Gressner A M, Clashsen H, Arnold G, Fessel H
Res Exp Med (Berl). 1977 Sep 30;171(2):191-9. doi: 10.1007/BF01851366.
The strain properties of geometrically defined specimens of human, pig, and bovine liver capsule were analysed in vitro by applying histomechanical procedures. The dynamic relaxation correlates with the static relaxation under sinus shaped strain process after previous additional predetermined increase in length. If such a process occurs in the linear region of the stress-strain curve, the relaxation process continues on a new level even if the amplitude of the sinus length-time input function is augmented. The same experiment causes in the lower non-linear region of the stress-strain relation the so-called asymmetric amplitude phenomenon. Further histomechanical features of the liver capsule obtained after defined length-time input functions such as relaxation, static isorheological line, dynamic isorheological curve, increase of the vertices of the dynamic force-time function after static relaxation and dynamic force recovery curve are shown. The phase shift between force and lenth is pointed out. The significance of the biomechanical properties of the liver capsule under physiological and pathological conditions is discussed.
通过应用组织力学方法，在体外分析了人、猪和牛肝包膜的几何定义标本的应变特性。在先前预先确定的长度增加之后，动态松弛与正弦形应变过程下的静态松弛相关。如果这样的过程发生在应力 - 应变曲线的线性区域，即使正弦长度 - 时间输入函数的幅度增加，松弛过程也会在一个新的水平上继续。相同的实验在应力 - 应变关系的较低非线性区域会导致所谓的不对称幅度现象。还展示了在定义的长度 - 时间输入函数后获得的肝包膜的其他组织力学特征，如松弛、静态等流变线、动态等流变曲线、静态松弛后动态力 - 时间函数顶点的增加以及动态力恢复曲线。指出了力与长度之间的相移。讨论了肝包膜生物力学特性在生理和病理条件下的意义。
