49 results about "Gradient material" patented technology

A valve seat for a pumping assembly. The valve seat includes a body including a gradient material structure that defines a strike face for the valve seat. The gradient material structure has a first material, a second material spaced from the first material, and a smooth compositional transition between the first material and the second material. In addition, the valve seat includes a bore extending through the body.

The invention discloses a high-density packaged TGV gradient material filling interconnection structure and a filling method thereof, and relates to the technical field of semiconductor packaging. The TGV gradient material filling interconnection structure comprises a glass through hole located in a glass substrate, and the glass through hole is filled with a conductive metal body. A micro-nano anchor structure layer, a molecular bridging layer and a conductive metal seed layer are sequentially arranged between the inner wall of the glass through hole and the conductive metal main body, and a metal bridging structure is arranged in the middle of the interior of the glass through hole; the micro-nano anchor structure layer is located on the surface of the inner wall of the glass through hole and is of a concave-convex dot matrix arrangement structure. According to the method, the micro-nano anchor nail structure and the molecular bridging layer are formed on the surface of the glass, so that the copper-glass interface bonding strength is remarkably improved, and void-free electroplating filling of the TGV through hole with the depth-diameter ratio larger than or equal to 10: 1 is achieved. The glass bridge is embedded in the glass substrate, ultra-high-density interconnection with local interconnection line width / line distance smaller than or equal to 1 m is achieved, and the 2.5 D integration requirement of more than 16 silicon-based core particles is met.

The invention discloses a preparation method of a functionally graded material without prefabricated powder addition, which specifically comprises the following steps: step 1, pretreatment: cutting and milling a test block workpiece, processing the test block workpiece into a fixed size and shape, and then cleaning the processed workpiece by using an ultrasonic cleaning machine; step 2, preparing a sample, and polishing the test block by using a metallographic polishing machine until the test block is polished; 3, electron beam treatment, wherein electron beams are adopted for conducting multiple times of irradiation treatment on the sample. And 4, tissue and performance testing is conducted, specifically, the microstructure is observed through a scanning electron microscope, and the mechanical performance of the functionally graded material is detected through a Vickers hardness tester. The method disclosed by the invention can be used for quickly synthesizing the functionally graded material without prefabricated addition, and has an extremely good application scene.

The invention discloses an artificial shoulder joint prosthesis design method and system, and the method comprises the steps: collecting the motion trail and muscle activation state of a shoulder joint in different motion modes, separating the feature frequency and amplitude of the shoulder joint motion, and extracting a dynamic motion feature set of the shoulder joint; inputting the dynamic motion feature set into a contact mechanical model based on a discrete element method, and simulating contact force and friction behaviors between the shoulder joint prosthesis and the skeleton to obtain contact mechanical characteristics of the prosthesis and the skeleton; and according to the contact mechanical characteristics, generating an initial structure of the prosthesis by using a topological optimization algorithm based on a generative adversarial network, generating a prosthesis topological structure with gradient material distribution, and obtaining an optimized prosthesis design scheme. By utilizing the embodiment of the invention, a prosthesis design scheme with gradient material distribution can be generated, the weight of the prosthesis is reduced, and the strength and durability of the prosthesis are enhanced.

This invention discloses a multi-mode processing method for friction stir deposition modeling driven by cascaded electric spindles. Based on a cascaded electric spindle-driven friction stir deposition modeling die head, the die head includes a screw shaft, a first electric spindle, and a second electric spindle that drives the screw shaft to rotate; a material conveying assembly including a storage box cover and a storage cavity formed by a specific inlet and a specific first outlet; and a stirring extrusion tool, wherein the first electric spindle includes a first hollow mandrel. This invention employs a compact coaxial cascaded electric spindle design, integrating the force transmission, heat transfer, and material transfer functions of the innovative hollow electric spindle into one unit, exhibiting modular characteristics. This overcomes the current additive manufacturing process where granular materials cannot be processed using a stirring tool in a coaxial friction stir process. Based on a circumferentially distributed multi-material conveying assembly design within the electric spindle assembly, this invention features material openness, enabling friction stir deposition modeling of multiple materials or gradient materials.

