%0 Journal Article
%T DISTURBED CONSTITUTIVE EQUATION AND INSTABILITY OF EXTENSIONAL FLOW OF VISCOELASTIC FLUIDS<br>扰动本构方程及粘弹流体拉伸流动不稳定性
%A Han Shifang
%A <br>韩式方
%J 力学学报
%D 1993
%I 
%X In the present paper a concept of "quasi-short memory" is introduced instead of "short memory" in order to develop a theory for disturbed constitutive equation for the basic flow of non-Newtonian fluids. The constitutive equation is derived for general basic flow and rheological models. The constitutive equation of second order for disturbed extensional flow is used to study the instability of stretching sheet of viscoelastic fluid. The instability criterion is given for general rheological model and the application is given for the upper-convected Maxwell model.
%K constitutive theory
%K extensional flow
%K viscoelastic fluid<br>粘弹性流动
%K 扰动本构方程
%K 拉伸流动
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=6D22F2FCE9F3F0BFB484692E20A72824&yid=D418FDC97F7C2EBA&vid=C5154311167311FE&iid=0B39A22176CE99FB&sid=527AEE9F3446633A&eid=F9F74EC1AA08A7B9&journal_id=0459-1879&journal_name=力学学报&referenced_num=0&reference_num=6