116 results about "Model material" patented technology

The invention belongs to the technical field of composite material design, and discloses a polymer composite material design method based on LLM knowledge database construction and reasoning optimization, and the method comprises the following steps: S1, target performance setting; s2, constructing a knowledge database; s3, constructing a reverse design model; s4, constructing a performance verification module; and S5, performing multi-round test-verification design loop optimization. According to the method, an intelligent design method integrating target setting, semantic knowledge database construction, a design assistant, a performance verifier, a prompt engineering module and a language model material knowledge system is provided, closed-loop reasoning and feedback of structure-mechanism-performance are achieved through multiple rounds of DA-VM collaborative optimization, and the design efficiency is improved. The method has the advantages of high design efficiency, strong structure generation rationality, accurate performance prediction, knowledge evolvable and the like, and is suitable for intelligent rapid development of the high thermal conductivity-wave absorbing-shielding-mechanical integrated functional polymer composite material.

The invention belongs to the technical field of computer simulation, and particularly discloses a method, a system and equipment for predicting the fatigue life of a composite material patching and repairing structure. The prediction method comprises the following steps: establishing a composite laminated plate fatigue damage analysis method in combination with an improved Hashin criterion, finite element analysis, a strength degradation model, a rigidity degradation model and a Camanho material parameter degradation model; fatigue life prediction analysis is carried out on the non-porous laminated plate and the porous laminated plate by using the method; and comparing a prediction result with a test result, and verifying the effectiveness of the established composite material laminated plate fatigue damage analysis method. On the basis, a composite material fatigue damage analysis method and a cohesion unit are combined, and a repair structure fatigue life prediction model is established. The fatigue life prediction method for the repair structure is provided by taking the composite material patching and repairing structure as a research object, and has certain engineering practical significance and better practical value.

The invention discloses a shield segment heterogeneous modeling crack and limit simulation method. The method comprises the following steps: constructing an aggregate three-dimensional model database; generating a heterogeneous aggregate accumulation model; establishing a concrete shield segment three-dimensional model; defining a model material constitutive relation and a damage criterion; setting an equivalent field staged loading working condition and a boundary condition; grid division and nonlinear static simulation solution are carried out; and constructing a crack response monitoring and output module, and executing judgment of a structure limit state. High-precision construction and multi-stage loading simulation of a shield segment model are realized by reconstructing a concrete microstructure and steel bar arrangement information and combining a field loading force value and a boundary condition; and a nonlinear material constitutive and damage evolution criterion is introduced, the whole-process response of the crack is captured, a limit state criterion is set, and automatic identification and damage form judgment of the bending resistance limit load are completed. According to the method, a technical path capable of being popularized is provided for shield segment structure performance evaluation, ultimate bearing prediction and a crack control strategy.

The embodiment of the invention discloses a spectrum-based substance mixing degree detection method and device. The intelligent generated data processing method comprises the following steps: acquiring first hyperspectral data of a to-be-modeled material in a stirring process state and final-state hyperspectral data of the to-be-modeled material in a uniform stirring state; establishing a final state spectrum difference curve, an intra-group spectrum difference curve and a large particulate matter distribution curve; determining a multi-dimensional mixing degree judgment index according to the final-state spectrum difference curve, the intra-group spectrum difference curve and the large particulate matter distribution curve; when it is detected that the to-be-detected material flows into the detection pipeline and is located in the to-be-detected area, starting a hyperspectral acquisition device to acquire a plurality of second hyperspectral data of the to-be-detected material; when it is detected that the multiple second hyperspectral data meet the preset validity condition, the multi-dimensional mixing degree judgment index and the preset batch qualification condition, it is judged that the to-be-detected material reaches the uniform mixing state. According to the embodiment of the invention, accurate detection of the substance mixing uniformity is realized.

