Static and Fatigue Analysis of Axlebox for Light Rail Transit (LRT) Palembang

• Main Author: Sumantri Priasmoro, Machfudz
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/41928
• Institution: Institut Teknologi Bandung

Train as a public transportation has some advantages. First, it is having the ability to reduce traffic jam. Train also consumes relatively low energy, thus reducing global energy usage and reducing air pollution. It can also commute for long or short distance. Train consists of many parts, such as car body, bogie, axle, which are connected to each other. Axlebox is used to connect car body with bogie and also used to transfer forces from axle to car body. To minimize train energy usage, train should be designed to be light-weighted as much as possible. Thus, the material selection of train components becomes important because it affects the weight of train. In this case, the axlebox can be designed using aluminium material instead of cast iron. This final project aims to analyze and compare the mass, stress, factor of safety, and fatigue life of axlebox using cast iron and aluminum material. To analyze the strength and life of the axlebox, static and fatigue analysis are used. Simulations using ANSYS software are done to perform static analysis, thus obtaining the stress on the axlebox with different load cases according to EN 13749:2011. The obtained stress data can be used to calculate the factor of safety of each axlebox. Fatigue life of axlebox for load cases according to VDV 152:2016 can be obtained with fatigue analysis using nCode simulation. After simulations are done, the factor of safety for both aluminum and cast iron axlebox exceeds 1 and fulfills those in the standards. The minimum fatigue life for aluminium is 3.958×107 cycles and 4.774×1010 cycles for cast iron. Thus, it can also be concluded that aluminum axlebox can be considered to replace cast iron