Modeling of dynamic fracture and damage in two-dimensional trabecular bone microstructures using the cohesive finite element method

Journal of Biomechanical Engineering
Vikas Tomar

Abstract

Trabecular bone fracture is closely related to the trabecular architecture, microdamage accumulation, and bone tissue properties. Micro-finite-element models have been used to investigate the elastic and yield properties of trabecular bone but have only seen limited application in modeling the microstructure dependent fracture of trabecular bone. In this research, dynamic fracture in two-dimensional (2D) micrographs of ovine (sheep) trabecular bone is modeled using the cohesive finite element method. For this purpose, the bone tissue is modeled as an orthotropic material with the cohesive parameters calculated from the experimental fracture properties of the human cortical bone. Crack propagation analyses are carried out in two different 2D orthogonal sections cut from a three-dimensional 8 mm diameter cylindrical trabecular bone sample. The two sections differ in microstructural features such as area fraction (ratio of the 2D space occupied by bone tissue to the total 2D space), mean trabecula thickness, and connectivity. Analyses focus on understanding the effect of the rate of loading as well as on how the rate variation interacts with the microstructural features to cause anisotropy in microdamage accumulation and in the fr...Continue Reading

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Citations

Apr 25, 2012·Biomechanics and Modeling in Mechanobiology·Noel M HarrisonPeter E McHugh
Mar 14, 2014·Biomechanics and Modeling in Mechanobiology·Finn DonaldsonRalph Müller
Jul 31, 2013·Journal of the Mechanical Behavior of Biomedical Materials·Hambli Ridha, Philipp J Thurner
Jul 26, 2011·Journal of the Mechanical Behavior of Biomedical Materials·Ani UralDeepak Vashishth
Feb 7, 2013·International Journal for Numerical Methods in Biomedical Engineering·Roberto CarrettaRalph Müller
Aug 27, 2013·Journal of the Mechanical Behavior of Biomedical Materials·Tirthankar BhattacharjeeKumar Vemaganti
Sep 29, 2012·Journal of the Mechanical Behavior of Biomedical Materials·Kyungmok KimDigby D Macdonald
Aug 3, 2020·Current Osteoporosis Reports·Ani Ural
Oct 6, 2011·Computer Methods in Biomechanics and Biomedical Engineering·Susan Mischinski, Ani Ural
Apr 30, 2020·Journal of Biomechanical Engineering·Mohammad SalemKajsa Duke
Nov 27, 2018·Journal of Biomechanics·Max A HammondThomas Siegmund
Apr 26, 2021·International Journal for Numerical Methods in Biomedical Engineering·Xuan Nam DoJean-François Ganghoffer
Jun 2, 2021·ACS Biomaterials Science & Engineering·Di LiuTeng Zhang

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