Title page for ETD etd-22098-16610


Type of Document Master's Thesis
Author Griffin, Timothy R.
Author's Email Address tigriffi@vt.edu
URN etd-22098-16610
Title Computer-Aided Design Software for Torsional Analysis
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Mitchell, Larry D. Committee Chair
Mitchiner, Reginald G. Committee Member
West, Robert L. Jr. Committee Member
Keywords
  • Transfer Matrix
  • Multi-Rotor
  • Planetary Gear Train
  • Torsion
  • Eigenvalues
  • Forced Response
Date of Defense 1998-03-05
Availability unrestricted
Abstract
The goal of this research has been the development of an effective design tool for

torsional analysis. In the hopes of achieving this goal the computer program, Torsion 1,

has been created. This torsional transfer matrix program provides the user with the

ability to easily model multi-rotor systems using a simple user-interface. The program is

capable of modeling such components or system characteristics as continuously

distributed mass, viscous and structural damping, vibration absorbers, and gear meshes

with gear tooth flexibility. The analysis capabilities of the program include forced-response

and free-vibration analyses. The forced-response analysis module is capable of

determining a system's response to a static or harmonic torsional load. The free-vibration

analysis module allows is capable of determining the eigenvalues and eigenvectors for

damped and undamped systems. This thesis includes an explanation of the multi-rotor

transfer matrix technique employed in Torsion 1. The derivation of transfer matrices for

visco-elastic vibration absorbers, pendulum absorbers, flexible gear meshes, and

planetary gear trains are included in this work. Finally, the validity of the program

results is verified with a set of benchmark examples.

Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  etd.PDF 685.80 Kb 00:03:10 00:01:37 00:01:25 00:00:42 00:00:03

Browse All Available ETDs by ( Author | Department )

dla home
etds imagebase journals news ereserve special collections
virgnia tech home contact dla university libraries

If you have questions or technical problems, please Contact DLA.