3相理論に基づく非線形有限要素法による生体軟組織の力学・電気化学挙動に関する検討(<特集>イメージベースト連成バイオメカニクス)

概要

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By regarding hydrated charged soft tissues as a fluid phase composed of water, movable electrolytes, and a solid phase mainly composed of collagen fibrils and negatively charged proteoglycans, triphasic theory has been proposed to understand the coupling mechanisms between mechanical, chemical and electrical phenomena in hydrated charged soft tissues. In this research, a finite element formulation based on triphasic theory for large deformation analyses was developed by introducing a reference configuration defined at undeformed solid phase. The weak form was obtained by introducing weighted residual method. Numerical results of confined compression problem were presented to demonstrate the mechanical and electrochemical behavior of triphasic structures. The effects of mechanical load on the stiffness of tissue, fixed charge density, ion concentration and electric potential were also exemplified.
一般社団法人日本機械学会の論文
2004-09-25