| Summary: | 碩士 === 國立屏東科技大學 === 車輛工程系所 === 105 === In this thesis, a parametric study on the lightweight design analysis process for a railway bogie frame is proposed. The lightweight analysis process combines topology optimization analysis, parametric optimization analysis and finite element model analysis. The bogie of a Taiwan railway electric multiple (EMU) train is used as a reference.Therefore, the designed weight of the bogie frame is set to be less than 1440 kg.
In this research, the optimization software TOSCA and Isight are used for the topology optimization analysis and parametric optimization analysis of the bogie frame, respectively. Three-dimensional elastic-plastic finite element models are proposed for strength and fatigue life analysis of the bogie frame. Three types of bogie are proposed in this study. The weights obtained from the lightweight analysis process for Type-A, Type-B and Type-C bogie are 1389.5 kg, 1239.8 kg and 1316.2 kg, respectively. According to European standard EN-13749, the corresponding maximum von-Mises stresses obtained from the proposed finite element model for the three types of bogie are lower than the yielding stress of the material used in bogie frame. The results also show that the fatigue life of the proposed bogies are larger than 1×107 for train running at track class 6, 5 with train speed below 130 km/h and subjected to the load cases according with European standard EN-13749. The results obtained from the fatigue analysis show that the proposed bogie frame can satisfy the required specifications of EN-13749.
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