STATIC AND CYCLIC STRESS ANALYSIS OF LRT JABODEBEK POWERED AXLE
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 pr...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/56446 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | 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.
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