Analysis And Optimum Design For Metal Structures Of Large-scale Heavy-load Container

Container is increasingly being used as the essential tools in modern logistics industry as an essential tool.The research have attracted great attention on structural design and manufacture in research institutions at home and abroad.This paper's research object is the metal structures of large-scale heavy-load container.Based on the ANSYS platform,some researches have been done on finite element parametric modeling,simulation analysis and optimum design of the container's structures.The research results have laid some theoretical and practical foundation for the lightweight research on the metal structures of large-scale heavy-load container.Firstly,the finite element parametric modeling has been done on the metal structures of the container by APDL.Its structures are simplified on the basis of the analysis in order to reduce computing time.According to the structure and working conditions of the container,some work is done to choose suitable elements and define material properties,and the finite element mesh division and constraint are also done.Based on the finite element model,the simulation analysis is done on six basic tests,and the distribution of stress and strain is obtained.The results are in permeable error limits compared with the stacking test,ceiling test,hanging bottom test,tie test,transverse rigidity test and longitudinal rigidity test.It shows that the finite element model and the boundary conditions are basically reasonable,and it shows the simulation can replace the actual test to detect the static characteristics of the container.On this basis,the modal analysis and transient analysis of container are carried out to obtain the natural frequency and modal shape of the container.They are the basis for the subsequent optimization design.Secondly,the optimum design is carried out on the metal structure of large-scale heavy-load container.Based on ANSYS,single object optimization design and multi-objective fuzzy optimal design are carried out by APDL.After ensuring the strength,stiffness and capacity,the container obtain two groups of different optimization results by calculating and simulation,and the optimized parameters are obtained.The parameters are on the eight beams and four columns of the container.The fuzzy optimal design can decrease to21% on the weight,and the simulation results show that the mechanical properties of the optimized container have been improved.Finally,the system is developed by VB and ANSYS,and it is on the automatic modelling,static and dynamic characteristic analysis.The structures of large-scale heavy-load container are realized to the parameterization,and ANSYS is encapsulated by VB.When the users input the wall thicknesses and material parameters of the eight beams and four columns into the interface,the system can produce the command file to ANSYS,and the file can call ANSYS software to do corresponding analysis and calculation.After the calculation is completed,the results can be obtained.The user can easily do the finite element dynamic and static analysisof the container,and the programming time has been saved.It is important to realize the lightweight research of large-scale heavy-load container.