The invention discloses a thin-wall part based on finite elements and a manufacturing method of the thin-wall part. The manufacturing method comprises the steps that a three-dimensional model of a part to be formed is established; performing grid division on the three-dimensional model to obtain a three-dimensional grid model; the material type, material parameters and 3D printing process parameters of the to-be-formed part are determined; performing heat treatment simulation according to the three-dimensional grid model and the material type to obtain a heat treatment simulation result; obtaining a reversible deformation compensation model according to a heat treatment simulation result; compensating the reversible deformation compensation model according to the compensation scale factor to obtain a compensated model; repairing the compensated model according to the strain scale factor and the anisotropic strain coefficient to obtain a repaired model; and 3D printing is conducted according to the repaired model, the material type and the 3D printing process parameters. The thin-wall part is manufactured through 3D printing, deformation compensation can be conducted in the modeling process, deformation is reduced, and meanwhile it is guaranteed that the size of the thin-wall part obtained through 3D printing is not changed.

The invention relates to the technical field of engineering monitoring, in particular to a bridge structure state monitoring method and system based on digital twinning, and the method comprises the steps: building a multi-source monitoring data matrix based on a data timestamp; establishing a geometric model, a material attribute model and a load model of a bridge structure based on the multi-source monitoring data matrix, and fusing to obtain a bridge digital twin initial model; and carrying out structural mechanical analysis based on the bridge digital twin initial model to obtain stress distribution data of each region of the bridge. Through real-time acquisition and analysis of multi-source monitoring data, the method can dynamically evaluate the structural state of the bridge and timely identify potential safety hazards, so that the safety of the bridge is improved; and through calibration of the initial model, the obtained digital twin precise model reflects the real state of the bridge, and a more accurate data basis is provided for subsequent structural analysis.

Embodiments of the invention can accommodate multiple variations and goals of impressions, including but not limited to dental and orthodontic models. To adapt embodiments of the invention for multiple purposes, and to standardize the process, embodiments include a housing that allows for impressions to be suspended and / or sealed in the housing so that modelling material can pour up the impression, form a model base or some other type of design, and / or articulate the models if desired, without the need for or with reduced need for trimming and substantial reduction of time and use of modelling material (hereafter “MM”) like gypsum, stone, plaster, resin, etc. Embodiments allow models to be created and formed and articulated if desired. Professionals may pour up impressions, form base models, and, optionally, articulate models, allowing less waste, material, and use of time than traditional and current methods.

The invention discloses a virtual model processing method and device, electronic equipment and a storage medium. The method comprises the steps that at least two model materials of a to-be-processed virtual model are acquired; obtaining at least one type of replacement parameters corresponding to the model material through at least one target function node of a target game engine; and based on the replacement parameters and the replacement maps corresponding to the model materials, performing material superposition processing to obtain a processed target model material of the virtual model. By setting a plurality of target function nodes, a real mixed model material with an undulating replacement effect can be created, the authenticity and the simulation effect of the appearance effect of the obtained virtual model are improved, programming of the manufacturing steps of the model material with the replacement effect and the mixed effect is realized, and the manufacturing efficiency of the model material is improved. A real fluctuating complex appearance effect can be rapidly manufactured, and the virtual model manufacturing efficiency is improved.

The invention discloses a vibration table model box for simulating a discontinuous liquefied stratum and a test method, the model box comprises a model box body connected to a vibration table, and a sliding system, a drainage system and a partition fixing system which are arranged on the model box body, and the model box body is formed by encircling a plurality of groups of frames and a frame bottom plate; the internal space of the model box body is divided through the horizontal direction and vertical movement of the partition fixing system, the model box body is filled with liquefied soil foundation model materials in a layered mode according to the division position, the position of a discontinuous fault plane can be flexibly controlled, and then a discontinuous liquefied formation test is completed. According to the model box, through the combination of a plurality of groups of frames, a sliding system, a drainage system and an interval fixing system, accurate simulation of a discontinuous liquefied stratum is realized, and the test requirements of an earthquake response test and an anti-liquefaction test of an underground structure under the condition of the discontinuous liquefied stratum can be met; and deep research and understanding of liquefied formation characteristics in scientific research and engineering fields are facilitated.

