TY - GEN
T1 - Plastic limit pressures of circumferential cracked pipe bends
AU - Hong, Seok Pyo
AU - Kim, Jong Hyun
AU - Kim, Yun Jae
PY - 2008
Y1 - 2008
N2 - This paper provides limit pressures for circumferential cracked pipe bends, resulting from systematic, small strain FE limit analyses using elastic-perfectly plastic materials. Circumferential through-wall and constant-depth part-through surface cracks at both extrados and intrados are considered, but the length of circumferential through-wall cracks is limited to 50% of the circumference. It is found that limit pressures of pipe bends are not affected by the presence of the circumferential surface crack, unless it is sufficiently deep and long. Moreover limit pressures for circumferential surface cracked pipe bend decrease almost linearly with increasing a/t and . Based on FE results, approximate closed-form solutions for limit pressures are given.
AB - This paper provides limit pressures for circumferential cracked pipe bends, resulting from systematic, small strain FE limit analyses using elastic-perfectly plastic materials. Circumferential through-wall and constant-depth part-through surface cracks at both extrados and intrados are considered, but the length of circumferential through-wall cracks is limited to 50% of the circumference. It is found that limit pressures of pipe bends are not affected by the presence of the circumferential surface crack, unless it is sufficiently deep and long. Moreover limit pressures for circumferential surface cracked pipe bend decrease almost linearly with increasing a/t and . Based on FE results, approximate closed-form solutions for limit pressures are given.
KW - Circumferential part-through surface and through-wall cracks
KW - Finite element limit analysis
KW - Limit pressure
KW - Pipe Bend
UR - http://www.scopus.com/inward/record.url?scp=84866073130&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:84866073130
SN - 9781617823190
T3 - 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
SP - 2555
EP - 2562
BT - 17th European Conference on Fracture 2008
T2 - 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
Y2 - 2 September 2008 through 5 September 2008
ER -