Evaluation of the mechanical behaviour and estimation of the elastic properties of porcine zonular fibres Zoltán I. Bocskai, Gábor L. Sándor, Zoltán.

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Presentation transcript:

Evaluation of the mechanical behaviour and estimation of the elastic properties of porcine zonular fibres Zoltán I. Bocskai, Gábor L. Sándor, Zoltán Kiss, Imre Bojtár, Zoltán Z. Nagy Journal of Biomechanics Volume 47, Issue 13, Pages 3264-3271 (October 2014) DOI: 10.1016/j.jbiomech.2014.08.013 Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 1 Sketch of the measurement, and the section of the separating ring, the supporting ring and the dissecting ring. Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 2 Images of an experimental sample; upper view A, B, H, I, L; view from below D, E, F, J, K; side view C, G; specimen after a typical failure mode M; section view N; 1 – dissecting ring; 2 – supporting ring; 3 – separating ring. Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 3 The difference between the measured (F׳–d׳) and calculated (F–d) force–displacement diagrams (A); the notations on an infinitesimal element, “ss” means single supported edge, t is the thickness, l is the length of the fibres, Dr is the distance between the inner (Ri) and outer (Ro) radius, Nr is the normal force in the bundles (B); the mesh grid (C) and the total deformation of the computational finite element model (D). Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 4 The analytical solution compared with the FE calculations; E is the Young׳s modulus, ν is the Poisson׳s ratio. Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 5 The measured force–displacement diagrams of the laboratory tests (A); the initial interval of the measured force–displacement diagrams (B). Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 6 The 4th order polynomial regressions (A) and the mean value with the standard deviations at characteristic displacements (B). Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 7 The analytical solutions compared with the mean±SD values of the laboratory tests; E is the Young׳s modulus. Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 8 The results of the FE analysis compared with the mean±SD values of the laboratory tests; E is the Young׳s modulus, ν is the Poisson׳s ratio. Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions

Fig. 9 The effects of the initial stresses and Poisson׳s ratios compared with the mean±SD values of the laboratory tests; E is the Young׳s modulus, ν is the Poisson׳s ratio, IS1=4.4kPa and IS2=8.4kPa are the two different initial stress values. Journal of Biomechanics 2014 47, 3264-3271DOI: (10.1016/j.jbiomech.2014.08.013) Copyright © 2014 Elsevier Ltd Terms and Conditions