The invention discloses a mining space gangue grouting filling diffusion simulation method based on 3D printing, and belongs to the technical field of grouting filling. Combining mining space void structure characteristics and fracture development laws, determining property requirements of similar model materials according to 3D printing technical characteristics of the mining space, preparing gangue filling slurry in proportion based on laboratory results after the materials are selected, and performing a grouting test after the model is printed and air-dried and formed, and then the model completing grouting is subjected to slice analysis, and according to the dyeing condition of grouting in slices, the coal mining space gangue grouting diffusion route, the diffusion form and the relation between the grout injection amount and the diffusion distance are analyzed. The method is clear in logic and easy to operate, the flowing condition of the gangue slurry in the mining space can be predicated, gangue grouting filling design can be guided, and a theoretical basis is provided for reducing mining damage of filling engineering.

Modeling material formulations usable in additive manufacturing of a denture structure, and additive manufacturing of denture structures employing same are provided. The modeling material formulations and the additive manufacturing parameters provide denture structures that exhibit mechanical, physical and biocompatibility properties that meet the requirements of the acceptable standards.

The present invention proposes a method for modeling a bulk cargo gantry crane cabin and materials in the cabin based on 3D laser radar, wherein a first radar is installed on the gantry crane revolving body, and a second radar with a self-stabilizing device is installed on the head of the gantry crane boom elephant trunk beam; multiple coordinate systems are established, including the gantry crane base coordinate system, the gantry crane revolving body coordinate system, the first radar coordinate system and the second radar coordinate system; the coordinate transformation matrix of the two radars in the gantry crane revolving body coordinate system is determined, thereby obtaining the positions of the two radars on the revolving body; the two radars are scanned according to the operation instructions, and the first initial point cloud and the second initial point cloud are obtained and registered, thereby obtaining the transformation matrix T 12 , and then correct the second initial point cloud, merge the first initial point cloud and the corrected second initial point cloud to obtain the final point cloud. The present invention uses a 3D laser radar with better scanning effect, improves the point cloud registration method, and realizes efficient and accurate scanning modeling that is difficult to perform using a simple scanning device.

The invention relates to the field of material testing, in particular to a sealing performance pressure testing method based on an artificial chamber test model, which comprises the following steps: S1, model detection; s2, model analysis; s3, pressure detection; s4, carrying out pressure maintaining test; s5, performing pressure reduction detection; s6, leakage detection; according to the method, the qualification degree of the artificial chamber test model is obtained according to the maximum compressive strength and the durability of the model material and the integrity degree of the artificial chamber test model and fed back, and the artificial chamber test model is evaluated according to the sealing performance, the pressure maintaining sealing performance, the deformation degree and the leakage degree evaluation coefficient of the artificial chamber test model. According to the method, the sealing performance evaluation index of the artificial chamber test model is obtained through analysis and fed back, the quality and performance of the artificial chamber test model can be comprehensively and systematically evaluated, the sealing effect of the artificial chamber in a specific environment is better guaranteed, and adverse effects caused by leakage and other problems are prevented.

The application relates to the technical field of image processing, and provides a model material replacement method and device for a design drawing. The method comprises the following steps: determining a target model from each model of a design drawing according to a received material selection instruction; obtaining a target material map corresponding to the material selection instruction from each material map of the target model; and merging the target material map, a light map, a diffuse reflection map and a reflection refraction map of the design drawing to obtain a model image of the target model in the design drawing; wherein the design drawing is an image obtained through rendering; the light map, the diffuse reflection map and the reflection refraction map are each layer obtained after the design drawing is rendered. The model material replacement method for the design drawing provided by the application can reduce the calculation amount of the model in the design drawing when the material is replaced, and reduce the resources consumed when the model material is replaced.