The invention relates to the technical field of selenium drum circulation, and particularly discloses a selenium drum recycling and replacing system and a control method.The method comprises the steps that firstly, quantitative characterization of subsurface defects and local mechanical properties is conducted on waste metal core base materials through microwave resonance and nanoindentation multi-source fusion detection, and a base material state quantitative data set is generated; performing multi-physical field transient simulation by taking the data set and target coating parameters as input, and predicting an interface residual stress score in a regeneration process; based on a prediction result, reversely solving a dynamic temperature control sequence and gradient material matching scheme; in a vacuum coating environment, active stress compensation coating is realized, transient thermal excitation modal testing is performed on the regenerated toner cartridge, high-frequency dynamic characteristics of the regenerated toner cartridge are extracted and compared with a simulation predicted value, simulation model parameters are optimized according to deviation data feedback, closed-loop control is formed, and the interface bonding strength and long-term imaging reliability of the regenerated toner cartridge are improved.

The invention discloses an isogeometric transient dynamics topological optimization method and system of a functional gradient plate structure, and belongs to the field of topological optimization design of functional gradient structures. According to the method, the problems of collaborative optimization of the gradient direction in the gradient material plane and the multi-material structure topology under the transient load effect and the like are solved. According to the technical key points, an isogeometric transient dynamics finite element analysis model of the functional gradient plate structure is constructed based on a reduced Gaussian integral method; constructing a smooth projection scheme and a material interpolation scheme of design variables of the functional gradient plate structure, and providing a transient dynamic topological optimization model of the functional gradient plate structure by taking the density of a control point and the volume fraction of a strong material attached to a plate unit as the design variables and the minimization of dynamic flexibility as a target; constructing a time domain adjoint equation of the topological optimization model, and obtaining sensitivity information of the target function; and finally, obtaining the optimal anti-vibration design of the functional gradient plate structure convenient for engineering application. The device is used for structural light-weight vibration reduction design of large engineering equipment under the strong vibration working condition.

The invention provides a low-deformation light-weight locally-reinforced bulletproof helmet, which relates to the field of helmet manufacturing, and comprises a basic protective layer (1), a locally-reinforced layer, a buffer energy-absorbing layer (3) and a lining comfortable layer (4), the local reinforcing layer is of a gradient material composite structure composed of a carbon fiber composite material layer (21), a silicon carbide ceramic particle reinforcing layer (22) and an aramid fiber composite material layer (23), and all the layers are combined through composite adhesive films. The buffering energy-absorbing layer (3) is arranged on the inner surface of the basic protective layer (1), and the lining comfortable layer (4) is arranged on the inner surface of the buffering energy-absorbing layer (3). The helmet has the characteristics of light weight and low deformation, local reinforcement is achieved, and the problems that an existing helmet is large in weight, poor in protection performance in key areas, large in deformation after being impacted and the like are solved.

The invention discloses a nanoindentation simulation design-based material indentation depth calibration method, device, equipment and medium, and relates to the technical field of material mechanics characterization, and the method comprises the steps of establishing a continuous gradient material finite element geometric model corresponding to a Brookfield indenter nanoindentation experiment, and constructing a continuous gradient material constitutive model with an elastic modulus continuously changing; combining the two models to perform indentation simulation at a plurality of preset maximum indentation depths to obtain simulation results; calculating an equivalent elastic modulus based on a load displacement curve in a simulation result to determine a material indentation depth corresponding to a preset maximum indentation depth of the indenter; and establishing a quantitative mapping model between the preset maximum indenter indentation depth and the material indentation depth so as to map a test result of the Brookfield indenter nanoindentation experiment at the preset maximum indenter indentation depth to the corresponding material indentation depth according to the quantitative mapping model. And the nanoindentation test result can be accurately mapped to the specific depth position of the continuous gradient material.

