Automatic Parametric Modeling and Stiffness Analysis of Aluminum Alloy Carbody Structure
Based on the CAD drawings of aluminum alloy carbody section,a fast and fully automatic method for extracting the neutral line and thickness of the carbody section is proposed,and the automatic generation and assignment of the grouping of the neutral line of the section,meshing grid,thickness,and material properties are realized.On this basis,the special software for aluminum alloy carbody structure modeling and stiffness analysis is developed independently based on MATLAB software.The special software can use the CAD drawings of the beam and column sections of the carbody to automatically establish the finite element model of the doors,windows,traction beam,bolster beam,buffer beam,door pillars and end wall structures of the carbody,and realize the automatic and complete matching with the finite element mesh of the carbody section.At the same time,the constraints and loads are automatically applied and the analysis working conditions are formed,so as to establish the parametric finite element model of the whole car structure and realize the rapid finite element analysis of the rigidity of the carbody structure.By comparing the stiffness with the manually created finite element model of the carbody structure,the correctness of the automatic establishment of the parametric aluminum alloy carbody structure finite element model based on the above method is verified.
万方数据
维普