The invention provides a data processing method and device, and the method comprises the steps: receiving a rendering instruction submitted for an initial virtual scene, and determining a model material and a model grid corresponding to the initial virtual scene in response to the rendering instruction. And determining material data associated with the model material in the data cache region according to the material data index, and determining grid data corresponding to the model grid according to the grid data index, thereby respectively realizing material data reading and grid data reading. According to the technical scheme, the batch rendering task is constructed based on the material data and the grid data, the target virtual scene corresponding to the initial virtual scene is rendered by executing the batch rendering task, synchronous rendering of the initial virtual scene in the two dimensions of the grid and the material is achieved, batch rendering of the material and the grid is achieved, and the rendering performance is improved.

A three-dimensional modeling device and a method for manufacturing a three-dimensional object are capable of heating layers of modeling material stacked in a modeling area through simple control, and stacking a new layer of modeling material on the heated layer of modeling material to form a three-dimensional object. The three-dimensional modeling device comprises: a plasticizing unit that plasticizes the material to generate modeling material; a stage for stacking the modeling material; a nozzle having a nozzle opening that ejects the modeling material from the nozzle opening toward the modeling area on the stage; a moving mechanism that can change the relative position of the nozzle and the stage; and a heating unit having a heater and a heating element that heats the modeling material stacked in the modeling area using heat supplied from the heater. The nozzle opening is located between the stage and the heating unit in the stacking direction of the modeling material, and the heating unit is configured to change its relative position with the stage together with the nozzle, and the heating element covers at least the modeling area when viewed along the stacking direction.

To appropriately perform modeling of a colored modeling object by using an optical modeling method.SOLUTION: A modeling apparatus 10 for performing modeling by a photolithography method, comprises: a tank 12, which is a modeling material storage tank that stores a photocurable modeling material; a table 14 that supports an upper surface of a modeling object being modeled; a table drive unit 22 that moves the table 14; a light irradiation unit 16 that irradiates the table 14 with light from above to cure the modeling material; and an inkjet head 102, which is a head for a coloring material that ejects an ink which is the coloring material. The inkjet head 102 ejects the ink onto the modeling object being modeled, thereby coloring the modeling object.SELECTED DRAWING: Figure 1

The invention relates to the field of physical model test devices, and particularly discloses a full-process automatic multi-field coupling physical simulation test system which comprises a supporting seat, a machine body frame, a front counter-force beam plate, a first lifting mechanism and a position moving mechanism. The supporting seat is arranged in a ground storage groove of a detection place, the machine body frame is fixedly connected to the upper surface of the supporting seat, the front portion of the machine body frame is in an opening shape, the front counter-force beam plate covers the opening in the front portion of the machine body frame, and the front counter-force beam plate is connected with the first lifting mechanism; and the front counter-force beam plate is positioned above the storage tank. The position moving mechanism is located on the bottom face in the machine body frame, and the bottom face is flush with the ground of the detection site. According to the device, laying of the model material before the test and removing of the model material after the test can be achieved, complex manual labor is omitted, operation is more convenient and efficient, and the accuracy of the test result is effectively improved.

The application discloses a large-scale physical simulation test similar model material recycling system, which comprises a combined rock breaking device, a microwave processing device, a pneumatic conveying device and a main body counterforce frame; the combined rock breaking device is arranged on the main body counterforce frame; the microwave processing device is communicated with the combined rock breaking device through a first material conveying pipeline; the pneumatic conveying device comprises a rotary feeder, a Roots blower, an air induction fan, a dust remover, a coarse aggregate bin, a fine aggregate bin and a micro-fine powder bin; the dust remover and the air induction fan are connected to the coarse aggregate bin, the fine aggregate bin and the micro-fine powder bin; and a large-scale physical simulation test similar model material recycling method is also disclosed.The application can greatly improve the rock breaking efficiency and the material recycling rate, realizes closed dust-free conveying of the material, improves the automation and mechanization degree of the recycling system, reduces the labor intensity of the personnel, improves the laboratory environment, and reliably, simply, quickly and efficiently recycles and reuses the physical similar model material.

