Fatigue assessment of piston rod threaded end

Fatigue assessment of piston rod threaded end

The present paper deals with the research on the influence of different thread type on the piston rod fatigue life. Research was done on hydraulic cylinder piston rod, which becomes subjected to fatigue failures after change of its design. Previously used piston rods used M74 × 3 threads, but redesi...

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Bibliographic Details
Published in:Engineering failure analysis Vol. 16; no. 6; pp. 1977 - 1982
Main Authors: Knez, M., Glodež, S., Kramberger, J.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-09-2009
Subjects:
Fatigue life
Thread fatigue
Thread geometry
Thread pitch
Thread fatigue
Fatigue life
Thread pitch
Thread geometry
Online Access:Get full text
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Summary:The present paper deals with the research on the influence of different thread type on the piston rod fatigue life. Research was done on hydraulic cylinder piston rod, which becomes subjected to fatigue failures after change of its design. Previously used piston rods used M74 × 3 threads, but redesigned rods are compromising M76 × 2. Due to changes in thread type the supplier was convinced that changes will affect lowering stresses in thread core which is true, but they have overlooked the fact that lowering the pitch will also lead to lowering the thread root radius which leads to the significant rise of stress concentration and therefore lower the fatigue life.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1350-6307
1873-1961
DOI:10.1016/j.engfailanal.2008.10.003