Approximate J estimates for tension-loaded plates with semi-elliptical surface cracks

Yun Jae Kim, Do Jun Shim, Jae Boong Choi, Young Jin Kim

研究成果: Article

26 引用 (Scopus)

抄録

This paper provides a simplified engineering J estimation method for semi-elliptical surface cracked plates in tension, based on the reference stress approach. Note that the essential element of the reference stress approach is the plastic limit load in the definition of the reference stress. However, for surface cracks, the definition of the limit load is ambiguous ("local" or "global" limit load), and thus the most relevant limit load (and thus reference stress) for the J estimation should be determined. In the present work, such limit load solution is found by comparing reference stress based J results with those from extensive 3-D finite element (FE) analyses. Based on the present FE results, the global limit load solution proposed by Goodall for surface cracked plates in combined bending and tension was modified. in the case of tension loading only, to account for a weak dependence on w/c and was defined as the reference normalizing load. Validation of the proposed equation against FE J results based on actual experimental tensile data of a 304 stainless steel shows excellent agreements not only for the J values at the deepest point but also for those at an arbitrary point along the crack front, including at the surface point. Thus the present results provide a good engineering tool for elastic-plastic fracture analyses of surface cracked plates in tension.

元の言語English
ページ(範囲)1447-1463
ページ数17
ジャーナルEngineering Fracture Mechanics
69
発行部数13
DOI
出版物ステータスPublished - 2002 9 1
外部発表Yes

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Load limits
Cracks
Plastics
Stainless Steel
Stainless steel

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Approximate J estimates for tension-loaded plates with semi-elliptical surface cracks. / Kim, Yun Jae; Shim, Do Jun; Choi, Jae Boong; Kim, Young Jin.

:: Engineering Fracture Mechanics, 巻 69, 番号 13, 01.09.2002, p. 1447-1463.

研究成果: Article

Kim, Yun Jae ; Shim, Do Jun ; Choi, Jae Boong ; Kim, Young Jin. / Approximate J estimates for tension-loaded plates with semi-elliptical surface cracks. :: Engineering Fracture Mechanics. 2002 ; 巻 69, 番号 13. pp. 1447-1463.
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