Modeling of a biological material nacre

Waviness stiffness model

N. S. Al-Maskari, D. A. McAdams, J. N. Reddy

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Nacre is a tough yet stiff natural composite composed of microscopic mineral polygonal tablets bonded by a tough biopolymer. The high stiffness of nacre is known to be due to its high mineral content. However, the remarkable toughness of nacre is explained by its ability to deform past a yield point and develop large inelastic strain over a large volume around defects and cracks. The high strain is mainly due to sliding and waviness of the tablets. Mimicking nacre's remarkable properties, to date, is still a challenge due in part to fabrication challenges as well as a lack of models that can predict its properties or properties of a bulk material given specific constituent materials and material structure. Previous attempts to create analytical models for nacre include tablet sliding but don't account for the waviness of the tablets. In this work, a mathematical model is proposed to account for the waviness of the tablet. Using this model, a better prediction of the elastic modulus is obtained that agrees with experimental values found in the literature. In addition, the waviness angle can be predicted which is within the recommended range. Having a good representative model aids in designing a bio-mimicked nacre.

Original languageEnglish
Pages (from-to)772-776
Number of pages5
JournalMaterials Science and Engineering C
Volume70
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Nacre
tablets
Biological materials
stiffness
Tablets
Stiffness
Minerals
Biopolymers
sliding
Toughness
minerals
Analytical models
Elastic moduli
Mathematical models
biopolymers
Cracks
Fabrication
yield point
toughness
Defects

Keywords

  • Bioinspired
  • Biomimetic
  • Nacre
  • Staggered biological composite
  • Waviness model

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Modeling of a biological material nacre : Waviness stiffness model. / Al-Maskari, N. S.; McAdams, D. A.; Reddy, J. N.

In: Materials Science and Engineering C, Vol. 70, 01.01.2017, p. 772-776.

Research output: Contribution to journalArticle

@article{bb0a15e7c38147bd8d45ae5664ae5105,
title = "Modeling of a biological material nacre: Waviness stiffness model",
abstract = "Nacre is a tough yet stiff natural composite composed of microscopic mineral polygonal tablets bonded by a tough biopolymer. The high stiffness of nacre is known to be due to its high mineral content. However, the remarkable toughness of nacre is explained by its ability to deform past a yield point and develop large inelastic strain over a large volume around defects and cracks. The high strain is mainly due to sliding and waviness of the tablets. Mimicking nacre's remarkable properties, to date, is still a challenge due in part to fabrication challenges as well as a lack of models that can predict its properties or properties of a bulk material given specific constituent materials and material structure. Previous attempts to create analytical models for nacre include tablet sliding but don't account for the waviness of the tablets. In this work, a mathematical model is proposed to account for the waviness of the tablet. Using this model, a better prediction of the elastic modulus is obtained that agrees with experimental values found in the literature. In addition, the waviness angle can be predicted which is within the recommended range. Having a good representative model aids in designing a bio-mimicked nacre.",
keywords = "Bioinspired, Biomimetic, Nacre, Staggered biological composite, Waviness model",
author = "Al-Maskari, {N. S.} and McAdams, {D. A.} and Reddy, {J. N.}",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.msec.2016.09.061",
language = "English",
volume = "70",
pages = "772--776",
journal = "Materials Science and Engineering C",
issn = "0928-4931",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Modeling of a biological material nacre

T2 - Waviness stiffness model

AU - Al-Maskari, N. S.

AU - McAdams, D. A.

AU - Reddy, J. N.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Nacre is a tough yet stiff natural composite composed of microscopic mineral polygonal tablets bonded by a tough biopolymer. The high stiffness of nacre is known to be due to its high mineral content. However, the remarkable toughness of nacre is explained by its ability to deform past a yield point and develop large inelastic strain over a large volume around defects and cracks. The high strain is mainly due to sliding and waviness of the tablets. Mimicking nacre's remarkable properties, to date, is still a challenge due in part to fabrication challenges as well as a lack of models that can predict its properties or properties of a bulk material given specific constituent materials and material structure. Previous attempts to create analytical models for nacre include tablet sliding but don't account for the waviness of the tablets. In this work, a mathematical model is proposed to account for the waviness of the tablet. Using this model, a better prediction of the elastic modulus is obtained that agrees with experimental values found in the literature. In addition, the waviness angle can be predicted which is within the recommended range. Having a good representative model aids in designing a bio-mimicked nacre.

AB - Nacre is a tough yet stiff natural composite composed of microscopic mineral polygonal tablets bonded by a tough biopolymer. The high stiffness of nacre is known to be due to its high mineral content. However, the remarkable toughness of nacre is explained by its ability to deform past a yield point and develop large inelastic strain over a large volume around defects and cracks. The high strain is mainly due to sliding and waviness of the tablets. Mimicking nacre's remarkable properties, to date, is still a challenge due in part to fabrication challenges as well as a lack of models that can predict its properties or properties of a bulk material given specific constituent materials and material structure. Previous attempts to create analytical models for nacre include tablet sliding but don't account for the waviness of the tablets. In this work, a mathematical model is proposed to account for the waviness of the tablet. Using this model, a better prediction of the elastic modulus is obtained that agrees with experimental values found in the literature. In addition, the waviness angle can be predicted which is within the recommended range. Having a good representative model aids in designing a bio-mimicked nacre.

KW - Bioinspired

KW - Biomimetic

KW - Nacre

KW - Staggered biological composite

KW - Waviness model

UR - http://www.scopus.com/inward/record.url?scp=84988914920&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988914920&partnerID=8YFLogxK

U2 - 10.1016/j.msec.2016.09.061

DO - 10.1016/j.msec.2016.09.061

M3 - Article

VL - 70

SP - 772

EP - 776

JO - Materials Science and Engineering C

JF - Materials Science and Engineering C

SN - 0928-4931

ER -