23 results about "Ansys software" patented technology

The invention provides a numerical simulation and MLP-based rapid assessment method for ship structure damage under fire action, which comprises the following steps: constructing a thermal coupling model based on PyroSim software and ANSYS software, comprehensively considering dual change effects of heat conduction and structural mechanics, and performing thermal coupling numerical simulation on a ship under fire action; a multi-layer perceptron model is adopted to carry out deep learning training on simulation data, and a deep layer perceptron model is constructed to evaluate structural damage under the action of the ship fire; gPU acceleration logic is designed, calculation efficiency of key steps is accelerated and optimized through the GPU, and the aim of rapidly evaluating structural damage under the ship fire action is achieved. According to the technical scheme, the calculation cost can be remarkably reduced, an efficient and accurate damage evaluation result can be provided, and a new technical support and solution are provided for ship structure safety research in a fire scene.

The invention discloses a shield tunnel segment structure prototype test load equivalence method considering joint influence, and belongs to the technical field of shield tunnel segment structure prototype tests, and the method comprises the following steps: respectively building two beam spring finite element models considering joint influence in ANSYS software; five actual load parameters actually borne by the shield tunnel segmental lining structure are substituted into a beam spring finite element model, and actual axial force, actual bending moment and actual displacement are obtained; substituting the three equivalent load parameters into another beam spring finite element model to obtain an equivalent axial force, an equivalent bending moment and an equivalent displacement; the average value relative error between the equivalent axial force and the actual axial force, the similarity coefficient between the equivalent bending moment and the actual bending moment and the similarity coefficient between the equivalent displacement and the actual displacement are made to meet the conditions, and the final three equivalent load parameters are determined. According to the method, the calculation precision and the equivalent precision are remarkably improved, and the equivalent load in the test better conforms to the actual load.

The invention discloses a truck bogie side frame / swing bolster CAD / CAE (computer-aided design / computer-aided engineering) integration method and a truck bogie side frame / swing bolster CAD / CAE integration system, and belongs to the technical field of rail transit equipment design. The truck bogie side frame / swing bolster CAD / CAE integration method comprises the following steps: preprocessing an original CAD model, and converting input parameter data into ANSYS software recognizable format; constructing a CAE (Computer Aided Engineering) template on the basis of ANSYS Workbench and intelligent mapping; and carrying out CAE simulation analysis by utilizing the recognizable parameter data and constructing a CAE template, and automatically generating a simulation analysis report. A CAE (computer aided engineering) simulation analysis template is established by utilizing CAD (computer aided design) geometric modeling, so that full-process automatic analysis under the working conditions of static load and static strength stipulated by TB / T 3549.2 is realized, and the design efficiency and reliability of the side frame / swing bolster of the truck bogie are remarkably improved.

The invention belongs to the technical field of railway engineering computer aided design, and particularly relates to a method for establishing interlayer contact in batches based on a vehicle rail road ground coupling model. In order to truly restore the running service environment of the train, UM software is used for establishing a professional train model, ANSYS software is used for establishing a flexible under-rail model, the two pieces of software are combined for simulation to establish a train-rail-road-ground coupling model, the running condition of the train when an under-rail system participates is simulated, and the running service environment of the train is truly restored. The operation performance of under-rail system abnormalities such as fastener fracture failure, track slab cracking, CA mortar layer deterioration failure and excessive foundation bed settlement can be avoided. After modeling is completed, a programmed language is used for building interlayer contact force elements in batches, interlayer constraint capacity of different aging degrees and degradation degrees is simulated by changing rigidity and damping coefficients of the force elements, or constraint is directly removed to simulate abnormal working conditions such as fracture.

The invention discloses an engineering structure analysis and result visualization method based on BIM + WebGL, and relates to the technical field of engineering structure analysis. Comprising the following steps: establishing a three-dimensional BIM model of an engineering structure, and uploading the three-dimensional BIM model in a glb format to a structure safety analysis platform interface; automatically extracting geometric parameters, and obtaining specific analysis parameters required by finite element analysis pretreatment on a structure safety analysis platform interface; storing the geometric parameters and the specific analysis parameters in a preset database; extracting information stored in the database to automatically generate an ANSYS APDL command stream; the ANSYS APDL command stream is imported into ANSYS software, and a finite element analysis result is obtained; and a finite element analysis result is extracted from the database through a structural security analysis platform interface, and an analysis process and a final result are displayed in a graphical mode. According to the method, a complete process of automatically extracting data from the BIM model, performing finite element analysis and visualizing a result cloud picture is realized, and the efficiency and the precision of engineering analysis are remarkably improved.

