Development And Application Of Pre-processing And Post-processing Platform For Structural Finite Element Analysis Based On Web

In the seismic design of super high-rise structures,the dynamic elastoplastic analysis of them by numerical means is an important component.Currently,the structural finite element analysis platforms that are used more are mainly desktop applications,which have a strong dependence on the computing capabilities of client devices,and have certain inconveniences in use.Compared with desktop applications,web-based analysis platforms reduce the dependence on client device performance and have good cross-platform capabilities.In view of this,this paper has developed a pre-and post-processing platform for structural finite element analysis based on the network.The main research work is as follows:Web-based finite element model information analysis and access design.Model information includes model data and result data.This paper uses PHP language to extract model data such as nodes,elements,materials,sections,loads,and boundary conditions in the INP file to achieve rapid modeling on the network side.The result data extraction function is completed based on Python,and structural displacement response data and stress response data are obtained by analyzing the ODB file.After the model information analysis is implemented,the MySQL database is used to complete the access to the model data and the result data based on the network.The function of the model information analysis and access system is verified by a numerical example.Design of building structure visualization service based on webpage.By using the Three.JS framework,a visualization system for the pre-and postprocessing stages of the finite element structure is built,and the image rendering of the building structure is implemented with the web page as the carrier.In the pre-processing visualization system,three-dimensional rendering of structural nodes,elements,loads,and boundary conditions is achieved.In the postprocessing stage,the result values are divided in different colors to establish a structural stress response cloud image rendering visualization system,using the Tween library to implement dynamic rendering of displacement response,and to construct a structural displacement response dynamic rendering visualization system.Finally,a 6-layer frame-shear wall is used as an example to verify the correctness of the visualization system by comparing with the graphics rendering results in ABAQUS software.Design of pre-and post-processing platform for web-based structural finite element analysis.In order to meet the needs of structural finite element analysis using a browser as a carrier,the application interface of the structural finite element pre-and post-processing platform was developed,including four modules: registration and registration,project list display,pre-processing visualization and post-processing visualization.In order to meet the user's basic operation requirements for the model,interactive functions have been added in the visualization module.Unit functions such as unit selection,stress response pictures and displacement response motion map generation,and displacement response amplification have been developed using AJAX technology.Finally,the browser is used as the carrier to complete the establishment,storage,analysis,and visual display of a 12-layer frame-shear wall example using the structure pre-and post-processing platform to verify the function of the platform.