文献类型：期刊文献

中文题名：弹性-触变性流体的定态剪切粘度与瞬态应力响应

英文题名：STEADY-SHEAR VISCOSITY AND TRANSIENT STRESS RESPONSE FOR ELASTO-THIXOTROPIC FLUIDS

作者：方图南[1];林贻清[2]

机构：[1]华东化工学院,上海200237;[2]蒙那西大学化工系

年份：1991

卷号：23

期号：5

起止页码：542

中文期刊名：力学学报

外文期刊名：Chinese Journal of Theoretical and Applied Mechanics

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：弹性;触变性流体;定态剪切粘度

外文关键词：elasto-thixotropic fluid, rheological model, steadyshear viscosity, Transient stress response

摘要：用四种不同级数的动力学方程以表示分散物系内结构单元的聚集与解聚速率,并导出相应的定态和瞬态结构参数式。设弹性模量 G 与结构参数的关系具有与粘度函数相同的形式,求解 Maxwell 方程获得瞬态应力响应。 两种乳浊液的实验证明本文提出的流变模型可以表征弹性-触变性流体的流变性。用n=m=2 的模型可对这些乳浊液作出最佳模拟。
A phenomenological mode! for dispersed systems which exhibit complex theological behaviour such as shear and time-dependent viscosity, yield stress, and elastici'y is proposed. The model extends the Quemeda model to describe the viscosity function with a structural parameter A which varies according t'o different kinetic orders of particle aggregation and segregation. The transient stress response is obtained by solving on instantaneous Maxwell model with an assumed shear modulus function G of the same form as the viscosity function 7). Accuracy of theproposed model is verified experimentally with the results obtained for 2 oil (creosote)/water emulsions. The model that gives the best fit of experimental data appears to be the one with kinetic orders n=m=2.