The invention discloses a laser welding crack tendency evaluation method for an aluminum-based gradient material packaging shell, and the method comprises the steps: designing a proper packaging shell structure according to the functional requirements of the aluminum-based gradient material packaging shell; for various material welding situations appearing in a laser welding area, metallurgical factors influencing laser welding cracks are obtained, namely, physical and chemical factors influencing laser seam welding cracks are judged according to the welding metallurgy principle, and cross test is conducted on the influencing factors through a method of generating random variables; a detection leakage rate value is obtained according to the air tightness of the verification piece after laser welding, so that the crack tendency is obtained through calculation; and a contribution model, namely a laser welding system model, of each physical and chemical factor to the laser welding crack tendency is obtained by utilizing a mathematical identification means, so that the laser welding crack tendency of the aluminum-based gradient material packaging shell is predicted. According to the method, the design of an aluminum-based gradient material packaging shell can be guided, and finally high-density packaging of the microwave part is achieved.

This invention applies selective laser cladding (SLS) technology to the fabrication of reducer pin tooth housings, designing a lightweight, high-strength pin tooth housing with both material and structural gradients. In terms of materials, a gradient material layer-by-layer printing process is employed, with the outer layer using high-strength alloy steel as the base layer, the middle layer using GCr15 bearing steel powder, and the inner gear surface coated with a thin layer of AlCoCrFeNi high-entropy alloy powder. A certain proportion of transition zone material is incorporated between each layer to enhance the wear resistance and contact fatigue strength of the pin tooth housing. Structurally, a certain structural gradient is used, with a three-layer structure designed using UG 3D modeling software. The top and bottom layers are solid and gapless, while the middle layer uses a negative Poisson's ratio hollow structure, significantly reducing the weight of the pin tooth housing and achieving lightweight design. This dual-gradient design allows the reducer to maintain better overall mechanical performance while achieving a lightweight design.

This invention relates to the field of silicon carbide crystal preparation technology, and discloses a crucible for growing high-purity semi-insulating silicon carbide crystals, comprising an inner liner layer, a transition layer, and an outer support layer sequentially composited from the inside out. The inner liner layer of the crucible adopts a composite structure of high-purity tantalum carbide matrix and rare earth oxides. Under high-temperature crystal growth environment, rare earth elements form a continuous segregation layer through grain boundary diffusion behavior, passivating active sites at grain boundaries and preventing oxygen impurities from penetrating inward. At the same time, the gradient material design of the transition layer achieves progressive matching of the coefficient of thermal expansion, fully absorbing the interfacial stress during thermal cycling and avoiding the risk of interlayer delamination, thereby ensuring the high stability and long service life of the semi-insulating properties of silicon carbide crystals. The microgroove array structure set on the outer surface of the inner liner layer is treated with pyrolytic carbon coating to construct a regular gaseous material transport path, reducing the tendency of polymorphic phase transitions at the crystal growth interface, thereby obtaining a highly uniform, inclusion-free silicon carbide single crystal structure.

The application provides a gradient material thickness measurement method and system based on laser ultrasonic dispersion spectrum, and relates to the technical field of laser measurement, and comprises the following steps: modulating excitation laser through an optical mask to form a transient grating with periodic intensity distribution, exciting ultrasonic waves with specific frequencies in a material to be measured by using the transient grating, and receiving Lamb wave signals generated by the structure of the material to be measured by using a laser interferometer for line scanning; performing two-dimensional Fourier transform on the Lamb wave signals to obtain a target dispersion curve; the target dispersion curve comprises a mapping relationship between signal frequencies and wave numbers; a sample pair composed of multiple groups of material thickness parameters and dispersion curve parameters is generated by using a transfer matrix algorithm, and a preset deep neural network is trained based on the sample pair until a loss function reaches a preset threshold range, so that a target neural network is obtained; and the target dispersion curve is input into the target neural network to obtain thickness parameters of the material to be measured.

