455 results about "Shear force" patented technology

The invention relates to the technical field of pressure monitoring, and discloses a method and system for motion state analysis according to plantar pressure, and the method comprises the steps: receiving multi-modal biomechanical data related to a landing event; extracting a corresponding motion feature vector from the multi-modal biomechanical data; and inputting the motion feature vector into a motion state analysis model for identification to obtain a corresponding damage risk index, and outputting the corresponding damage risk index. By receiving pressure distribution data detected by the plantar pressure sensing array, shear force data detected by the shear force measuring and calculating module and a kinematics data sequence detected by the inertial measurement unit, biomechanical information in the movement process can be comprehensively captured from multiple dimensions; compared with a single data acquisition mode, the fusion of the multi-modal data can reflect the real state of the human body in motion more accurately, and a richer and more accurate data basis is provided for subsequent motion state analysis.

The embodiment of the utility model provides a roadbed slope reinforcing device which comprises a supporting frame used for providing support and provided with a plurality of mounting connectors, reinforcing ribs are arranged in the supporting frame to improve the lateral pressure resistance, inclined wing faces are arranged on the two sides of the supporting frame, and embedded locking pieces are further arranged to ensure stable structural connection; the anchor rod is connected with the supporting frame, goes deep into soil and is used for anchoring the whole device in a roadbed slope; the reinforcing panel covers the outer part of the supporting frame and aims to form a continuous plane; the shear keys are installed between the supporting frame and the reinforcing panel, and shear force is transmitted through a meshing structure; wherein the embedded locking piece comprises a telescopic locking pin which is used for adjusting the locking force; a spiral blade is arranged on the anchor rod; and an expansion screw is arranged at the tail end of the anchor rod. Through the scheme of the embodiment of the invention, the soil lateral pressure resistance of the device can be improved.

The invention discloses a prefabricated heat preservation groove type plate floor slab system of an assembly type steel structure trestle, and relates to the technical field of groove type prefabricated heat preservation floor slabs, the prefabricated heat preservation groove type plate floor slab system comprises an anti-skid face plate and a heat preservation bearing mechanism, the heat preservation bearing mechanism is arranged at the bottom of the anti-skid face plate, the heat preservation bearing mechanism comprises a plurality of sealing plates, and the sealing plates are arranged in the anti-skid face plate. The multiple sealing plates are arranged and located at the bottom of the anti-skid panel, multiple second supporting blocks are arranged at the bottoms of the sealing plates, groove-shaped plates are arranged on the outer sides of the multiple second supporting blocks, structural blocks are integrally formed through pouring and extruding, reinforcing strips are arranged on the inner walls of the structural blocks, and the structural blocks and annular hoops form a two-way constraint combined framework which can bear bending moment and shearing force; therefore, the bending resistance, the shearing resistance, the torsional rigidity and the overall bearing capacity of the plate body are improved on the premise that heat preservation is not affected on the whole, the engineering problems are avoided, and normal construction work and construction time are maintained.

A retention system is for a wear part for a bucket for an earth moving machine. The retention system has in operational use: i) a bucket body having a trench; ii) a force multiplier having a shape substantially corresponding to a shape of the trench; iii) a wear part mounted to an edge of the bucket body, and iv) a plurality of bolts. The wear part and the force multiplier is provided with at least one protrusion and another one of the wear part and the force multiplier is provided with at least one matching recess such that relative movement between the wear part and the force multiplier in a lateral direction parallel to the first mutual interface is prevented, in operational use, for reducing shear forces acting on the bolts.

The invention relates to the technical field of roller body welding equipment, and discloses roller body welding equipment and a technology, the roller body welding equipment comprises a welding table, a bearing and transferring assembly is arranged on the welding table, the bearing and transferring assembly comprises supporting plates symmetrically and fixedly arranged at the two ends of the welding table, and a plurality of first air cylinders are fixedly arranged at the lower ends of the supporting plates; the surface of a piston rod of the first air cylinder is sleeved with the same bottom plate, a two-way lead screw is rotationally arranged in the bottom plate, sliding blocks are symmetrically connected to the surface of the two-way lead screw in a threaded mode, a first bearing plate and a second bearing plate are arranged between the two symmetrical sliding blocks, and a sliding groove matched with the second bearing plate is formed in one side of the first bearing plate. By means of the cooperation of the first bearing plate and the second bearing plate which can be connected in a sliding and sleeving mode, a roller body can be stably borne and accurately transferred to the designated position of the welding table, and the roller body slowly rolls to the bearing platform along the inclined face by means of the self weight during discharging; and the non-uniform additional bending moment and shearing force caused by the dead weight of the roller body in the traditional three-point hoisting to a welding seam area are effectively avoided.

