185results about How to "Promote reduction" patented technology

The invention discloses an automatic dubbing method and system based on generative AI. The method comprises the following steps: separating a human voice audio, a background voice audio and a silent video part from an original video, automatically identifying and translating text content in the audio, and combining a translated text with a corresponding time period to generate a translated subtitle text; segmenting the voice audio into segments, marking character attributes for each segmented segment according to voiceprint features, and evaluating the voice quality at the same time; converting the segmented subtitle text into timbre audios of a target language by using a TTS technology, and connecting and merging the audios according to the starting and ending time of the subtitles; and finally, synthesizing the generated target audio with the background sound audio and the silent video to obtain a complete target video. The above steps efficiently complete dubbing work of multiple languages, multiple roles and multiple scenes, and improve dubbing quality and dubbing efficiency.

The invention discloses a defense method oriented to adversarial patch attacks, and the defense method oriented to adversarial patch attacks is realized by designing an adversarial mask generation method and a classification-reconstruction joint training method by utilizing the characteristic that a mask reconstruction task has good feature extraction capability. According to the defense method facing the adversarial patch attack, an image recognition model is divided into a backbone network and a full connection layer which are respectively used for feature extraction and classification prediction, and after a reconstruction model is connected to the backbone network, the reconstruction model is used for receiving image features extracted by the backbone network and reconstructing an image. The connected image recognition model backbone network, the full connection layer and the reconstruction model are generally called as training models. The connection mode does not need to modify the structure of an original image recognition model, only optimizes the weight parameters of the original model, is suitable for deep learning visual models of any architecture, is suitable for models in any training state, and does not need to forcibly train from the beginning.

The invention relates to an audio processing method, device and system and a storage medium, relates to the technical field of data processing, and aims to at least solve the problem of serious distortion of output audio in related technologies. The method comprises the following steps: inputting a to-be-processed audio into an audio conversion model, so as to adopt the audio conversion model to execute the following operations: calling an encoder to encode the to-be-processed audio into a target continuous encoding signal; quantizing the target continuous coded signal vector into a target discrete coded signal based on a preset codebook; calling a decoder to decode the target discrete coded signal into a target audio composed of continuous target output coded signals based on a preset codebook; wherein the preset codebook comprises an association mapping relation between a continuous coding signal and a discrete coding signal, and the audio conversion model is trained by taking reconstruction loss, codebook loss and retention loss of coding and decoding of a coder and a decoder as constraint targets; and outputting a target audio obtained after the operation of the audio conversion model is completed.

The invention relates to an intelligent fish community stability evaluation method and system based on a network model, and the method comprises the steps: optimizing species distribution data based on the influence of a single species on community biodiversity and the influence of interspecific interaction on a community structure, obtaining species distribution optimization data, and constructing a community association network model; quantifying the functional diversity overlapping degree of the species by adopting a PCoA method and constructing a functional ecological niche network model; constructing a comprehensive network model according to the community association network model and the functional ecological niche network model; and constructing a radar map according to the community association network model, the functional ecological niche network model and the comprehensive network model, and evaluating the network stability based on a radar map area method. According to the method, the deficiency of the interaction relationship between the species caused by incomplete sampling can be better reflected, the network structure is more complex and closer to the real situation, the interaction relationship between the species can be deeply mined, and the accuracy of the evaluation result and the comparability between different biocenosis networks are improved.

The invention provides a PtCo-based composite catalyst and a preparation method and application thereof.The PtCo-based composite catalyst comprises a carrier and a load, the carrier comprises mesoporous carbon, the load comprises platinum-cobalt-based metal particles and a compound with the chemical formula being HxMO3, and M comprises W or / and Mo; a contact interface exists between the platinum-cobalt-based metal particles and the compound with the chemical formula of HxMO3; the platinum-cobalt-based metal particles comprise a first part of the platinum-cobalt-based metal particles, and the first part of the platinum-cobalt-based metal particles are supported in the mesoporous structure of the mesoporous carbon. According to the PtCo-based composite catalyst, a contact interface exists between HxMO3 and PtCo-based metal particles, the catalytic activity of platinum and cobalt can be improved, and reduction of oxygen on the surface of the catalyst is facilitated; part of platinum-cobalt-based metal particles are supported in a mesoporous structure of mesoporous carbon, so that the stability of the catalyst can be improved.

