STATIC AND CYCLIC STRESS ANALYSIS OF LRT JABODEBEK POWERED AXLE

• Main Author: Luhur Pambudi, Prihandaru
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/56446
• Institution: Institut Teknologi Bandung

The high number of population in the big cities demands easy and fast transportation access. The need for transportation access is increasing when the commuters from neighboring cities around the big city are commuting at the beginning and at the end of the day. It generates traffic congestion problem. LRT (Light Rail Transit) Jabodebek is one of the solutions for the traffic congestion problem in Greater Jakarta since it has high passenger capacity and its own way which does not intersect the main roads. LRT-Jabodebek is the second LRT project in Indonesia after LRT-Palembang. Both of them look almost the same. However, both of them are operated on different railroad gauge. LRT-Jabodebek axles have new and distinctive design. An analysis of the strength of LRT-Jabodebek axles with its new design can be performed. The strength of LRT-Jabodebek powered axles is analyzed by following the guideline according to the international standard, BS 8535: 2011 and EN 13104: 2001. The analysis is started by collecting the data about the design, the specification, and the operational condition. Afterwards, the operational loads, the forces, the moments, and the maximum stresses are manually calculated and simulated using the software of Ansys 18.1. The maximum stresses are compared to the yield strength and the endurance limit of 34CrNiMo6 alloy steel as the material of the axle to obtain the factor of safety. It is also compared to the criteria of the standards for validation. The maximum stress due to operational load is around 95,838 MPa and 99,714 MPa. The factor of safety against the yield strength of the axle material is around 7,02 and 7,30. The factor of safety against the endurance limit of the axle material is around 3,126 and 3,253. Based on the analysis process, it can be concluded that the actual value of the maximum stress is under the maximum-permissible-fatigue-stress and the LRT-Jabodebek powered-axle design is safe and it has met the criteria required by the international standard.