The present invention provides a stirring blade or the like that can efficiently apply shear force to fluids with a Reynolds number of 300 or higher. [Solution] The stirring blade 3 is a stirring blade 3 that stirs a fluid F by rotating around a rotating shaft 30, and generates a flow of fluid F with a Reynolds number of 300 or more, in which, in a region of 5% or more of the flow, the ratio of the deformation velocity tensor to the fluid velocity gradient tensor, which is the sum of the deformation velocity tensor and the rotation velocity tensor, is 0.8 or more. It comprises a plurality of plate-shaped members 311 to 314 that are rotatable at different positions in the radial direction perpendicular to the axial direction in which the rotating shaft 30 extends. It comprises two to five plate-shaped members 311 to 314 that are rotatable at two to five different radial positions.

The invention discloses a cement thickness degree detection device, and belongs to the technical field of cement thickness degree detection, the cement thickness degree detection device comprises a cabinet body, a fixed screen seat is arranged on the top side in the cabinet body, and the bottom side in the fixed screen seat is connected with a sealing gasket. A detection worker manually operates a circular plate to drive two arc-shaped sliding blocks, a circular sleeve and an elastic conical cover to move downwards, in the up-down reciprocating motion process of the elastic conical cover, vibration is generated on the surface of the bottom of the elastic conical cover, adhered cement fine particles are effectively shaken off, sample residues are remarkably reduced, and therefore the accuracy of a detection result is guaranteed; in the downward moving process of a circular sleeve, a connecting shaft, a mounting sleeve and a plurality of spoilers are driven to synchronously and slowly rotate under the acting force of a guide rod and an arc-shaped groove, and ordered mild airflow shearing force is formed in the top area of the test screen through the slow rotating motion of the spoilers so as to assist and promote the fine powder penetration phenomenon of the test screen; and the screen analysis efficiency and uniformity of the device are improved.

The application relates to a compression-shear composite loading system based on a pulley system multi-point mean loading, and relates to a compression-shear composite loading system. In order to solve the problem that the traditional compression-shear composite loading is prone to uneven shear flow for a large-size composite stiffened wall plate structure, the application applies uniform compression loads to the side end surface loading end of a test piece through compression actuating cylinders and a flat pressing plate; two shear actuating cylinders output leftward shear loads along the upper end surface of the test piece; and the other two shear actuating cylinders output rightward shear loads along the lower end surface of the test piece; the loads are converted in direction through a pulley assembly and finally act on the shear plates on the upper and lower sides of the test piece. The application realizes the test under different compression-shear ratios by simultaneously adjusting the sizes of the compression and shear actuating cylinder forces, and optimizes the problem of uneven shear loading through the multi-point coordinated loading system, so that the shear of the measuring point is uniform, and the strength test of the large-size stiffened wall plate structure can be better satisfied.

The present invention provides a swelling machine that can prevent a decrease in shear force in the rotating blade and reduce clogging of the discharge hole. [Solution] An example of a swelling machine according to the present disclosure comprises a cylindrical casing 1 having a supply port 9 for a material to be processed near its base end; a plurality of shearing blades 7 installed along the inner wall of the casing 1 and extending in the longitudinal direction of the casing 1; a screw 2 rotatably inserted into the casing 1 and capable of switching between forward and reverse rotation, which, when rotated forward, transports the material to be processed supplied from the supply port into the casing 1 toward the tip of the casing 1; a top cover 2 attached to the tip of the casing 1 and having a plurality of discharge holes 3a for discharging the material to be processed; and a rotating blade 4 attached to the tip of the screw 2 so as to be movable in the axial direction of the screw 2 and to rotate together with the screw 2, which rotates along the inner surface of the top cover 2 and cuts the material to be processed that is pushed out from the discharge holes 3a by the forward rotation of the screw 2.

A downhole tool assembly includes a first downhole tool with internal pressure and a second downhole tool, joined by a releasable connection designed to release under shear force from unaligned forces between the tools. The connection has relatively high shear strength when locked and relatively low shear strength when unlocked. A shiftable pin locks the connection in a first position and unlocks it in a second position. Internal pressure is communicated to a first end of the piston directly and to an activation circuit. The activation circuit communicates internal pressure to a second end of the piston before an activation and, after internal pressure reaches a release pressure and breaks a burst disc, communicates wellbore pressure to the second end of the piston to create a pressure differential to retract the pin.

