TY - JOUR
T1 - Tabulated solutions of stress intensity factor and elastic crack opening displacement for elbow joints with practical through-wall cracks
AU - Kim, Minkyu
AU - Kim, Jaehee
AU - Choi, Jae Boong
AU - Huh, Nam Su
AU - Kim, Kyunghoon
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2020/1
Y1 - 2020/1
N2 - Various fracture mechanics parameters should be considered for elbow design and leak-before-break assessment. In the case of a pipe with through-wall cracks (TWCs), the stress intensity factor (SIF) and elastic crack opening displacement (COD) are among the most important factors. Many studies have determined the SIF and elastic COD for idealized TWC straight and elbow pipes. However, no study has considered realistic crack geometries occurring in elbow joints. Thus, the objective of this study was to accurately predict the SIF and elastic COD of elbow joints by developing a three-dimensional finite element (FE) model for practical TWC (P-TWC). The developed FE model was then verified through comparisons with existing SIF and elastic COD solutions for idealized TWCs in elbow joints. In addition, tabulated solutions for the SIF and elastic COD were proposed by considering practical crack-geometry ranges and various loading conditions.
AB - Various fracture mechanics parameters should be considered for elbow design and leak-before-break assessment. In the case of a pipe with through-wall cracks (TWCs), the stress intensity factor (SIF) and elastic crack opening displacement (COD) are among the most important factors. Many studies have determined the SIF and elastic COD for idealized TWC straight and elbow pipes. However, no study has considered realistic crack geometries occurring in elbow joints. Thus, the objective of this study was to accurately predict the SIF and elastic COD of elbow joints by developing a three-dimensional finite element (FE) model for practical TWC (P-TWC). The developed FE model was then verified through comparisons with existing SIF and elastic COD solutions for idealized TWCs in elbow joints. In addition, tabulated solutions for the SIF and elastic COD were proposed by considering practical crack-geometry ranges and various loading conditions.
KW - Crack opening displacement (COD)
KW - Elbow joint
KW - Finite element (FE) analysis
KW - Practical through-wall crack (P-TWC)
KW - Stress intensity factor (SIF)
UR - http://www.scopus.com/inward/record.url?scp=85077162087&partnerID=8YFLogxK
U2 - 10.1016/j.ijpvp.2019.104030
DO - 10.1016/j.ijpvp.2019.104030
M3 - Article
AN - SCOPUS:85077162087
SN - 0308-0161
VL - 179
JO - International Journal of Pressure Vessels and Piping
JF - International Journal of Pressure Vessels and Piping
M1 - 104030
ER -