-source sensing monitoring network, so that the cooperative sensing of the vertical displacement, the inclination attitude and the structural strain is realized, and the comprehensiveness and accuracy of the state sensing in the construction process are effectively improved. Secondly, a vertical spring unit is introduced into the finite element model to serve as elastic constraint, the vertical compression deformation behavior of the corrugated steel web under the load effect is truly simulated, and the physical authenticity of boundary conditions is remarkably improved.

The invention provides a plate tension-compression buckling-restrained clamping device and a working method, relates to the field of tension-compression tests, and aims to solve the problem that data errors are easy to introduce by adopting a buckling-restrained structure during compression of a plate in a tension-compression cycle test. The elastic piece acts on the lower clamping plate through elastic force, so that the working area continuously restrains the parallel section of the sample, buckling instability of the parallel section in the thickness direction during compression is prevented, it is guaranteed that deformation is in-plane deformation all the time, the sample slides relative to the working area during tension and compression circulation, and sliding friction force can be reduced through the antifriction layer at the contact position of the lower clamping plate. The constraint force transmitted by the elastic piece is measured by the force sensor in real time, and the data can reflect the constraint strength and potential friction influence, so that subsequent correction of compression deformation data is facilitated, and errors are reduced.

The invention provides a device and a method for testing the shearing and compression performance of a helicopter engine damping part. The shearing performance testing device comprises a base (1), a fixed support (3), a stress application lead screw (4), a tension sensor (5), a dynamometer (6), a double-fork (7), an arc-shaped pulling plate (8), a mounting support (10), a dial indicator (11) and a magnetic base (12). The compression performance testing device comprises a base (1), a fixed support (3), a stress application lead screw (4), a tension sensor (5), a dynamometer (6), a mounting support (10), a dial indicator (11), a magnetic base (12), a single lug (13) and a square loading frame (14). Measurement of shear and compression deformation displacement of the engine damping member is realized, shear and compression performance of the engine damping member is verified, and the installed damping member is ensured to effectively prevent transmission of vibration waves and weaken harm of inertial impact to an engine. And the situation that the installation of the damping piece with substandard static performance affects the flight safety is avoided. The test cost is low, the operation is simple, the test efficiency is high, and the deformation displacement of the damping member can be visually reflected.

This invention relates to the field of titanium alloy material preparation technology, and particularly to a multi-pass forming process for TC11 titanium alloy, comprising the following steps: Step 1, preparing titanium alloy bars; Step 2, heating the titanium alloy bars to 950℃ at a heating rate of 5℃ / s; Step 3, after reaching the set temperature, holding the titanium alloy bars at that temperature for 300 s to fully eliminate the temperature gradient inside the sample; Step 4, performing three compression deformations on the titanium alloy bars using a press, with a strain rate of 10 s. ‑1 The maximum deformation is 70%; a 10-second isothermal interval is set between each two compression passes; in step five, after deformation, rapid cooling is immediately achieved using water quenching. This invention achieves the technical goal of optimizing the hot forming process of titanium alloys and producing high-performance titanium alloy products.

The invention relates to the technical field of test benches, and discloses a new material filter material on-line test bench, which comprises a base, the top of the base is fixedly connected with an L-shaped frame, the inner wall of the L-shaped frame is slidably connected with a sliding rod, the bottom of the sliding rod is fixedly connected with a gas hood, the top of the base is fixedly connected with a hollow frame, and the hollow frame is fixedly connected with an air cylinder. The top of the base is slidably connected with a sliding frame, the top of the sliding frame is provided with a test box, the inner wall of the hollow frame is fixedly connected with a fixed rod, the inner wall of the hollow frame is rotatably connected with a threaded rod, the circumferential surface of the threaded rod is in threaded connection with a U-shaped plate, and the inner wall of the test box is slidably connected with a permeable plate. According to the invention, an actual use scene can be simulated, stable and controllable pressure extrusion is applied, the compressive deformation resistance and interlayer bonding strength of the filter material are evaluated, the optimal clamping force during installation of the filter material is determined, and pore blockage and filter channel deformation caused by extrusion in actual application are avoided.