The application discloses a titanium-niobium alloy double-gradient material and a preparation method thereof, and belongs to the field of gradient material preparation. The application utilizes an electron beam additive manufacturing technology, controls the temperature of a powder bed, controls the precipitation quantity and distribution of an alpha" phase from a beta phase, forms double-gradient changes of the volume fraction and the elastic modulus of the precipitated phase along a preset direction, and finally successfully prepares the titanium-niobium alloy double-gradient material. The method is highly controllable, the combined action of the precipitation phase gradient and the elastic modulus gradient in the prepared double-gradient material significantly improves the impact resistance of the additive manufactured titanium alloy material, and the production is simple, the production cost is low, the efficiency is high, and the method has high further research and application values.

The utility model belongs to the technical field of civil engineering, and particularly relates to a mass concrete abutment with a stable structure, which comprises a base, a stabilizing component arranged on the outer side of the base, a reinforcing component arranged on the outer side of the stabilizing component, an anti-collision component arranged on the outer side of the reinforcing component, and an anti-collision component arranged on the outer side of the anti-collision component. According to the mass concrete abutment with the stable structure, the stable assembly constructs a rigid-flexible cooperative system through gradient materials, the integrity is improved through the inner interface strengthening layer, energy dissipation and shock absorption are achieved through the middle viscoelastic material, the main load is borne by the outer rigid shell, and dynamic stress redistribution is achieved; the reinforcing assembly uses a space truss to optimize a force transmission path, concrete interlayer slippage is inhibited according to a triangular stabilization principle, and a maintenance channel is reserved to balance strength and operability; the anti-collision assembly is provided with a modularized three-level defense chain, the front section deforms to absorb energy, the middle section conducts component force, the tail end frame bears, and impact energy transmission is effectively blocked.

The invention provides a pump impeller and a preparation method thereof, and belongs to the technical field of fluid machinery. The method comprises the steps that based on impeller operation conditions, stress concentration and corrosion and cavitation erosion high-risk areas of the impeller are identified through simulation analysis; designing a functionally graded material layer in the region in the impeller three-dimensional model; a laser additive manufacturing process is adopted, the proportion of various raw materials is adjusted in real time, and an impeller blank with continuous gradient change of components, structures and performance is manufactured through layer-by-layer cladding; and finally carrying out post-treatment processing. Precise reinforcement of the key area of the impeller is achieved, the fatigue resistance, corrosion resistance and cavitation erosion resistance of the impeller are remarkably improved, meanwhile, the problem that the cost is too high due to the fact that high-performance materials are integrally used is solved, and reliability, durability and economical efficiency are considered.

The application provides a cooling and capacity-increasing overhead conductor, a dynamic ampacity determination method, a medium and equipment, and relates to the technical field of power transmission lines.The method sets the overhead conductor to adopt a three-layer composite structure, the outer layer is a passive cooling coating, the thickness is 50-200 mu m, the surface has micro-nano structures for enhancing mid-infrared radiation, the emissivity is greater than or equal to 0.92, and the contact angle is greater than 120 degrees after hydrophobic modification treatment;the intermediate layer is a high-conductivity aluminum alloy conductor layer, and the inner layer is a high-strength galvanized steel core;the coating and the conductor layer form a directional heat conduction path through a gradient thermal conductivity material, and the thermal conductivity coefficient of the gradient material increases from the coating to the conductor layer;the coating is coated in an axial segmented coating or a reticular coating manner.The overhead conductor can effectively increase the ampacity of the line and optimize the power transmission design of the line, and the dynamic ampacity determination method can obtain a quantitative index of the capacity-increasing effect.

