Effect of material and structural factors on fracture behaviour of mineralised collagen microfibril using finite element simulation

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Abdelwahed Barkaoui (Author) Other; Ridha Hambli (Author) Other; João Manuel R. S. Tavares (Author) FEUP

Journal

Title: Computer Methods in Biomechanics and Biomedical Engineering

Vol. 18 No. 11

Pages: 1181-1190

ISSN: 1025-5842

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 8 Citations

ISI Web of Science

Scopus - 14 Citations

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Other information

Authenticus ID: P-00A-0V2

DOI: 10.1080/10255842.2014.883601

Abstract (EN): Bone is a multiscale heterogeneous material and its principal function is to support the body structure and to resist mechanical loads without fracturing. Numerical modelling of biocomposites at different length scales provides an improved understanding of the mechanical behaviour of structures such as bone, and also guides the development of multiscale mechanical models. Here, a three-dimensional nano-scale model of mineralised collagen microfibril based on the finite element method was employed to investigate the effect of material and structural factors on the mechanical equivalent of fracture properties. Fracture stress and damping capacity as functions of the number of cross-links were obtained under tensile loading conditions for different densities and Young's modulus of the mineral phase. The results show that the number of cross-links and the density of mineral as well as Young's modulus of mineral have an important influence on the strength of mineralised collagen microfibrils which in turn clarify the bone fracture on a macroscale.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10