DYNAMIC INTERACTION SIMULATION OF PASSENGER TRAIN MODEL AND WARREN TRUSS BRIDGE USING COMPUTATIONAL APPROACH

• Main Author: Satria Irsyad, Dwi
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/83064
• Institution: Institut Teknologi Bandung

The problem when a train crosses a bridge is that vibrations appear in the train and bridge. These vibrations occur due to interactions between trains, rails and bridges which are influenced by several factors. In general, these factors are the operating speed of the train and the characteristics of the bridge. This vibration phenomenon has the potential to damage trains, rails and bridge structures. To determine the dynamic response that occurs when a train crosses a bridge, modeling can be carried out using numerical methods based on finite element methods and multibody systems. In this method, the bridge is modeled as a system of flexible bodies in Ansys finite element method software. The bridge model that has been created is then verified by static load testing. The verified model is the integrated with the train model in the Universal Mechanism multibody system software. Next, model settings are carried out in UM Input and UM Simulation and dynamic simulations are carried out. Based on the simulation and analysis result, it was concluded that the mass of the train, its speed, track irregularities, and the number of trains affect the dynamic interaction response between the train and the bridge. Increased train mass results in higher vibration amplitude for both the bridge and the train. Conversely, higher train speeds lead to reduced vibration amplitude on both the bridge and the train. More severe track irregularities notably increase vibration amplitude. Moreover, increasing the number of trains in a series also escalates vibration intensity.