COMPARED STUDY MULTIBODY SYSTEMS DYNAMIC ANALYSIS OF LRT CARS.

• Main Author: ALVIN ANDRIYANTO, FRANSISKUS
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/27399
• Institution: Institut Teknologi Bandung

<p align="justify">Light Rapid Transit (LRT) is a light weight train which hopefully could solve mobility and traffic problems in Indonesia. PT INKA as BUMN which fieald in the railway industry have reponsibility to design LRT that suits people need. In the end of LRT design process, analysis of LRT is required to ensure that LRT are safe and comfortable enough on its operated condition <br /> <br /> All this time, software that PT INKA used for design process is Universal Mechanism. Along the time, a lot of new software appear in the market. ITB as a techology based university, have a licensed of multibody software SIMPACK. To evaluate SIMPACK, the author performs dynamic analysis using SIMPACK software to be compared with results obtained from UM. Validation of the LRT train model is carried out by static and eigenvalue analysis with theoritical calculation, before performing dynamic analysis. <br /> <br /> Normal force on each wheel has the same value as the theoritical calculations. In addition, the value of the natural frequency on vertial direction is also same with theoritical calculations. Therefore, LRT train modeled is valid for dynamic analysis. Stability evaluation on straight track produces a guidence force below the boundary value although there is a little different with UM value. Likewise, simulation on curving track, SIMPACK produces lateral force value and lateral vertical comparison value which is categorized safe according to Nadal criteria. Comfort is evaluated based on the Sperling Index. Model index value on vertical and lateral direction could be categorized as comfort for all speed ranges because worth below 2,5 (more pronouned but not unpleasant). The difference between SIMPACK and UM results is due to the different properties of force elemen model. <br /> <br /> Based on a lot of things discussed above, SIMPACK has an excellent potential to be used for vehicle multibody system dynamic analysis.<p align="justify">