The invention relates to the technical field of sign language recognition, and provides a continuous sign language recognition method, electronic equipment and a storage medium. The method comprises the following steps: firstly, collecting and segmenting a continuous sign language video, extracting an isolated sign language action boundary through a BIO tag, and constructing a sign language library after data enhancement; then key point information of hands, faces and upper bodies is extracted, and comprehensive feature vectors are generated in combination with RGB features; and extracting double-flow sequence information by using an online CSLR model and an offline ISLR model, and translating in a text network to generate a sign language text sequence. According to the method, the accuracy and real-time performance of continuous sign language recognition can be effectively improved.

The invention relates to the technical field of sludge treatment, and discloses a sludge treatment method based on sludge reduction and ammonia nitrogen recovery, which comprises the following steps: 1) alkali thermal hydrolysis: adding alkali into sludge to adjust the pH value to 9-11, and carrying out thermal hydrolysis reaction; (2) wet oxidation: heating after reaction and discharging, and carrying out wet oxidation reaction; (3) flash evaporation: carrying out heat recovery after reaction discharging, and carrying out flash evaporation to obtain a sludge mixed solution and flash evaporation steam; (4) dewatering: performing heat recovery on the sludge mixed solution, and then dewatering to obtain a sludge cake and filtrate; and (5) ammonia nitrogen air stripping: carrying out ammonia nitrogen air stripping on the filtrate by adopting steam, wherein the filtrate after air stripping can be reused as a carbon source for sewage treatment. According to the method, the oxidative degradation efficiency of the sludge is improved through coupling of alkali thermal hydrolysis and wet oxidation treatment, ammonia nitrogen recovery and sludge reduction are facilitated, and the filtrate has the characteristics of high COD and low total nitrogen and is more suitable for being used as a carbon source.

The invention discloses a carbon nitride loaded metal diatom photocatalytic material as well as a preparation method and application thereof. The invention belongs to the field of photocatalytic materials. The invention aims to solve the technical problems of complex preparation process and low photocatalytic efficiency of the existing metal diatom photocatalyst. The method comprises the following steps: dissolving a nitrogen source and a phosphorus source in deionized water, and carrying out hydrothermal reaction to obtain a precursor; dissolving the precursor in a mixed solvent of alcohol, and then refluxing at constant temperature for a certain time to obtain a pre-product; and adding a metal compound solution capable of forming a conjugated system into the pre-product, carrying out ultrasonic treatment, heating in a constant-temperature water bath kettle, and calcining to obtain the carbon nitride loaded metal diatom photocatalytic material. The obtained photocatalytic material has the advantages of high visible light utilization rate, low photo-induced electron-hole recombination rate and high electron transfer rate. The method is used in the fields of photocatalytic hydrogen production, carbon dioxide reduction and organic matter oxidation.

The invention provides a loading and unloading machine prototype and a loading and unloading machine test simulation device.A loading and unloading machine is suitable for being tested in the loading and unloading machine test simulation device, the loading and unloading machine test simulation device comprises one or more simulation fuel assemblies and a simulation water tank, and each simulation fuel assembly comprises one or more positioning holes and assembly codes. The simulated water tank is used for containing liquid with a certain height, the loading and unloading machine comprises a gripping apparatus, the gripping apparatus comprises one or more positioning columns and one or more grippers, and the positioning columns are suitable for being matched with positioning holes in a simulated fuel assembly; a camera adapted to observe a component code of the one or more simulated fuel components; the negative pressure water tank comprises a first surface and a second surface opposite to the first surface, and the second surface is always located below the liquid level of the liquid in the simulation water tank; and a bracket. The assembly information of the fuel assembly can be accurately identified, and the space and the cost of a simulation test are saved.

