Finite Element Analysis And Optimization Of High-Speed Colse Combined Press Frame

The achievement in structural analysis of the frame of metal forming machine and common method of structural analysis are introduced in this thesis. With using structural analysis software-ANSYS, mode analysis and optimization are performed to close combined frame of JA31G-30 high-speed press. Optimizated structure is advanced. And in order to testify the validity of the optimizated structure, static and dynamic analysis is carried out.Firstly, the characteristics of structure and the force of the close combined frame are analyzed. The mode of the frame is established by applying solid element of ANSYS. Pretension of close combined frame is simulated in virtue of reducing temperature.In order to analyze the dynamic characteristics of the frame, the Lanczos method, in modal analysis, is used to calculate the first ten modal shapes. And then, optimization is executed to the frame mode. Seven optimization projects are calculated by using ANSYS. Compared the seven projects, the best project is found out.Equivalent stress and displacement of the primary structure are compared with optimizated structure in static analysis. From static aspect, the feasibility of optimizated structure is proved.Finally, in dynamic research, the impulsive loads of the frame are studied and dynamic response of the typical process is calculated and analyzed with modal superposition method. The result of the frame analysis is compared with the improved one. The viewpoint of dynamic design is put forward. Accordingly the optimizated structure is testified to be successful. The conclusion, in the static and dynamic study, will provide important reference for the press design in the future.