本文主要研究三維車輛於軌道橋梁上之運動分析方法,並且以Fortran程式語言撰寫數值模擬分析程式。車輛於軌道橋梁上運動軌跡模擬方法,以及結合剛體與向量式有限元(Vector Form Intrinsic Finite Element , VFIFE或V-5)彈簧元素所建立之車輛模型為研究重點與計算核心技術。此外,車輛與軌道橋梁系統之前期處理與仿真車軌橋輸出模型亦是重點研究項目。本文中車輛模型最大特點在於,程式使用者可任意建立複雜車輛懸吊系統,不需要事先推導車輛運動方程式,而且剛體可以是任意幾何外型。車輛於軌道上運行方向是以位移控制方法來進行模擬,不但可模擬車輛於曲軌,亦可模擬爬升段等運動行為,經由數值分析結果證明了數值模擬分析程式精確性。
In this study, the main purpose is to develop a numerical program of three-dimension train-rail-bridge interaction simulation. This program can be used to simulate the motion vehicle on the rail-bridge. It is important for the simulation method of the motion vehicle, and the vehicle model represents the rigid bodies and spring elements using vector form intrinsic finite element (VFIFE, V-5). This method and model are the core technology. In addition, the pre-processor and post-processor are developed. In this study, the vehicle model is characterized by the program user can use arbitrarily shape for rigid body and easily build the vehicle suspension systems. The displacement control (DC) for wheels. According to the numerical results, it confirms the effective and accurate of this numerical program.