86 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 quality detection method in a functionally graded material preparation process, and relates to the technical field of functionally graded materials.The quality detection method comprises the following steps that the temperature of a green body in the functionally graded material preparation process is collected, and green body temperature distribution data is obtained; performing real-time thickness measurement on the green body according to the green body temperature distribution data to obtain a green body thickness change curve; identifying an abnormal fluctuation section in the thickness change curve of the green body, and carrying out phase detection on a physical region with the abnormal fluctuation section of the green body to obtain regional phase composition data; performing internal defect scanning on the green body according to the regional phase composition data to obtain an internal defect map of the green body; performing quality evaluation on the green body based on the green body internal defect map to obtain a quality grade judgment result; according to the method, the ultrasonic flaw detection scanning range is guided based on the phase abnormal region, and high-resolution internal flaw detection can be performed on the high-risk region of the functionally graded material in a targeted manner.

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 is suitable for the technical field of hovercar control, and provides a thermal-vibration-weight collaborative optimization method of a high-power-density hovercar controller, and the method comprises the steps: constructing a three-dimensional housing structure based on fractal mechanics, achieving 35-45% of weight reduction through bionic design, and remarkably reducing the weight while guaranteeing the structural strength; thermal management, electromagnetic compatibility and vibration suppression collaborative optimization layout is established, a high-heating-power module is arranged near a heat dissipation air opening, and a sensitive control unit is arranged in a center damping area of a shell; a gradient material distribution scheme is adopted, a high-heat-conduction composite material is configured in a high-heat-flow area, and a high-damping material is adopted in a vibration sensitive area. Under the high-power working condition, the heat dissipation performance of the controller is improved, vibration transmission is reduced, the overall weight is reduced, and high-reliability control hardware support is provided for the hovercar.

The invention relates to the technical field of building construction, in particular to a foundation construction material and a dynamic compaction construction method.The construction method comprises the following steps that S1, an early-stage preparation stage is conducted; s2, a trial compaction and parameter optimization stage; s3, a main body construction stage; s4, a multi-field coupling maintenance stage; s5, a foundation quality detection stage; and S6, an acceptance and filing stage. Through intelligent sensing and dynamic parameter regulation and control, self-adaptive optimization of the tamping process is achieved, over-tamping or under-tamping is avoided, and the foundation bearing capacity is improved by 15%-20%; the layered filling design of the gradient material is matched with different depth mechanical requirements, the grading continuity coefficient is larger than or equal to 0.5, and the compactness of the pier body is improved by 25% or above; an innovative Q value evaluation formula integrates multi-dimensional parameters, the detection accuracy rate reaches 90% or above, and the rework rate is remarkably reduced; the maintenance period is shortened to 7 days through the multi-field coupling maintenance technology, and the construction efficiency is improved by 50%; and the material cost is reduced by 30% by recycling the construction waste, and the method has economical efficiency and environmental protection performance and is suitable for various complex foundation treatment sites.

The invention provides a functionally graded material modeling and path planning method based on additive manufacturing, and relates to the technical field of functionally graded material additive manufacturing. The method comprises the following steps: firstly, slicing a three-dimensional space model of a part to obtain geometric contour information of a model slice layer; taking the geometric contour of the layered model slice as a constraint, and carrying out triangulation processing on the two-dimensional polygon slice layer to obtain a two-dimensional triangular mesh model; correlating the material information of the customized workpiece with the geometric information by using a curved surface grid thermal diffusion model algorithm, namely, designing a single or multiple heat source points or heat source lines, and performing gradient diffusion in a grid to generate a scalar field containing material gradient distribution information; extracting a contour line of a specific scalar value to perform region division on the slice model to form a plurality of gradient feature sub-regions; and finally, according to the contour features of different sub-regions, a corresponding path planning strategy is adopted to optimize the path, an optimal path is generated, and accurate forming of the functionally graded material is achieved.

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 a nano-particle filling axial gradient material structure optimization method, which comprises the following steps of: constructing equivalent material parameters according to agglomeration quantity parameters of a nano-particle filling axial gradient material; a perturbation amount is set according to the agglomeration amount parameter, and a vibration control equation of the axial gradient beam is constructed according to the equivalent material parameter and the perturbation amount; perturbation expansion is carried out on the vibration control equation; solving according to the perturbation expanded vibration control equation to obtain a mapping relation between perturbation amount and frequency; and acquiring a design frequency, and calculating the design frequency according to a mapping relation between perturbation and frequency to obtain corresponding agglomeration parameter data of the nano-particle filled axial gradient material, namely a structure optimization result. According to the method, the mathematical corresponding relation between the agglomeration amount parameter and the vibration frequency can be established, so that quantitative analysis, reverse design and structural optimization of the structure of the nano-particle filling axial gradient material are facilitated.

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.

The invention discloses a W-Cu gradient composite material containing a pure W layer and a preparation method of the W-Cu gradient composite material, and belongs to the technical field of tungsten-copper composites.The preparation method comprises the steps that W powder is dried for 6-8 h at the temperature of 150-160 DEG C, the pretreated W-Cu gradient composite material is preheated for 2 h at the temperature of 200-300 DEG C, then the dried W powder is laid at the W-rich end of the W-Cu gradient composite material, and the W-Cu gradient composite material containing the pure W layer is obtained; performing laser cladding on the W-Cu gradient composite material paved with the W powder in a protective gas atmosphere to obtain a W-Cu gradient composite material containing a pure W layer; the pure W layer is prepared on the surface of the W-Cu gradient material through the laser cladding method, diffusion of Cu can be effectively restrained, the density of the pure W layer is improved, and meanwhile the high-purity characteristic of the pure W layer is guaranteed; the preparation method has the characteristics of high efficiency, flexible processing and accuracy, and is suitable for industrial popularization and application.

