血管壁に対する非弾性構成の定式化

概要

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The present paper is concerned with the formulation of a constitutive model which can describe the hysteresis loop of a stress-strain relationship of blood vessels under cyclic loading conditions. It is assumed that this hysteresis loop is described by the superposition of elastic deformation and viscoplastic deformation. For this reason the total strain is expressd as the sum of the elastic part and the inelastic part on the basis of the finite deformation theory. Then the elastic part is established by postulating a pseudo strain energy density function of the exponential type, while the inelastic part is formulated by modifying the non-linear kinematic hardening rule in the viscoplastic model proposed by Chaboche et al. A comparison of the numerical result with the literature shows that the present model can describe the hysteresis loop qualitatively.
一般社団法人日本機械学会の論文
1988-09-25