TY - JOUR

T1 - Effect of plate width-thickness ratio on elastic-plastic J-integral of semi-elliptical surface cracked plate under tension

T2 - 1. Limitation of existing J-integral estimation equation

AU - Shin, Ji Su

AU - Gim, Jae Min

AU - Kim, Yun Jae

N1 - Publisher Copyright:
© 2020 The Korean Society of Mechanical Engineers.

PY - 2020

Y1 - 2020

N2 - In this study, the elastic-plastic J of a tension-loaded plate with a semi-elliptical surface crack was calculated using finite element (FE) analysis. The results were then compared with those obtained using the existing J-integral estimation equation. To analyze the effect of the plate width-to-thickness ratio on J, a wide range of plate width-to-thickness ratio were considered. It was found that the existing estimation equation can predict J-integral within a small margin of error when the plate width-to-thickness is small. However, as the plate width-to-thickness ratio increases, the margin of error increases up to 3.5 times the estimated J.

AB - In this study, the elastic-plastic J of a tension-loaded plate with a semi-elliptical surface crack was calculated using finite element (FE) analysis. The results were then compared with those obtained using the existing J-integral estimation equation. To analyze the effect of the plate width-to-thickness ratio on J, a wide range of plate width-to-thickness ratio were considered. It was found that the existing estimation equation can predict J-integral within a small margin of error when the plate width-to-thickness is small. However, as the plate width-to-thickness ratio increases, the margin of error increases up to 3.5 times the estimated J.

KW - Finite element analysis

KW - J-estimation equation

KW - J-integral

KW - Reference stress method

KW - Semi-elliptical surface crack

UR - http://www.scopus.com/inward/record.url?scp=85102401222&partnerID=8YFLogxK

U2 - 10.3795/KSME-A.2020.44.10.717

DO - 10.3795/KSME-A.2020.44.10.717

M3 - Article

AN - SCOPUS:85102401222

VL - 44

SP - 717

EP - 723

JO - Transactions of the Korean Society of Mechanical Engineers, A

JF - Transactions of the Korean Society of Mechanical Engineers, A

SN - 1226-4873

IS - 10

ER -