455 results about "Joint surface" patented technology

The invention designs an assembly process error modeling method considering heat, and realizes rapid and accurate calculation of thermal deformation of an assembly junction surface affected by heat in the part assembly process. In the part assembling process, heat generated in the assembling process is an important influencing factor influencing the assembling precision. In order to realize rapid calculation of thermal deformation in a part assembling process, a prediction model of thermal deformation of an assembling joint surface in the part assembling process is constructed by utilizing a physical information neural network. According to the method, a full-connection neural network architecture is adopted, and boundary condition constraints are introduced into a loss function item for joint optimization training. Through minimization of a loss function, a driving model learns displacement distribution characteristics of an assembly joint surface under thermal deformation, and a mapping relation between a space coordinate point and a corresponding displacement amount is established. The model finally realizes the real-time prediction capability of the thermal deformation field of the assembly joint surface.

The invention belongs to the technical field of direct shear-seepage tests of rock joints, and discloses a numerical test method for direct shear-seepage of rock joints under different boundary conditions, which comprises the following steps of: establishing a joint surface numerical model by using finite element software, and performing tests for simulating joint shear mechanical behaviors by applying different boundary conditions. And the contact state and the opening distribution of the joint surface under different shear displacements are obtained, so that the shear stress evolution mechanism of the joint surface is better revealed, and the mechanical behavior of the rough joint surface in the shear process is accurately expressed. According to the method, the evolution law of mechanical properties in the joint shearing process can be reflected, the influence of shearing deformation on the joint seepage characteristics can be reflected, joint opening data distribution is imported into programming software to be processed, a joint seepage numerical model is constructed, then multi-physics field simulation analysis software is imported, and the joint seepage performance is improved. The flow velocity, the osmotic pressure and the streamline distribution characteristics in the flowing process are calculated, so that the joint permeability characteristics are analyzed.

The invention discloses an aluminum wiring terminal, a wiring terminal unit and an assembling method, and the method comprises the steps: carrying out the laser etching of a joint surface of an aluminum conductive sheet, forming a pretreated conductive sheet with a micro-nano structure, depositing a protective coating on the joint surface, and carrying out the curing, and obtaining a conductive sheet with a protective coating. And then crimping and assembling with an insulating shell assembly to form a crimping assembly, and fixing bolts are arranged in the insulating shell assembly. Applying resonance fastening of characteristic frequency to a fixing bolt in the crimping assembly, injecting a lubricating medium in the fastening process, performing synchronous detection and verification of multi-physical field parameters on the fastening assembly, and feeding back detection data to a production control system to optimize assembly process parameters; the micro-nano structure is constructed on the joint surface of the conducting strip and the protective coating is deposited, so that the interface conductivity and oxidation resistance are remarkably improved, online detection and dynamic feedback optimization are integrated, and the consistency and reliability of the product are improved.

The invention discloses a method and a device for determining assembly fastening force of a bolt joint part, and relates to the technical field of intelligent manufacturing. The method comprises the steps that three-dimensional point cloud measurement data of a target joint surface are acquired, and the three-dimensional point cloud measurement data comprise geometric distribution error data and / or position error data; generating a target digital twin model according to the target three-dimensional point cloud measurement data; according to the target digital twin model, stress states of a target joint part corresponding to the target joint surface are simulated, and the stress states comprise a static stress state and / or a dynamic stress state; and according to the stress state simulation information, determining a target assembly fastening force of the target joint part. According to the method, the manual dependence degree in the bolt joint part assembling fastening force determination process can be reduced, so that the labor cost in the bolt joint part assembling fastening force determination process is reduced, and the determination precision and the determination efficiency of the bolt joint part assembling fastening force can be improved.