The invention belongs to the field of engine design, and particularly relates to an aero-engine whole machine dynamic structure design parameter optimization method, which utilizes an APDL language of ANSYS software to carry out parametric modeling on an aero-engine whole machine (including a rotor, a support and a stator casing), and applies additional centrifugal force and additional gyroscopic moment generated by maneuvering flight. The stress level of the bearing case, the strain energy distribution of a rotor system and the rotor and stator gap change are obtained through bearing case stress analysis, critical speed analysis and unbalanced response analysis. Based on the analysis results, multi-objective optimization is carried out on complete machine dynamic design parameters, so that the stress level of a force bearing casing is lowest, rotor strain energy distribution meets rotor dynamic design requirements, rotor and stator gap changes are minimum, the rub-impact risk is reduced, optimization of the structural design parameters is completed through software, the design efficiency is improved, and the design cost is reduced. The design period is shortened.

The invention discloses an ANSYS-based automobile instrument screw pre-fixation simulation method, which comprises the steps of drawing a screw pre-fixation assembly 2D model, including a screw model, a workpiece model and a connecting part model; importing the 2D model into ANSYS software, and setting boundary conditions including defining material attributes, loading conditions, contact conditions and constraint conditions; loading conditions are applied to the 2D model, and stress distribution, deformation conditions and contact pressure in the screw pre-fixing process are calculated based on ANSYS simulation; and according to a simulation result in the step S300, optimizing a screw pre-fixing scheme, wherein the pre-tightening force and the torque of the screw model are adjusted.

The invention discloses a simulation method for a high-temperature hyperelastic wave spring, and relates to the field of material science and mechanical elastic elements, in particular to the simulation method for the high-temperature hyperelastic wave spring. The high-temperature alloy spring aims at solving the problems that although a traditional high-temperature alloy spring can bear a high-temperature environment, the elastic deformation degree is low, and the material cost is too high. The method comprises the following steps: 1, simultaneously carrying out a compression test and a hyperelasticity test on the Zr50Cu25Ni7.5 Co17.5 alloy to obtain a stress-strain curve of the alloy and obtain parameters; 2, a Zr50Cu25Ni < 7.5 > Co < 17.5 > alloy material model is constructed; 3, performing three-dimensional modeling on the wave spring to obtain a three-dimensional model of the wave spring; setting conditions of ANSYS software with two import parameters; importing the three-dimensional model of the wave spring into ANSYS software, performing grid division on the three-dimensional model of the wave spring, and endowing parameters of the three-dimensional model of the wave spring to obtain a simulation model of the wave spring after grid division; and 4, the ANSYS software outputs a stress-strain distribution diagram of the wave spring simulation model.

The present application relates to a kind of compressor blade grid parameterization joint call analysis method.The present application is with MATLAB software as total control hub, by the flow control and data interaction ability of MATLAB, the grid parameterization deformation technology of HyperMesh software and the parametric finite element solution technology of ANSYS software are organically integrated together, construct a full-automatic closed loop analysis method and system from variable input to result output.The method realizes the quick response and batch calculation of several kinds of uncertain variables such as geometry, material, load, and is especially suitable for the fatigue life reliability analysis of compressor blade.

The present invention provides a method for fine thread CAE parametric modeling and pre-tightening simulation, including software and working directory settings; inputting geometric feature parameters and generating a MAC file; calling MAPDL.exe and the MAC file for modeling; generating a single pitch ring and meshing it; decoupling elements from geometric features; moving nodes to generate thread features; duplicating single-pitch elements to generate a complete thread; completing remaining features to form a complete bolt; exporting a finite element model in cdb format; and applying torque and rotation angle to the bolt head for calculation. The present invention has the beneficial effects of achieving parametric modeling of a fine thread CAE model using only ANSYS software, significantly reducing software purchase costs. The principles of this modeling method are not limited to ANSYS but can also be applied to simulation software such as ABAQUS.

