TY - JOUR
T1 - Reference stress based J estimation formula for cracked cylinders with a wide range of radius-to thickness ratios
T2 - Part II- circumferential surface cracks
AU - Gim, Jae Min
AU - Shin, Ji Su
AU - Kim, Yun Jae
N1 - Funding Information:
This research was supported by National Research Foundation of Korea ( NRF ) grant funded by the Korea government ( Ministry of Science and ICT ) ( NRF-2016M2A8A1952771 and NRF-2019M2D2A2048296 ).
Funding Information:
This research was supported by National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT) (NRF-2016M2A8A1952771 and NRF-2019M2D2A2048296).
Publisher Copyright:
© 2020
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - In this paper, reference stress based J estimation equations are presented for circumferential constant-depth surface and through-wall cracked cylinders with the radius to thickness ratio ranging from three up to seventy. The equations are developed based on extensive finite element (FE) analysis results. Firstly it is shown that application of existing J estimation equations is limited to thick-walled cylinder problems and can give non-conservative J estimates for a cylinder with a large radius-thickness ratio. To accommodate the effects of the crack depth, length and the radius-to-thickness ratio, correction factors for the reference stress are proposed based on FE results. By comparing with FE results, it shows that the proposed solutions can be applied to both an external and internal crack; and to combined axial tension and global bending.
AB - In this paper, reference stress based J estimation equations are presented for circumferential constant-depth surface and through-wall cracked cylinders with the radius to thickness ratio ranging from three up to seventy. The equations are developed based on extensive finite element (FE) analysis results. Firstly it is shown that application of existing J estimation equations is limited to thick-walled cylinder problems and can give non-conservative J estimates for a cylinder with a large radius-thickness ratio. To accommodate the effects of the crack depth, length and the radius-to-thickness ratio, correction factors for the reference stress are proposed based on FE results. By comparing with FE results, it shows that the proposed solutions can be applied to both an external and internal crack; and to combined axial tension and global bending.
KW - Circumferential surface cracked cylinder
KW - Elastic-plastic J estimation
KW - Finite element analysis
KW - Reference stress approach
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U2 - 10.1016/j.ijpvp.2020.104176
DO - 10.1016/j.ijpvp.2020.104176
M3 - Article
AN - SCOPUS:85088877432
SN - 0308-0161
VL - 187
JO - International Journal of Pressure Vessels and Piping
JF - International Journal of Pressure Vessels and Piping
M1 - 104176
ER -