Title
Failure of an internally threaded structure: the valve centre spool
Abbreviated Journal Title
Proc. Inst. Mech. Eng. Part C-J. Eng. Mech. Eng. Sci.
Keywords
internally threaded centre-spool; valves; brittle fracture; stress; intensity factor; failure criterion; STRESS-CONCENTRATION FACTORS; INTENSITY FACTORS; CONNECTIONS; CRACK; Engineering, Mechanical
Abstract
The failure of the internally threaded centre spool of large valves is investigated. Brittle fracture occurred at the root of the internally threaded area. Several visual tests were performed. Visual investigation shows that the failure occurs on the last thread engaged with the bolt. Primary finite element method analysis shows that the last thread root has the highest stress concentration and opening mode of fracture mechanics. Redesign optimization and a parametric study are carried out. Reduction of the stress concentration is achieved and so the fracture is prevented.
Journal Title
Proceedings of the Institution of Mechanical Engineers Part C-Journal of Mechanical Engineering Science
Volume
216
Issue/Number
12
Publication Date
1-1-2002
Document Type
Article
Language
English
First Page
1157
Last Page
1163
WOS Identifier
ISSN
0954-4062
Recommended Citation
"Failure of an internally threaded structure: the valve centre spool" (2002). Faculty Bibliography 2000s. 3038.
https://stars.library.ucf.edu/facultybib2000/3038
Comments
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