In order to compare the distribution of circumferential stresses before graft (under the vein pressure) and immediately after graft (under the arterial pressure), the p(pressure)- V(volume) data of vein at certain axial extension ratio was measured and fi.
为了比较移植前(静脉压作用下)和移植后(动脉压作用下)静脉管壁的周向应力分布,本文通过检测一定轴向伸长比条件下静脉管的p(压力)——V(容积)试验数据,利用3参数的应变能密度函数对实验数据进行拟合,进而求得静脉管壁的残余应力和沿血管壁的周向应力分布。
In this paper, the circumferential stress distribution along the arterial wall thickness was determined using p-V exponential relationship.
通过检测，得到在体轴向伸长比条件下血管段的压力－容积（ｐ－Ｖ）数据，利用指数函数关系，求得在一定内压作用下血管壁周向应力沿壁厚的分布。
The theory on crack mechanics of maximum circumferential stress is used for deducing cracking angle and cracking stress of the cylindrical thin shell with crack under the action of twisting moment,and a crack criterion on Ⅰ-Ⅱ compound crack is established.
采用断裂力学的最大周向应力理论 ,推导出带有穿透裂纹的圆柱薄壳在扭矩作用下裂纹开始扩展的开裂角和开裂应力 ;建立了Ⅰ -Ⅱ复合型裂纹的断裂准则 通过分析该圆柱薄壳的破坏形态 ,确定其临界应