# Computational micromechanics of ductile fracture in duplex periodic microstructures

https://mdr.nims.go.jp/datasets/6ab6b7b3-bea4-4b5d-aabd-e1d980967dcd

## File

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## Id

6ab6b7b3-bea4-4b5d-aabd-e1d980967dcd

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-09-02T02:28:49.264436Z

## Updated at

2026-09-02T02:31:53.519863Z

## Published at

2026-09-02T05:28:28.682135Z

## Doi



## First published url

https://doi.org/10.1016/j.mtcomm.2026.116014

## Date published

2026-08-28

## Recorded date published

2026-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Computational micromechanics of ductile fracture in duplex periodic microstructures
  title_type: original
  lang: en

## Description

- description: Controlling microstructural heterogeneity is a promising strategy for
    tailoring the mechanical properties of multi-constituent materials. In particular,
    constituent connectivity, including the continuity of stiff or high-strength constituents,
    has attracted considerable interest in computational micromechanics. Although
    recent advances have enabled detailed analyses of complex microstructures, the
    micromechanical mechanisms governing their nonlinear deformation and fracture
    behavior remain insufficiently understood. In this study, three-dimensional numerical
    material testing, combining finite element analysis with a plasticity-induced
    damage model, is employed to investigate the relationship between constituent
    morphology and ductile fracture in duplex periodic microstructures. The analyzed
    microstructures contain continuous or discrete high-strength constituents over
    a wide range of volume fractions. The results show that both constituent volume
    fraction and connectivity affect macroscopic yielding, whereas fracture behavior
    exhibits a particularly strong sensitivity to connectivity. Specifically, the
    continuity of the low-strength matrix substantially affects damage localization,
    tensile strength, and elongation. When the low-strength constituent forms a continuous
    matrix, plastic deformation and damage preferentially localize within that matrix.
    Consequently, macroscopic fracture can occur before the strengthening effect of
    a large volume fraction of the discrete high-strength constituent is fully realized.
    These results demonstrate that constituent volume fraction alone is insufficient
    to characterize the ductile fracture behaviorof the periodic microstructures investigated
    in this study. The findings provide micromechanical insight into the distinct
    roles of constituent volume fraction, morphology, and connectivity and may contribute
    to the morphology-based design of heterogeneous materials with improved mechanical
    performance.
  description_type: abstract
  lang: und

## Creator

- name: Ikumu Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-7693-1675
- name: Tianwen Tan
  role: author
  orcid: https://orcid.org/0000-0003-1898-9331

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Ductile fracture
  schema: not_defined
- subject: Constituent connectivity
  schema: not_defined
- subject: Computational micromechanics
  schema: not_defined
- subject: Duplex microstructures
  schema: not_defined
- subject: Plasticity-induced damage
  schema: not_defined
- subject: Finite element analysis
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc/4.0/

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## Embargo



## Journal

- title: Materials Today Communications
  issn: '23524928'
  volume: '56'
  article_number: '116014'

## Conference



## Related item



## Funding

- funder_name: The Iron and Steel Institute of Japan
- identifier: JPMJCR1995
  funder_name: Japan Science and Technology Agency Strategic Basic Research Programs
    CREST

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## Fileset

- id: 6356b0bd-53d5-4549-aeb3-2234fd228490
  filename: 2026matertodaycomm_watanabe.pdf
  content_type: application/pdf
  size: 8570288
  md5: 2483c1d4e33156b1a7df87a097574704

## Thumbnail

fileset_id: 6356b0bd-53d5-4549-aeb3-2234fd228490
filename: 2026matertodaycomm_watanabe.pdf