花山岩体位于长江中下游成矿带庐枞矿集区东南部的A型花岗岩带内。详细的岩相学工作显示,花山岩体岩性为正长花岗岩。锆石U-Pb激光定年结果显示,花山正长花岗岩的侵位年龄为(125.2±0.8)Ma,其形成于长江中下游地区早白垩世伸展的构...花山岩体位于长江中下游成矿带庐枞矿集区东南部的A型花岗岩带内。详细的岩相学工作显示,花山岩体岩性为正长花岗岩。锆石U-Pb激光定年结果显示,花山正长花岗岩的侵位年龄为(125.2±0.8)Ma,其形成于长江中下游地区早白垩世伸展的构造背景之下。综合分析前人的年代学研究成果,庐枞矿集区早白垩世岩浆活动可以划分为134~128 Ma、131~124 Ma、99~96 Ma 3个阶段,包括花山岩体在内的A型花岗岩是第二阶段岩浆活动的产物,其形成受控于早白垩世中国东部统一的伸展构造事件。展开更多
A new continuum theory of the constitutive equation of co-rotational derivative type was developed by the author for anisotropic viscoelastic fluid-liquid crystalline (LC) polymers (S.F. Han, 2008, 2010) . This paper ...A new continuum theory of the constitutive equation of co-rotational derivative type was developed by the author for anisotropic viscoelastic fluid-liquid crystalline (LC) polymers (S.F. Han, 2008, 2010) . This paper is a continuation of the recent publication [1] to study extrusion-extensional flow of the fluid. A new concept of simple anisotropic fluid is introduced. On the basis of anisotropic simple fluid, stress behavior is described by velocity gradient tensor F and spin tensor W instead of the velocity gradient tensor D in the classic Leslie?Ericksen continuum theory. A special form of the constitutive equation of the co-rotational type is established for the fluid. Using the special form of the constitutive equation in components a computational analytical theory of the extrusion-extensional flow is developed for the LC polymer liquids - anisotropic viscoelastic fluid. Application of the constitutive theory to the flow is successful in predicting bifurcation of elongational viscosity and contraction of extrudate for LC polymer liquids–anisotropic viscoelastic fluid. The contraction of extrudate of LC polymer liquids may be associated with the stored elastic energy conversion into that necessary for bifurcation of elongational viscosity in extrusion extensional flow of the fluid.展开更多
文摘花山岩体位于长江中下游成矿带庐枞矿集区东南部的A型花岗岩带内。详细的岩相学工作显示,花山岩体岩性为正长花岗岩。锆石U-Pb激光定年结果显示,花山正长花岗岩的侵位年龄为(125.2±0.8)Ma,其形成于长江中下游地区早白垩世伸展的构造背景之下。综合分析前人的年代学研究成果,庐枞矿集区早白垩世岩浆活动可以划分为134~128 Ma、131~124 Ma、99~96 Ma 3个阶段,包括花山岩体在内的A型花岗岩是第二阶段岩浆活动的产物,其形成受控于早白垩世中国东部统一的伸展构造事件。
文摘A new continuum theory of the constitutive equation of co-rotational derivative type was developed by the author for anisotropic viscoelastic fluid-liquid crystalline (LC) polymers (S.F. Han, 2008, 2010) . This paper is a continuation of the recent publication [1] to study extrusion-extensional flow of the fluid. A new concept of simple anisotropic fluid is introduced. On the basis of anisotropic simple fluid, stress behavior is described by velocity gradient tensor F and spin tensor W instead of the velocity gradient tensor D in the classic Leslie?Ericksen continuum theory. A special form of the constitutive equation of the co-rotational type is established for the fluid. Using the special form of the constitutive equation in components a computational analytical theory of the extrusion-extensional flow is developed for the LC polymer liquids - anisotropic viscoelastic fluid. Application of the constitutive theory to the flow is successful in predicting bifurcation of elongational viscosity and contraction of extrudate for LC polymer liquids–anisotropic viscoelastic fluid. The contraction of extrudate of LC polymer liquids may be associated with the stored elastic energy conversion into that necessary for bifurcation of elongational viscosity in extrusion extensional flow of the fluid.
