Estimation of material properties of cancellous bone using multiscale FEM |
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| Authors: | S Ilic K Hackl R Gilbert |
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| Institution: | 1. Institute of Mechanics, University of Bochum, D-44780 Bochum, Germany;2. Department of Mathematical Sciences, University of Delaware, Newark, DE, USA |
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| Abstract: | Cancellous bone is a spongy type of bone with voids filled by blood marrow. Without much loss of generality it can be modeled as a material with periodic microstructure where overall parameters can be calculated using homogenization methods. Here the multiscale finite element method is applied and the assumed representative volume element (RVE) is a cube with solid frame and fluid core. From the point of view of the finite element method the RVE is a combination of solid and shell elements. As the acoustic excitation is considered, a complex stiffness matrix and complex displacements appear in the solution of the problem. Calculation of overall properties is repeated for different geometries of the solid frame. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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