A method of testing adherence level of a substance to a fabric, comprises: printing a stack of layers of the substance on the fabric, and printing a modeling material onto the stack of substance layers to form two gap-separated stacks of modeling material layers. The method also comprises bending the fabric at the gap so as to detach at least one of the stacks of modeling material layers from the fabric at a detachment point bordering the gap.

The application relates to a design method of a nonlinear similar scale test model of replaceable material, which comprises the following steps: S1, determining an actual ship stiffened plate structure design original model; S2, determining the density rho ps , yield stress sigma yps , elastic modulus E ps and all geometric properties of the stiffened plate original model, and determining a geometric scale factor beta; S3, determining material properties of a test design model through a design criterion I, and calculating geometric properties of the test design model by using a design criterion II; S4, determining the material density rho ps , rho ts and yield stress sigma yps , sigma yts of the stiffened plate original model and the test design model; S5, calculating a density scale factor alpha ρ through a design criterion III; S6, calculating a time scale factor h by combining the density scale factor alpha ρ through a design criterion IV; and S7, predicting the ultimate load and displacement of the original model by using a load and displacement prediction formula. The method is simple and convenient to use, does not need to derive many parameters, and has high engineering application value.

A method for physically reconstructing a body part using multi-material additive manufacturing includes receiving image data of the body part in the form of arrays of voxels, each array of voxels representing image data pertaining to cross-section of the body part, translating the image data in the arrays of voxels to printable bitmap images representing combinations of modeling materials for reconstructing the body part, and dispensing the combinations of modeling materials responsive to the bitmap images in a layerwise manner.

The invention belongs to the field of seismic physical model materials, and relates to a seismic physical model material with anisotropic characteristics and a preparation method and application thereof. The seismic physical model material with the anisotropic characteristic comprises the following components in parts by weight: 10-100 parts by weight of wood sheet; 50 to 240 parts by weight of epoxy resin; and 5-40 parts by weight of a curing agent. The seismic physical model material has the following effects: (1) the longitudinal wave velocity difference range of the seismic physical model material with the anisotropic characteristic in the vertical direction and the horizontal direction can reach 50m / s to 1500m / s, and the seismic physical model material with the anisotropic characteristic has the remarkable anisotropic characteristic; and (2) the change range of the longitudinal wave velocity anisotropy parameter epsilon of the seismic physical model material with the anisotropy characteristic is 0.021-0.323, which is more similar to the actual stratum condition, and the physical simulation of most anisotropic stratums can be met.

A three-dimensional modeling apparatus and a method of manufacturing a three-dimensional modeled object reduce the likelihood that waste material adhering to a cleaning mechanism will re-adhere to a head and affect modeling accuracy. The three-dimensional modeling apparatus includes an ejection section that ejects modeling material from a nozzle, a table on which modeling material is layered, a drive section that changes the relative positions of the ejection section and the table, a cleaning mechanism that includes a brush and a squeegee, and a control section. The control section performs a cleaning operation in which the nozzle is reciprocated in a manner that causes the nozzle to cross the cleaning mechanism multiple times, thereby causing at least one of the brush and the squeegee to contact the nozzle. The control section causes the nozzle to reciprocate in a manner that causes the nozzle to contact different positions of the brush or the squeegee during the cleaning operation. The temperature of the nozzle during the cleaning operation is lower than the temperature of the nozzle when the layers are layered.

The application provides a step-by-step decomposition-space mapping three-dimensional material point material parameter random field generation method, and belongs to the technical field of water conservancy and hydropower. First, a three-dimensional geometric model of a structure is established according to engineering geological data, high-precision mesh division is carried out, each mesh is converted into a material point carrying mass and volume, and a material point model is obtained. Second, a background mesh element is determined, and a background mesh covering the space occupied by the entire structure is generated. Third, a correlation function reflecting the material parameter properties is selected, a step-by-step decomposition method is used, and a material parameter random field on the background mesh element is generated. Finally, the value of the material parameter of the material point model is determined through a space mapping technology, and a three-dimensional material point material parameter random field is generated. The application is based on the material point method, and realizes the generation of a three-dimensional random field of a geotechnical engineering material parameter through the joint application of a step-by-step decomposition-space mapping technology, thereby providing technical support for the simulation of large deformation of a geotechnical engineering considering spatial variability.

