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September 5, 2026International Journal of FractureOpen Access

Numerical study on geometric constraint effects on ductile fracture toughness of thin advanced high-strength steel sheet

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Authors

ITI. TarhouniPMP. MaimiTVT. Venant

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Overview

Numerical and experimental analysis reveals thickness-dependent energy dissipation during ductile tearing in advanced high-strength steel, indicating critical geometric limits for fracture resistance.

Key Points

  • To investigate how sheet thickness and ligament length govern individual energy dissipation components during ductile tearing under the essential work of fracture framework.
  • Evaluated ligament length effects experimentally and numerically across conventional and small-ligament regimes using the essential work of fracture methodology.
  • Simulated sheet thickness variations numerically and introduced a local energy metric within the fracture process zone to determine necking height.
  • Necking work per unit area increased with sheet thickness up to a critical threshold before decreasing, even though thinner specimens underwent more severe localized necking.
  • Linear extrapolation of the essential work of fracture in the small-ligament regime produced fracture energy values that directly depended on sheet thickness.

Cite This Study

Tarhouni et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd48c6b95aff0620ec531https://doi.org/10.1007/s10704-026-00942-x
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