# Effect of Relative Density on Dynamic Mechanical Behavior and Deformation Mechanisms of Porous Titanium under Coupled High-Temperature and High-Strain-Rate Conditions

https://mdr.nims.go.jp/datasets/4b7fd751-b174-43fc-a41f-455a232d1307

## File

- [Effect of relative density on dynamic mechanical behavior and deformation mechanisms of porous titanium under coupled high-temperature and high-strain.pdf](https://mdr.nims.go.jp/filesets/333ad293-af0a-4472-ae69-81ef47cb43ae/download) ([Detail](https://mdr.nims.go.jp/filesets/333ad293-af0a-4472-ae69-81ef47cb43ae.md))
- [STAM-2025-0383_data.zip](https://mdr.nims.go.jp/filesets/ea06bbe9-97e6-4676-afdf-e2fe95e65e5d/download) ([Detail](https://mdr.nims.go.jp/filesets/ea06bbe9-97e6-4676-afdf-e2fe95e65e5d.md))

## Id

4b7fd751-b174-43fc-a41f-455a232d1307

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-05T02:10:09.901337Z

## Updated at

2025-11-06T03:30:09.589071Z

## Published at

2025-11-06T03:24:49.953008Z

## Doi

https://doi.org/10.48505/nims.5853

## First published url

https://doi.org/10.1080/14686996.2025.2580925

## Date published

2025-12-31

## Recorded date published

2025-12-31

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Effect of Relative Density on Dynamic Mechanical Behavior and Deformation
    Mechanisms of Porous Titanium under Coupled High-Temperature and High-Strain-Rate
    Conditions
  title_type: original
  lang: en

## Description

- description: 'The influence of relative density on the dynamic mechanical behavior
    of porous titanium under combined high-temperature and high-strain-rate conditions
    is investigated. Using validated finite element models based on three-dimensional
    Voronoi tessellations, simulations of Split Hopkinson Pressure Bar (SHPB) tests
    were conducted across a range of relative densities (0.3-0.6), strain rates (3000-8000
    s− 1), and temperatures (25-550 °C). Results demonstrate that increasing relative
    density from 0.3 to 0.6 increases the yield stress by 511.8%, attributed to enhanced
    cell-wall interactions and a concomitant shift in deformation mechanisms. Strain
    rate strengthening and thermal softening compete, with high relative density amplifying
    both effects. The stress-strain curves exhibit three characteristic regimes: linear
    elasticity, plateau, and densification, where higher relative density shortens
    the plateau stage and advances densification onset. Low-density specimens (ρr < 0.5)
    undergo layer-by-layer collapse dominated by cell-wall bending, while high-density
    specimens (ρr > 0.5) exhibit matrix-dominated triaxial compression with reduced
    localized deformation. Quantitative analysis of regionally partitioned displacement
    confirms that strain rate intensifies the magnitude of localized deformation,
    whereas temperature primarily induces global softening. These insights provide
    a predictive framework for designing porous titanium architectures with tailored
    dynamic performance in extreme environments.'
  description_type: abstract
  lang: en

## Creator

- name: Dong Yang
  role: author
  organization: Anhui University
  department: Department of Mechanical Engineering
- name: Mingyu Li
  role: author

## Contact agent



## Publisher

organization: Taylor & Francis

## Managing organization



## Keyword

- subject: Porous titanium
  schema: not_defined
- subject: Relative density
  schema: not_defined
- subject: Dynamic response
  schema: not_defined
- subject: High-temperature
  schema: not_defined
- subject: High-strain-rate
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '26'
  article_number: '2580925'

## Conference



## Related item



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## Instrument



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## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Fileset

- id: 333ad293-af0a-4472-ae69-81ef47cb43ae
  filename: Effect of relative density on dynamic mechanical behavior and deformation
    mechanisms of porous titanium under coupled high-temperature and high-strain.pdf
  content_type: application/pdf
  size: 7682869
  md5: db7abefb101f68603996964a29507770
- id: ea06bbe9-97e6-4676-afdf-e2fe95e65e5d
  filename: STAM-2025-0383_data.zip
  content_type: application/zip
  size: 277304
  md5: 0142f9da41a3e787aa94eec51ea261de

## Thumbnail

fileset_id: 333ad293-af0a-4472-ae69-81ef47cb43ae
filename: Effect of relative density on dynamic mechanical behavior and deformation
  mechanisms of porous titanium under coupled high-temperature and high-strain.pdf