The utility model discloses a scraper loader discharge port connecting member, and relates to the technical field of loader connecting pieces, the scraper loader discharge port connecting member comprises a guide hopper, a first fixing mechanism and a second fixing mechanism, the first fixing mechanism and the second fixing mechanism respectively comprise a movable plate and a fixed plate, and the surface of the fixed plate is fixedly connected with symmetrically distributed limiting rods; threaded rods distributed at equal intervals are fixedly connected to the surface of the fixed plate, sliding holes slidably connected with the limiting rods are formed in the front face of the movable plate, and connecting holes distributed at equal intervals are formed in the surface of the movable plate. According to the utility model, the side wall of the discharge port of the scraper loader is inserted between the movable plate and the fixed plate, and then the fixing nut is arranged on the threaded rod and is screwed down, so that the movable plate and the fixed plate are tightened, the non-slip mat is compressed and deformed, and the non-slip capability between the movable plate and the fixed plate is improved; and the movable plate and the fixed plate are fixed on the discharge hole of the scraper loader.

The invention relates to a display module and a display device, and the display module comprises a display panel which is located in a bending region and a non-bending region; the supporting structure is arranged on one side, in the thickness direction, of the display panel, the supporting structure comprises a first supporting layer and a second supporting layer, and the first supporting layer and the second supporting layer are adjacently arranged in the first direction; at least part of the first supporting layer is located in the bending area, and at least part of the second supporting layer is located in the non-bending area. According to the display module, at least part of the first supporting layer with high elastic modulus corresponds to the bending area, so that local reinforced support with high deformation resistance is provided for the bending area which is prone to collapse when the display module is in the unfolded state; and at least part of the second supporting layer with low elastic modulus corresponds to the non-bending area, so that a flexible buffer area easy to compress and deform is provided for the non-bending area needing to absorb material redundancy when the display module is in the bending state.

The utility model discloses a leakproof type sealing preservation box which comprises a glass box body, an outer convex edge is arranged at the top end of the glass box body, a box cover is arranged at the top end of the outer convex edge, sealing buckles are arranged on the two sides of the box cover, a center boss is arranged at the center position of the top end of the box cover, and an opening is formed in the center boss. An exhaust window is arranged at the top end of the center boss, and a top groove is formed in the top end of the box cover. Through the arrangement of the box cover, the baffle, the first sealing strip, the O-shaped groove, the second sealing strip and the thin sheet, effective sealing of the box body is achieved, the O-shaped groove in the first sealing strip facilitates compression deformation of the first sealing strip, the first sealing strip can be better attached to the outwards-protruding edge, the first sealing strip and the second sealing strip are distributed in an L shape, and the sealing effect is good. According to the anti-leakage preservation box disclosed by the utility model, the anti-leakage part is perfectly attached to the edge of the glass box body, and is matched with the two groups of sheets to form multiple blocking, so that the sealing property of the preservation box is effectively improved, and the leakage phenomenon is prevented, and therefore, the preservation box has an anti-leakage function.

Method for connecting a sensor arrangement (20) to a measurement object (2), the method comprising the steps (100) Provide - of a measured object (2), - a sensor arrangement (20) comprising a strain gauge (1) which is at least configured to detect tensile and compressive deformations of a measurement object (2), and an electronic module (19), - a first connecting foil (10a) and a second connecting foil (10b), each containing metallic materials (11, 12) which react exothermically when activated, (200) Placing the first connecting foil (10a) between the strain gauge (1) and the electronic module (19), (300) Activating the metallic materials (11, 12) of the first connecting foil (10a) such that the first connecting foil (10a) heats up in such a way that a metallurgical connection is created between the strain gauge (1) and the electronic module (19), wherein after activating the metallic materials (11, 12) of the first connecting foil (10a) an electronic connection exists between the strain gauge (1) and the electronic module (19), (400) Place the second connecting foil (10b) between the strain gauge (1) and the object being measured (2), and (500) Activating the metallic materials (11, 12) of the second connecting foil (10b) so that the second connecting foil (10b) heats up in such a way that a metallurgical bond is created between the strain gauge (1) and the object being measured (2).

