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http://dx.doi.org/10.5228/KSPP.2008.17.4.292

Analysis of an Autofrettage Effect to Improve Fatigue Life of the Automotive CNG Storage Vessel  

Kim, H.Y. (부산대학교 기계기술연구원)
Hwang, B.C. (부산대학교 기계기술연구원)
Bae, W.B. (부산대학교 기계공학부)
Han, S.M. (경희대학교 동서의료공학과)
Kim, C. (부산대학교 기계기술연구원)
Publication Information
Transactions of Materials Processing / v.17, no.4, 2008 , pp. 292-301 More about this Journal
Abstract
Type 2 compressed natural gas(CNG) storage vessels for automobiles are becoming widely used. They are not only supplied to automakers in Korea, such as Hyundai Motors, but increasingly, they are being exported overseas. Autofrettage is a process that produces beneficial residual stresses in a vessel by subjecting it to excessive internal pressure. This strengthens the vessel and improves its fatigue resistance. This paper presents research investigating the autoftettage process and residual stresses it produces in type 2 CNG storage vessels. A finite element analysis technique and a closed form equation are used. Then, fatigue resistance is analyzed through a fatigue evaluation performed according to ASME section VIII.
Keywords
CNG; Storage Vessel; Autofrettage; Fatigue Life;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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