连续统 corotational 衍生物类型的组成的理论为各向异性的粘弹性的液体液体被开发水晶(LC ) 聚合物。各向异性的粘弹性的简单液体的一个概念被介绍。压力张肌被第一 Rivlin Ericksen 张肌 A 和关于一个 co 旋转的坐标系统测量的旋转张肌 W 描述而不是在经典莱斯莉·埃里克森理论的速度坡度张肌 D。这个理论上的模型 LCP-H 被建议, shear 压力的典型 unsymmetric 行为为 LC 聚合物液体被预言。二砍从而强调在砍聚合物液体导致的 LC 的流动内部旋涡流动和旋转流动。结论能为现代液体的理论意味着是水晶的显示技术。由使用方程,挤出前液体的紧张的流动被学习因为纤维旋转 LC 聚合物融化,有变化的 elongational 粘性对延期率砍率在图被给。当主任向量的 orientational 运动被考虑时, elongational 粘性和分叉行为的可观的增加被观察。聚合物融化的 LC 的 extrudate 的收缩被高 elongational 粘性引起。为各向异性的粘弹性的液体,重要进展根据一系列新各向异性的非牛顿的液体问题能根据哪个被处理在组成的方程上在调查被做了。
A continuum constitutive theory of corotational derivative type is developed for the anisotropic viscoelastic fluid-liquid crystalline (LC) polymers. A concept of anisotropic viscoelastic simple fluid is introduced. The stress tensor instead of the velocity gradient tensor D in the classic Leslie-Ericksen theory is described by the first Rivlin-Ericksen tensor A and a spin tensor W measured with respect to a co-rotational coordinate system. A model LCP-H on this theory is proposed and the characteristic unsymmetric behaviour of the shear stress is predicted for LC polymer liquids. Two shear stresses thereby in shear flow of LC polymer liquids lead to internal vortex flow and rotational flow. The conclusion could be of theoretical meaning for the modern liquid crystalline display technology. By using the equation, extrusion-extensional flows of the fluid are studied for fiber spinning of LC polymer melts, the elongational viscosity vs. extension rate with variation of shear rate is given in figures. A considerable increase of elongational viscosity and bifurcation behaviour are observed when the orientational motion of the director vector is considered. The contraction of extru- date of LC polymer melts is caused by the high elongational viscosity. For anisotropic viscoelastic fluids, an important advance has been made in the investigation on the constitutive equation on the basis of which a seriesof new anisotropic non-Newtonian fluid problems can be addressed.