26 results about "Metamodeling" patented technology

The invention belongs to the field of artificial intelligence and industrial finite element analysis software, and particularly relates to an LLM agent-based Abaqus finite element modeling code generation method and device. According to the method, high-precision and high-reliability finite element analysis script generation is realized through construction of an instruction-code pair database, semantic retrieval and instruction reasoning, code generation and verification and lightweight model deployment. Comprising the following steps: constructing an instruction-code pair database; performing semantic retrieval and instruction reasoning; code generation and verification; and lightweight model deployment. By using the method, the accuracy and the reliability of finite element analysis script generation can be effectively improved, and the threshold and the cost of an engineering simulation task are remarkably reduced. The industrial finite element analysis software script generation method based on the large model agent can be widely applied to finite element analysis tasks in the fields of aerospace, machine manufacturing and the like.

The invention relates to a power grid project basic design system and method based on a general function module. The system comprises a general editing module, a basic primitive modeling module, a parameterized component module, a model integration module and a link reference module. The universal editing module is used for freely adjusting, placing and combining the selected primitives; the basic primitive modeling module is used for providing various basic primitives and completing splicing among the primitives through surface-based arrangement and parameter change; the parameterized component module is used for creating parameterized components in a UI interaction mode; the model integration module is used for importing a public data format through an interface to carry out modeling and design operation; and the link reference module is used for integrating the local file into the current model in the system through the model link reference interface to serve as view reference. Compared with the prior art, the method has the advantages that the technical architecture and functional system design of the design foundation platform is completed under the guidance of the power grid engineering design requirements, and the efficiency is improved.

The invention provides a fastener multi-load state simulation finite element modeling method with one-way compression inhibition. Comprising the following steps: 1) designing a multi-unit collaborative modeling structure; 2) designing an asymmetric load transfer mechanism; and 3) designing a calculation efficiency optimization strategy. The technical problems that in traditional entity unit modeling, computing resource consumption is large, force transmission path simulation is inaccurate, and fastener connection modeling is difficult are solved.

The invention belongs to the technical field of oil and gas field development engineering, and particularly relates to a conglomerate reservoir horizontal well perforation completion discrete element modeling method. The method comprises the following steps: extracting a conglomerate contour of a target area; taking the conglomerate contour of the extracted target area as a constraint boundary, generating a plurality of discrete small ball particles to fill the interior of the conglomerate contour and the residual matrix area, and further generating a conglomerate discrete element model; the method comprises the following steps: acquiring field perforation well completion data of a horizontal well in a target area, and converting the field perforation data to generate a horizontal well shaft wall unit containing perforations; the field perforation completion data at least comprise perforation depth, perforation aperture, perforation density, wellbore diameter and wellbore length parameters. Through the conglomerate reservoir perforation horizontal well fracturing simulation technology, the limitation of a traditional homogeneous model is broken through, and accurate reduction of the heterogeneity of a real reservoir is achieved.

The invention relates to the technical field of combination of bridge building finite element modeling and an artificial intelligence large model, in particular to a finite element modeling error diagnosis and automatic correction method and system. The method comprises the following steps: constructing a pre-training finite element large model and a structured finite element error corpus; receiving finite element modeling error reporting information input by a user, and judging an error type corresponding to the error reporting information based on the pre-trained finite element large model and the structured finite element error corpus; searching a matched candidate repair scheme in a structured finite element error corpus according to the error type; integrating and optimizing the candidate repair schemes through a pre-trained finite element large model to generate a target correction scheme; and outputting the target correction scheme to a user side to complete diagnosis and automatic correction of finite element modeling errors. The problems that finite element error reporting information is obscure and difficult to understand, and engineers are difficult to position quickly are solved.

