Type of Document	Master's Thesis
Author	Girardin, Benoit
URN	etd-09052009-041041
Title	Contact stress analysis and fatigue life prediction for a cam-roller follower system
Degree	Master of Science
Department	Engineering Science and Mechanics
Advisory Committee	Advisor Name Title Landgraf, Ronald W. Committee Chair Eiss, Norman S. Jr. Committee Member Loos, Alfred C. Committee Member Meirovitch, Leonard Committee Member
Keywords	fatigue life prediction
Date of Defense	1994-06-05
Availability	restricted
Abstract An analytical treatment of the fatigue performance of a cam-roller followler system as influenced by residual stresses induced by grinding, is developed. An approach based on an extended Hertzian analysis is used to determine the 3-D contact stress fields, which are then combined by elastic superposition with the residual stress fields. These residual stresses were measured previously by the x-ray diffraction technique and represent a range of grinding protocols from mild to abusive. The maximum cyclic component, generally occurring subsurface, is then identified in terms of an effective stress amplitude and mean which are used with a fatigue damage model to predict fatigue crack initiation. Results, pending experimental confirmation, appear reasonable and provide a useful basis for optimizing cam performance in terms of manufacturing and design parameters.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  LD5655.V855_1994.G573.pdf 2.79 Mb 00:12:56 00:06:39 00:05:49 00:02:54 00:00:14 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

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