Based On Finite Element Of The Ams-02 At The Top Of Bracket Structural Analysis And Optimization Design

The dissertation supported by the project of the Alpha Magnetic Spectrometer (AMS-02), concentrates on structural analysis and optimum design in Top Bracket. In the thesis, the large software ANSYS8.0 which is a finite element analysis (FEA) tool is used.At first, we study the theory of FEA and Pro/E. On the basis of the theory, we analyze the characteristics of the Top Bracket and set up a 3-D model in Pro/E. Through the connection technology, we can use the 3-D model in ANSYS. The model is simplified on the basis of its characteristics in the physical and mechanical geometry, and then we establish the FEA model. We discuss the effect that is caused by meshing grids and reduce the error from the quality of the meshing grid. In the thesis, we calculate a few FEA models and find a good one. The stress and displacement distribution are shown in the thesis. As the result, we discuss the intensity of the Top Bracket.Secondly, the mode model of the Top Bracket is established. Based on the model, we calculate the inherent frequency and vibrant graphics, so we can use the data to amend design.Then, with combination of FEA and optimum design, we research a practical optimum design method that is widely used in engineering. During the optimum design, the analytic file is established with ANSYS command code. At last, we find a good result about the Top Bracket.Based on the optimum design result, we manufacture the Top Bracket on CNC vertical machining center. The code in machining center is provided by the NC model and back processing in Pro/E. Before manufacturing, we simulate the process on computer.Finite Element Analysis (FEA) is a fast and efficient design tool in modern engineering design. It is important that it can help improve the functions and qualities of the product, reduce the production cost and avoid the repetitious reach work for a new product development, if it is applied to structural analysis and optimum design. So it is necessary to apply the computer simulation research in AMS-02 which is an international large project.