Slip Line Field Analysis of Unequally Grooved Specimens in Bending and Its Implication to Constraint Toughness Testing

Abstract:

This paper proposes slip line fields for bending of unequally grooved specimens that has a sharp crack in one side and a sharp V-notch in the other side. Depending on the back angle, two slip line fields are proposed, from which the limit moment and crack tip stress fields are obtained as a function of the back angle. Excellent agreements between slip line field solutions with those from detailed finite element limit analysis based on non-hardening plasticity provide confidence in the proposed slip line fields. Based on these results, possibility of designing a new toughness testing specimen with varying crack tip constraint is discussed.

• Periodical: Key Engineering Materials (Volumes 306-308)
• Pages: 25-30
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.306-308.25
• Online since: March 2006
• Authors: Yun Jae Kim, Chang Gyun Oh
• Keywords: FE Limit Analysis, Slip Line Field Analysis, Unequally Grooved Specimen

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