The application relates to the technical field of vehicle engineering, and particularly discloses a load distribution optimization method and system for a lattice frame design, which comprises the following steps: firstly, an initial three-dimensional design domain of the lattice frame is established, and a composite dynamic load working condition obtained based on multi-body dynamics simulation is applied; then, a material density distribution cloud picture is obtained through macroscopic topological optimization, a main force transmission path is identified and extracted, and the design domain is divided into a core bearing area, a transition area and a non-key area; in the non-key area and the transition area, a point array structure with gradient material properties is designed according to a stress state, and continuous change of the material properties is realized by adjusting the point array type, arrangement direction and control parameters; finally, performance verification and parameter iterative optimization are carried out on the overall structure containing the core bearing area and the point array filling area.

This invention discloses a metal-ceramic composite gradient orthopedic implant material and its preparation process. This orthopedic implant material, obtained through gradient structure design, includes a specific intermediate layer thickness and interface structure: Ti matrix → Ti-Al-Si diffusion layer → Al alloy buffer layer → Al2O3 ceramic layer, effectively alleviating contact stress and preventing ceramic layer brittleness. The preparation process involves cladding a silicon-aluminum alloy onto the surface of a titanium alloy Ti-6Al-4V / TC4 using cold metal transfer (CMT) technology. After controlling the layer thickness through precision machining, a dense alumina ceramic layer is grown in situ using micro-arc oxidation (MAO). Finally, a mirror-finish composite gradient material is achieved through ultra-precision grinding. This preparation process solves the problems of easy peeling and poor wear resistance of existing coatings, addressing the clinical challenges of poor wear resistance, insufficient adhesion of ceramic coatings, and easy peeling in traditional titanium alloy implants. It constructs an integrated gradient structure with a "tough titanium alloy matrix – metallurgically bonded transition layer – high-hardness ceramic functional layer."

The application discloses a kind of functional gradient material crack plate structure dynamics analysis methods, comprising the following steps: obtaining the structure parameters and physical property parameters of crack plate, constructs the physical property parameter distribution function of functional gradient material;Based on first-order shear deformation theory and penalty function, crack plate energy functional is established;Based on the displacement of normal plate is extended to the improved fourier series, constructs the displacement function of normal plate;Establish polar coordinates on crack plate, based on polar coordinates, crack complementary function is constructed;The displacement function of normal plate and crack complementary function are added to obtain the overall displacement function of crack plate;Based on the expansion coefficient vector of overall displacement function, the characteristic equation of functional gradient crack plate structure is constructed;Based on crack plate energy functional, functional gradient crack plate structure characteristic equation is solved, and the dynamic response of functional gradient crack plate is solved by iteration.The application has less limitation to plate thickness, and most of crack plate modeling requirements can be realized according to actual demand.

The utility model provides an internal rib plate structure of an excavator bucket rod, which belongs to the technical field of engineering mechanical structures and comprises a fixed shell, an inclined rib plate fixedly mounted on one side of the fixed shell, a front rib plate fixedly mounted on the other side of the fixed shell, a connecting component arranged on the surface of the fixed shell and a supporting component arranged in an inner cavity of the fixed shell. Through the collaborative design of the connecting assembly and the multi-layer composite supporting assembly, the overall performance of the bucket rod is improved, the service life of the bucket rod is prolonged, the connecting assembly adopts the welding plate tooth structure, the tooth plate splicing design and the inserting groove and splicing plate combined design, rapid installation and multiple fixing are achieved, and the service life of the bucket rod is prolonged. The assembling efficiency is improved, the reliability of the connecting part is ensured, and the problems that a traditional rib plate is not firm in welding and complex in installation are effectively solved; the supporting assembly forms an optimized stress transfer path and a three-dimensional supporting system through gradient material layout of the connecting layer, the supporting layer, the reinforcing layer, the fixing layer and the filling layer in cooperation with a longitudinal penetrating rib structure.