The invention discloses a preparation method of a circulation type gas diffusion electrode for electrochemical CO2 reduction, and belongs to the technical field of electrochemical CO2 reduction. The circulation type gas diffusion electrode directly conveys carbon dioxide to the surface of a cathode in the electrochemical CO2 reduction process; the specific preparation method comprises the following steps: adding N-methyl-2-pyrrolidone into polyethyleneimine, and carrying out ultrasonic treatment; the preparation method comprises the following steps: adding copper powder into a transparent and uniform mixed solution of N-methyl-2-pyrrolidone and polyethyleneimine, and carrying out magnetic stirring; and calcining the uniform mixture of N-methyl-2-pyrrolidone, polyethyleneimine and copper powder and the hollow fiber of polyethyleneimine and copper powder in a smelting furnace to obtain the FTGDE electrode. By adopting the preparation method of the circulation type gas diffusion electrode for electrochemical CO2 reduction, disclosed by the invention, efficient transmission and utilization of carbon dioxide are ensured, and the electrochemical reduction reaction efficiency is improved.

The invention discloses a preparation method and application of a lithium-sulfur battery positive electrode material. The preparation method comprises the following steps: cross-linking chitosan and phytic acid to prepare porous biological carbon aerogel; compounding the porous biochar aerogel with a catalyst nano In2O3 to obtain a porous biochar aerogel-coated In2O3 composite material; performing freeze drying and microwave heating treatment to carbonize the aerogel to obtain an N, P co-doped three-dimensional porous biological carbon-coated In2O3 composite material; and compounding with elemental S to obtain an N and P co-doped three-dimensional porous biochar (at) In2O3 (at) S composite material, namely the lithium-sulfur battery positive electrode material. The positive electrode material with a'confinement-anchoring-catalytic conversion 'multifunctional coupling effect is constructed, when the positive electrode material is applied to the lithium-sulfur battery, confinement and anchoring of LiPSs can be achieved, catalytic conversion of the LiPSs can be promoted, the shuttle effect of the LiPSs is fundamentally inhibited, and the rate and the cycling stability of the LiPSs are remarkably improved; the method has the advantages of simple preparation process, environmental friendliness and the like.

The invention provides a preparation method and application of a MoS2 / Fe2O3 (at) Fe-MOF modified carbon electrode, and the preparation method of the MoS2 / Fe2O3 (at) Fe-MOF modified carbon electrode comprises the following steps: preparation of Fe2O3 (at) Fe-MOF powder, preparation of isopropanol IPA-MoS2 nanosheet dispersion liquid, preparation of MoS2 / Fe2O3 (at) Fe-MOF composite material dispersion liquid, and preparation of the MoS2 / Fe2O3 (at) Fe-MOF modified carbon electrode. The problems that an existing cathode is low in HO generation and activation catalysis performance, the pollutant degradation performance is not ideal, electrode materials are complex to prepare, cost is high and the like are solved. The prepared composite electrode is applied to a BEF system, has high power density, good electron transport performance and excellent degradation performance on antibiotics, can be recycled for multiple times, and has a very wide application prospect in the field of electro-Fenton.

The invention relates to the technical field of image processing, and particularly discloses a virtual clothes changing system based on an AI algorithm, and the system comprises a preprocessing module which carries out the filling, size adjustment and normalization processing of a first image; obtaining a user portrait and obtaining a target image; the visual large model processing module is used for mapping the second clothing image, the noise image and the target image to a high-dimensional space; performing feature extraction on the second clothing image in the high-dimensional space to obtain a first feature; splicing the noise image and the target image in the high-dimensional space to obtain a standard image, and performing feature extraction on the standard image to obtain a second feature; fusing the first feature and the second feature, and obtaining a virtual fitting image; and the post-processing module is used for obtaining a fitting portrait and obtaining a virtual fitting effect image according to the fitting portrait and the user background. According to the method, various types of clothes can be stably tried on, and meanwhile, natural textures, wrinkles and actual lengths of the clothes in a real dressing state are presented.