An optical lens, a transmitting module, a probe apparatus, and a terminal device, relating to the technical field of optics and serving to reduce the compressive deformation of lens pieces caused by lens barrels under high-temperature working conditions. The optical lens comprises: a lens barrel, a lens piece, and a spacer ring assembly; the edge of the lens is in local contact with an inner wall surface of the lens barrel; the spacer ring assembly comprises a first spacer ring and a second spacer ring, the first spacer ring and the second spacer ring being respectively in contact with two surfaces of the lens piece in the axial direction; in the radial direction of the lens piece, there is a first distance between the contact position of the first spacer ring and the center-of-gravity position of the lens piece, and there is a second distance between the contact position of the second spacer ring and the center-of-gravity position of the lens piece, the first distance being different from the second distance. On the basis of such structure, a combination of two forces applied by the two spacer rings to the lens piece will generate a certain moment on the lens piece. The moment can be used to reduce or offset the moment generated by a compressive force of the lens barrel on the lens piece under high-temperature working conditions, so as to reduce or eliminate the deformation of the lens piece caused by the compressive force of the lens barrel on the lens piece.

The utility model discloses a soft upholstered furniture splicing corner structure capable of reducing deformation error, which belongs to the field of furniture and comprises a first splicing frame and a second splicing frame, one end of the first splicing frame is in butt joint with one end of the second splicing frame, and the first splicing frame is sequentially wrapped by a first splicing corner inner supporting layer and a first flexible outer layer from inside to outside. The second splicing frame is sequentially wrapped with a second splicing angle inner supporting layer and a second flexible outer layer from inside to outside. The first splicing corner inner supporting layer and the second splicing corner inner supporting layer are soft rubber layers, and the first flexible outer layer and the second flexible outer layer are sponge layers, so that the softness of the furniture can be ensured, and the splicing corner between the first splicing frame and the second splicing frame can be supported through the inner soft rubber layers, and therefore, the compression deformation at the splicing corner can be reduced, and the service life of the furniture can be prolonged. The size of the opening can be reduced; meanwhile, compared with an existing mode of reducing the opening through the technology, the requirement for the technology is simpler, and the production difficulty of furniture can be reduced.

The invention relates to the technical field of fabric testing, in particular to a testing device for high-elasticity blended fabric. The device comprises a tensile strength testing machine, a lifting device is arranged on a workbench of the tensile strength testing machine, two clamp heads are symmetrically arranged on the lifting device, two fastening assemblies are symmetrically arranged in each clamp head, clamping blocks are fixedly connected to the ends of the fastening assemblies, and the two opposite clamping blocks jointly form a clamping face used for clamping the high-elastic fabric; each clamping block is of an elastic composite structure, a plurality of holes are formed in each clamping block, when the two clamping blocks move in the opposite directions and are pressed on the high-elasticity blended fabric, elastic clamping block bodies are pressed to deform, local negative pressure is generated at hole openings of the holes in the elastic clamping blocks under the action of compression deformation, the corresponding portions of the fabric are slightly adsorbed and slightly bulged towards the interiors of the holes, and therefore the fabric is formed. A plurality of micro anchor points are formed, and flexible adsorption contact replaces traditional rigid tooth top meshing.

The utility model relates to the related technical field of door edge covering, in particular to an edge covering structure with a deformation preventing function and a door, and the edge covering structure with the deformation preventing function comprises two attaching plates attached to the two sides of a door plate; the side frame is formed by connecting four side frames end to end and is of a frame-shaped structure, the side frame wraps the four edges of the door plate, the two attaching plates are clamped and fixed, each side frame comprises an inserting beam, clamping grooves allowing the side ends of the attaching plates to be inserted are formed in the two ends, in the thickness direction of the door plate, of each side frame, and the attaching plates can be bonded to the surfaces of the inserting beams after being inserted into the clamping grooves. The four edges of the door plate are wrapped, compared with an existing mode that the four edges of the door plate are directly attached to the side ends of the door plate, the stability is higher, the problem that the side frames fall off can be effectively prevented, meanwhile, the two faces of the door plate are wrapped by the two attaching plates, assembling is convenient, and the stability of the side frames after installation is kept; the compressive strength of the side frame can be effectively improved, and the situation of compressive deformation is prevented.

