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http://dx.doi.org/10.3795/KSME-A.2002.26.8.1672

Engineering J-Integral Estimation for Internal Axial Surface Cracks in Cylinders (I) -Deformation Plasticity Based Estimation-  

Kim, Jin-Su (Dept.of Mechanical Engineering, Sungkyunkwan University)
Kim, Yun-Jae (Dept.of Mechanical Engineering, Sungkyunkwan University)
Park, Yeong-Jae (Dept.of Mechanical Engineering, Sungkyunkwan University)
Kim, Yeong-Jin (Dept.of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.26, no.8, 2002 , pp. 1672-1679 More about this Journal
Abstract
This paper provides an engineering J estimation equation for cylinders with finite internal axial surfacecracks under internal pressure. The proposed equation is the J estimation equation based on deformation plasticity using Ramberg-Osgood (R-O) materials. Based on detailed 3-D FE results using deformation plasticity, plastic influence functions for fully plastic J components are tabulated for practically interesting ranges of the mean radius-to-thickness ratio, the crack depth-to-length ratio, the crack depth-to-thickness ratio. the strain hardening index for the R-O material, and the location along the semi-elliptical crack front. Based on tabilated plastic influence functions, the J estimation equation along the crack front is proposed and validated for R-O materials. Good agreements between the FE results and the proposed J estimation provide confidence in the use of the proposed method to elastic-plastic fracture mechanics of pressurized piping.
Keywords
Axial Surface Crack; J Estimation; Finite Element Analysis; Deformation Plasticity; Ramberg-Osgood.;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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