The invention provides a self-supervised staining standardization method based on a de-noising diffusion probability model, which is mainly used for solving the problems of low robustness and generalization when a computer-aided system analyzes a histopathological image, and information loss, staining errors and the like existing in a current staining standardization algorithm. Compared with the prior art, by means of the denoising diffusion probability model and the self-supervising training method, staining standardization of histopathology images of various staining styles is achieved, the cell morphological structure is reserved, the accuracy of disease diagnosis of a computer-aided system in downstream tasks such as classification and segmentation is improved, and the method is suitable for popularization and application. And clinical practice and medical research promotion are facilitated.

The method comprises the following steps: crushing the cyanidation tailings, putting the crushed cyanidation tailings, biomass material powder and an alkaline substance into a reaction kettle, adding water, heating to 200-350 DEG C, carrying out hydrothermal reaction treatment, and filtering after the hydrothermal reaction is finished, so as to obtain a sodium silicate solution and a solid filter; adding hydrochloric acid into the sodium silicate solution for pH regulation, then adding bone glue, heating, stirring, filtering and separating to obtain the sodium silicate solution and desiliconized tail liquid; and the solid filtered matter is subjected to gold element enrichment through a carbon leaching method, then solid-liquid separation is conducted, the solid obtained through separation is subjected to magnetic separation, and gold-loaded carbon and iron ore concentrate are obtained. According to the method, the waste biomass material is adopted as a reduction material of the cyanidation tailings, and a hydrothermal treatment mode is adopted in an alkaline environment, so that the process cost in the production process can be greatly reduced, no harmful substance is generated in the reduction process, and the environment can be effectively protected; and meanwhile, separation of valuable metals can be promoted.

The invention relates to an artificial SEI film and a preparation method thereof, and belongs to the technical field of metal batteries. The artificial SEI film is composed of polytetrafluoroethylene, a dispersant, deionized water, a conductive agent and a binder, and the specific preparation method comprises the following steps: coating the surface of a copper foil with a layer of polytetrafluoroethylene-containing prime coat slurry, drying, cutting the coated copper foil into a specific shape, assembling into a battery, and carrying out pre-charging treatment. And the formed SEI film has dual effects of promoting uniform deposition of lithium metal and preventing reaction of the lithium metal and electrolyte, so that the stability of the negative-electrode-free lithium metal battery is greatly improved. In addition, the conductive agent is also added into the prime coat slurry, so that the rate capability of the battery is greatly improved. The SEI membrane constructed by adopting the method disclosed by the invention has very important significance for realizing the commercial value of the negative-electrode-free lithium metal battery.

The invention discloses a wafer-level single-layer MoS2 film and a preparation method thereof, and the method comprises the steps: taking sulfur powder and molybdenum trioxide powder as reaction precursors, and respectively placing the reaction precursors in two quartz boats; the quartz boat containing the sulfur powder, the quartz boat containing the molybdenum trioxide powder and the C-face sapphire substrate which is vertically placed in the air flow circulation direction are placed in a first temperature zone, a second temperature zone and a third temperature zone in the single-tube type CVD tube furnace respectively, wherein the first temperature zone, the second temperature zone and the third temperature zone are arranged in the single-tube type CVD tube furnace; the method comprises the following steps: cleaning a single-tube CVD tube furnace, introducing a carrier gas into the cleaned single-tube CVD tube furnace, respectively heating sulfur powder, molybdenum trioxide powder and a C-plane sapphire substrate when a preset pressure in the furnace is reached, and forming a wafer-level single-layer MoS2 film with good uniformity and relatively high quality, thereby solving the technical problems of low yield and poor uniformity of a two-dimensional MoS2 film obtained by existing mechanical stripping.