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 application discloses an Al-Ag controllable loading function gradient composite material and a preparation method thereof. The gradient composite material has 10-15 layers, and the wave impedance distribution index is 2-3. The content of Al decreases from 100% to 0 in the gradient from the first layer to the last layer, and the content of Ag increases from 0 to 100% in the gradient. The preparation method comprises the following steps: taking the powder of the last layer to be pressed into shape, then taking the composite powder of the second last layer to be pressed on the surface of the last layer, and the like, so that a pre-pressing sample is obtained, and the whole is pressed and sintered. The single-layer component of the material is designed, the wave impedance (density) of the single-layer composite material powder changes in an exponential law according to the design curve of the gradient material, the macroscopic surface flatness of the obtained composite material is good, the densification degree, the strength and the peak stress are high, and the composite material is a gradient material with continuous or quasi-continuous impedance (density); the preparation process is simple, the operability is high, and the application prospect is good.

The present invention provides a method for preparing a Laves-phase NbCr2 / MoSi2 gradient material, belonging to the field of composite materials. The method comprises: thoroughly mixing the NbCr2 powder required for each layer and the element powder required for synthesizing MoSi2 according to the designed gradient components, number of gradient layers, and component content in each layer, and mechanically alloying the mixture to obtain the mixed powder required for each layer; cold-pressing the mixed powder required for each layer to obtain a semi-densified powder blank; then layering the semi-densified powder blank according to the designed gradient components, number of gradient layers, and component content in each layer to obtain a preform; placing the preform on a rolling mill and performing multiple cumulative roll-formings at a certain temperature to obtain a Laves-phase NbCr2 / MoSi2 gradient material for shears. The Laves-phase NbCr2 / MoSi2 gradient material prepared by the present invention exhibits sufficient reaction, high density, good bonding quality between gradient interfaces, simple process, and low cost.

The invention relates to a gradient material in-situ synthesis method based on laser additive manufacturing. The gradient material in-situ synthesis method comprises the following steps that (1) 3D printing raw material powder is selected; (2) pretreating 3D printing raw material powder; (3) 3D printing reaction gas; (4) modeling a gradient structure and planning a printing path; (5) in-situ reaction collaborative printing: a, filling the 3D printing raw material powder dried in the step (2) into a 3D printer; b, high-purity Ar is filled into the 3D printer till the oxygen content in a 3D printing bin is lower than 1%; c, a first layer of 3D printing raw material powder is laid on a 3D printer base plate, the base plate is heated to the set temperature, then printing is carried out, in the printing process, the difference of layer-by-layer reactions is achieved by adjusting the type and content of reaction gas and combining the adjustment of control parameters of printing equipment, and the 3D printing raw material powder is obtained. And component / structure continuous transition (such as a metal-gap reinforced-ceramic particle reinforced gradient interface) is formed at an interlayer interface, so that performance mutation of a traditional laminated material is avoided.

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 relates to an offshore wind power jacket pipe joint component design and manufacturing method, which comprises the following steps of: establishing a pipe joint parameterized geometric model by taking a deep sea shellfish shell growth mechanism as an initial topological structure; inputting the extreme environmental parameters of the sea area into a pre-constructed GAN model, performing fitting training by a generator in the GAN model, and outputting a gradient material space distribution scheme of jacket pipe nodes; performing optimization processing on the gradient material space distribution scheme based on a multi-target genetic algorithm to obtain an optimal solution of a target stress gradient and material distribution; by utilizing the growth mechanism of a deep-sea shellfish shell, the topological design of the pipe joint is realized, a large number of structural simulation analysis data and parameters are provided, the wall thickness of a steel plate of the pipe joint can be obviously reduced, the stress concentration phenomenon at the pipe joint is changed, the fatigue performance of the joint is improved, and meanwhile, the comprehensive manufacturing cost of the overall structure of the jacket is greatly reduced.

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 invention discloses a high-temperature-resistant impact-resistant composite material with a gradient crystallization structure and a single-time forming method thereof, and relates to the technical field of composite material preparation, the composite material is of a gradient crystallization structure formed by a surface layer and a core part, the crystallinity is continuously and progressively decreased from the surface layer to the core part, the crystallinity of the surface layer is larger than 45%, and the crystallinity of the core part is smaller than 15%. According to the high-temperature-resistant and impact-resistant composite material with the gradient crystallization structure and the single-time forming method of the high-temperature-resistant and impact-resistant composite material, integrated part manufacturing is completed through the single process of core-shell extrusion wire manufacturing and 3D printing forming, multi-part assembling is not needed, and the production period is greatly shortened; a complex special-shaped structure can be directly manufactured, subsequent processing is not needed, the problem that an existing gradient material cannot be manufactured into a complex structure is solved, the composite material takes a macromolecule as a base material, the density of the composite material is only 1 / 3-1 / 5 of that of metal such as steel, and light weight of military equipment can be achieved; and meanwhile, equipment investment and labor cost are reduced through single-process manufacturing.

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.