Please use this identifier to cite or link to this item:
Title: Vibration problem of rotating machineries at high rpm
Authors: Anjula Pam Naidu
Keywords: DRNTU::Engineering::Mechanical engineering::Kinematics and dynamics of machinery
Issue Date: 2010
Abstract: High speed machining is evident today. The need to go faster is critical in saving time, as well as ensuring quality and accuracy. Air bearings have been integrated into high speed drilling and milling machines. Determining maximum rotational speeds that the rotor can withstand without going to resonance is still unknown. Predicting the maximum speed without the actual occurrence of vibration is needed. In this report, a testing apparatus, which has some resemblance to rotor housing, is designed and fabricated for analysis of change in height due to addition of weight. Firstly, extensive literature review was conducted to understand the behaviour of air bearings in a rotor system. Secondly, conceptual designs for a test rig were generated before the final design was chosen and fabricated. Extensive trial and analysis were conducted to consolidate useful data. Finally, analytical calculations were performed with equations found from books and research papers with the intention to predict bearing stiffness mathematically. The success of formulating an equation is discussed at the end of this report.
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
  Restricted Access
4.4 MBAdobe PDFView/Open

Page view(s) 50

Updated on Nov 26, 2020


Updated on Nov 26, 2020

Google ScholarTM


Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.