This invention relates to the field of injection molding technology, specifically disclosing a stretch-reinforced mixing element, including at least one stretching component and at least one shearing component. It can function as a single screw in an injection molding machine, with the material conveying direction set from the stretching component to the shearing component. Various plastic masterbatches are fed into the injection molding machine's feed inlet, forming a molten flow under high temperature. The flow is then diverted by the stretching component, which stretches the flow before it enters the shearing component. The shearing component shears and disperses the flow, ensuring thorough mixing. This combination of dispersion, stretching, and shearing improves the mixing effect and prevents degradation of shear-sensitive material molecular chains due to the lack of significant shear force, thus avoiding any impact on the material's properties during the mixing process.

To provide a detection device that can more accurately detect shear force. [Solution] First, based on the change in capacitance between the lower electrode and the upper electrode, a pressing force detection value reflecting the pressing force applied in the z-axis direction and a shear force detection value reflecting the shear force applied in at least one of the x-axis and y-axis directions are calculated (steps S1-S2). Next, a pressing force conversion value obtained by converting the pressing force detection value to a predetermined unit and a shear force conversion value obtained by converting the shear force detection value to a predetermined unit are calculated (steps S3-S4). At this time, the shear force conversion value is converted according to the pressing force detection value or the pressing force conversion value. This makes it possible to output the shear force detection value more accurately.

The invention relates to the technical field of material testing devices, and discloses a fastener shearing force testing device which comprises an upper punch fixedly connected with an upper chuck and a base fixedly connected with a lower chuck. The upper punch is connected with the base in a sliding manner; the base is of a hollow structure; a fastener is mounted on the side wall of the base, and the upper punch is used for shearing the fastener; the upper punch is provided with a quadrangular prism part, the base is provided with a quadrangular prism hole, and the quadrangular prism part is in sliding connection with the quadrangular prism hole; a hollow quadrangular prism is arranged on the base, mounting holes are formed in the four side walls of the hollow quadrangular prism, and the mounting holes are used for mounting the fasteners; the quadrangular prism part of the upper punch is provided with a chamfering part, and the chamfering part is used for guiding the upper punch and the base; according to the invention, through the quadrangular prism structure, the mounting hole is convenient to process, and the difficulty of the mounting hole of the base is reduced.

The application provides a shear force identification method, system, storage medium and electronic device for a biaxial tensile test. The method comprises the following steps: pasting a center mark point at the center of a test sample, and pasting a plurality of auxiliary mark points corresponding to the direction of a tensile arm at a strain collection area at the center of the test sample; during the biaxial tensile test, associating the change of each mark point with the shear force in the loading process; analyzing the reliability of the test result by tracking the offset of each mark point in the test process; if the offset exceeds a preset value, adjusting the tensile test parameters to reduce the shear force to below the preset value. The application discloses a shear force identification method for a biaxial tensile test, overcomes the technical problem that the shear force in the biaxial tensile test process cannot be identified, can accurately and reliably identify the change process and loading state of the material in the test process, meets the application requirements of engineering practice, and is very suitable for the test occasions of biaxial tensile test of metal sheets.

The invention discloses a multi-stage film evaporator for removing low-boiling-point substances in polyether, and relates to the technical field of evaporators, the multi-stage film evaporator comprises an evaporator body, a feed port, a discharge port and a differential mechanism, the feed port is fixedly connected to the upper right end of the evaporator body, the discharge port is fixedly connected to the upper portion of the front end of the evaporator body, and the differential mechanism is fixedly connected to the lower portion of the front end of the evaporator body. The top of the evaporator body is fixedly connected with a differential mechanism, the differential mechanism is arranged, through differential motion among a vibration mechanism, two sets of second adjusting mechanisms and a scraper, strong shear force is generated in the early stage, polyether molecular chain winding is rapidly broken, escaping of low-boiling-point substances is accelerated, and product degradation caused by excessive shear in the later stage is avoided; and a uniform film is maintained to promote deep devolatilization, so that the optimal balance of efficiency and quality is realized, and the technical limitation of traditional fixed rotating speed is broken through.