The invention relates to a modelling material, at least consisting of a binder which is present as plastisol and at least one filler, as well as optionally further additives, wherein the plastisol is substantially composed of PVC and plasticiser, characterised in that the at least one filler is an organic filler, the at least one organic filler is in the form of flowers and / or petals, and the flowers and / or petals in the modelling material have a longitudinal extent of 1 to 7 mm.

The invention discloses a BIM-based just-in modeling material list generation method, system and device and a medium, and relates to the technical field of engineering quantity uptake, the method comprises the steps that a modeling material list request for any independent building is acquired, a BIM three-dimensional diagram of the independent building is displayed based on the modeling material list request, and the BIM three-dimensional diagram comprises all floor information of the independent building; and obtaining modeling size information drawn by a user in different floors based on the BIM three-dimensional diagram, performing statistics on materials of the same category, and generating a modeling material list of the independent building. According to the method, statistics is performed on the same type of materials based on the BIM model, the use amount of each type of materials can be accurately calculated, and material waste or insufficiency caused by manual statistics errors is avoided.

The present invention provides a three-dimensional multiple complex fault geological modeling method suitable for finite element numerical simulation. The three-dimensional multiple complex fault geological modeling method suitable for finite element numerical simulation includes the following steps: faults are modeled separately, and their corresponding geometric models are constructed using the point cloud data of each fault, including processing multiple triangular facets into whole facets, and optimizing the geometric topological structure of the whole facets; using the crust1.0 crustal model to establish a lithospheric structure layering model, and fusing the fault model with the crust1.0 stratum model to construct a geological model of multiple complex faults. The three-dimensional multiple complex fault geological modeling method suitable for finite element numerical simulation provided by the present invention has the advantages of fully considering the geometric information of a single fault and the relationship between multiple faults during the modeling process, reducing the errors in model size and position brought about during the modeling process, and fully considering the spatial differences of model materials.

The utility model discloses an operating platform for BIM (Building Information Modeling), which belongs to the field of operating platforms and is characterized in that an open collecting bin is arranged at the upper end of a collecting box, and solid modeling materials are stored through the open collecting bin; a lighting system mounting bin is formed in the entity modeling table, mounting hole positions are formed in the upper end and the lower end of the entity modeling table, a lighting system controller is mounted on the inner wall of the collecting box, and a lighting system in the lighting system mounting bin is controlled through the lighting system controller so that lighting of entity modeling objects on the surface of the entity modeling table can be achieved. And the modeling computer is fixed at the upper end of the table body, so that an operator can conveniently and efficiently carry out BIM modeling. Seamless connection of virtuality and entity modeling is achieved through the entity modeling table design, and the working efficiency is improved. And the lighting system in the platform and the controller provide sufficient illumination for modeling, so that the modeling precision can be improved. The design of the collecting box facilitates storage and management of modeling materials, convenient control is achieved through an inner wall lighting system controller, and operation convenience and flexibility are improved.

The invention discloses a model dyeing method and device, a storage medium, equipment and a program product, and the method comprises the steps: obtaining the updated real-time dyeing parameters of a first model material in response to the dyeing parameter change of the first model material, and enabling the first model material to correspond to a first model; according to the dyeing parameter binding relation between the first model material and the second model material, the real-time dyeing parameter is synchronized to the second model material, the second model material corresponds to a second model, and the first model and the second model are two models of different dimensions of the same virtual object; and performing real-time dyeing processing on the second model based on the synchronized real-time dyeing parameters. According to the scheme provided by the embodiment of the invention, the real-time, accurate and consistent dyeing effect of the same virtual object under different dimension model representation forms is realized.