随机分支弹性管组件的输入阻抗。
The input impedance of an assembly of randomly branching elastic tubes.
作者信息
Taylor M G
出版信息
Biophys J. 1966 Jan;6(1):29-51. doi: 10.1016/S0006-3495(66)86638-9.
Abstract
Computations are presented of the input impedance of assemblies of randomly bifurcating elastic tubes, as a generalized model of the arterial system. Account is taken of the viscosity of the fluid, the viscoelastic properties of the walls, the variation of elasticity in the different orders of branches, and the variation in cross-sectional area at the bifurcations. The results show that the distributed and scattered nature of the terminations of such an assembly greatly reduces the influence of reflections upon the behavior of the input impedance. The variation of impedance with frequency is very similar in form to that found in animal experiments for the input impedance of the aorta. The architecture of the arterial system may thus be considered to play an important part in determining the favorably low impedance presented to the heart by the aorta.
摘要
本文给出了作为动脉系统广义模型的随机分支弹性管组件输入阻抗的计算结果。考虑了流体的粘性、管壁的粘弹性特性、不同分支阶次弹性的变化以及分支处横截面积的变化。结果表明，这种组件终端的分布和散射特性大大降低了反射对输入阻抗行为的影响。阻抗随频率的变化形式与在动物实验中测得的主动脉输入阻抗非常相似。因此，可以认为动脉系统的结构在决定主动脉呈现给心脏的有利低阻抗方面起着重要作用。
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本文引用的文献
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