265 results about "Finite element grid" patented technology

The invention discloses a cultural relic three-dimensional dynamic scene display system based on a virtual-real fusion technology, and relates to the technical field of mixed reality, and the system comprises a data collection module which obtains original signals of a to-be-displayed cultural relic and a surrounding environment, and generates an environment feature vector and an environment fusion index; the twinborn simulation module is used for generating health state feature vectors of the cultural relics in combination with finite element grids and carrying out prediction simulation on the deterioration state of cultural relic materials; the model creating module is used for creating a three-tense model resource package and generating time axis metadata by adopting a vertex interpolation and mapping mixing technology; the story layout module is used for constructing an environment event mapping rule base, obtaining a ranked trigger event list through priority ranking, and generating a scene script sequence; according to the method, the health state and the degradation process of the cultural relics under different environmental conditions can be dynamically reflected, and three-dimensional scene display changing along with time evolution is provided.

The invention discloses a three-dimensional physical field real-time prediction method and system based on geometric deep learning and physical constraint, and relates to the technical field of computer-aided engineering and artificial intelligence. The method comprises the following steps: directly extracting native boundary representation data (B-Rep) of a three-dimensional model from a computer aided design system; constructing a heterogeneous dual graph taking a parameterized curved surface as a graph node, skipping finite element grid division, and aggregating local and global topological features by using a graph neural network; in combination with a physical information driving mechanism, a partial differential equation (PDE) residual error is introduced as a loss function for constraint training, and generalization prediction of a novel geometric structure is realized; and finally, the physical field state quantity is predicted through direct regression and is rendered in real time. An incremental reasoning mechanism based on a local topology subgraph is adopted, millisecond-level physical field real-time feedback under design modification is achieved, and the method is suitable for scheme rapid screening and trend prediction in the initial stage of design.

The invention belongs to the technical field of engineering simulation data processing, and particularly discloses a finite element grid graph structure construction method and system, a terminal and a medium. Comprising the following steps: analyzing original full-amount grid data exported by finite element simulation, segmenting unstructured grid data into a grid vertex coordinate set and a grid unit mark number set, and constructing a graph edge topological structure corresponding to a grid based on a unit mark number relationship; on the basis, loading physical field data and adopting a tolerance-based coordinate matching algorithm to realize accurate mapping of physical field labels and material attributes with grid nodes; and generating standardized finite element grid graph data which can be directly used for graph neural network processing. By means of the method, high-consistency and high-physical-reliability conversion from the finite element simulation data to the graph structure data is achieved, and the physical field modeling and simulation acceleration capacity based on graph learning is improved.

The invention relates to the technical field of bearing life calculation, in particular to a transmission bearing installation pre-tightening amount calculation method and system, and the method comprises the steps: S1, building a finite element mesh model of a transmission housing and a shaft through finite element simulation software based on predefined material attributes; the material attributes comprise elastic modulus, Poisson's ratio and thermal expansion coefficient of the transmission shell and the shaft; s2, based on the actual working condition of transmission assembly life simulation analysis, importing the finite element mesh model of the transmission shell and the shaft into a pre-constructed multi-body dynamics simulation model of the transmission shell, and establishing node connection between the finite element mesh model of the transmission shell and the shaft and a transmission part in the multi-body dynamics simulation model; s3, setting a detection object and a design variable, and adopting a preset strategy to obtain a target mapping curve of the detection object and the design variable; compared with the prior art, the optimal relation between the pre-tightening amount and the service life of the bearing can be quickly determined, so that the service life of the bearing is maximized.

The invention discloses a spherical roller bearing entity simulation method, device and equipment and a medium, and relates to the technical field of wind power generation. According to the scheme, when the finite element mesh model of the spherical roller bearing is constructed, the rollers are connected to the bearing inner ring and the bearing outer ring through the spring units, that is, traditional finite element constraint is replaced with the mode that the rollers are constrained through the spring units, and the conventional constraint limitation in finite element simulation is broken through; accurate analysis of bearing roller contact in a complete machine model is realized; after a complete machine finite element mesh model is generated based on a model of the spherical roller bearing, simulation parameters and loading parameters of the complete machine finite element mesh model are set, the simulation parameters at least comprise a working clearance between a roller and a raceway, that is, contact offset is added to simulate the existence of the radial clearance of the bearing, and the loading parameters of the complete machine finite element mesh model are set. The problem of simulation of play contact of the SRB main bearing under the working condition of high axial force is solved, and three-dimensional balance of physical authenticity, calculation efficiency and engineering applicability is achieved.

