平滑筋活性状態での血管壁の変形挙動に対する構成式

概要

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A constitutive model for blood vessels is formulated with special emphasis on smooth muscle activation. The activation of smooth muscle gives rise to the contraction of blood vessels and changes in their mechanical properties. Thus, we first characterize the state of activation by employing the stretch ratio between the stress-free configurations in the active and the passive conditions and by representing the material constants of the pseudo-strain energy function in terms of the measure of activation. The pseudo-strain energy function was expressed in the form of the polynomial of the second strain invariant. The proposed constitutive model was employed to simulate some previous data of canine arteries in different sites or in different degrees of activation. It was observed that the present model can describe the mechanical behavior of blood vessels with various types of deformation properties in activated states and of those in a wide range of activated conditions.
一般社団法人日本機械学会の論文
1989-05-25