血管の不均一部が脈波に及ぼす影響(流体工学,流体機械)  [in Japanese] Effect of an Inhomogeneous Part in Blood Vessel on Pulse Wave(Fluids Engineering)  [in Japanese]

The effect of an inhomogeneous part in a blood vessel on pulse wave has been investigated by using a one-dimensional lattice model associated with the material nonlinearity of the arterial vessel wall. In the present study, from the viewpoint of mechanics, a certain part of blood vessel, which has the different configuration and mechanical properties of the arterial vessel wall, is regarded as the inhomogeneous part by a generalization. The stability of the solitary wave is applied in order to obtain the reliable results by the numerical analysis of the pulse wave which propagates through the inhomogeneous part in the blood vessel. As a result, the behaviors of the pulse wave which propagates through the inhomogeneous part are shown. The factor which has the effects on the propagation of the pulse wave is revealed. Moreover, the relations between the behaviors of the pulse wave and the properties of the inhomogeneous part are clarified.