The invention provides a dam safety monitoring data analysis method and device based on space-time gradient. Constructing a space-time fusion coordinate system, discretizing a three-dimensional space coordinate of the dam into finite element grid nodes, and mapping each node to a normalized parameter space through cubic spline interpolation to form a space parameter; the method comprises the following steps: dynamically expanding monitoring data on a time axis, generating time-frequency joint representation by adopting a sliding time window and wavelet transform, and forming a high-dimensional space-time curved surface with a time-space double-continuous axis; a first-order space-time gradient field and a second-order curvature tensor are calculated based on the space-time curved surface, a finite element balance equation is combined as a regularization item, and mathematical modeling and dynamic recognition of an abnormal propagation path are achieved; and according to the characteristics of the gradient field and the curvature tensor, constructing a space-time attention mechanism, automatically focusing a high-risk area and generating a graded early warning signal. According to the invention, the abnormity identification precision and early warning timeliness can be effectively improved, the false alarm rate is reduced, and the system expansibility is enhanced.

The invention discloses an analogue simulation method for curing deformation of a large-size composite stiffened wallboard, and relates to the field of composite forming simulation, the method comprises the following steps: providing a finite element grid unit system matched with multi-physical field coupling, and supporting dynamic coupling analysis of a composite temperature field, a curing degree field and a stress deformation field; user subprograms are integrated in a time sequence in finite element simulation, and material attributes and boundary conditions can be dynamically regulated and controlled; extracting the normal deformation of the outer surface of the wallboard and eliminating an inertia offset error based on a deformation quantification algorithm of space matching optimization; the reliability of the model is verified through point cloud data mapping and full-field error distribution analysis; wherein the finite element grid unit system is matched with the curved surface contour and the variable-thickness geometrical characteristics, and a topological continuity mapping relation between the stringer and the wallboard interface is established. According to the scheme, the precision and reliability of curing deformation prediction under a complex geometric structure can be remarkably improved.

The invention belongs to the technical field of geological energy storage, and particularly provides an underground chamber surrounding rock thermal-mechanical coupling fatigue phase field simulation method and system, and the method comprises the steps: building a phase field evolution equation through a phase field fracture model and a fatigue degradation function; on the basis of the calculation model, according to the air temperature and pressure in the cavern, the Newton heat exchange law is adopted to calculate cavern wall heat exchange, and a cavern wall heat conduction equation is constructed; on the basis of the calculation model, utilizing rock mass displacement and surrounding rock strain to construct a rock mass deformation equation; performing numerical discretization on the phase field evolution equation, the cave wall heat conduction equation and the rock mass deformation equation on a finite element grid unit, and performing thermal-mechanical coupling solution on all discretized equations through an iterative method to obtain evolution results of a temperature field, a stress field, a displacement field and a crack phase field of the underground chamber surrounding rock target area. According to the method, the phase field method is applied to thermal-mechanical coupling simulation of the underground gas storage chamber surrounding rock crack propagation condition, and the authenticity of chamber crack simulation is reflected to the maximum extent.

The embodiment of the invention provides a multiphase flow simulation method and device for cooling equipment, equipment and a medium, and the method comprises the steps: obtaining a geometric structure model and input working condition parameters of to-be-simulated cooling equipment, and carrying out the data preprocessing; performing simulation pretreatment according to preset structural characteristics of the cooling equipment, the pretreated geometric structure model and the input working condition parameters to construct a multiphase flow simulation model of the to-be-simulated cooling equipment; and performing simulation calculation and post-processing by adopting the multiphase flow simulation model to obtain a simulation result. According to the embodiment of the invention, through the finite element mesh model constructed based on the geometric structure parameters and the input working condition parameters, the simulation model can be quickly and automatically established, and the simulation efficiency and accuracy are improved.

The invention relates to a multi-physical-field deformation analysis method and system based on a COMSOL platform and a particle finite element. The method comprises the steps that a physical deformation analysis model is built, and an initial finite element grid is generated; solving the control equation by using a solver of the COMSOL platform to obtain a multi-physical-field state variable; carrying out particle space position updating on finite element grid nodes according to the multi-physical field state variables, and carrying out Delou inner triangulation and boundary identification based on an updated particle point set to obtain a free boundary; reconstructing the grid based on the free boundary, and mapping the state variable of the previous grid to the new finite element grid; according to the new finite element mesh, updating boundary conditions of the physical deformation analysis model, and iteratively updating the physical deformation analysis model in a COMSOL platform; and outputting a deformation analysis result based on the final physical deformation analysis model. According to the invention, stable and high-precision numerical analysis of large-deformation and multi-field coupling processes in energy geotechnical engineering is realized.

