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http://dx.doi.org/10.3795/KSME-A.2016.40.8.693

Fracture Mechanics Assessment for Different Notch Sizes Using Finite Element Analysis Based on Ductile Failure Simulation  

Bae, Keun Hyung (Dept. of Mechanical Engineering, Korea Univ.)
Jeon, Jun Young (Dept. of Mechanical Engineering, Korea Univ.)
Han, Jae Jun (Dept. of Mechanical Engineering, Korea Univ.)
Nam, Hyun Suk (Dept. of Mechanical Engineering, Korea Univ.)
Lee, Dae Young (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Yun Jae (Dept. of Mechanical Engineering, Korea Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.40, no.8, 2016 , pp. 693-701 More about this Journal
Abstract
In this study, notch defects are evaluated using fracture mechanics. To understand the effects of notch defects, FE analysis is conducted to predict the limit load and J-integral for middle-cracked and single-edge cracked plates with various sizes of notch under tension and bending. As the radius of the notch increases, the energy release rate also increases, although the limit load remains constant. The values of fracture toughness($J_{IC}$) of SM490A are determined for various notch radii through FE simulation instead of conducting an experiment. As the radius of the notch increases, the energy release rate also increases, together with a more significant increase in fracture toughness. To conclude, as the notch radius increases, the resistance to crack propagation also increases.
Keywords
Notch Defect; Notch Effect; Notch C(T); Virtual Testing Method; Damage Simulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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