The invention discloses a coal gas injection method in a limonite sintering process, which comprises the following steps of: integrally imaging a sintering charge level according to a thermal imager above the charge level of a sintering machine to obtain the predicted temperature of the charge level, and dividing the charge level into a preheating area, a low-temperature reaction area, a medium-temperature reaction area, a high-temperature sintering area and a cooling area according to the predicted temperature of the charge level; blowing coal gas and mist water drops to the preheating area, the low-temperature reaction area, the medium-temperature reaction area, the high-temperature sintering area and the cooling area according to the coal gas injection amount and pressure and the mist water drop injection amount and pressure of the corresponding areas, and sintering; local overheating or supercooling can be avoided, and the sintering quality is powerfully guaranteed; the gas permeability of a material layer can be optimized through partitioned injection of water vapor, gas circulation and reaction development are facilitated, according to different sintering stages, coal gas and fog drop water are injected at a certain flow rate and pressure, various working conditions can be well adapted, solid fuel consumption in the sintering process is reduced, and the sintered ore yield is increased.

The invention discloses a method for preparing benzoic acid by oxidizing toluene at room temperature, which comprises the following steps of: reacting toluene serving as a raw material, acetic acid serving as a solvent, cobalt salt and a nitrogen-containing compound serving as catalysts, imine serving as a cocatalyst and oxygen serving as an oxidant at normal temperature and normal pressure to prepare benzoic acid; according to the technical scheme, reaction conditions are mild, a catalytic system is homogeneous and soluble, corrosion hazard of the catalyst to process equipment under high-temperature reaction is avoided, and the method belongs to the technical field of fine chemical engineering.

The invention discloses a signal generation method and device, a readable storage medium and a computer program product, and relates to the technical field of signal processing, the signal generation method and device are applied to audio equipment, the audio equipment comprises an omnidirectional microphone and a splayed directional microphone, and the method comprises the following steps: acquiring a picked original audio signal, the original audio signal comprises a first audio signal and a second audio signal, the first audio signal is an audio signal picked up by an omnidirectional microphone, and the second audio signal is an audio signal picked up by a splayed directional microphone; sound channel separation processing is carried out on the original audio signal to obtain a dual-sound-channel signal, and the dual-sound-channel signal comprises a left sound channel signal and a right sound channel signal; sound source parameters corresponding to the sound source are calculated based on the dual-track signal, the original audio signal is rendered according to the sound source parameters, a generated target audio signal is obtained, and the sound source parameters comprise the sound source orientation and / or the sound source size. According to the invention, the universality of stereo recording is improved.

The invention provides a preparation method of high-purity germanium dioxide, and relates to the field of preparation and research of detectors, and the method comprises the following steps: S1, carrying out a hydrolysis reaction on germanium tetrafluoride gas, and adding dilute sulfuric acid into the generated germanium tetrafluoride hydrolysate to generate a germanium sulfate solution; s2, adding a sodium hydroxide solution into the germanium sulfate solution, and stirring to generate a sodium germanate solution; and S3, adding concentrated hydrochloric acid into the sodium germanate solution, carrying out chlorination distillation, stopping distillation when the distillation temperature of a fraction is greater than or equal to 110 DEG C to obtain a germanium tetrachloride fraction, cooling, hydrolyzing, filtering and drying to obtain the high-purity germanium dioxide. According to the preparation method disclosed by the invention, the hydrolysis loss of the germanium tetrachloride is effectively reduced, the distillation yield of the germanium tetrachloride is improved, so that the yield of the germanium dioxide is improved, other volatile substances are not introduced in the reaction process, other impurities are not introduced during distillation of the germanium tetrachloride, and the purity of the germanium dioxide product is effectively improved.