The invention provides a closing holding device for a vacuum arc-extinguishing chamber and a vacuum circuit breaker, and belongs to the technical field of switch equipment. The switch-on holding device comprises a spring cylinder, a guide block is installed in the spring cylinder, a switch-on holding spring is installed between the guide block and the cylinder bottom in a pressing mode, the spring cylinder comprises a guide inner circumferential face used for guiding the switch-on holding spring, a lining cylinder is fixedly arranged in the spring cylinder, and the lining cylinder is sleeved with the switch-on holding spring. The lining cylinder comprises a guiding outer peripheral surface, wherein the outer diameter of the guiding outer peripheral surface is matched with the inner diameter of the closing retaining spring so as to guide the compression deformation of the closing retaining spring. According to the invention, the guide outer circumferential surface of the lining cylinder is utilized to guide the compression deformation of the closing retaining spring, and the guide inner circumferential surface of the spring cylinder is combined to realize the inner and outer guide functions of the closing retaining spring, so that the stable output of the magnitude and direction of closing retaining force is ensured, and the good centering effect and stable contact of the moving and static contacts are ensured; and the performance stability and the service life prolonging of the vacuum arc-extinguishing chamber are facilitated.

The application discloses a process method for improving the hardness of 5A06 aluminum magnesium alloy, and comprises the following steps: step 1, cutting processing is performed on the 5A06 aluminum alloy rod to form a plurality of cylindrical short samples; step 2, the sample is subjected to deformation treatment: the sample is compressed once, and the deformation amount is 16%-32%; step 3, the sample subjected to the deformation treatment is directly immersed in liquid nitrogen for cryogenic treatment, is placed in air to be warmed to room temperature, and the hardness of the sample is measured. The application solves the problems that it is difficult to improve the hardness of the aluminum magnesium alloy and difficult to prolong the service life at present, the cryogenic treatment time has a significant influence on the structure of the 5A06 aluminum alloy, the number of Al3Mg2 phases in the structure is obviously increased with the prolonging of the cryogenic treatment time, the hardness of the alloy can be further improved by adopting the process of deformation superposition and cryogenic treatment, so that the wear resistance is improved, and the service life of the alloy is prolonged.

The utility model provides a high-strength driving side air conditioner air duct, which relates to the technical field of automobile air conditioner accessories and comprises an air duct body, and a first fixing seat is fixedly connected to the position, close to the left side, of the top of the air duct body. In the utility model, when the air duct body is installed and is in a completely stretched state, the second bolt is rotated to be tightly attached to the left side of the second fixed seat, then the first bolt is rotated to be tightly attached to the right side, and at the moment, the second anti-skid layer on the surface of the bolt and the first anti-skid layer on the surface of the fixed seat can clamp the rubber ring to be compressed and deformed; in addition, the reinforcing rod is made of steel, the strength and the rigidity are high, the deformation of the air pipe body can be limited, and the capability of resisting external force and vibration can be enhanced. When an automobile runs on a bumpy road section or accelerates or brakes suddenly, the air pipe is not prone to deformation, and normal air conveying and the using effect of the air conditioner are guaranteed.

The invention discloses a wear-vibration coupling modeling method and device for a roller linear guide rail pair system, and the method comprises the steps: dividing the movement process of a roller into an LC stage and two transition stages according to the contact load, deformation state and wear mechanism difference of the roller in a sliding block track; respectively establishing a sliding wear model and an impact-sliding composite wear model, and constructing a non-uniform wear depth expression taking space coordinates as input; the multi-state contact behavior is described by introducing roller compression deformation and contact angle change, and the actual contact area under different contact states is determined based on the Hertz contact theory; in combination with roller operational analysis and a coordinate transformation relation, mapping of the abrasion depth among a roller coordinate system, a sliding block coordinate system and a guide rail coordinate system is achieved, and the abrasion effect of each roller is accumulated through a time discretization method; a five-degree-of-freedom nonlinear dynamic model is introduced, coupling analysis of pretightening force degradation and vibration response is achieved, and dynamic performance changes of the guide rail system in long-term operation are predicted.