The invention belongs to the related technical field of subtractive manufacturing, and discloses a material removal simulation and workpiece deformation prediction method based on an extended finite element simulation model and application. The method comprises the following steps: carrying out finite element mesh division on a three-dimensional model of a blank, and carrying out mesh encryption treatment on the periphery of a preset virtual crack surface, so as to obtain a plurality of mesh units; loading residual stress in the three-dimensional model of the blank, and calculating a total load vector; calculating a global stiffness matrix; solving an overall displacement free vector; and obtaining a displacement free vector of each unit according to the total displacement free vector, and applying the displacement free vector of each unit to a grid node of each unit so as to obtain coordinates of the node after deformation, thereby realizing deformation prediction. According to the invention, the problems of low calculation efficiency and poor calculation precision in deformation simulation prediction are solved.

The invention discloses a viscoelastic boundary verification method, device and equipment based on isoparametric elements and a medium, and the method comprises the steps: building a three-dimensional geometric model of a target structure according to geometric dimensions and material attributes, discretizing the three-dimensional geometric model into initial three-dimensional subunits, and then building an initial finite element mesh model; after identifying a target boundary surface to be applied with an artificial viscoelastic boundary, assigning boundary parameters to obtain each three-dimensional subunit and form a finite element model; all the three-dimensional subunits are mapped to a standard unit through equal-parameter coordinate transformation, an equivalent stiffness coefficient matrix and an equivalent damping coefficient matrix are obtained through calculation and then stacked and assembled, and an overall stiffness matrix and an overall damping matrix are formed; and calculating displacement response data based on the overall stiffness matrix and the overall damping matrix. According to the embodiment of the invention, by introducing the isoparametric coordinate transformation, the irregular boundary form can be directly processed without introducing an additional boundary unit, and the calculation requirement of an actual complex engineering model is met.

The invention discloses an element size effect elimination method for concrete structure damage finite element simulation, which comprises the following steps of: 1, performing finite element mesh generation on a concrete structure, endowing all elements with a concrete damage zone model based on a power law type tensile damage equation and initial model parameters, and establishing a concrete structure damage finite element model; step 2, obtaining size information of each unit in the concrete structure damage finite element model in the step 1, and adaptively calculating model parameters of each unit related to the size of the unit based on the size information of the unit; and step 3, simulating a concrete structure loading process by using the model parameters calculated in the step 2 to obtain a concrete structure damage finite element simulation result in which the unit size effect is eliminated. The method breaks through the bottleneck that the unit size effect in concrete structure damage finite element simulation cannot be eliminated in the prior art, and has wide application prospects in the process of objectively simulating concrete structure damage evolution.

The invention discloses a high-rise structure three-dimensional simulation analysis method and system based on finite element analysis, and relates to the technical field of three-dimensional finite element models. The method comprises the following steps: acquiring a current finite element mesh model of a high-rise structure; the current finite element mesh model comprises a plurality of structural layers, and the structural layers comprise at least one type of structure; determining a coupling region of the high-level structure based on each type of structure included in each structure layer; the coupling region is a region formed by various types of connectable high-coupling-degree structures; determining a grid density demand value of each structural layer in the high-rise structure based on a current finite element grid model, a historical finite element grid model and the coupling region of the high-rise structure; and based on the grid density demand value of each structural layer in the high-rise structure, updating the current finite element grid model to obtain an updated finite element grid model. According to the method, the accuracy of a high-rise structure three-dimensional simulation result can be improved.

The invention discloses a method for establishing a concrete in-situ mesoscopic finite element model based on a CT (Computed Tomography) scanning technology, which is applied to the technical field of mesoscopic simulation of a concrete structure. The method comprises the following steps: firstly, performing XCT scanning on a steel fiber ultra-high performance concrete test piece to obtain a two-dimensional sequence image of an internal structure of the steel fiber ultra-high performance concrete test piece; then, image processing is carried out through Avizo software, and three-dimensional space distribution information of a base body, steel fibers and pores is segmented and extracted; on the basis of the three-dimensional information, a Python program is utilized to generate a finite element mesh, an eight-node hexahedron unit is adopted in a model, and the established model can accurately reflect real mesoscopic characteristics such as fiber orientation, distribution and pore defects.