The invention discloses an internal aeration type organic wastewater treatment device, which is characterized by comprising an electrolytic bath, an aeration device, a water tank, a water inlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, and the electrolytic bath is internally provided with an anode plate and a cathode plate; the aeration device is arranged close to the anode plate; a positive electrode and a negative electrode of the direct-current power supply are respectively connected with the positive plate and the negative plate; an air pump; wherein a cavity is formed in the negative plate, and the cavity is connected with the air pump, so that air is introduced into the negative plate through the air pump. The device is simple in structure, the technological process is simplified, energy consumption and cost are reduced, and the removal efficiency of organic pollutants can be improved.

The utility model discloses an atomizing core and an atomizer. According to the atomizing core, the heating net and the oil guide cotton are integrally formed on the plastic base and located in the containing space of the plastic base, and the heating net and the oil guide cotton are arranged in an attached mode, so that the atomizing core can be manufactured in a one-time forming mode; compared with the prior art, the atomization core has the advantages that the complex machining process that an existing atomization core needs to be assembled through multiple steps or a heating net needs to be inlaid is avoided, the atomization core manufactured in the one-time forming mode has good consistency and stability, batch machining can be achieved through the one-time forming mode, and in addition, the production cost is reduced. The tobacco tar guiding cotton is adopted as a tobacco tar guiding material, the good reduction degree of the tobacco tar taste can be guaranteed, the smoke amount is thicker, and therefore the better taste is achieved.

The utility model discloses a simulation device for science popularization of natural disasters, which relates to the technical field of science popularization of natural disasters and comprises a base, a vibration mechanism is arranged at the top end of the base, a first connecting plate is fixedly connected to the top end of the vibration mechanism, and a swing mechanism is arranged on one side of the top end of the first connecting plate. One end of the swing mechanism and the top end of the first connecting plate are jointly provided with a base, the vibration mechanism comprises a first support, the top end of the first support is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first bevel gear, and the outer surface of the first bevel gear is in meshed connection with a second bevel gear; according to the science popularization simulation device, by arranging the vibration mechanism, the effect of conveniently and well restoring the scene when longitudinal waves occur in an earthquake is achieved, the use effect of the science popularization simulation device is improved, by arranging the swing mechanism, the effect of conveniently and well restoring the scene when transverse waves occur in the earthquake is achieved, and the practicability of the science popularization simulation device is improved.

The invention discloses a culture medium and a culture method of a breast cancer organoid. The culture medium comprises an Advanced DMEM / F12 basal culture medium and an additive, the additive is prepared from penicillin streptomycin / amphotericin B, a B-27 additive, L-glutamine amide, HEPES (Hydroxyethyl PES), N-Acetylcysteine, nicotinamide, SB202190, A83-01, FGF10 (Fibroblast Growth Factor 10), EGF (Epidermal Growth Factor), human Hergulin beta-1, Y27632, WNT-3A, R-spondin 1, NOGGIN (Nitrogen Growth Factor IN), FGF7 (Fibroblast Growth Factor 7) and beta-estradiol. The culture method of the breast cancer organoid comprises the step of using the breast cancer organoid culture medium, and the method specifically comprises the steps of tissue sample taking, primary tissue construction, breast cancer organoid liquid changing and breast cancer organoid subculture. According to the prepared breast cancer organoid culture medium, tumor cells taken from breast cancer tumors grow fast, the cell speed is high, and follow-up medicine screening experiments can be facilitated; after the breast cancer organoid culture medium is used for culturing the breast cancer organoid, the cellular morphology and the protein expression condition of the organoid are identified through HE and immunohistochemistry, and it can be seen that the organoid can well reduce the pathological characteristics of the tissue.

The preparation method comprises the following steps: S1, mixing a first lithium source, a first iron source, a first manganese source, a first phosphorus source, a first doped metal source, a first carbon source and a first solvent to obtain a first mixed slurry, and carrying out spray drying and first sintering to obtain a seed crystal; s2, mixing the seed crystal, a second lithium source, a second iron source, a second manganese source, a second phosphorus source, a second doped metal source, a second carbon source and a second solvent to obtain second mixed slurry, performing spray drying, and performing secondary sintering to obtain a lithium manganese iron phosphate composite material; the iron sources are + 3-valent iron sources, and the manganese sources are non-+ 2-valent manganese sources; and the ratio of the total amount of the iron element in the first iron source and the manganese element in the first manganese source to the mass of the first carbon source is 1mol: (3.0-7.5) g. By using the first carbon source, the gram volume of the lithium manganese iron phosphate composite material can be improved.

