【摘要】 研究了一个新的动脉壁零应力状态测量方法和动脉壁应变分析方法．该方法是测量动脉壁零应力状态的真实内外侧孤长，以此为基础对动脉壁进行应变分析．对白兔主动脉、颈动脉和股动脉比较了３种测量分析方法．结果表明，弧长分析方法是较好的分析方法．在动脉壁假设为均质材料的情况下，最好采用弧长分析方法．在测量动脉壁零应力状态的几何尺寸时，小圆环试件的纵向长度在Ｄ／２～２Ｄ内对测量结果没有影响．更多还原

【Abstract】 The zero stress state of an artery is brought by cutting a ring of the artery radically and, then, the ring segment springs open into a sector. The zero stress state is a foundation of strain analysis of an artery. There are two methods to measure the dimensions of a blood vessel in the zero stress state. First, it is a way to measure immediately an opening angle. Second, it is a method of assuming that a cut-open, stress-free specimen forms a circular sector and there are two edge angles. A new method to measure the dimensions of an arterial wall in the zero stress state is proposed. The new method is to measure immediately the curve length of an arterial wall in zero stress state by computer image process (CIP). The curve lengths are used to define a standard circle for the strain analysis. These three methods on descending thoracic aortas, common carotid arteries, and femoral arteries of white rabbits are compared with each other. Conclusions are: (1) the new method, i.e, the strain analysis method from the curve length, is the best one among the three methods of strain analysis. (2) The lengths of a ring segment (the length between D I 2 and 2D) do not affect the dimensions of the zero stress state.更多还原