This invention relates to the field of solid rocket motor technology, specifically to a method for strength analysis and modeling of solid rocket motor casings. The steps are as follows: S1, import the 3D model of the metal casing into ANSYS software; S2, perform a series of cutting, merging, and deleting operations on the 3D model to convert it into a 2D model; S3, assign material properties to the 2D model and divide it into quadrilateral meshes to obtain a 2D finite element model; S4, based on the coordinate characteristics of the geometric model, select the inner hole line numbers of the front and rear joints of the casing, and sequentially select the inner line groups of the casing according to "points attached to lines" and "lines associated with points," thereby determining the application position of the pressure load; S5, rotate the 2D finite element model by a certain angle to expand it into a 3D model; S6, after applying the pressure load, solve the problem and extract the equivalent stress to evaluate the structural strength of the metal casing. This invention reduces the difficulty of simulation, significantly improves work efficiency, and has good versatility.

The present invention relates to a method for calculating riveting process parameters and riveting performance test parameters by finite element simulation. The method comprises: using UG software to establish a working process model of rivets and flaring ejector pins; defining analysis methods and workflows in ANSYS software, and defining materials of flaring rivets and flaring ejector pins; performing meshing and contact setting on flaring rivets and flaring ejector pins; defining constraints and loads on flaring rivets and flaring ejector pin models, wherein the constraints are fixed to the bottom surface of the rivets, and fixed loads are applied to the ejector pins respectively; performing operation setting and calculation; comparing the calculation results with the assembly drawing parameters, and gradually adjusting the applied load until it matches the assembly parameters, and finally determining the applied fixed load. The method ensures the reliability and safety of assembly of key components and the scientific nature of the test during rivet manufacturing, and also greatly reduces the cost compared with the physical test method.

The invention discloses a cross-scale multi-field coupling modeling method in a low-temperature temperature measuring device. The method comprises the following steps: establishing a three-dimensional simulation model of the temperature measuring device by using three-dimensional computer aided design software Solidworks; the method comprises the following steps of: carrying out model pretreatment in Spaceclaim; carrying out grid division on a model in Fluent-Meshing; importing the three-dimensional simulation model of the fluid computational domain after grid division into a FLUENT module of ANSYS software, and setting the FLUENT module; boundary and material options are set, and a laminar flow model, a radiation model and a heat transfer model are set in Models options; and taking the processed working condition parameters as CFD simulation boundary conditions, independently simulating a flow field in Fluent, performing grid independence verification, and processing and analyzing a result. According to the method, information such as monitoring temperature, cooling and cooling power is simulated, the heat transfer phenomenon in the low-temperature temperature measuring device is effectively described, and a reference value is provided for optimization design.

The application discloses a kind of finite element structure calculation methods of boom system of curved arm type aerial work platform, belong to aerial work platform technical field.The method is aimed at the combined arm support formed by telescopic arm and folding arm, realizes full-process automation analysis in ANSYS software platform.Specific steps are: after cleaning and mid-surface extraction to geometric model, establish finite element model in Workbench and import Mechanical APDL module;Multiple groups of working condition parameters are input through text file, drive APDL command stream to automatically adjust arm support telescoping and amplitude posture;Then automatically establish slider contact, simulate oil cylinder and hinge point connection;After applying constraint and load, open large deformation effect to carry out static force solution.Program automatically completes batch calculation of all working conditions, and outputs model, result file and key stress and deformation data.The application improves the precision and efficiency of multi-working condition analysis on complex combined arm support.

The invention belongs to the technical field of metal additive manufacturing numerical simulation, and particularly relates to a method for establishing an efficient LPBF block-by-block finite element model based on thermal-mechanical coupling, which comprises the following steps of: establishing an LPBF block-by-block finite element model on the basis of ANSYS software; constructing a three-dimensional heat transfer calculation model and a three-dimensional stress calculation model of the metal LPBF by utilizing an APDL language; the ANSYS software program is used for carrying out grid division on the target workpiece according to a block-by-block modeling strategy, and temperature distribution calculation is carried out according to thermophysical parameters of a target workpiece material; and applying the calculated temperature distribution as a load to the three-dimensional stress calculation model, and performing stress field distribution calculation according to the temperature distribution and the mechanical property parameters of the target workpiece material at different temperatures to obtain stress distribution. The method provided by the invention realizes the prediction of the temperature field and the stress field, can reduce the time cost, and improves the simulation efficiency and the simulation precision.

