CRASHWORTHINESS OPTIMIZATION OF IMPACT ENERGY ABSORBING SYSTEM ON LIGHT RAIL TRANSIT (LRT)

• Main Author: Akhal Hilmi, Rija
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/71435
• Institution: Institut Teknologi Bandung

Light Rail Transit (LRT) is a new public transportation that are being developed in Indonesia. To ensure the passenger’s safety, the crash energy absorbing system on LRT must satisfy the requirement of crashworthiness, while the carbody on LRT must satisfy the requirement of static and dynamic loading. The regulations used as reference on this research are EN15227 for crashworthiness and PM 175:2015 for static loading validation on carbody. Base models used on this research are the frontal part and carbody of LRT. This research was conducted to optimize the crashbox components on LRT using Taguchi method, Analysis of Variance (ANOVA), and parametric study to obtain optimum SEA. In this optimization process, there are 3 control factors that will be varied, which are cell types, cell inclination from base angle, and column-web thickness. The optimization results showed the most optimum configuration by using horizontal single cell, without inclination, and thickness of 1 mm. The results obtained by re-testing model using parametric-optimized configuration show that the optimized design improves the performance significantly, which are 7.9 dB gain, 118.01% SEA increase, and 20.14% mass reduction.