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Cost-Effective and Sufficiently Precise Integration Method Adapted to the FEM Calculations of Bone Tissue

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The technique of Young’s modulus variation in the finite element is not spread in biomechanics. Our future goal is to adapt this technique to bone tissue strength calculations. The aim of this paper is to present the necessary studies of the element’s integration method that takes into account changes in material properties. For research purposes, a virtual sample with the size and distribution of mechanical properties similar to these in a human femoral wall, was used. WinPython, an environment of Python programming language was used to perform simulations. Results with the proposed element were compared with ANSYS element PLANE42 (with constant Young modulus). The modeled sample was calculated with five different integration methods at five different mesh densities. Considered integration methods showed a very high correlation of results. Two-point Gauss Quadrature Rule proved to be the most advantageous. Results obtained by this method deviate only slightly from the pattern, while the computing time was significantly lower than others. Performed studies have shown that accuracy of the solution depends largely on the mesh density of the sample. Application of the simplest integration method in combination with four times coarser mesh density than in ANSYS with a standard component still allowed to obtain better results.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Opublikowano w:
Computational Methods in Science and Technology nr 20(3), strony 101 - 108,
ISSN: 1505-0602
Język:
angielski
Rok wydania:
2014
Opis bibliograficzny:
Mazur K., Dąbrowski L.: Cost-Effective and Sufficiently Precise Integration Method Adapted to the FEM Calculations of Bone Tissue// Computational Methods in Science and Technology. -Vol. 20(3)., (2014), s.101-108
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.12921/cmst.2014.20.03.101-108
Weryfikacja:
Politechnika Gdańska

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