Mechanical properties of bioinspired bicontinuous nanocomposites

Sun, Xiao-Yu , Li, ChunYang, Gu, YuanTong, & Feng, Xi-Qiao (2013) Mechanical properties of bioinspired bicontinuous nanocomposites. Computational Materials Science, 80, pp. 71-78.

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Abstract

Inspired by the wonderful properties of some biological composites in nature, we performed molecular dynamics simulations to investigate the mechanical behavior of bicontinuous nanocomposites. Three representative types of bicontinuous composites, which have regular network, random network, and nacre inspired microstructures respectively, were studied and the results were compared with those of a honeycomb nanocomposite with only one continuous phase. It was found that the mechanical strength of nanocomposites in a given direction strongly depends on the connectivity of microstructure in that direction. Directional isotropy in mechanical strength and easy manufacturability favor the random network nanocomposites as a potentially great bioinspired composite with balanced performances. In addition, the tensile strength of random network nanocomposites is less sensitive to the interfacial failure, owing to its super high interface-to-volume ratio and random distribution of internal interfaces. The results provide a useful guideline for design and optimization of advanced nanocomposites with superior mechanical properties.

Impact and interest:

5 citations in Scopus
5 citations in Web of Science®
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ID Code: 62784
Item Type: Journal Article
Refereed: Yes
Keywords: Bicontinuous nanocomposites, Molecular dynamics simulation, Mechanical property, Microstructure
DOI: 10.1016/j.commatsci.2013.04.012
ISSN: 0927-0256
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Materials Engineering not elsewhere classified (091299)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Deposited On: 23 Sep 2013 03:29
Last Modified: 09 Apr 2014 12:20

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