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- Title
Reliability analysis of process-induced cracks in rotary swaged shell nose part.
- Authors
Jang, Jeong-hwan; Kwon, Won-hee; Chun, Se-hwan; Moon, Young-hoon
- Abstract
The rotary swaging process is a cold working process used to reduce the diameter, produce a taper or add point to a round workpiece. For the preform design of a swaged shell nose part by a rotary swaging process, finite element simulation and experimental verification have been carried out to obtain a shell body nose of desired quality. Reliability analysis for the occurrence of process-induced cracks is performed by fault tree analysis. The various process parameters such as initial nose thickness, feed distance and reduction diameter are applied for the fault tree in order to obtain the desired target dimensions. Through simulation, the effects of initial nose thickness on the swaged shapes are analyzed. With fault tree analysis, the risk of process-induced cracks was predicted by finite element simulation and the crack occurrence was verified by swaging experiment. The results show that a swaged shell nose part having higher reliability can be successfully produced by rotary swaging process.
- Subjects
FRACTURE mechanics; SWAGING; NOSES (Aircraft); COLD working of metals; WORKPIECES; FINITE element method; COMPUTER simulation; STRUCTURAL shells
- Publication
Journal of Mechanical Science & Technology, 2012, Vol 26, Issue 7, p2155
- ISSN
1738-494X
- Publication type
Article
- DOI
10.1007/s12206-012-0535-z