Modeling, Testing, and Analyzing of Torsional Vibration Upon Rotor-Shaft Testing System Device

• Main Author: ARSTIANTI (NIM 13104123), HALEYNA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/10538
• Institution: Institut Teknologi Bandung

Vibration occurred at a machine can be in the form of translation and rotation. The vibration occurred in rotation direction commonly identified as torsional vibration. Torsional vibration can cause fatigue damage to the shaft, coupling, as well as gear system. In Dynamic Laboratory, research about torsional vibration has not been done. This encourage Dynamic Laboratory to do research about torsional vibration of rotor-shaft system using flexible coupling. In this examination, modeling, testing, and torsional vibration analysis of a rotor-shaft system will be carried out. The test in this research includes the FRF test (Frequency Respon Function) as well as spectral map test consisting of lateral and torsional spectral map. The spectral map in lateral direction to investigate the possibility of the occurrence of cross-coupling phenomenon between lateral and torsional vibrations. Meanwhile, the spectral map measurement in torsional direction was conducted to perceive the torsional dynamic characteristics of the rotor-shaft system. The results of lateral spectral map testing did not indicate any existence of cross-coupling phenomenon between lateral and torsional vibration, while the results of torsional spectral map testing indicates that the characteristics of the torsional vibration are similar to those of lateral vibration. Furthermore, the results of torsional spectral map indicated that the torsional vibration level depended on the type of flexible coupling used. The torsional vibration level on hose coupling is higher than that of jaw coupling.