The invention relates to the technical field of nuclear thermal coupling, in particular to a general multi-physical coupling method, device and equipment for a nuclear reactor and a computer storage medium. According to the method, Monte Carlo transport software, a computing environment of a thermotechnical solver and a preCICE communication interface are initialized through a predefined configuration file, Monte Carlo transport calculation is directly completed according to an initial material in first iteration, body power density data are obtained, and the body power density data are transmitted to the thermotechnical solver through preCICE to serve as a heat source to be mapped to a finite element grid. Further obtaining an updated temperature and density field and feeding back the updated temperature and density field to Monte Carlo transportation software; and controlling an iteration process through a convergence criterion until the requirement is met. According to the method, full-process automation and memory-level data exchange in the multi-physical coupling process are achieved, the calculation efficiency and precision are remarkably improved, manual intervention and file read-write bottlenecks are eliminated, and meanwhile, the strong adaptability and good expansibility of the method to different geometric models and physical solvers are guaranteed by relying on the universal interface design and modular architecture of preCICE.

The invention relates to the technical field of bridge structural members, in particular to a steel-concrete composite bridge UHPC pavement structure finite element model construction method, which comprises the following steps of: acquiring structural parameters and UHPC pavement characteristics of a steel-concrete composite bridge, dividing regions, generating a finite element initial grid set, loading a bridge deck load, calculating stress and displacement response of a UHPC pavement layer in each time step, and constructing a finite element model of the UHPC pavement structure. According to the method, by dividing the structural area and introducing the microfracture factor, finite element grid generation is improved, mechanical behaviors are accurate, stress and displacement response can be obtained by combining dynamic analysis and real-time monitoring, and the method is suitable for the dynamic analysis and real-time monitoring. Potential damage is warned in advance, the stability and durability of the bridge are improved by recognizing a nonlinear response area and optimizing interface mechanical analysis, the design precision and long-term performance prediction of the structure are integrally improved, and the reliability of the bridge under the complex working condition is guaranteed.

The invention discloses a multi-scale modeling and simulation prediction method and device for a two-phase composite material, and the method comprises the following steps: S1, carrying out the molecular dynamics simulation of the penetration process of a solution in the composite material based on molecular dynamics, extracting the microscopic information in the simulation process, and obtaining a microstructure model of the composite material; s2, mapping the microstructure model to a finite element grid, and reserving structures between particles and interfaces to obtain a finite element model; s3, inserting a cohesive zone unit into an interface of the finite element model, and modeling an interface adhesion and separation phenomenon between a matrix and particles of the composite material based on the cohesive zone unit; and S4, carrying out analogue simulation on the whole damage evolution process based on the finite element model to realize mechanical simulation analysis and prediction. According to the method, composite material modeling is carried out based on a real microstructure, and more accurate mechanical simulation analysis is carried out based on the modeling.

The present application relates to the technical field of electric digital data processing, in particular to a numerical method and system for analyzing stress field of tunnel frozen soil curtain based on finite element, which obtains a three-dimensional model of a tunnel construction site and geological material characteristic data; performs grid division on the three-dimensional model to obtain a finite element grid model of the three-dimensional model; performs stress simulation on the finite element grid model based on the geological material characteristic data to obtain an initial stress field of the finite element grid model before freezing; analyzes the trend of change of soil density in the freezing process based on the stress distribution of each unit grid in the initial stress field in the finite element grid model to determine a frost heaving stress field of the finite element grid model; and superimposes the initial stress field and the frost heaving stress field to determine a comprehensive stress field of the finite element grid model. The present application effectively improves the accuracy of analyzing stress field of tunnel frozen soil curtain.

The application discloses a kind of crack propagation prediction method and system of water turbine runner under transient hydraulic excitation, belong to the technical field of water conservancy and hydropower engineering, to solve the technical problem that existing prediction method cannot simulate crack propagation under transient hydraulic excitation.The application is by constructing finite element grid and level set field, encryption grid, identify enhanced node and solve runner time sequence displacement field, then calculate the stress intensity factor and energy release rate of crack front node, and calculate crack propagation direction and rate based on this, thereby update and correct level set field, to obtain the crack after expansion, to realize the accurate simulation of crack propagation under transient hydraulic excitation, provide reliable basis for runner crack monitoring, expansion trend prediction and fracture life assessment.Further, the application can track the crack propagation process from the current small condition to the penetration by multiple iterations, and accurately predict the fracture life of the runner according to the propagation law.