The present invention provides a multi-objective optimization method for the layout of oil pad screws on the support rail of a large heavy-duty liquid hydrostatic turntable. The oil pad is connected to the turntable base through a number of screws. First, a single fan-shaped oil film oil pad and a 1 / 16 base are subjected to fluid-solid coupling simulation analysis through ANSYS software to obtain the overall deformation of the oil pad oil cover, the deformation of the oil pad edge and the equivalent stress data of the oil pad. The minimum value of the above three data is used as the multi-objective function, and the screw spacing angle and screw radius of each circle are used as optimization parameters. A multi-group experimental design with five factors and five levels is established. The influence of each optimization parameter on the objective function is obtained based on the response surface method. Finally, the optimal solution of the screw layout is obtained according to the experimental design table and the multi-objective optimization model, and through the genetic algorithm. The method provided by the present invention is to further improve the screw layout between the oil pad and the turntable base, reduce the influence of the deformation of the oil pad surface on the thickness of the supporting oil film, thereby improving the static performance such as the stiffness and bearing capacity of the hydrostatic oil film, and provide a reasonable basis for the research on the oil pad and oil film of a large heavy-duty liquid hydrostatic turntable.

The invention discloses a method for calculating the safety coefficient of a spider type overhead working truck, which belongs to the field of overhead working trucks and comprises the following steps of: firstly, modeling a three-dimensional rigid model; importing the three-dimensional model into ADAMS software, performing Boolean operation merging on the model, and adding constraints and drives; carrying out flexible processing on each section of boom model of the whole vehicle in ANSYS software to obtain an MNF file and outputting the MNF file; re-importing the MNF file into the ADAMS software to replace an original rigid arm support model; carrying out rigid-flexible coupling multi-dynamics model simulation, and obtaining the real-time change condition of the contact counterforce between the supporting leg and the ground by utilizing a post-processing function; wherein the spider type overhead working truck has four overturning lines AB, BC, CD and DA, an overturning moment Mr and a stabilizing moment Ms are calculated by utilizing a formula, and finally, a safety coefficient K is calculated by combining the overturning moment Mr and the stabilizing moment Ms calculated in the step S7; the dynamic safety coefficient of the spider type overhead working truck is obtained through the change of the supporting reaction force of the supporting legs, and the authenticity of stability evaluation can be improved.

The invention discloses a structure optimization design method of a planetary reducer, which comprises the following steps of: 1, creating a gear geometric model based on SOLIDWORKS software, determining material types, setting material parameters, and defining unit types and attributes; 2, distributing unit attributes based on ANSYS software, setting a grid division level, selecting a grid division mode, and generating a finite element model through grid division; 3, defining an analysis type based on ANSYS software, applying a load to the finite element model, and carrying out solution calculation; and 4, entering a postprocessor based on ANSYS software, observing and analyzing a calculation result, and obtaining the total deformation, equivalent stress and equivalent elastic deformation conditions of the planetary reducer gear. According to the method, modeling of the planetary reducer gear is realized by using SOLIDWORKS software, the modeling efficiency is improved, and the total deformation, equivalent stress and equivalent elastic deformation conditions of the gear are systematically and perfectly analyzed by using ANSYS software.

The invention provides a CFD-DEM coupling simulation method for high-viscosity fluid stirring. The CFD-DEM coupling simulation method is suitable for solid-liquid stirring simulation of high-viscosity hydroxyl-terminated polybutadiene and superfine silicon dioxide particles. The method mainly comprises the following steps: establishing a solid-liquid stirring three-dimensional model, and importing ANSYS software to perform boundary extraction and grid division operation; the file obtained after grid division is imported into FLUENT software, and then the boundary grid file is imported into EDEM software; setting a material parameter, a viscosity model and the like of the high-viscosity fluid in FLUENT software, and setting a material parameter, a generation quantity and a generation speed of particles, a rotating speed of a stirring paddle and the like in EDEM software; a UDF script is read in FLUENT software, a coupling switch of EDEM software is turned on, bidirectional coupling simulation of simulation data exchange is carried out on solid-liquid stirring, a simulation result is obtained, and analysis and research are carried out on high-viscosity fluid flow field characteristics and a solid particle dispersion mechanism. A bidirectional coupling CFD-DEM simulation method is adopted to simulate stirring of high-viscosity fluid, and reference is provided for related research.

