F-0904 連続的な骨密度分布を考慮した生体骨の有限要素解析について(J21-1 骨格構造のバイオメカニクス)(J21 生体構造と組織のバイオメカニクス)

概要

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Bone density distribution is not uniform and varies from cortical bone to cancellous bone gradually. Mechanical property of bone is also inhomogeneous especially between cortical and cancellous bone. In conventional finite-element used in general FE code, a material property is given for an element one by one. So that, fine meshing is necessary for closely modeling the gradual and inhomogeneous material property of bone. Even if fine meshing was used, gap of material property among elements was unavoidable. To analyze the bone considering continuous bone density distribution, special finite-element, in which material property was continuously given by quadratic function, was proposed. The special element was applied to a composite beam model and a simplified vertebra model. Results of the analysis were compared with one of general FE code, and its availability was discussed.
一般社団法人日本機械学会の論文
2001-08-22