Numerical prediction of notch bluntness effect on fracture resistance of SM490A carbon steel

Gyo Geun Youn, Ji Soo Kim, Yun Jae Kim, Masayuki Kamaya

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The present work investigates the notch radius effect on fracture resistance using the finite element (FE) damage analysis based on the multiaxial fracture strain model. The damage model was determined from experimental data of notched bar tensile and fracture toughness test data using a sharp-cracked compact tension specimen. Then, the FE damage analysis was applied to simulate fracture resistance tests of SM490A carbon steel specimens with different notch radii. Comparison of simulated results with experimental data showed good agreement. Further simulation was then performed to see effects of the specimen size, thickness, and side groove on J-R curves for different notch radii. It was found that effects of the specimen size and thickness became more pronounced for the larger notch radius. Furthermore, it was found that without side groove, tearing modulus for notched specimens was similar to that for cracked specimens, regardless of the notch radius.

本文言語English
ページ(範囲)660-671
ページ数12
ジャーナルFatigue and Fracture of Engineering Materials and Structures
43
4
DOI
出版ステータスPublished - 2020 4月 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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