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Voids Development in Metals: Numerical Modelling.

Wiktor Wciślik1, Sebastian Lipiec2

  • 1Faculty of Civil Engineering and Architecture, Kielce University of Technology, 25-314 Kielce, Poland.

Materials (Basel, Switzerland)
|July 29, 2023
PubMed
Summary
This summary is machine-generated.

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This review details numerical modeling of void nucleation, growth, and coalescence in ductile fracture. It highlights how computational methods, including the finite element method, advance understanding of microstructural damage mechanisms in metals.

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Computational Mechanics

Background:

  • Ductile fracture in structural metals is driven by void nucleation, growth, and coalescence.
  • Previous reviews covered fracture mechanisms; this paper focuses on numerical modeling of void development.

Purpose of the Study:

  • To review the literature on numerical modeling of void nucleation and development in ductile fracture.
  • To characterize various modeling approaches for void initiation and evolution.

Main Methods:

  • Review of numerical modeling techniques for void nucleation (e.g., around particles, crystal discontinuities).
  • Characterization of void cell models, finite element method (FEM) models, and microstructure-based models.
  • Discussion of cohesive zone models, atomistic simulations, and peridynamic modeling.
Keywords:
coalescencedebondinggrowthnumerical modellingparticle crackingporous ductile materialsecond phase particlevoid nucleation

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  • Description of numerical approaches for void growth and coalescence, considering stress state and strain localization.

    • Main Results:

    • Void nucleation modeling includes approaches based on second-phase particles and crystal structure discontinuities.
    • Various numerical models, from basic void cell to advanced atomistic and peridynamic methods, have been characterized.
    • FEM modeling significantly contributes to understanding microstructural phenomena in ductile fracture.

    Conclusions:

    • Numerical modeling provides crucial insights into the microstructural mechanisms of ductile fracture.
    • The finite element method is a key tool for analyzing void nucleation, growth, and coalescence.
    • Advanced simulation techniques are enhancing the predictive capabilities for material failure.