The application discloses a large-gradient material feeding system, which comprises a carrier arranged on a slope and used for transporting materials back and forth along the slope, a winch arranged at the top of the slope and connected with the carrier through a traction rope and used for driving the carrier to move back and forth along the slope, a turning module arranged at the top of the slope and used for turning the traction rope so that the winch is arranged outside the extension line of the slope, and a shielding module arranged on the turning module and provided with a receiving station arranged on the turning module and a shielding station extending outside the turning module. The direction of the traction rope is changed by the turning module, so that the winch can be arranged outside the extension line of the slope, the carrier and the winch are staggered when the carrier is parked at the top of the slope, and the distance between the carrier and the transportation equipment can be effectively shortened. The shielding module is arranged, even if the materials fall, the surrounding environment can be shielded and protected by the shielding module, and the construction environment is prevented from being polluted.

An embodiment of a valve seat for a pumping assembly includes a body having a bore. In addition, the valve seat includes an embedded structure embedded in the body so as to define, at least partially, a strike face of the valve seat. The strike face extends circumferentially about the bore, and the embedded structure includes a gradient material structure having a first material, a second material spaced from the first material, and a compositional transition region between the first material and the second material.

The utility model discloses a multi-layer composite type sealing structure which comprises a corrosion-resistant layer, an elastic buffer layer and a rigid supporting layer which are sequentially arranged in a stacked mode from outside to inside, and the outer surface of the corrosion-resistant layer is provided with hydrophobic textures. An annular airtight cavity is formed between the elastic buffer layer and the rigid supporting layer and filled with inert gas. The layers are dynamically connected through at least two sets of elastic connecting pieces, and the two ends of each elastic connecting piece are embedded into the grooves of the adjacent layers respectively. The inner side of the rigid supporting layer is provided with a dovetail groove structure used for being fixedly connected with an equipment body in a clamped mode. Therefore, three layers of polytetrafluoroethylene, silicone rubber and carbon fiber compounding and aluminum alloy are coordinated, erosion and deformation are prevented, stability is guaranteed, complex working conditions are dealt with, nitrogen with 1.2-1.5 times of atmospheric pressure is filled into the airtight cavity, airtightness can be maintained emergently, the dovetail groove and the spring piece are connected, assembly is simplified, the overall service life is prolonged by more than 30% through gradient materials, and cost is reduced and efficiency is improved.

The invention discloses a concrete gradient spraying device and method for a single-layer lining, and relates to the field of underground engineering construction equipment.The concrete gradient spraying device comprises supporting frames, a spiral feeder fixedly installed on the tops of the supporting frames, a motor arranged at the end of the spiral feeder and a belt transmission assembly, and the three supporting frames form a three-channel spiral conveying system; the output end of the motor and belt transmission assembly is fixedly connected with a screw rod in the screw feeder, and the screw feeder is arranged in an inclined state. Through the collaborative design of the three-channel spiral conveying system and the mixing mechanism, a reliable structural foundation is provided for gradient spraying of concrete, the conveying amount of materials of the inner layer, the transition layer and the outer layer can be accurately adjusted through the three independently-controlled spiral feeders, linear gradual change of the material flow is achieved through control over the rotating speed of a motor, and the material mixing efficiency is improved. And it is ensured that all layers of materials are mixed according to the design proportion, and the problem that precise matching of gradient materials cannot be achieved through traditional single-channel conveying is solved.

The invention discloses a precision manufacturing method for an integrated structure of a harmonic reducer, and particularly relates to the technical field of harmonic reducer manufacturing, comprising the following steps: S1, process decision and optimization; s2, preparing a gradient material of the flexible gear ring; s3, establishing a reference; s4, rigid wheel cooperative running-in; s5, carrying out collaborative processing by a wave generator; s6, assembly integration and in-place fine adjustment are carried out; s7, pre-tightening solidification and healthy fingerprint implantation; and S8, collecting and associating initial health information. According to the method, random errors caused by part tolerance accumulation are fundamentally eliminated through'digital twinborn model reverse optimization 'and'collaborative running-in based on unified reference', so that key performance indexes of products not only reach a tip level in absolute value, but also are highly consistent in batches, and the product quality is improved. And the contradiction between wear resistance of the tooth part and fatigue resistance of the root part is broken from the material level, and fatigue crack initiation can be obviously delayed, so that the service life of the whole machine stably breaks through and exceeds that of imported same-grade products.