The invention discloses an inner flange single-pipe tower local anti-bending and anti-shearing rigidity reinforcing device and method.The reinforcing device comprises an upper circular channel steel, a lower circular channel steel, structural ribs, an inner flange reinforcing rib connecting structure and a fixed prestress spring structure; the upper circular channel steel and the lower circular channel steel are connected through structural ribs; fixed prestressed spring structures are arranged in grooves of the upper circular channel steel and the lower circular channel steel; inner flange reinforcing rib connecting structures are arranged at the bottom of the upper circular channel steel and the top of the lower circular channel steel; the upper circular steel channel and the lower circular steel channel are each formed by splicing two C-shaped steel channels, and the two C-shaped steel channels are fixed through circumferential gap filling rubber. By means of the design, on the basis that the external structure of the inner flange single-pipe tower is not changed, the bending rigidity of the local dangerous section is improved, the shearing force of the dangerous section is reduced, and then the technical effect of enhancing the strength of the flange plates of the two-section single-pipe tower is achieved.

The invention discloses a rotating steel bar damper of a four-connecting-rod structure. The rotating steel bar damper comprises an outer lug plate, an inner lug plate, an energy dissipation steel bar, a pin shaft and a sleeve. According to the rotating steel bar damper of the four-connecting-rod structure, the damper can deform in any direction in a plane, each pin shaft and the corresponding energy dissipation steel bar surrounding one circle of the pin shaft form a single rotating unit, under the earthquake effect, when the outer lug plate moves in a certain direction, the outer lug plate and the inner lug plate rotate relatively, and therefore the rotating steel bar damper can deform in any direction. The shearing force between the outer lug plate and the inner lug plate is borne by the pin shaft, the bending moment generated by relative rotation of the outer lug plate and the inner lug plate is borne by the energy dissipation steel bar, bending-shearing separation is achieved through the structure, overall plastic deformation of the damper is concentrated on the energy dissipation section of the energy dissipation steel bar, and earthquake energy is dissipated through shearing plastic deformation of the energy dissipation steel bar. And according to the damper, translation deformation is converted into rotation deformation through a four-connecting-rod structure, and the deformation capacity of the metal shearing type damper is improved.

The utility model discloses an injection molding machine feedway belongs to injection molding machine feed field, including injection molding machine body, the feed of injection molding machine body is connected with the feed port having, the outer wall fixed connection of injection molding machine body has telescopic link, the movable end fixed connection of telescopic link has box, the outer wall of injection molding machine body is located the fixed connection of first spring of telescopic link's outer ring, the utility model discloses the setting of motor, stirring rod, first gear, telescopic link, first spring, box, extruding ball and connecting ball, and stirring rod drives extruding ball to rotate to the shear force that produces when with force ball contact can make the cooperation of box with telescopic link and first spring realizes the vibration, promotes the raw material and the batching in the box, can improve the mixing effect between each other, and then this kind of stirring mode will make the mixing between raw material and batching more uniform, makes raw material and batching carry out effective mixing after, thereby avoids the influence quality of subsequent injection molding.

The embodiment of the invention provides a detection device and a detection method for bolt shearing force. The device comprises a strain sensing assembly, the strain sensing assembly is used for being arranged on the head end face of a to-be-detected bolt, the strain sensing assembly comprises a plurality of strain detection units located at different positions of the head end face, and the strain detection units are used for detecting strain information of the corresponding positions; the multiple pieces of strain information are used for determining shearing force parameters of the bolt and the stud, and the shearing force parameters comprise at least one of a shearing force angle and a shearing force value. The detection method comprises the following steps: acquiring strain information detected by a plurality of strain detection units; according to the multiple pieces of strain information, shear force parameters of the bolt and the stud are determined, and the shear force parameters comprise at least one of the shear force angle and the shear force value. According to the invention, the error of bolt shearing force detection can be reduced, and the shearing force detection accuracy is improved.

The utility model discloses a kind of anti-loosening structures of ship flange connection, including flange, first embracing piece, second embracing piece, extension pressing plate, locking mechanism and power-assisted mechanism;The locking mechanism is adapted to each other by first fitting part and second fitting part, and the close fixing of flange is realized by bolt and positioning hole, the power-assisted mechanism includes rotating part, support part, first operating lever and second operating lever, provide convenient installation and disassembly function;The utility model simple structure, reasonable in design, by the cooperation of first embracing piece and second embracing piece, effectively reduce the shear force of flange bolt, reduce the transverse displacement caused by water flow or ship body sway, ensure that flange connection is more stable and reliable, in addition, by the setting of power-assisted mechanism, installation and disassembly operation are more relaxed, significantly improve work efficiency, and prolong the service life of equipment.

