TY - JOUR
T1 - Fully plastic crack opening analyses of complex-cracked pipes for Ramberg-Osgood materials
AU - Jeong, Jae Uk
AU - Choi, Jae Boong
AU - Huh, Nam Su
AU - Kim, Yun Jae
N1 - Publisher Copyright:
© 2016, The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - The plastic influence functions for calculating fully plastic Crack opening displacement (COD) of complex-cracked pipes were newly proposed based on systematic 3-dimentional (3-D) elastic-plastic Finite element (FE) analyses using Ramberg-Osgood (R-O) relation, where global bending moment, axial tension and internal pressure are considered separately as a loading condition. Then, crack opening analyses were performed based on GE/EPRI concept by using the new plastic influence functions for complex-cracked pipes made of SA376 TP304 stainless steel, and the predicted CODs were compared with FE results based on deformation plasticity theory of tensile material behavior. From the comparison, the confidence of the proposed fully plastic crack opening solutions for complex-cracked pipes was gained. Therefore, the proposed engineering scheme for COD estimation using the new plastic influence functions can be utilized to estimate leak rate of a complex-cracked pipe for R-O material.
AB - The plastic influence functions for calculating fully plastic Crack opening displacement (COD) of complex-cracked pipes were newly proposed based on systematic 3-dimentional (3-D) elastic-plastic Finite element (FE) analyses using Ramberg-Osgood (R-O) relation, where global bending moment, axial tension and internal pressure are considered separately as a loading condition. Then, crack opening analyses were performed based on GE/EPRI concept by using the new plastic influence functions for complex-cracked pipes made of SA376 TP304 stainless steel, and the predicted CODs were compared with FE results based on deformation plasticity theory of tensile material behavior. From the comparison, the confidence of the proposed fully plastic crack opening solutions for complex-cracked pipes was gained. Therefore, the proposed engineering scheme for COD estimation using the new plastic influence functions can be utilized to estimate leak rate of a complex-cracked pipe for R-O material.
KW - Complex crack
KW - Crack opening displacement
KW - Finite element analysis
KW - GE/EPRI method
KW - Plastic influence functions
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U2 - 10.1007/s12206-016-0311-6
DO - 10.1007/s12206-016-0311-6
M3 - Article
AN - SCOPUS:84963535744
SN - 1738-494X
VL - 30
SP - 1563
EP - 1572
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 4
ER -