The application discloses a kind of production line unit modeling methods for digital twin monitoring, comprising the following steps: S1, establish production line scene data architecture;S2, establish warehouse production line system requirement diagram and monitoring application requirement diagram;S3, establish warehouse production line structure diagram, equipment structure diagram, value definition diagram, establish warehouse production line activity diagram, equipment activity diagram, equipment mathematical model;S4, establish the object node and variable of OPC UA information model;S5, establish equipment three-dimensional model in Solidwork, import three-dimensional simulation software VC in intermediate format STP;S6, define the operation flow of production line, the operation constraint relationship between each equipment;Define the independent and dependent relationship between each motion structure;S7, according to equipment mathematical model, establish corresponding data structure, determine the data source to collect data and update OPC UA information model.The application has good visualization and interactivity, and production line state feedback is timely, can effectively help manager to understand production line state, improve management efficiency.

This invention relates to a finite element model assembly method and system based on the DMIG principle. The method includes: Step S1: Performing finite element modeling on the original structural model according to the structural composition and analysis requirements, and extracting specified component models; Step S2: Remodeling the extracted component models according to functional needs to obtain reconstructed component models; Step S3: Assembling and analyzing the reconstructed component models with the remaining structural model based on the DMIG principle. The method provided by this invention improves the accuracy and efficiency of local component analysis.

The application provides an interactive component assembly module design method, a simulation software construction method and device, and the interactive component assembly module design method comprises the following steps: constructing a data structure class diagram describing the correlation relationship between a geometric component object and a component instance object; determining the method interface required to be provided by the object in the interactive diagram when the component instance object realizes the component assembly function based on the data structure class diagram, and designing an interactive component assembly module based on the interactive diagram and the method interface. The data structure class diagram and the interactive diagram provided by the application meet the cross-module data correlation requirements of the geometric modeling, component assembly and meshing and other modules in the finite element modeling process, realize the assembly function development based on the geometric component object, and effectively improve the expansibility and maintainability of the designed interactive component assembly module.

The application belongs to the field of finite element modeling, and particularly relates to a finite element modeling method considering multi-scale characteristics of an assembly interface, structural data of a rough surface is collected, a rough surface height matrix is obtained after convolution coefficient calculation; an ideal surface corresponding to the rough surface is determined, and geometric information of the ideal surface is obtained; the rough surface height matrix is modeled and superimposed on the ideal surface to obtain superimposed rough surface information; finite element modeling is performed on different superimposed rough surface information of the multi-scale surface to obtain a finite element model containing multi-scale characteristics of the assembly interface. The technical problem that existing finite element modeling software and tools cannot directly realize multi-scale modeling of the assembly interface and can only establish a model based on ideal product size, resulting in an ideal smooth contact state of the assembly interface, is solved, and the multi-scale characteristics of the assembly interface are successfully included in the product finite element model, so that the model can contain multi-scale geometric information of the actual surface of the part.

The invention relates to an automatic modeling method for a finite element model of a shock absorber based on Hypermesh secondary development. The automatic modeling method comprises the following steps: inputting a geometric model; automatically extracting the middle surface of the thin-wall part; a thin-wall part 2D mesh and a solid part 3D mesh are automatically divided; batch creation of Rbe1, Rbe2 and Rbe3, batch creation of welding spots and welding seams, batch creation of contact pairs, and batch creation of working condition stress and control cards; and submitting calculation and automatically exporting a simulation report. According to the method, secondary development is carried out by applying TCL and TK languages on the basis of the Hypermesh environment, a solution is provided for solving the difficult problems that modeling of a finite element model of the shock absorber is tedious and the manual operation error rate is high, when finite element modeling is carried out on the shock absorber, tedious manual operation can be greatly reduced by adopting the method, the working efficiency is improved, and the method is suitable for large-scale popularization and application. Meanwhile, the labor cost can be remarkably reduced, the modeling speed is increased, and the research and development period is shortened.

The application discloses a single fulcrum flexible wall nozzle profile curve design method. The method comprises the following steps: obtaining design parameters and a target profile curve of a single fulcrum flexible wall nozzle; determining initial values of support rod parameters according to the design parameters; writing a profile curve calculation program by using MAPLE software, inputting the design parameters and the initial values of the support rod parameters into the profile curve calculation program, and calculating the profile curve; subtracting the target profile curve from the profile curve to obtain a profile curve deviation; when the profile curve deviation is greater than a maximum profile curve deviation, adjusting the numerical values of the support rod parameters according to the profile curve deviation, repeatedly performing iterative calculation by using the MAPLE software, and obtaining the profile curve deviation between the profile curve and the target profile curve being less than the maximum profile curve deviation until the profile curve is obtained. The application does not use a finite element modeling simulation process, has the advantage of short design period, and guarantees the solving precision through elliptic integral solving derived according to the Euler-Bernoulli beam large deformation theory.