The invention discloses a concrete structure damage variable-scale finite element simulation method based on two layers of grids, which comprises the following steps: step 1, respectively carrying out structure scale and material scale finite element grid subdivision on a concrete structure to obtain a structure-material two-layer grid covering the whole structure simulation area; 2, endowing material parameters to a structure scale unit and a material scale unit, and respectively establishing a structure scale finite element model and a material scale finite element model of the concrete structure; and 3, based on a simulation scale transformation criterion and a structure scale-material scale connection technology, dynamically updating the structure scale-material scale collaborative finite element model, and simulating a concrete structure damage evolution process. According to the method, the simulation scale of the damage area is converted based on the two layers of grids, so that the simulation precision of the concrete damage evolution process can be ensured, the calculation efficiency is relatively high, and the method has a wide application prospect in the refined analysis of the concrete structure damage evolution process.

The invention relates to a lattice structure performance homogenization calculation method based on a processing path. The lattice structure performance homogenization calculation method comprises the following steps: constructing a track morphology field based on bounding box size information of lattice cells, processing path information and a processing path process database; carrying out pixel / voxelization on the bounding box of the lattice cells; calculating the area / volume fraction of the unit based on the function value of each node in the trajectory morphology field, and obtaining a finite element grid after screening; the processing path is used as input, so that tedious model format conversion, curved surface subdivision and line cluster intersection operation are avoided; the finite element grids are numbered, and material attributes of units are calculated according to an SIMP mode to construct a finite element grid topological relation; a grid containing an area fraction is used as a homogenization representative volume unit, under the loading condition of considering six unit strain inputs, microscopic strain is substituted into a homogenization integral formula, and a macroscopic equivalent elastic tensor is calculated, so that the convergence speed and precision can be effectively improved.

The invention relates to the technical field of pipeline layout, and discloses a complex pipeline system layout optimization method based on a multi-material interpolation model. The problems that in the prior art, multi-pipeline independent communication cannot be met, and the multi-inlet-outlet matching relation is difficult to specify can be solved to a certain extent. The method comprises the following steps: acquiring geometric information and pipeline information of a design domain, carrying out finite element mesh generation on the design domain, setting a pseudo-density variable field, filtering the pseudo-density variable field through a Helmholtz equation, carrying out projection through a black viezeldet equation, and establishing an interpolation model; the method comprises the following steps: setting laminar flow physics fields, giving inlet and outlet boundary conditions, respectively solving fluid control equations of the laminar flow physics fields, calculating to obtain fluid flow dissipated energy, fluid volume fraction and outlet flow variance in each pipeline, establishing a complex pipeline network system layout optimization problem model, and selecting a mathematical programming algorithm to carry out optimization design. And the optimized pipeline system layout is obtained.

The application discloses a kind of parameterization hollow shaft radial hole area finite element grid automatic generation method and system, comprising: the radial hole area is divided into multiple symmetrical regions;Along the node on the curve of the radial hole area of a region, then along the circumferential sweep generates a layer of nodes of a region, the distribution of the nodes of this layer corresponds to the 8 node 4 edge of the certain end face of 20 node 6 polyhedron;Along the thickness direction of hole area, generate k layers of nodes, when k is odd, the distribution of the nodes corresponds to the 4 node 4 edge of face, when k is even, corresponds to the 8 node 4 edge of face;2D face grid node is generated layer by layer, then every 3 layer 2D face grid node constitutes a layer of 3D grid, obtains a region grid;Through mirror image symmetry replication, obtain other region grid, generate the grid of entire radial hole area. Realize parameterization 20 node 6 polyhedron finite element grid automatic generation, improve the accuracy of finite element analysis.

The application relates to a simulation prediction method for the plugging life of an electrical connector contact piece, which comprises the following steps: establishing a three-dimensional simulation model of a plug end and a socket end of an electrical connector, and defining material properties and contact relations of each component in the three-dimensional simulation model; performing finite element grid discretization on the three-dimensional simulation model; applying a fixed constraint to the socket end, applying displacement load simulating a plugging process to the plug end, and performing statics solving to obtain plugging force in the plugging process of the plug end and the socket end and contact pressure data of the plug end contact piece and the socket end contact piece; and mapping the statics solving result to a fatigue analysis module to simulate and calculate output of life distribution results of the plug end contact piece and the socket end contact piece under repeated plugging load. The application has the effect of analyzing stress and strain states of internal contact pieces of the electrical connector and fatigue damage of the internal contact pieces under repeated plugging, so as to help monitoring personnel to find potential mechanical failure problems in time.