The invention discloses a method and a system for calculating dynamic contact rigidity and damping of an assembly joint surface considering anisotropy, and belongs to the field of machine manufacturing. The method comprises the following steps: acquiring three-dimensional shape data of a joint surface, fitting micro-convex bodies with anisotropy, and acquiring characteristic parameters of all the micro-convex bodies; on the basis of the characteristic parameters of the micro-convex bodies and the static contact distance between the two surfaces of the joint surface, the micro-convex bodies capable of being contacted are judged, and static contact parameters of a contact pair formed by the micro-convex bodies capable of being contacted are calculated; based on the static contact parameters of the micro-convex body contact pairs, mechanical models of the micro-convex body contact pairs are established, and static contact loads of the micro-convex body contact pairs are calculated respectively; and calculating the contact rigidity and damping of the joint surface under dynamic disturbance based on the static contact load and disturbance displacement of all the micro-convex body contact pairs. The method provides a theoretical model and a scientific basis for predicting the contact characteristics of the assembly joint surface, and is of great significance in promoting the progress and application of digital design, manufacturing and assembly of the joint surface.

The utility model discloses an anti-corrosion structure of an electrical equipment shell and an electric drive assembly, and relates to the technical field of anti-corrosion, the electrical equipment shell comprises a first shell and a second shell, the first shell and the second shell are made of different metal materials, and the first shell is made of magnesium alloy; the anti-corrosion structure comprises a first flow guide part and a second flow guide part, the first flow guide part is arranged at the bottom of the first shell in the using state, and the second flow guide part is arranged on the side face of the electrical equipment shell in the using state. According to the utility model, through the first flow guide piece and the second flow guide piece, the salt mist liquid can be prevented from being gathered at the joint surfaces of the first shell and the second shell, so that the corrosion condition is reduced. Therefore, the anti-corrosion performance of the electrical equipment shell can be improved.

Methods, systems, and devices for treating osteochondral defects (OCDs) are disclosed. The disclosed methods and systems include collecting joint surface data using image-free methods, generating a three-dimensional (3D) healthy bone model based on the joint surface data and a database of healthy bone anatomies, defining the OCD boundary on the joint, generating a 3D implant model based on the 3D healthy bone model and the OCD boundary, manufacturing an implant based on the 3D implant model, generating an implantation plan, the resected cavity on the joint. The implant includes a 3D-printed titanium alloy substrate having a first and second porous layer separated by a nonporous layer. A polymer material is over-molded onto the second porous layer and treated to exhibit properties that mimic cartilage, while the first porous layer allows the implant to fuse to patient bone.

The invention provides a sliding guide rail system kinetic analysis method considering abrasion and creep, and relates to the technical field of numerical control machine tool kinetic analysis. The method comprises the following steps: firstly, establishing a multi-source wear model of a joint surface of an angular contact ball bearing, a lead screw-nut pair and a sliding guide rail, and constructing a creep degradation model of a bearing end cover bolt based on a Norton creep law; then correcting the elastic restoring force of the guide rail system by combining the evolution laws of the abrasion loss and the creep, and constructing a dynamic model of the bidirectional sliding guide rail system considering the comprehensive influence of the abrasion and the creep; bidirectional influence among abrasion, creep deformation and dynamic response is achieved, and finally the dynamic evolution law of the bidirectional sliding guide rail system under the long-term service condition is obtained. The method is clear in modeling process, high in universality and high in calculation precision, the degradation process of the dynamic characteristics of the guide rail system along with the service time can be truly reflected, and an effective theoretical basis is provided for numerical control machine tool service life prediction, structure optimization and operation reliability improvement.

A kind of metal composite board precision machining device, including workbench, the top of workbench is sequentially spaced apart along its length direction and is equipped with feeding assembly, alignment assembly and forming assembly, the feeding assembly includes two groups of interval arrangement support, each group of support includes two opposite interval arrangement support plate, two parallel interval arrangement feeding rollers are rotatably installed between the two support plates of same group, two auxiliary rollers are rotatably arranged between the two feeding rollers, and the feeding gap for the passage of plate is formed between the two auxiliary rollers and corresponding feeding roller respectively;Two support plates arranged on the same side are fixedly provided with connecting plate between them, and cleaning assembly for removing impurities and cleaning the joint surface of base plate and cover plate is slidably arranged between the two connecting plates, and reciprocating assembly for driving cleaning assembly to reciprocate is symmetrically arranged between cleaning assembly and feeding roller. Avoiding impurities to be pressed and embedded in interlayer bonding interface under subsequent rolling pressure, the close contact of two sides fresh metal matrix is blocked.

