Proceedings of the Korean Society of Precision Engineering Conference (한국정밀공학회:학술대회논문집)
- 2002.10a
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- Pages.812-815
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- 2002
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- 2005-8446(pISSN)
Comparison with R Curve Behavior fer the K and J Parameter of structural Steel Hot-Rolled Thin Plates
일반구조용강 열간압연 박판의 K와 J 파라미터에 대한 R곡선 거동의 비교
Abstract
The shape of K-R curve for an ideally brittle material is flat because the surface energy is an unvaried material property. However, the K-R curve can take on a variety of shapes when nonlinear material behavior accompanies fracture. By the way, a general metallic material is nonlinear, structural steel is such. Therefore, the J-R curve form J-integral value instead of K parameters can be used to evaluate elastic-plastic materials with flaws in terms of ductile fracture that can be significant to design. In this paper, R-curve behaviors form K and J parameter is considered for the precise assessment of fracture analysis, in case of JS-SS400 steels.
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