The present invention discloses a forward design method for machine tool structural components based on a trident structure. The method comprises: using the trident structure as the basic structural unit for the internal ribs of the structural component to be designed; constructing the internal rib structure of the structural component to be designed according to the gradual growth pattern of the trident structure, establishing a mathematical model and flow chart for the growth, establishing a parametric model of the structural component to be designed using three-dimensional software, and generating a number of model samples; randomly sampling the model samples using a Latin hypercube algorithm, and analyzing the static and dynamic characteristics of the model samples using ANSYS software; training the static and dynamic characteristic analysis results of the model samples using a BP neural network to construct a BP neural network prediction model; and cyclically approximating the BP neural network prediction model using a genetic algorithm, comparing it with a traditional element structure form, and determining the optimal size within the design size range of the structural component to be designed. The present invention can improve the static and dynamic characteristics of the structure, save a large amount of manpower and material resources, and facilitate processing and manufacturing.

A three-dimensional simulation method for heating performance of a fiber bundle in a high-temperature carbonization furnace based on a dynamic mesh method relates to the technical field of a design simulation analysis method for a high-temperature carbonization furnace used in carbon fiber production. Aiming at the technical deficiencies of the three-dimensional simulation method in the design process of the existing high-temperature carbonization furnace, the method comprises: (1) establishing a three-dimensional simulation model; (2) transferring the model to the Global Mesh Setup module of the ICEM software for meshing; (3) transferring the model to the FLUENT module of the ANSYS software and setting boundary conditions; (4) obtaining the result through simulation operation, which is used as an indicator for determining the heating performance of the fiber bundle in the high-temperature carbonization furnace; (5) repeating steps (1)-(4), and realizing the visibility of the temperature field in the furnace cavity and the temperature field on the surface of the fiber bundle during the heating process through the temperature change cloud map of the detection surface, and outputting the result intuitively. It reduces costs, shortens product development cycles, and provides a basis for numerical simulation research.

The invention relates to the field of dam structure intelligent design, and discloses a concrete face rockfill dam partition intelligent optimization method and system. According to the method, a partitioning problem is constructed into a mathematical model which takes four-dimensional geometric parameters as design variables, takes the three-dimensional volume utilization rate of a secondary rockfill area as an optimization target and takes multiple indexes such as dam body settlement and deformation as safety constraints. The method is characterized by comprising the following steps of: firstly, automatically generating a data set of a plurality of groups of design schemes by cooperating AutoCAD and Ansys software; secondly, training and constructing a machine learning agent model capable of replacing high-time-consumption finite element calculation by utilizing the data set; and finally, based on the high-precision agent model, performing efficient optimization by applying an intelligent optimization algorithm, and obtaining a partitioning scheme with the optimal economic benefit under the condition of meeting all security constraints. According to the method, the design efficiency and the optimization level are remarkably improved, and an automatic and intelligent solution is provided for dam partition design.

The present invention provides a method for rapidly assessing damage to ship structures under fire based on numerical simulation and MLP. The method includes: constructing a thermomechanical coupling model based on PyroSim and ANSYS software, comprehensively considering the dual effects of heat conduction and structural mechanics to perform a thermomechanical coupling numerical simulation of the ship under fire; employing a multi-layer perceptron model to perform deep learning training on the simulated data to construct a deep perceptron model to assess structural damage under ship fire; and designing GPU acceleration logic to optimize the computational efficiency of key steps through GPU acceleration, thereby achieving the goal of rapidly assessing structural damage under ship fire. The technical solution of the present invention not only significantly reduces computational costs but also provides efficient and accurate damage assessment results, providing new technical support and solutions for the research of ship structural safety under fire scenarios.