Journal article
A waviness-centered damage model for collagenous soft tissues
Acta biomaterialia, Vol.195, pp.134-143
03/2025
DOI: 10.1016/j.actbio.2025.01.031
PMID: 39983857
Abstract
This article presents a damage model for collagenous tissue under monotonic loading. Given that the true stretch of collagen fibers is not uniform and is regulated by fiber waviness, we postulate that damage commences from more stretched (i.e. straighter) fibers and progresses to less stretched (i.e. wavier) ones. The complicated nonlinear response is regarded as the outcome of two competing mechanisms: the recruitment of wavy intact fibers and the loss of taut functioning fibers. The progression of damage is modeled by an evolving damage front in the waviness domain. A power law is proposed for the evolution of damage front. The model was fitted to four groups of published uniaxial and biaxial tests data of vascular tissues. Spot-on fits were observed in all groups.
Details
- Title: Subtitle
- A waviness-centered damage model for collagenous soft tissues
- Creators
- Jia Lu - University of IowaXuehuan He - University of IowaFerdinando Auricchio - University of Pavia
- Resource Type
- Journal article
- Publication Details
- Acta biomaterialia, Vol.195, pp.134-143
- Publisher
- ELSEVIER SCI LTD
- DOI
- 10.1016/j.actbio.2025.01.031
- PMID
- 39983857
- ISSN
- 1878-7568
- eISSN
- 1878-7568
- Grant note
- U.S. Department of Education: P116S210005
We would like to thank an anonymous reviewer who pointed out a misplaced factor p in the continuum strain energy function. We also express our gratitudes to Professor Stephane Avril for providing the bulge inflation data, and to Dr. Chantal Allamargot and Mr. Vivek Karmarker for obtaining the confocal images. JL acknowledges the support form the U.S. Department of Education through grant #P116S210005.
- Language
- English
- Electronic publication date
- 02/19/2025
- Date published
- 03/2025
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984792362302771
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