The invention provides a three-dimensional slope stability analysis method based on rapid determination of an initial value of a sliding direction angle, and the method comprises the steps: projecting a plane to a three-dimensional slope model to generate a grid, extracting a column set in the three-dimensional slope model, calculating the volume, gravity center position, bottom surface area and bottom surface center normal vector of each column, and calculating the initial value of the sliding direction angle; establishing a shearing force unit direction vector on each strip column; under the assumption of a Sweden slice method, a resultant force of normal contributions of all strip columns and an external load in a horizontal plane is calculated, and an initial value alpha o of a sliding direction angle is obtained through analysis; then, by taking a safety coefficient, a proportionality coefficient and a sliding direction angle alpha as variables to be solved, constructing four normalized residual equations of an x-axis torque balance residual, a y-axis torque balance residual, an overall force balance residual along the sliding direction and a horizontal resultant force residual perpendicular to the sliding direction, forming a limited nonlinear least square problem and carrying out iterative solution; in the solving process, the sliding direction angle alpha takes the obtained initial value alpha o of the sliding direction angle as a starting point.

The present application relates to the technical field of additive manufacturing, and particularly relates to a self-compensation printing head and method, an extrusion direct writing device and a working method. The printing head comprises a shell, a barrel, a screw and a self-compensation assembly; the lower part of the shell has a cavity, the barrel is rotatably installed in the cavity, and the screw is installed in the barrel for extruding material; the self-compensation assembly comprises an outer magnetic pole, an inner magnetic pole and a potentiometer, the outer magnetic pole is arranged on the inner wall of the cavity of the shell, the inner magnetic pole is arranged on the outer wall of the barrel and is arranged in the same polarity opposite to the outer magnetic pole, and the potentiometer is also installed on the barrel; the magnetic force of the outer magnetic pole and the inner magnetic pole makes the barrel at an initial angle, and when the material shear force increases, the magnetic force is overcome to drive the barrel and the potentiometer to rotate. According to the present application, the screw rotating speed can be automatically adjusted in real time according to the change of the material shear force, the stable control of the extrusion amount of different materials is realized, and the precision, quality and efficiency of multi-material direct writing forming are improved.

This invention provides wafer thinning equipment and a thinning method. The wafer thinning method includes: determining the amount of grinding water used for thinning based on the passivation degree of the grinding wheel and / or the shear force in the through-silicon via (TSV) region, to reduce thermal damage in the TSV region and reduce the overall usage of grinding water for thinning; wherein the passivation degree is characterized by the rate of change of the total grinding force of the grinding wheel, and the shear force in the TSV region is characterized by the rate of change of the grinding force in the horizontal direction of the grinding wheel; the grinding water includes two independent streams for cooling the wafer and for cooling the grinding wheel. The wafer thinning equipment and method provided by this invention can reduce thermal damage in the TSV region, reduce surface damage to the thinned wafer, improve the surface quality of the thinned wafer, increase wafer yield, reduce the overall usage of grinding water for thinning, and reduce equipment operating costs.

The invention relates to the technical field of well cementation, in particular to an integral type air-tight seal grading cementing device and method.The integral type air-tight seal grading cementing device comprises an upper connector, a center pipe, an outer cylinder, an outer seal cylinder, an upper plug seat, a lower plug seat and a baffle ring, the outer cylinder is fixedly installed on the outer side of the lower end of the upper connector, and the center pipe is fixedly installed on the inner side of the middle of the outer cylinder through a first shear pin; an outer sealing cylinder is fixedly mounted outside the lower part of the outer cylinder; the method comprises the following steps that (1) a well cementation operation pipe string is connected to be located above a first-stage well cementation tool and located below a second-stage well cementation tool; the device is reasonable and compact in structure and ingenious in conception, by arranging the upper sealing piece and the lower sealing piece, a grading hooping hole closing mode is changed into an inclined face pressing sealing mode, and the sealing pieces are prevented from being damaged by shearing force; the supporting disc spring and the retaining lock ring are arranged to apply continuous acting force to the upper sealing piece and the lower sealing piece, so that the tool can guarantee good sealing performance under long-term high-temperature and high-pressure conditions, and the tool has the advantages of being stable, reliable and good in sealing effect.

A rigidity testing apparatus may be used to test the rigidity of a multi-unit package. The apparatus may, while applying a compression force along a first direction between opposing sides of the multi-unit package, apply a shear force to the multi-unit package in a second direction generally transverse to the first direction such that rigidity may be determined based at least in part on the amount of displacement of the multi-unite package along the second direction relative to the amount of force used to generate the displacement.