The invention relates to the technical field of tire finite element simulation design, in particular to a method, a system, a medium and a software product for calculating contribution of a tire part to radial rigidity. The method comprises the steps that a two-dimensional tire finite element model is established, inflation pressure is applied, a three-dimensional model is generated, a load is applied, and the radial rigidity of a complete tire is calculated; the Young modulus of the target part is reduced to 0.01%-5% of a design value, simulation is repeated, and rigidity after modification is calculated; and calculating a rigid contribution value and a contribution rate of the component through a difference value between the two values. The system comprises a finite element modeling module, a simulation module, an attribute adjustment module and a rigidity analysis module. On the premise of ensuring the continuity of a simulation structure and the consistency of working conditions, the method can accurately peel off the contribution of the component, is suitable for different tire structures, and has the advantages of high precision, high universality, low cost and the like.

The invention discloses a mechanical system dynamics modeling method, and relates to the technical field of mechanical dynamics, and the method comprises the steps: decomposing a target mechanical system into a set of a plurality of structural components; performing finite element modeling on each structural component to obtain a finite element model of each structural component; performing dynamic order reduction processing on the finite element model to obtain a polycondensation model of each structural component; integrating and coupling the polycondensation model into a system body dynamic model based on the motion parameters of each motion axis of the target mechanical system and the system assembly relationship; and coupling the dynamical model of the end effector with the system body dynamical model to obtain a target system dynamical model. The whole machine is decomposed into components, order reduction processing is carried out on the components respectively, dynamic integration is carried out according to real-time motion parameters, real dynamic behaviors of a mechanical system in different working spaces are accurately reflected, and limitation of traditional static modeling is overcome.

The invention provides a plate spinning solid shell unit modeling and simulation visualization method based on ABAQUS, and belongs to the field of spinning forming numerical simulation. The method comprises the following steps of: constructing a calculation module by using a Fortran language and packaging the calculation module into a VUEL subprogram which can be called by ABAQUS; a subprogram VUSDFLD used for redefining variables on the integration points is written in the Fortran language; a three-dimensional finite element model of plate spinning is established in the ABAQUS; and calling an ABAQUS / Explicit solver and a subprogram to perform plate spinning simulation to obtain an ODB result file, constructing a result file reconstruction tool based on a Python secondary development technology of the ABAQUS, extracting node data of a calculation component and unit integral point data of a storage component, and creating a new ODB file for visualization. The method solves the problem that the simulation result of the user-defined entity shell unit (such as VUEL) in the ABAQUS cannot be directly written into the ODB file, so that post-processing visualization is difficult.

This invention discloses a Python-based parametric modeling method for wind turbine blades, relating to the field of finite element analysis technology. By combining Python with an Abaqus scripting interface, this invention automates the entire process of geometric modeling, model segmentation, mesh generation, material property assignment, assembly arraying, and contact and boundary condition setting for the blade root segment, blade root bolts, flanges, bearings, hub, and hub bolts. The final result is the generation of a semi-model (CAE and INP) file of the blade root. This invention significantly reduces the finite element modeling time for blade roots, decreasing the modeling efficiency from tens of hours using traditional manual methods to minutes. It effectively reduces human error and provides a simple and intuitive interactive interface, offering a reliable technical means for the rapid iterative design and analysis of blade root structures.

