TY - JOUR
T1 - Closed-form plastic collapse loads of pipe bends under combined pressure and in-plane bending
AU - Kim, Yun Jae
AU - Oh, Chang Sik
N1 - Funding Information:
This research performed under the program of Basic Atomic Energy Research Institute (BAERI) which is a part of the Nuclear R&D Programs funded by the Ministry of Science and Technology (MOST) of Korea.
PY - 2006/7
Y1 - 2006/7
N2 - Based on three-dimensional (3-D) FE limit analyses, this paper provides plastic limit, collapse and instability load solutions for pipe bends under combined pressure and in-plane bending. The plastic limit loads are determined from FE limit analyses based on elastic-perfectly-plastic materials using the small geometry change option, and the FE limit analyses using the large geometry change option provide plastic collapse loads (using the twice-elastic-slope method) and instability loads. For the bending mode, both closing bending and opening bending are considered, and a wide range of parameters related to the bend geometry is considered. Based on the FE results, closed-form approximations of plastic limit and collapse load solutions for pipe bends under combined pressure and bending are proposed.
AB - Based on three-dimensional (3-D) FE limit analyses, this paper provides plastic limit, collapse and instability load solutions for pipe bends under combined pressure and in-plane bending. The plastic limit loads are determined from FE limit analyses based on elastic-perfectly-plastic materials using the small geometry change option, and the FE limit analyses using the large geometry change option provide plastic collapse loads (using the twice-elastic-slope method) and instability loads. For the bending mode, both closing bending and opening bending are considered, and a wide range of parameters related to the bend geometry is considered. Based on the FE results, closed-form approximations of plastic limit and collapse load solutions for pipe bends under combined pressure and bending are proposed.
KW - Collapse load
KW - Combined pressure and in-plane bending
KW - Finite element limit analysis
KW - Instability load
KW - Large geometry change
KW - Limit load
KW - Pipe bend
KW - Small geometry change
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U2 - 10.1016/j.engfracmech.2006.02.001
DO - 10.1016/j.engfracmech.2006.02.001
M3 - Article
AN - SCOPUS:33646489960
SN - 0013-7944
VL - 73
SP - 1437
EP - 1454
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
IS - 11
ER -