The application discloses a functional gradient material and a preparation method and application thereof. The functional gradient material comprises, in sequence, a martensitic stainless steel base material layer, a transition layer, a nickel-based alloy layer, a composite gradient layer and a maraging steel layer. The transition layer is made of nickel-based alloy and austenitic stainless steel; the composite gradient layer is made of nickel-based alloy and maraging steel; and the microhardness of the martensitic stainless steel base material layer, the transition layer and the nickel-based alloy layer satisfies the following relationship: martensitic stainless steel base material layer < transition layer < nickel-based alloy layer; in the composite gradient layer, at least two sublayers with different compositions are included; and from the nickel-based alloy layer to the maraging steel layer, the mass percentage of nickel-based alloy in each layer decreases by 20-40 wt% in turn. The functional gradient material effectively solves the problem of interface hardness mutation during deposition of the maraging steel, and makes the material have excellent yield strength, elongation and wear resistance.

The invention discloses a gradient material preparation method based on a laser directional energy deposition technology, which comprises the following steps: S1, planning a gradient ratio of dissimilar metal powder, and mixing the dissimilar metal powder according to the gradient ratio to prepare mixed powder with a preset ratio; s2, the mixed powder is continuously and stably conveyed to a cladding area through a pneumatic pressurization system; s3, dynamically adjusting main laser energy parameters and applying swing scanning so as to form a stable molten pool on the surface of the base material or the deposited layer; s4, auxiliary laser is introduced into the peripheral area of the molten pool, and the auxiliary laser and the main laser form a composite thermal field; and S5, the steps from S1 to S4 are repeated, and the continuous gradient material component free of pollution component transition is obtained through layer-by-layer accumulation. The mode of flat-top large-light auxiliary heating and main laser oval swinging is adopted, meanwhile, double-bin continuous powder feeding is matched, the purpose of obtaining a high-density deposition body with consistent components is achieved, cracks can be effectively prevented from being formed, and the deposition quality is guaranteed.

The invention relates to the technical field of vacuum arc extinguish chambers, and particularly discloses a gradient material vacuum arc extinguish chamber longitudinal magnetic contact based on functional partition, which comprises a contact cup and a contact blade, the contact cup is provided with an annular part and a main body part which are connected with each other, and one end, far away from the main body part, of the annular part is provided with a cup opening end; the annular part is provided with a plurality of spiral grooves arranged at intervals, the spiral grooves are used for forming a longitudinal magnetic field, and the spiral grooves extend towards the main body part along the cup opening end; the contact blade is provided with a surface layer, a middle layer and a transition layer which are stacked in sequence, and the transition layer is connected with the cup opening end; the contact cup and the contact blade are made of copper-chromium alloy, and the chromium content of the three-layer structure of the contact blade is different. According to the application, through the gradient material design of the adaptive contact function partition, collaborative optimization of surface layer ablation resistance-middle layer flow passing-structure deformation resistance of the contact is realized, and the performance shortages of the existing CuCr series contact are made up.

This invention provides a biomimetic design-based two-parameter function-controlled gradient material and its filling structure, comprising variant CFCB lattice unit cells arranged in an array along the X, Y, and Z directions, wherein the amplitude A of the variant CFCB lattice unit cells along the Z direction is... z Controlled by a two-parameter function, and with the variant CFCB lattice unit cell arrangement symmetrical along the midline of the X-Z plane, this invention, based on biomimetic design principles, applies a gradient control strategy to the geometric description and control of complex lattice materials. The resulting gradient lattice material can be used as a filler in thin-walled square tube structures. Experimental results show that the gradient lattice proposed in this invention can effectively improve the filling structure's resistance to lateral bending loads, effectively delay fiber breakage in thin-walled square tubes, and thus significantly improve the structure's bending resistance and energy absorption performance.