Spongy bone deformation mechanisms
Experimental and numerical studies
DOI:
https://doi.org/10.13052/EJCM.18.67-79Keywords:
spongy bone, compression tests, finite element simulationAbstract
In order to identify the spongy bone's mechanical behaviour, we performed compression tests on cylindrical samples. Experimental results show important dispersions and an unexpected inverse strain rate dependency at low range of loading velocities. The origin of the dispersions can be attributed to the combination of the architecture effect and the mechanical properties variation of the constitutive material. In order to understand the inverse strain rate sensitivity, we used a controlled constitutive material to build new equivalent samples with the spongy bone's architecture. These samples were subjected to compression tests. Numerical simulations of compression tests on the same architecture have been carried out with FE models built from μCt data. The obtained results are compared in term of final sample shape and the evolution of the compression force.
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References
Baivier S., Chaari F., Drazetic P. and Markiewicz E., “A micro finite element reconstruction
of identifying spongy bone mechanical behaviour”, SB Conference, Brussels, 2005.
Bayraktar H. H. and Keaveny T. M., “Mechanisms of uniformity of yield strains for
trabecular bone”, Journal of Biomechanics, 37, 2004, p. 1671-1678.
Canaple B., Rungen P., Drazetic P., Markiewicz E. and Cesari D., “Towards a finite element
head model used a head injury predictive tool”, Int, Journal of Crashworthiness, 8, 2003,
p. 19-30.
Carter D.R. and Hayes W.C., “The compressive behaviour of bone as a two-phase porous
structure”, Journal of bone and joint surgery, vol. 59, 1977, p. 954-962.
Chaari F., Markiewicz É., Drazetic P. “Identification of the spongy bone mechanical
behaviour under compression loads: numerical simulation versus experimental results”,
International Journal of Crashworthiness vol. 12, n° 3, 2007 p. 247-253.
Delille C., Baivier S., Masson C. and Drazetic P., “Identification of skull behaviour laws
starting from bending tests”, Mécanique et Industries, vol. 4, 2003, p. 119-123.
Follet H., Caractérisation Biomécanique et Modélisation 3D par Imagerie X et IRM haute
résolution de l’os spongieux humain : Evaluation du risque fracturaire, PHD Thesis,
Institut National des Sciences Appliquées de Lyon, 2002.
Fyhrie D. P. and Schaffler M. B., “Failure mechanisms in human vertebral cancellous bone”,
Bone, vol. 15, 1994, p. 105-109.
Jacobs C.R., Davis B.R., Rieger C.J., Francis J.J., Saad M. and Fyhrie D.P., “The impact of
boundary conditions and mesh size on the accuracy of cancellous bone tissue modulus
determination using large-scale finite-element modelling”, Journal of Biomechanics, 32,
, p. 1159-1164.
Kopperdahl D. L. and Keaveny T. M., “Yield strain behaviour of trabecular bone”, Journal of
Biomechanics, vol. 31, 1998, p. 601-608.
Ruan J, Awfik T., Khalil T.B., and King A.I., “Dynamic Response of the Human Head Impact
by Three-Dimensional Finite Element Analysis”, ASME, vol. 16, 1994.
Turner C. H. and Burr D. B., “Basic biomechanical measurements of bone: a tutorial”, Bone
vol. 14, 1993, p. 595-606.
Van Rietbergen B., Weinans H., Huiskes R. and Odgaard A., “A new method to determine
trabecular bone elastic properties and loading using micromechanical finite-element
models”, Journal of Biomechanics, vol. 28, n° 1, 1995, p. 69-81.
Yu H.Y., Cai Z.B., Zhou Z.R. and Zhu M.H., “Fretting behaviour of cortical bone against
titanium and its alloy”, Wear, vol. 259, n° 7-12, 2005, p. 910-918.
Zhou C., Khalil T.B. and King A.I., “A new model Comparing Impact Responses of the
Homogeneous and Inhomogeneous Human Brain”, SAE, n°952714, 1995, p. 121-137.