The invention discloses a curvature-guided momentum adaptive trajectory decision-making method based on multi-path time sequence fusion, and belongs to the technical field of intelligent navigation and deep reinforcement learning. The sequential memory modeling captures track continuity dependence, and a smoother and more stable motion track is generated. Modeling is carried out through the lightweight cross-scale recurrent neural unit, decision making can be carried out by considering historical trajectory information, dramatic changes of decisions at adjacent moments are avoided, and the long-term planning ability is improved. The hierarchical reward architecture decouples multi-objective optimization into a hierarchical structure with clear semantics, thereby facilitating parameter adjustment and preference customization. A user can adjust weight configuration of the task layer, the behavior layer and the risk layer according to actual requirements, and personalized trajectory optimization is achieved. A cost weight adaptive mechanism realizes high-level decision space abstraction, and the interpretability and stability of the strategy are improved. The intelligent agent realizes a high-level decision-making mode similar to a human navigation strategy by adjusting a semantic cost weight instead of directly outputting a bottom-layer control command.

The application discloses a portal bridge crane box-shaped main beam parameterized modeling and optimization design method, and belongs to the technical field of mechanical design, which comprises the following steps: realizing parameterized geometric modeling of the main beam of the crane in a three-dimensional modeling software; automatically importing a geometric model output by the three-dimensional design software into a finite element pre-processing software, and performing modeling pre-processing on the geometric model to establish a parameterized finite element simulation model of the main beam of the crane; performing pre-processing and solution calculation on the finite element simulation analysis of the main beam structure of the parameterized finite element simulation model; establishing an approximate proxy model of the parameterized finite element simulation model based on DOE analysis of the finite element; and using an optimization algorithm to perform optimization under safety and manufacturability constraints for the approximate proxy model on the basis of the parameterized finite element simulation model. Through the application, simple parameterized finite element modeling of the design of the main beam of the crane box can be realized, and the most economical lightweight crane structure size can be quickly found.

The application discloses a kind of gas-spring structure multimode vibration numerical simulation method, terminal equipment and storage medium, based on finite element modeling software and computational fluid dynamics dynamics software Fluent, using mode superposition method to decouple the multi-order vibration equation of system and compile UDF secondary development program embedded solver calculation, realize three-dimensional structure and wind flow field two-way fluid-structure coupling multimode calculation.The application can truly reflect the multimode vibration of actual three-dimensional structure.

The invention relates to the technical field of civil engineering and artificial intelligence, in particular to an automatic modeling method and system for a bridge finite element model. Comprising an interaction module, a large model cascade engine, a compiler and a modeling program language grammar error debugging module. The large model cascade engine comprises a natural language pseudo code generation and check module, a modeling program language cue word generation module and a bridge structure parameter generation module; the technical threshold of finite element modeling in the field of civil engineering is greatly reduced, modeling personnel do not need to have a firm computer programming capability, an operable finite element program and a calculation result can be quickly obtained only through input requirements, and the bridge finite element modeling efficiency is remarkably improved.

This document is a technique to train regressor(s) to predict how effective a machine learning model (MLM) would be if trained with new hyperparameters and / or a new dataset. In embodiments, for each training dataset, a computer derives values of dataset meta-features from the dataset. For each HC comprising a hyperparameter configuration of the MLM, the computer performs: configuring the MLM based on the HC, training the MLM based on the dataset, and obtaining an empirical quality score indicating how effective the trained MLM was when configured with the HC. A performance tuple is generated that contains: the HC, the values of the dataset meta-features, the empirical quality score, and for each hyperparameter configuration: the empirical quality score of the hyperparameter configuration and / or the hyperparameter configuration itself. Based on the performance tuples, a regressor is trained to predict an estimated quality score based on a given dataset and a given HC.

The invention provides a finite element modeling method for a flight simulation rotary table frame, and relates to the technical field of flight simulation rotary table simulation, and the method comprises the steps: S1, rotary table frame feature recognition and parameterization setting, S2, mixed offset shell unit modeling of the rotary table frame, S3, multi-rule equivalent modeling of a shell unit of a thin-wall structure and a reinforcing rib, and S4, model integration and application. According to the method, differentiated bias rules and multi-rule equivalence are set for the cylinder assembly, the thin wall and the reinforcing ribs respectively, the configurability of model precision and efficiency is achieved, various rules from high fidelity to high efficiency are adopted according to the design stage and the analysis target, under mechanical equivalence, the model complexity and the calculation task requirement are optimally matched, and the design efficiency is improved. And the geometric characteristics of the reinforcing ribs are subjected to relevance setting according to neutral plane normal offset parameters and a thin-wall reference plane, so that equivalent simplification of bending resistance and torsional rigidity of the reinforcing rib-thin-wall composite section is realized, an efficient simulation foundation is provided for a turntable frame, and the design efficiency of simulation driving is remarkably improved.