The invention relates to a writing, makeup and / or painting system (10) comprising a preparation with viscous and / or thixotropic properties and an application device (1) for the preparation, wherein the application device (1) comprises a reservoir (2) for storing the preparation, an application element (3) for applying the preparation to a substrate, a conveying element (4) connecting the application element (3) and the reservoir (2), a pump and shear element (5) arranged at least partially in a cavity of the conveying element (4), which is at least partially reversibly movable into the reservoir (2) in the longitudinal direction (L) of the application device (1), and a conveying gap (6) formed between an inner surface (12) of the conveying element (4) and an outer surface (11) of the pump and shear element (5) for conveying the preparation from the reservoir (2) to the application element (3).wherein the pump and shear element (5) is configured to exert a shear force on the preparation in the conveying gap (6) by moving the pump and shear element (5) in the longitudinal direction (L) of the application device (1) at a temperature of 25 °C, with a shear rate in the range of 10 / s to 10000 / s.

The utility model relates to the technical field of honeycomb structure paperboards, and discloses a high-strength honeycomb structure paperboard which comprises two pieces of surface paper and further comprises a honeycomb paper core bonded between the two pieces of surface paper, a flame-retardant layer is arranged in the surface paper, the flame-retardant layer comprises a first flame-retardant material layer and a second flame-retardant material layer, and the first flame-retardant material layer and the second flame-retardant material layer are arranged in the honeycomb paper core. A waterproof layer is arranged in the surface paper, the waterproof layer comprises a first waterproof material layer and a second waterproof material layer, and a support plate is arranged between the two pieces of surface paper by a circle. The paper tube is arranged on the periphery between the two pieces of surface paper, the paper tube is of a corrugated design, the corrugated structure is elastically folded when stressed and is similar to accordion compression, shear force is converted into deformation energy, impact energy is absorbed, the shear resistance is improved, the impact resistance between the two pieces of surface paper can be improved through cooperation of the supporting plate and the inclined plate, and the service life of the paper tube is prolonged. And by matching with the reinforcing paper board, the support plate can form an I shape, the deformation of the surface layer is inhibited, and the flexural modulus of the bend is improved.

The application relates to a design method of a seismic mitigation support based on a pier damping rate, comprising the following steps: determining a basic seismic system of a bridge; obtaining the internal force response of a pier bottom when the seismic mitigation support is arranged based on the pier damping rate, so as to obtain a second shear force based on a shear damping rate and a second bending moment based on a bending moment damping rate; establishing a bridge seismic stress and a calculation model when the seismic mitigation support is arranged, and obtaining the internal force response of the pier bottom when the seismic mitigation support is arranged based on a dynamics equation, so as to obtain a third shear force and a third bending moment based on the parameters of the seismic mitigation support; and determining the parameters of the seismic mitigation support based on the principle that the second shear force is equal to the third shear force or the second bending moment is equal to the third bending moment. The application obtains the internal force response of the pier bottom when the seismic mitigation support is arranged based on the pier damping rate and the dynamics equation respectively, and constructs a relational expression between the pier damping rate and the parameters of the seismic mitigation support based on the principle that the internal force responses are equal, so that the parameters of the seismic mitigation support can be determined quickly and accurately.

A modular assembly (20) is provided, comprising a modular frame (28) to be installed at least partially below ground level and at least two panels (34) attached to the modular frame (28), wherein the at least two panels (34) are made of a material that resists lateral, vertical, and shear forces generated by the surrounding materials below ground level. The modular frame (28) and the at least two panels (34) are joined as a unit prior to installation.

This invention discloses a shear force distribution demonstration device and measurement method, belonging to the field of structural engineering teaching technology. The device includes a base, a support mechanism, a loading mechanism, a demonstration mechanism, and a measurement mechanism. The support mechanism is a frame structure with sliding rails; the loading mechanism has replaceable supports with switchable constraints; the demonstration mechanism uses replaceable vertical columns with four-jaw chuck sleeves; and the measurement mechanism includes a strain measurement module, an S-shaped tension sensor, and a positioning ruler. This device adopts a fully modular, quick-release design, allowing for rapid switching between series and parallel systems, column constraint forms, and parameters. It simultaneously demonstrates the core knowledge points of inter-story force transmission in series and intra-story force distribution in parallel, verifying the shear force distribution law through measured data. This invention is easy to operate, combining visualization and quantitative measurement, effectively solving the pain points of abstract and difficult-to-understand traditional teaching methods, and significantly improving teaching effectiveness.