Ticket Vending Machine The Whole Structure Of Finite Element Analysis And Optimization Design

The structure of TVM(Ticket Vending Machine) has been researched by finite element method and structure optimization design in this thesis.Based on the characteristics and working conditions of TVM with front door, the finite element model is constructed, the static analysis, topology optimization, modal analysis, transient response analysis and frequency response analysis of the model are carried out with FEA method. Then improved design is put forward.The main research contents and results are as follows:1) According to the real model of TVM and the theory of finite element, the solid model has been logically simplified, including front door, hinge, body and rear door, then the complex structure are modeled by software HyperMesh.2) The static analysis of TVM is accomplished to obtain stress and displacement parameters of the key parts. Based on the results of analysis and the real production condition, some useful suggestions are proposed to reduce the displacement of front door by 50%.3) Topology optimization of the front door frame and equipment bracket is analyzed in order to lighten the weight by optimization software Optistruct, Comparing with its quality before and after optimization, the conclusion indicates that the weight of frame and bracket have decreased by 21.6% and 13% respectively.4) Natural frequency and vibrancy are retrieved by modal analysis of structure, then in light of the data from the above analysis, the structure is modified, and the phenomenon of resonance of TVM is avoided successfully under the running condition.of subway.5) Transient response analysis and frequency response analysis of TVM are conducted under the condition of vibration and impact of subway station, the stress-time and displacement-time history and frequency response curve of displacement and acceleration are evaluated.