The invention provides a method for testing fracture strain temperature correlation of a metal material, and belongs to the technical field of material mechanical property testing. The method is based on a global digital image correlation (Globe-DIC) technology, and accurate positioning and measurement of surface displacement and strain of a sample in a high-temperature environment are realized through accurate matching of a finite element grid and an image of the sample. Through the characteristics that high-temperature-resistant ceramic speckles are prefabricated, thermal radiation interference is restrained through blue light illumination, and a global method DIC is not affected by the thermal expansion effect of materials, the consistency of scale distance sections at different temperatures is guaranteed. The fracture strain is indirectly extracted by selecting a local area far away from the fracture, and the problem of speckle falling caused by a new free surface generated by the fracture is avoided. According to the method, accurate measurement of fracture strain and determination of temperature correlation under the high-temperature condition can be realized, and reliable data support is provided for temperature term calibration of a material constitutive model and a fracture criterion.

The application discloses a kind of automobile spoiler assembly performance simulation analysis method, system and storage medium, its method includes: importing spoiler assembly structure data in pre-processing software, calling abstract midplane unit to carry out abstract midplane processing to spoiler assembly structure data, obtain spoiler simplified model;In pre-processing software, the parameter counterweight assembly simulation processing of spoiler simplified model is carried out based on finite element grid, and the finite element simulation model of spoiler is obtained;Based on the connection working condition of spoiler finite element simulation model and the load force acting on the spoiler finite element simulation model, the modal performance, stiffness performance, strength performance and abnormal force resistance performance of spoiler assembly are analyzed in pre-processing software and post-processing software.The application replaces test stand test by simulation analysis, verifies automobile spoiler assembly performance, solves the problem that the performance of automobile spoiler assembly is verified by test in existing design stage, and leads to long research and development cycle, high research and development cost.

The application discloses an explicit finite element parallel computing method for seismic wave simulation, comprising the following steps: constructing a three-dimensional computing domain, generating an unstructured finite element grid based on real terrain and velocity structure data; performing domain decomposition on the computing domain, and dividing the grid into multiple sub-regions; distributing the tasks of the sub-regions to parallel computing nodes, discretely solving a three-dimensional elastic wave equation containing a damping term by using explicit time integration and a lumped mass matrix, synchronously calculating time sequences of wave fields of the sub-regions; integrating the results to obtain seismic wave field distribution, and outputting ground motion parameters of a target region. By constructing an integrated explicit finite element parallel computing framework of a seismic source-medium-terrain, efficient, stable and high-precision simulation of seismic wave propagation under complex geological conditions is realized, and the reliability of strong ground motion prediction is significantly improved.

This invention relates to the field of energy storage equipment structural simulation and mechanical reliability assessment technology, specifically a strain node assessment system for energy storage cabinets based on mechanical simulation. The system includes: a basic data parsing module, which acquires three-dimensional structural data and material property data of the energy storage cabinet, extracts assembly and bonding features, and performs finite element mesh generation to form an initial strain node set; a dynamic interference injection module, which acquires historical operating environment load characteristic data and generates a dynamic interference load spectrum through a generative adversarial network model; a trust entropy assessment module, which extracts ideal stress tensor sequences and nonlinear stress tensor sequences and calculates the dynamic divergence rate, defining it as the node-level simulation trust entropy; and a topology reconstruction module, which optimizes and reconstructs target nodes exceeding a threshold and iteratively updates them, outputting a structural optimization assessment report or an initial safety assessment report. This invention enables early screening of high-risk assembly nodes in energy storage cabinets and provides decision support for structural reconstruction.

The invention provides a dam internal structural surface automatic identification method and device, and relates to the technical field of hydraulic engineering structure analysis and computational mechanics, and the method comprises the steps: reading a dam finite element grid, and defining boundary control parameters of a target structural surface position; the method comprises the following steps of: identifying a connecting surface simultaneously containing a first type of boundary nodes and a second type of boundary nodes in a model, and performing iterative expansion on the connecting surface by utilizing a topology propagation algorithm to form a continuous connecting surface set; positioning all unit surfaces formed by the first type of boundary nodes based on the set, and integrating the unit surfaces to obtain a target structural surface; and finally, outputting a multi-format grid file through coordinate transformation. According to the method and the device provided by the invention, the node boundary type is defined, the topology propagation algorithm is utilized to automatically identify and iteratively expand the connecting surface, the identification precision is improved, the processing efficiency is improved, the efficient and full-automatic identification of the internal structural surface of the dam is realized, and a core technical support is provided for structural analysis.