# Robust sequential algorithm for plasticity–micromorphic damage coupling in polycrystalline ductile fracture analysis

https://mdr.nims.go.jp/datasets/b5cbd17b-439b-4154-abfa-686c2f93543e

## File

- [2026CMAME_Tan.pdf](https://mdr.nims.go.jp/filesets/40f2cb73-51b1-4fa4-8a9f-3b178a5ddd59/download) ([Detail](https://mdr.nims.go.jp/filesets/40f2cb73-51b1-4fa4-8a9f-3b178a5ddd59.md))

## Id

b5cbd17b-439b-4154-abfa-686c2f93543e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-31T00:15:41.659861Z

## Updated at

2025-11-10T03:30:22.725684Z

## Published at

2025-11-10T03:24:32.719842Z

## Doi



## First published url

https://doi.org/10.1016/j.cma.2025.118500

## Date published

2025-10-24

## Recorded date published

2026-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Robust sequential algorithm for plasticity–micromorphic damage coupling in
    polycrystalline ductile fracture analysis
  title_type: original
  lang: en

## Description

- description: Numerical simulations of ductile fracture analysis frequently encounter
    significant convergence challenges. While existing efforts have largely focused
    on global/local numerical optimization or extended (discontinuous) methods, this
    study introduces a novel stress-update algorithm operating at the material point
    level. This algorithm is designed to mitigate the computational difficulties inherent
    in ductile fracture problems, especially in single crystal plasticity simulations
    that employ rate--independent constitutive formulations. For implicit models based
    on continuum damage mechanics, material softening mechanisms like damage complicate
    the solution of global equations. This study demonstrates that the plasticity
    mechanism can be locally separated from the damage mechanism while maintaining
    mathematical equivalence with a conventional algorithm. This sequential scheme
    provides a robust and convenient approach for describing the coupling between
    multiple plasticity and damage internal state variables. Furthermore, a micromorphic
    damage enhancement, serving as a gradient extension, is utilized to mitigate spurious
    mesh-dependence and to account for the characteristic length scale in polycrystalline
    systems. The advantages and limitations of the proposed algorithm, from its constitutive
    formulations to its comparative applications, are thoroughly discussed.
  description_type: abstract
  lang: und

## Creator

- name: Tianwen Tan
  role: author
  orcid: https://orcid.org/0000-0003-1898-9331
  organization: National Institute for Materials Science
- name: Ikumu Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-7693-1675
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Ductile fracture
  schema: not_defined
- subject: Rate–independent single crystal plasticity
  schema: not_defined
- subject: Robustness
  schema: not_defined
- subject: Micromorphic damage mechanism
  schema: not_defined
- subject: Finite strain
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Computer Methods in Applied Mechanics and Engineering
  issn: '00457825'
  volume: '448'
  article_number: '118500'

## Conference



## Related item



## Funding

- funder_name: Japan Science and Technology Agency
- identifier: JPMJCR1995
  funder_name: Core Research for Evolutional Science and Technology

## Instrument



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## Fileset

- id: 40f2cb73-51b1-4fa4-8a9f-3b178a5ddd59
  filename: 2026CMAME_Tan.pdf
  content_type: application/pdf
  size: 14002538
  md5: bba18befb8b03224bb29583afcd0c924

## Thumbnail

fileset_id: 40f2cb73-51b1-4fa4-8a9f-3b178a5ddd59
filename: 2026CMAME_Tan.pdf