The utility model relates to the field of pearl wool bottom box's production, especially a kind of ironing and sticking box machine, include steering mechanism, steering mechanism include the steering device of prompting bottom support active rotation, for rotating the each orientation of bottom support side face;Pearl wool side plate material feeding mechanism, include the side plate material feeding assembly moving to bottom support side face, wherein, the material feeding plate included in side plate material feeding assembly has the joint surface providing adhesion to pearl wool side plate, and, material feeding plate is equipped with multiple groups of directional components for the position calibration of different pearl wool side plate length;Heating mechanism, include the ironing plate moving to bottom support side face;The utility model includes the steering mechanism, pearl wool side plate material feeding mechanism and heating mechanism suitable for the preparation of new pearl wool bottom box in new technology, under new technology, single side plate orderly and bottom support side face carry out hot bonding, so that the pearl wool bottom box of new structure has more excellent flatness, solve the problem of stagger in prior art.

The present disclosure includes a laser welding method in which a joint surface between a plurality of workpiece members is welded by radiating laser beam LB, and a locus of laser beam LB is controlled so as to perform wobbling scanning Sw by a combination of scanning motion Sa moving along first direction x parallel to the joint surface and swing motion Sb including first swing component Bx along first direction x and second swing component By along second direction y perpendicular to first direction x, the method including a defect determination step of determining occurrence of a welding defect; and an output control step of increasing or decreasing an output of laser beam LB when laser beam LB is radiated again toward the welding defect in a case where the welding defect occurs.

The utility model provides a prefabricated channel relates to water conservancy engineering irrigation and drainage channel technical field. The prefabricated channel realizes the effective link of section through setting up support step and lap overstep at U type channel groove both ends, effectively avoids the dislocation of assembling lap joint and the damage of water stop, the joint of each section U type channel groove is constituted the combined type seepage prevention system by the joint surface sealing filler and the built -in water stop band, has improved the leakproofness and water stop effect of joint surface greatly, the top of channel groove adopts hidden type protection cover plate to cover, can strengthen the safety protection of irrigation and drainage channel, can slow down the silting of groove bottom obviously, is favorable to the later operation management maintenance, the wall body adopts the gradual expansion structure of overcurrent surface vertical, retaining soil surface inclination, can guarantee the overcurrent surface after the assembly of each adjacent U type channel groove is always even and straight, avoids the heterofacial convex, improves the flow state, U type channel groove adopts the whole prefabricated thin wall type structure, safe and stable, economic and practical, simple structure, can prefabricate or purchase the factory prefabricated product on the spot.

The application provides a pre-tightening force measuring device of a transmission drive shaft and a pre-tightening amount calibration method. The method is based on replacing the measuring device with the transmission drive shaft to be installed into a first housing and a second housing of the transmission, and comprises the following steps: after a first end surface of the measuring device is installed into the first housing, a first height and a second height are measured, the first height is a distance between a second end surface of the measuring device and a joint surface of the first housing, and the second height is a depth of a bearing hole of the second housing; an adjusting gasket is selected, the thickness of the adjusting gasket is obtained, the adjusting gasket is assembled between the second end surface of the measuring device and the second housing, and then the first housing and the second housing are assembled; the pre-tightening amount is calculated according to the thickness of the adjusting gasket, the first height and the second height; and the pre-tightening force detected by a sensor assembly in the measuring device is read as a pre-tightening force value corresponding to the calibrated pre-tightening amount. The pre-tightening force of the transmission drive shaft can be directly measured, and the pre-tightening amount can be calibrated with high accuracy.