This application belongs to the field of wearable robot technology, specifically providing a mechanical load-bearing exoskeleton system based on ground reaction force self-triggering. The exoskeleton system includes an upper body mechanism, a thigh mechanism, a knee joint mechanism, a lower leg mechanism, and a foot mechanism. The knee joint mechanism includes a knee joint support, a locking component, and a transmission assembly. When the foot mechanism touches the ground and the sole of the foot is compressed and deformed by the ground reaction force, the thigh mechanism slides downward relative to the knee joint support. The transmission assembly drives the locking component to slide towards the thigh mechanism and connect with it, thereby locking the knee joint mechanism. The compression deformation of the sole of the foot caused by the ground reaction force is used as a trigger signal to automatically trigger the locking of the knee joint mechanism. The knee joint mechanism can lock at any reasonable angle, so that when the wearer is going up or down slopes, climbing stairs, or bending their knees for cover, the exoskeleton system can still effectively assist the human body in bearing the load by locking the knee joint mechanism.

The invention relates to the technical field of shock absorption supporting of aircrafts, and discloses a low-frequency shock absorption supporting structure and an aircraft, and the supporting structure is a metamaterial which is formed by arranging a plurality of cell element structures with the same structure in a planar array mode to form one or more layers of coupled and stacked metamaterials; the cell structure is a cylindrical structure enclosed by four wall plates, and a cavity is formed in the cell structure; each wall plate comprises a first plate section and second plate sections located on the upper side and the lower side of the first plate section. The first plate section is rectangular, and the second plate section is isosceles trapezoid; the first plate section is provided with two first edges which are opposite up and down; the second plate section is provided with a second edge parallel to the first edge, and the second edge is shorter than the first edge; the first plate sections of the adjacent cell structures are attached to each other, and the openings of the upper and lower cell structures are aligned during stacking. Through relative compression deformation motion between the top substrate and the cell element structure, vibration energy is absorbed, and the influence of vibration on precise instruments in the aircraft is reduced.

The present disclosure relates to a tactile presentation device that includes a tactile presentation knob placed on an operation screen and for presenting a tactile sense to a user via the tactile presentation knob. The tactile presentation knob includes a conductive elastic portion that includes a surface layer facing the operation screen and an inner layer located on the side opposite to the operation screen, and an operation part that fixes the conductive elastic portion. The surface layer is set to be subjected to greater shear deformation than the inner layer by an operation of the tactile presentation knob, to generate vibrations by a change in the frictional force, and to be subjected to greater compressive deformation than the inner layer by a press of the tactile presentation knob. The inner layer is set to have higher vibration transmissibility than the surface layer.

A treatment tool includes: a pair of grippers configured to grip living tissue, at least one of the pair of grippers being configured in an openable and closable manner; a transmission portion connected to the at least one of the pair of grippers, the transmission portion being configured to move forward and backward along a first direction to open and close the pair of grippers; an operating portion configured to receive user operation for gripping the living tissue; an elastic body configured to transmit, to the transmission portion, an operating force applied to the operating portion by the user operation while being compressively deformed in accordance with the operating force; and an adjustment mechanism configured to adjust an amount of compressive deformation of the elastic body when the user operation is performed on the operating portion, to thereby adjust a gripping force of the pair of grippers.

This invention belongs to the technical field of concrete pile end plates, specifically relating to a mechanical connection structure for end plates and a method for producing end plate connectors. The mechanical connection structure includes a first end plate and a second end plate respectively disposed at the ends of two concrete piles. Both the first and second end plates have tension holes and insertion holes. Internal threads are provided in the tension holes. An end plate connector is installed on the first end plate. One end of the connector has a stud that mates with the tension hole, and the other end has a compressible barb. When the two concrete piles are joined, the barb is compressed and inserted into the insertion hole, automatically opening after passing through the hole, thus achieving a mechanical locking connection between the two end plates. A plug is provided in the insertion hole to prevent blockage during concrete pouring and to provide space for the barb to extend. This invention enables rapid connection of concrete piles, improving pile splicing efficiency and connection stability. The end plate connector can be made from existing failed tension bolts, greatly saving production costs.

