[Multiscale modelling of mechanical properties of bone: study at the fibrillar scale]
The exceptional mechanical properties of bones are not only the result of the amount and type of the micro-constituents, but also of their morphological organization at the different lower scales. We present here a multiscale strategy to deal with such a hierarchical structure. This strategy leads to a numerical homogenization procedure which is in between classical deterministic and purely macroscopical approaches. Numerical simulations show the dependency of the axial elastic modulus of the fibril on the mineral volume fraction.
Les remarquables propriétés mécaniques des tissus osseux sont dues à leur organisation structurelle particulière. Différentes techniques d'analyse multi-échelle existent pour relier ces caractéristiques microscopiques au comportement macroscopique du tissu osseux. Dans ce travail, nous adoptons une technique d'homogénéisation s'appuyant sur des équivalences énergétiques. Cette technique permettant de modéliser des milieux multistructurels est intermédiaire entre les approches déterministes classiques et les traitements purement macroscopiques. Nous appliquons notre approche au cas des tissus osseux afin de corréler le module élastique axial avec la teneur volumique minérale à la petite échelle de la fibrille.
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Keywords: Biomechanics, Multiscale modelling, Elastic properties, Numerical calculation, Bone structure
Vittorio Sansalone 1; Thibault Lemaire 1; Salah Naili 1
@article{CRMECA_2007__335_8_436_0, author = {Vittorio Sansalone and Thibault Lemaire and Salah Naili}, title = {Mod\'elisation multi-\'echelle des propri\'et\'es m\'ecaniques de l'os : \'etude \`a l'\'echelle de la fibrille}, journal = {Comptes Rendus. M\'ecanique}, pages = {436--442}, publisher = {Elsevier}, volume = {335}, number = {8}, year = {2007}, doi = {10.1016/j.crme.2007.06.003}, language = {fr}, }
TY - JOUR AU - Vittorio Sansalone AU - Thibault Lemaire AU - Salah Naili TI - Modélisation multi-échelle des propriétés mécaniques de l'os : étude à l'échelle de la fibrille JO - Comptes Rendus. Mécanique PY - 2007 SP - 436 EP - 442 VL - 335 IS - 8 PB - Elsevier DO - 10.1016/j.crme.2007.06.003 LA - fr ID - CRMECA_2007__335_8_436_0 ER -
%0 Journal Article %A Vittorio Sansalone %A Thibault Lemaire %A Salah Naili %T Modélisation multi-échelle des propriétés mécaniques de l'os : étude à l'échelle de la fibrille %J Comptes Rendus. Mécanique %D 2007 %P 436-442 %V 335 %N 8 %I Elsevier %R 10.1016/j.crme.2007.06.003 %G fr %F CRMECA_2007__335_8_436_0
Vittorio Sansalone; Thibault Lemaire; Salah Naili. Modélisation multi-échelle des propriétés mécaniques de l'os : étude à l'échelle de la fibrille. Comptes Rendus. Mécanique, Volume 335 (2007) no. 8, pp. 436-442. doi : 10.1016/j.crme.2007.06.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2007.06.003/
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