The application discloses a packaged contactor, which comprises a cover, a base, a moving contact assembly, a static contact assembly and a magnetic propulsion mechanism, the cover is arranged above the base and the joint surface of the cover and the base is sealed, the moving contact assembly, the static contact assembly and the magnetic propulsion mechanism are all arranged in the contactor, the moving contact assembly and the static contact assembly are arranged in a phase-to-phase insulation cover, the phase-to-phase insulation cover is fixed on the base, and the moving contact assembly and the static contact assembly are oppositely arranged; the magnetic propulsion mechanism comprises a moving iron core, a static iron core and a coil framework, the moving iron core is fixed on a moving iron core support, the moving iron core support is connected with the moving contact assembly, the static iron core is inserted into the coil framework, and the moving iron core moves towards the static iron core after the coil is electrified, thereby driving the moving contact assembly to move downwards. The application can solve the technical problems of abnormal sound and poor contact of the contactor caused by dust and foreign matters entering the contactor, and significantly prolong the service life of the contactor.

The utility model discloses an auxiliary tool for a battery cell to penetrate through a plate, and particularly relates to the field of lithium battery processing. The PCB supporting piece is arranged on the side face of the bottom plate and comprises a PCB supporting and fixing plate, and a clamping face is arranged in the PCB supporting and fixing plate and used for clamping a PCB; the tab separating part comprises a tab movable comb which is vertically and slidably connected with the sliding groove, a space for containing a PCB is reserved between the PCB supporting and fixing plate and the tab movable comb, the tab movable comb comprises a plurality of comb teeth, the comb teeth are used for separating tabs of adjacent battery cells, a plurality of tab penetrating holes are formed in the PCB supporting and fixing plate in a penetrating mode, and the tab penetrating holes are communicated with the PCB supporting and fixing plate. According to the scheme, it is guaranteed that the PCB is always in an upright state, meanwhile, the tabs between the adjacent battery cells are separated through the tab movable comb, the tab penetrating holes formed in the PCB supporting and fixing plate can run single tabs to be turned over and then welded, the welding efficiency is improved, and the welding quality is improved. The accidental lap joint of the tabs in the later welding process is avoided, the insulation protection of the tabs is realized, and the welding efficiency is improved.

The invention relates to the technical field of machining part non-ideal surface generation, and particularly discloses a wavelet and fractal-considered assembly junction surface construction method which comprises the following steps: S1, according to an ideal mathematical model of an assembly junction surface, S2, comparing calculation methods of different fractal parameters, S3, aiming at the part assembly junction surface in different machining modes, calculating fractal fractal parameters according to a calculation method of the different fractal parameters; s4, the assembly junction surface is regarded as a structure formed by superposition of contours of different scales, S5, a power spectrum analysis method is introduced to analyze the surface contour curve characteristics of the assembly junction surface, and S6, according to the isotropic or anisotropic properties of the surface of the assembly junction surface in different machining modes, the surface contour curve characteristics of the assembly junction surface are analyzed. The statistical distribution characteristic parameters determined in the step S3 are introduced into characterization of the assembly joint surface; and S7, the contour curve characteristic parameters extracted in the step S4 are associated with the fractal parameters determined in the step S2. According to the method, multi-scale decomposition is carried out on the assembly joint surface through wavelet transform, and the specificity information of the roughness contour, the waviness contour and the shape error contour can be effectively extracted.

The present application provides a kind of soluble branch well temporary plugging tool, including: cylindrical body, inside being equipped with end face up limit step;Temporary plug, outer wall surface is equipped with radially outward extending shear ring, the outer surface of temporary plug is formed with first joint surface;For fixing installation temporary plug's fixed sleeve, the inner wall surface of fixed sleeve is formed with second joint surface;Wherein, the outer surface of temporary plug is equipped with anticorrosion coating, and first dissolution starting area is equipped on first joint surface, in first state, fixed sleeve will shear ring press-pack on limit step, first joint surface and second joint surface are adapted, and first dissolution starting area is sealed, so as to fix temporary plug in cylindrical body, in second state, by exerting pressure to shear ring to shear shear ring to temporary plug, so that temporary plug down, so that first dissolution starting area is contacted with solution in well, so that the temporary plug is dissolved.The present application also provides a kind of branch well temporary plugging construction method.

