The Research And Application Of Steel-wood Composite Beam Design Platform

At present,domestic and foreign researchers are doing more and more researches on steel-wood composite structures,mainly based on national standards and previous studies to determine the initial experimental research plan,and then combine the finite element analysis to perform finite element analysis and calculation on the experimental research plan,and obtain the basis The data continues to modify the experimental research program.After the test is over,a comparative analysis will be carried out according to the test results and the finite element results,and finally the parameter analysis of the finite element model.This traditional finite element analysis method is too complicated,reproducible and inefficient.As a traditional finite element analysis software,ABAQUS is suitable for force analysis of complex structures in many scientific and technological fields due to its universal software analysis module.However,ABAQUS finite element software does not develop special analysis modules for specific engineering structures.There are a lot of repetitive calculations in the finite element analysis of steel-wood composite structures.The complexity and repetitiveness of the software simulation operation process results in a long time-consuming pre-processing stage,which requires users to have a very solid theoretical analysis foundation and computer Operating skills.Therefore,this article is based on ABAQUS software for secondary development,using Python to compile a steel-wood composite beam design platform.The main work and conclusions of this paper are as follows:(1)Based on the secondary development interface of ABAQUS finite element software,based on the cross-section characteristics of the two types of steel-wood composite beams,the Python programming language is used to perform secondary operations according to the size parameters,material characteristics,contact surface and structural force characteristics of the steel-wood composite beams.Develop and compile the corresponding GUI graphic processing interface,and complete the development of the composite beam component calculation platform.The platform includes finite element analysis pre-and post-processing modules;by integrating all pre-processing modules,the parametric modeling of steel-wood composite beam components is realized,and by modifying some codes,the platform can quickly perform finite element analysis of most composite beam components Analysis and cross-section design.(2)Using the steel-wood composite beam design platform,based on the characteristics of the test members,11 groups of steel-wood composite beams finite element test models were established.Finite element analysis is carried out on two different types of steel-wood composite beams,and the load deflection curve is obtained.The test results are compared with the finite element calculation results.Research shows that the test and the finite element results are in good agreement.Therefore,the platform can quickly and effectively realize the parameterized modeling and structural analysis of steel-wood composite beam components,which shows that the steel-wood composite beam design platform is effective and feasible,and provides fast analysis for the finite element analysis of similar composite beam components.method.(3)Based on the steel-wood composite beam design platform,51 sets of control models were established for the six section parameters of H-shaped steel web height and thickness,flange thickness and width,and plywood thickness and width.The composite beam is affected by the bending performance;at the same time,the optimization parameters and orthogonal models of 9 groups of steel-wood composite beams are constructed,and the orthogonal cross-section design of the steel-wood composite beams is carried out.