The invention discloses an atmospheric plasma thermal barrier coating finite element modeling method and system, and the method comprises the steps: S1, simplifying pores in a ceramic layer into circular holes based on the defect structure characteristics of an atmospheric plasma spraying coating, removing microcracks, and determining the porosity range; s2, acquiring engineering stress-strain data of the substrate layer material at the service temperature, and converting the engineering stress-strain data into real stress-strain data; s3, based on the pore simplification rule and the material data, generating a 2D geometric model containing random circular pores through a programmed script; s4, importing the pore parameters into a Python script, and dynamically constructing a finite element model; and S5, applying a Brittle Cracking criterion to the finite element model to simulate erosion failure. According to the method, complex structure defects in the ceramic layer are separated into single variables such as porosity, pore size and pore distribution, independent research and quantitative prediction are carried out, and blade erosion mechanism analysis and preparation process improvement are guided.

This invention relates to the field of volute modeling technology, and discloses a finite element modeling method, computer equipment, and storage medium for volute flow channels. The finite element modeling method for volute flow channels includes: constructing multiple typical cross-sections based on cross-sectional parameters; for straight pipe cross-sections, determining the arc edge of the straight pipe cross-section on the circumference of the straight pipe cross-section; for bent pipe cross-sections, determining the arc edge of the guide vane of the seat ring on the inner side of the bent pipe cross-section based on a preset height; determining the arc edge of the bent pipe cross-section on the long side of the arc connecting the intersections of the two seat rings based on an arc transition factor; connecting the corresponding cross-sectional intersections to construct a first curve; connecting the corresponding seat ring intersections to construct a second curve; constructing a sidewall based on adjacent first curves and the arc edge of the cross-section; constructing a seat ring surface based on adjacent second curves and the arc edge of the seat ring; and constructing a volute flow channel mesh based on the arc edge of the cross-section, the first curve, the second curve, the sidewall, and the seat ring surface. This invention can improve mesh generation efficiency.

The application discloses a structural feature extraction and model correction system fusing convolution and self-attention mechanism, relates to the field of structural engineering information technology, and introduces a convolution-self-attention fusion mechanism and a double-domain consistency constraint optimization model in the whole process of cable net structure modeling, feature extraction and parameter correction, so that the precision dynamic correction from finite element simulation data to measured response data is realized. The output of a finite element modeling subsystem is taken as a multilayer objective function, after the sensitivity principal components are extracted by a principal component screening subsystem, the system extracts local correlation features by using a convolutional neural network in the feature extraction stage, and then captures global dependence features by using a self-attention mechanism, so that the model can not only pay attention to the microscale response of a local structure, but also identify an overall dynamics mode. Compared with the traditional mode, the application introduces a disturbance consistency constraint and an adversarial training mechanism, so that the network can still maintain stable output under input disturbance.

The application discloses a stratum mechanics parameter finite element modeling method based on drilling data and a terminal device, and comprises the following steps: 1) establishing a finite element model without stratum parameters; 2) collecting drilling data in an engineering site; 3) discretizing the drilling data and giving corresponding parameters to the finite element model; 4) solving the parameters of units in non-drilling positions according to the interaction relationship between units; and 5) updating and classifying the stratum parameters in non-drilling positions and then giving the parameters to the finite element model. The application avoids problems such as grid distortion caused by directly dividing stratum geometry in the finite element model, can generate different stratum parameters in the grid-uniform finite element model according to the existing drilling data, reflects different stratum fluctuation change rules, and thus realizes finite element numerical simulation calculation of strata with inclination.