Document Details Document Type : Article In Journal  Document Title : Startup Dynamic Behavior of a Jeffcott Rotor السلوك الديناميكي لعمود جفكوت   Subject : Mechanical Engineering  Document Language : English  Abstract : (In this study dynamic behavior of a Jeffcott rotor during startup is analyzed. Equations of a Jeffcott rotor model are obtained assuming that rotor speed is not constant. Startup speed is assumed as having second order control system transfer function. Numerical calculations show that maximum whirl radius is reached before the rotor reaches to the critical speed if the rotor is running subcritical. Maximum whirl radius is reached after the rotor passes the critical speed if the rotor is running supercritical. Overshoot of the startup speed significantly increases the value of maximum whirl radius. It is also observed that, for supercritical startup, whirl radius has a cyclic behavior before it reaches to a steady state value.)  ISSN : 1027-5851  Journal Name : International Journal of Acoustics and Vibration  Volume : 10  Issue Number : 2  Publishing Year : 1425 AH 2005 AD  Article Type : Article  Added Date : Wednesday, April 6, 2011  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email حمزة ديكن Diken, Hamza Investigator Doctorate hdiken@yahoo.com خالد عبدالله النفيعي Alnefaie, Khaled Abdullah Researcher Doctorate kalnefaie@kau.edu.sa Files File Name Type Description  29576.pdf pdf Startup Dynamic Behavior of a Jeffcott Rotor Back To Researches Page