The application discloses a house building main body wall joint width measuring device and a use method, relates to the wall joint width measuring technical field, and aims to solve the technical problem that the traditional tool can only measure the wall joint surface width, and comprises a plug-in rod, a detection mechanism and an auxiliary mechanism. The conical head of the plug-in rod can guide the device to smoothly extend into a narrow or deep wall joint, the detection rod in the detection mechanism can be expanded along the limiting rod under the drive of the auxiliary mechanism, directly contacts the inner wall of the wall joint, and not only adheres to the surface. According to the direct contact measurement of the detection rod and the inner wall, the reading system composed of the gear, the rack, the pointer and the scale is combined, the staff can directly read the real width of the inner wall, does not need to rely on the surface data inference, avoids the measurement deviation caused by the inconsistent inner and outer sizes, accurately obtains the real width data of the inner wall, provides a reliable basis for the wall joint quality judgment, and solves the problem that the traditional tool can only measure the wall joint surface width.

This invention relates to the field of robot joint surface engineering technology, specifically to a nanopowder strengthening process for aluminum-based robot joint surfaces, comprising: Step S1, pretreatment: cleaning and roughness adjustment of the aluminum alloy joint surface; Step S2, ultra-hard nanopowder dispersion: hydrogen-terminated modification of the ultra-hard nanopowder to prepare a highly dispersed suspension; Step S3, joint surface embedding: uniformly embedding the ultra-hard nanopowder into the joint surface; Step S4, preparation of a three-layer composite coating: forming an interface by treating the joint surface using a nickel-diamond-nickel three-layer composite deposition process; Step S5, surface morphology control; and Step S6, post-treatment strengthening: low-temperature curing and stress release treatment. This invention provides a nanopowder strengthening process for aluminum-based robot joint surfaces, improving the hardness and wear resistance of the aluminum-based robot joint surfaces.

To improve joint strength in a joint structure between wooden pieces without notches. [Solution] A wooden joint structure 1 joins columnar wooden pieces 21 and 22 via joint surfaces 211, 222 provided at the tips of the pieces of wooden piece 21, and has a first convex portion 4 that protrudes from the joint surface 211 of the wooden piece 21 where it meets the wooden piece 22 towards the wooden piece 22, a first concave portion 6 that is recessed from the joint surface 222 of the wooden piece 22 where it meets the wooden piece 21 in a direction away from the wooden piece 21 and with which the first convex portion 4 engages, and a screw 8 that is screwed into the wooden piece 22, wherein a central axis Lx1 along the longitudinal direction of the wooden piece 21 and a central axis Ly1 along the longitudinal direction of the wooden piece 22 intersect, and when viewed from the direction of the central axis Ly1, the screw 8 is provided in a range that crosses the area that overlaps with the first concave portion 6.

The invention discloses an integral binding construction method for columnar structural steel bars. The integral binding construction method comprises the following steps that a complete columnar steel bar framework is divided into two prefabricated parts which are symmetrical in shape and structure along the central longitudinal section of the columnar steel bar framework; binding of the main reinforcements and the closed stirrups of each prefabricated part is completed in a factory, and two symmetrical half-body frameworks are formed; the two half frameworks are transported to a construction site and sequentially hoisted to a target installation position; at the target mounting position, measuring and adjusting the spatial attitude of the two half-body frameworks which are in place in sequence, so that the two half-body frameworks are symmetrically aligned according to the designed position; and the two half frameworks are connected into a complete and closed columnar steel reinforcement framework whole body through a connecting section at the involution surface between the two half frameworks of which the positions are adjusted. The problems that in traditional construction, efficiency is low, precision is poor, and potential safety hazards are large are solved.

