The use of XFEM to assess the influence of intra-cortical porosity on crack propagation

Rodriguez-Florez, Naiara<sup>1</sup>; Carriero, Alessandra<sup>2</sup>; Shefelbine, Sandra J.<sup>3</sup>

Affiliations

¹Department of Bioengineering, Imperial College London, London, UK

²Department of Biomedical Engineering, Florida Institute of Technology, Melbourne, FL, USA

³Department of Mechanical and Industrial Engineering and Department of Bioengineering, Northeastern University, Boston, MA, USA

Abstract and keywords

This study aimed at using eXtended finite element method (XFEM) to characterize crack growth through bone’s intra-cortical pores. Two techniques were compared using Abaqus: (1) void material properties were assigned to pores; (2) multiple enrichment regions with independent crack-growth possibilities were employed. Both were applied to 2D models of transverse images of mouse bone with differing porous structures. Results revealed that assigning multiple enrichment regions allows for multiple cracks to be initiated progressively, which cannot be captured when the voids are filled. Therefore, filling pores with one enrichment region in the model will not create realistic fracture patterns in Abaqus-XFEM.

Keywords: XFEM; intra-cortical porosity; microstructure; crack propagation; osteogenesis imperfecta

Links

DOI: 10.1080/10255842.2016.1235158

PubMed: 27658495

WoS: 000395117200005

History

Received: 2016-02-29

Accepted: 2016-09-07

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Year	Entry
2019	Gustafsson A, Wallin M, Khayyeri H, Isaksson H. Crack propagation in cortical bone is affected by the characteristics of the cement line: a parameter study using an XFEM interface damage model. Biomech Model Mechanobiol. August 2019;18(4):1247-1261.
2022	Buccino F, Bagherifard S, D'Amico L, Zagra L, Banfi G, Tromba G, Vergani LM. Assessing the intimate mechanobiological link between human bone micro-scale trabecular architecture and micro-damages. Eng Fract Mech. July 2022;270:108582.
2019	Gustafsson A, Khayyeri H, Wallin M, Isaksson H. An interface damage model that captures crack propagation at the microscale in cortical bone using XFEM. J Mech Behav Biomed Mater. February 2019;90:556-565.
2022	Rahovich P. Effects of Bone Structural Unit (BSU) Geometry and Material Properties on Crack Growth Through Idealized Trabecular Microstructures [Master's thesis]. Sudbury, ON: Laurentian University; 2022.
28	Wang M. Effect of Osteonal Microstructure on Crack Propagation: A Computational Study [PhD thesis]. Loughborough University; October 28.
2019	Gustafsson A. The Role of Microstructure for Crack Propagation in Cortical Bone [PhD thesis]. Lund, Sweden: Lund University; December 2019.
2019	Nobakhti S. Multiscale Characteristics of Bone Toughness [PhD thesis]. Northeastern University; July 2019.
2023	Sang W. Evaluating the Role of Lacunar-Canalicular Network on Bone Mechanical Properties Using Computational Modeling [PhD thesis]. Villanova University; May 2023.