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iTunes Lectures CM4650
Polymer Rheology

Dr. F. A. Morrison


1
Introduction to Rheology


2
Math review: vectors and tensors, Einstein notation


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Blizzard day off 2007


19
Material functions: predictions of Newtonian model in elongation; predictions of modified Newtonian model; begin Experimental observations, effect of MW on viscosity

20
Experimental Observations: effect of MW and architecture on viscosity



Spring Break


21
Experimental Observations: SAOS, damping function in large-amplitude step strain


22
Review Experimental observations, introduction to GNF


23
GNF:  problem solving: pressure driven flow in a tube with PL GNF

24
GNF:  problem solving:  drag flow of a PL GNF


25
LVE:  GNF doesn't have memory; try simple memory model

26
LVE:  Maxwell model; integral Maxwell model; predict step-strain material functions with Maxwell model

27
Exam 2 review/prep


28
LVE:  generalized Maxwell model; generalized linear-viscoelastic model


29
LVE: GLVE in SAOS; discuss turntable example (no details covered, see handout on web)


30
LVE:  What's wrong with GLVE?  What is the strain measure?


31
Advanced:  what is infinitesimal strain tensor in rigid rotation?  predicts angle dependene of stress (wrong); derive F, Finv

32
Advanced: polar decomposition, C, Cinv; Lodge model; Lodge model in turntable example; upper convected time derivative

33
Advanced: other advanced constitutive models, Jeffreys, Oldroyd, White-Metzner, Rivllin-Sawyers; intro to molecular modeling


34
Rheometry:  Beginning of Rheometry, capillary flow, stress and shear rate in capillary flow (Newtonian, Power-law),  Rabinowitz correction
2007
18 April 2008
35
Rheometry:  Corrections to capillary flow; cone and plate, parallel plate; compare geometries
2007
21 April 2008
36
Rheometry:  Elongational flows; HW help:  calculate start-up function for Lodge model
2007
23 April 2008


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