The application relates to the technical field of non-ideal surface generation of machined parts, and particularly discloses a construction method of an assembly joint surface considering wavelet and fractals, which comprises the following steps: S1, according to an ideal numerical model of the assembly joint surface; S2, comparing calculation methods of different fractal parameters; S3, aiming at the assembly joint surface of parts under different machining modes; S4, regarding the assembly joint surface as a structure formed by superposition of different scale contours; S5, introducing a power spectrum analysis method to analyze the surface contour curve characteristics of the assembly joint surface; S6, according to the isotropic or anisotropic properties of the assembly joint surface under different machining modes, introducing the statistical distribution characteristic parameters determined in step S3 into the representation of the assembly joint surface; and S7, associating the contour curve characteristic parameters extracted in step S4 with the fractal parameters determined in step S2. Through multi-scale decomposition of the assembly joint surface by wavelet transform, the specific information of the roughness contour, the waviness contour and the shape error contour can be effectively extracted.

This invention relates to a nested rubber waterstop, a joint-face waterstop structure, and its construction method. It is applicable to the field of water conservancy and hydropower engineering. The technical solution adopted in this invention is: a nested rubber waterstop, characterized in that it has a fixed wing and a movable wing. The fixed wing has a cavity inside that can accommodate the movable wing. One side of the fixed wing in the width direction has an opening for the movable wing to extend from the cavity. The other side of the fixed wing in the width direction is connected to a grouting pipe communicating with the internal cavity of the fixed wing. A limiting structure I is provided on the side of the movable wing near the grouting pipe. The opening of the fixed wing has a limiting structure II that cooperates with the limiting structure I on the movable wing to prevent the movable wing from completely detaching from the fixed wing.

The utility model relates to the technical field of die-casting dies, in particular to a back pressure sliding block structure of a movable die of a high-pressure casting die, which comprises a movable die sleeve plate, a movable die core positioned in the center of the movable die sleeve plate, a plurality of groups of core pullers fixed in the circumferential direction of the movable die sleeve plate, and a plurality of back pressure sliding blocks positioned between the core pullers and the movable die core, the back pressure sliding block is connected to the movable mold sleeve plate in a sliding manner; the core puller is used for driving the back pressure slide block to slide horizontally; the end, close to the movable mold core, of the back-pressure sliding block is provided with an extending face, a back-pressure pressing face and a profiling face, the back-pressure pressing face is horizontally arranged, the extending face protrudes towards the movable mold core, and the back-pressure pressing face is connected between the profiling face and the extending face. According to the scheme, demolding can be smoother, strain is reduced, and the product quality is improved; meanwhile, a reverse thrust mechanism of the fixed mold is omitted, the mold structure is simplified, the cost is reduced, and the production efficiency is improved.

The present invention provides a method for repairing structural members that can suppress carbonization of the central portion of structural members in the event of a fire, when gaps occur between the joint surfaces of wooden materials. [Solution] In a method for repairing a structural member 1 in which a gap G occurs at the joint surface F between the wooden members 2, the method includes a step of filling the gap G at the joint surface F between the wooden members 2 with a heat intrusion suppressing material 11 that suppresses the intrusion of heat.