This application provides a conductive polyimide film and its preparation method, belonging to the field of conductive materials. The method involves preparing a polyamic acid solution, mixing surface-coated rod-shaped silver powder with the polyamic acid solution, and then performing a casting process followed by gradient heating to obtain a polyamic acid film enriched with rod-shaped silver powder at the bottom. The rod-shaped silver powder-rich surface of the obtained polyamic acid film is then subjected to an ion exchange reaction with a silver nitrate solution. The ion-exchange film is then cleaned and subjected to thermal imidization treatment to obtain the conductive polyimide film. This application utilizes the ion exchange reaction and subsequent thermal curing process to reduce silver ions on the film surface, forming a silver-plated layer with excellent adhesion and conductivity. This material exhibits excellent reliability during use; even if the surface silver-plated film partially peels off due to wear, the conductive network built by the rod-shaped silver powder at the bottom can still serve as a backup conductive path, significantly improving its long-term stability in practical applications.

The invention relates to a composite catalyst and a preparation method thereof. The composite catalyst can be used for promoting long-chain alpha-olefin and a synthesis gas raw material to be subjected to continuous hydroformylation-hydrogenation reaction in one step to obtain a high-carbon alcohol product. Derived cobalt and graphite-phase carbon nitride in different proportions are compounded, the electronic effect is regulated and controlled, a high-dispersion and high-activity catalytic center is formed, and the composition of a product is effectively changed. The scheme provided by the invention has the advantages of simple preparation, controllable product, high alcohol selectivity and the like, and has a large-scale application and popularization prospect.

The invention relates to an improved inherent strain loading method based on a partition thought, which comprises the following steps of: performing clustering partition processing on extracted inherent strain values which are non-uniformly distributed along a scanning path to obtain a set of different inherent strain classes of components of a small-scale thermal structure standard model under specific process parameters; the result is an inherent strain clustering analysis result of the scale model; partitioning the to-be-printed structure on the basis of the inherent strain clustering analysis result of the small-scale model; grid division is carried out on the to-be-printed structure, the center-of-mass coordinates of all units are obtained, and partitions to which the units belong are judged according to the center-of-mass coordinates of the Changing the thermal expansion coefficient of each characteristic region unit of the to-be-printed structure according to the partitioning result of the to-be-printed structure so as to complete the endowing of different inherent strain classes; and according to an actual layer-by-layer printing strategy, calculation of a layer-by-layer partition inherent strain method is completed, deformation and stress distribution of the to-be-printed structure is obtained, and prediction of residual deformation and stress of the to-be-printed structure is achieved.

The invention provides an automobile rear cover lock fatigue strength test bench and a test method. The test bench comprises a height adjusting part, a moving part, a lifting part and a pre-tightening part. The moving part is used for simulating falling of the automobile rear cover and can drive the rear cover lock to freely fall after being lifted to the required height position. The height adjusting part is used for fixing the moving part, and the fixing height is adjustable. The lifting part is used for lifting the moving part so that the moving part can be fixed to the height adjusting part. The pre-tightening part is used for simulating upward acting force generated by the rear cover sealing strip and the buffer block on the rear cover. According to the test bench and the test method, the impact process of the rear cover lock in the trunk rear cover opening and closing process of a user in daily life is simplified, and the installation state of the rear cover lock, the impact speed and the pre-tightening force brought by the sealing strip and the buffer block can all reach the vehicle actual measurement value; impact on the rear cover lock in the trunk rear cover opening and closing process can be well restored, and the test bed can be applied to fatigue strength detection of rear cover locks of different vehicle types.