This invention relates to an integrated variable camber wing based on a piezoelectric-driven torsional cubic superstructure, comprising a wing skeleton and a skin. The wing skeleton includes multiple torsional cubic superstructures arrayed along the wing chord direction. Each torsional cubic superstructure is a cube formed by an array of multiple unit-cell torsional superstructures. Adjacent unit-cell torsional superstructures in the wing length and thickness directions share a straight rod, while adjacent unit-cell torsional superstructures in the wing width direction share four Z-shaped piezoelectric rods. Each unit-cell torsional superstructure is a cube formed by an array of four cell units, with adjacent cell units sharing a straight rod. Each cell unit includes Z-shaped piezoelectric rods and straight rods. Two Z-shaped piezoelectric rods are connected to the two ends of two straight rods. Each Z-shaped piezoelectric rod at both ends of the torsional cubic superstructure is connected to the skin. When all the Z-shaped piezoelectric rods of the unit-cell torsional superstructure undergo compressive deformation in the height direction, the unit-cell torsional superstructure undergoes torsional deformation, thus causing the torsional cubic superstructure to undergo torsional deformation. By converting the compressive deformation of the cellular unit into the torsional deformation of the compressive-torsional cubic superstructure, the wing camber is changed, and the drive components are eliminated, thus realizing the lightweight design of the morphing wing.

The utility model relates to a silica gel foot pad compression deformation test device which comprises a rectangular bottom plate, a plurality of arrayed positioning concave holes are formed in the bottom plate, two transverse guide grooves are formed in the upper end faces of the left side and the right side of the bottom plate respectively, and the guide grooves are located between the positioning concave holes. U-shaped handle storage grooves are formed in the lower end faces of the left side and the right side of the bottom plate correspondingly, the handle storage grooves are located under the guide grooves, and U-shaped handles are inserted into the handle storage grooves; a rectangular pressing plate is arranged over the bottom plate, transverse insertion grooves right opposite to the guide grooves are formed in the two sides of the pressing plate respectively, a rectangular inlet is formed in the end, close to the middle of the pressing plate, of each transverse insertion groove, and compression grooves connected with the inlets are formed in the front side wall and the rear side wall of the upper portion of each transverse insertion groove respectively. According to the device, the compression amount of the silica gel foot pad is conveniently controlled, meanwhile, the plate for compressing the silica gel foot pad is convenient to mount and connect, and the compression deformation test of the silica gel foot pad is facilitated.

The invention relates to a probe cleaning sheet with elastic buffering, which is mainly used for cleaning foreign matters on the surface of a probe, and comprises a subbase layer; the middle layer is stacked on the top surface of the subbase layer, and the outer surface of the middle layer is subjected to surface processing treatment; the grinding layer is stacked on the top face of the middle layer, the grinding layer is formed by mixing a second material piece and a plurality of first grinding particles, the surface of the middle layer is tightly connected with the grinding layer after surface machining treatment, and the ductility of the second material piece in the grinding layer is larger than that of the first material piece in the middle layer; the release layer is movably attached to and torn from the top surface of the grinding layer; under the condition that the grinding layer has high elastic deformation and the middle layer has the compression characteristic, when the probe is inserted to apply force, the grinding layer can be elastically stretched downwards according to the characteristic of the second material piece, and a plurality of first grinding particles are in contact with foreign matters on the surface of the probe, so that the foreign matters can be separated from the surface of the probe; therefore, the grinding layer is driven to really coat the probe, so that the foreign matters on the probe can be completely removed.

The application discloses a large-span prestressed steel structure energy dissipation and vibration reduction self-resetting cable device, which comprises a baffle arranged on the left and right sides, a cable penetrating through the baffles, a cushion block and an anchor for anchoring the cable, a steel pull rod penetrating through the left and right baffles in sequence, a cushion plate welded at the two ends of the steel pull rod, a steel strand penetrating through the center of the steel pull rod, a second anchor for anchoring the steel strand, a spiral spring nested outside the steel pull rod and welded at the inner sides of the left and right baffles at the two ends, respectively, an upper dislocation plate welded at the inner side of the left baffle, a lower dislocation plate welded at the inner side of the right baffle, an energy dissipation device penetrating through upper and lower strip-shaped bolt holes in sequence, wherein the energy dissipation device comprises a screw rod, upper and lower nuts and upper and lower friction gaskets, and further comprises a friction energy dissipation block embedded between the upper and lower dislocation plates and a stopper for preventing the friction energy dissipation block from falling off; the device can realize energy dissipation and vibration reduction through the tensile and compressive deformation of the spiral spring and the relative sliding of the upper and lower dislocation plates, and can realize the self-resetting function through the steel strand in the steel pull rod and the spiral spring.