The utility model provides a subway track base construction device which comprises a base plate body, a pre-stressed anchor bolt set, an elastic cushion, a curvature adjusting mechanism and at least two connecting base plates, dovetail grooves are formed in the two sides of the base plate body, tenons matched with the dovetail grooves are arranged at the ends of the connecting base plates, and the connecting base plates are connected with the pre-stressed anchor bolt set. The pre-stressed anchor bolt set penetrates through the joint face of the base plate body and the connecting base plate, and the elastic cushion layer is bonded to the bottom of the base plate body. The curvature adjusting mechanism comprises an arc-shaped guide rail and a sliding block matched with the arc-shaped guide rail, the arc-shaped guide rail is connected to the top face and / or the bottom face of the base plate body, and the sliding block is connected with the connecting base plate. According to the utility model, through the modularized matching of the dovetail grooves and the tenons and the rigid connection of the pre-stressed anchor bolt groups, the rapid assembly and stable butt joint of the substrate body and the connecting substrate are realized, the elastic cushion layer reduces the vibration transmission of the track, and the curvature adjusting mechanism enables the substrate structure to flexibly adapt to the construction requirements of different linear tracks; and the construction efficiency and the track smoothness are improved.

The application is suitable for the technical field of machine tool combination assembly, and provides a micro contact joint surface static friction coefficient calculation method, which comprises the following steps: obtaining joint surface characteristic parameters; based on fractal theory and elastic theory, constructing base additional deformation and micro convex body normal deformation equation, through micro stress analysis, establishing single micro convex body deformation geometric parameters; considering three deformation stages of micro convex body, obtaining joint surface contact area and contact load; using modified island distribution function to integrate joint surface real contact area and contact load in different deformation stages, obtaining joint surface real contact area and contact load; considering the influence of static friction coefficient on contact surface characteristics, establishing joint surface static friction coefficient model. The application establishes surface static friction coefficient model from the micro contact angle, and simultaneously considers the interaction of micro convex body and base and three stages of material elastic, elastic-plastic and complete plastic deformation.

The invention discloses a fractured rock mass anchor rod anchoring performance impact tensile test system and test method, and relates to the technical field of mechanical property testing. A high-strength spring energy storage mechanism, a double-drop-hammer impact mechanism and a fixed cross beam of the system are respectively mounted on a guide supporting polished rod, and the double-drop-hammer impact mechanism and an impact plate are fixedly connected or not fixed and are respectively used for an impact test of a momentum transfer method and an impact test of a drop-hammer free falling body method. The technical problem that existing test equipment cannot be compatible with two test methods is solved. The test system can be used for carrying out a tensile impact test on the axial anchoring performance of an anchor rod at a rock mass joint surface, switching and integration of an impact test of a momentum transfer method and an impact test of a drop hammer and free falling body method are realized, a tester can provide larger impact energy at a small height, and the test efficiency is improved. Meanwhile, the synchronism of drop hammer impact can be guaranteed, and the impact test system can be suitable for tensile impact performance tests of anchor rods in concrete filled steel tubes and large-size rock masses.

The embodiment of the invention provides a joint surface peak shear strength prediction method, device and equipment, a medium and a program product, and the method comprises the steps: scanning a protolith joint surface, and obtaining protolith joint point cloud data; acquiring a description function, and describing the distribution of the micro-convex bodies in the primary rock joint surface by combining the description function with the joint point cloud data; determining distribution function density and any normal stress; according to the initial peak shear and dilatancy angle in the initial state when cyclic shearing does not occur, the average value of the dip angles of the joint micro-convex bodies in actual contact is determined, and the peak shear and dilatancy angle during multiple times of cyclic shearing is determined; determining a peak shear strength prediction model of the joint surface according to the number of cyclic shear times; model calculation is simple, high-precision prediction can be achieved only through a small number of parameters, and the method is suitable for engineering application.

The present invention provides a method for manufacturing a jointed body of solid metals and a composite member that can increase the bonding strength at the joint surface. [Solution] A solid metal body containing a first component is brought into contact with a solid metal material consisting of a compound, alloy, or non-equilibrium alloy that simultaneously contains a second component and a third component, each having positive and negative mixing heats relative to the first component, respectively. A predetermined pressure is applied between the metal body and the metal material while performing heat treatment at a predetermined temperature for a predetermined time. This causes the first component and the third component to mutually diffuse, and the alloy liquid containing the first component and the third component, which is generated in the region where the first component and the third component have mutually diffused, is discharged.