Large amplitude oscillatory shear flow: Microstructural assessment of polymeric systems

M Kamkar, R Salehiyan, TB Goudoulas… - Progress in Polymer …, 2022 - Elsevier
Since the first publications of large amplitude oscillatory shear (LAOS) responses of
polymeric materials in the 1960s, different approaches have been developed to express …

Describing and prescribing the constitutive response of yield stress fluids using large amplitude oscillatory shear stress (LAOStress)

CJ Dimitriou, RH Ewoldt, GH McKinley - Journal of Rheology, 2013 - pubs.aip.org
Large amplitude oscillatory shear (LAOS) is used as a tool to probe the nonlinear
rheological response of a model elasto-viscoplastic material (a Carbopol microgel). In …

Polymer fluid dynamics: Continuum and molecular approaches

RB Bird, AJ Giacomin - Annual review of chemical and …, 2016 - annualreviews.org
To solve problems in polymer fluid dynamics, one needs the equations of continuity, motion,
and energy. The last two equations contain the stress tensor and the heat-flux vector for the …

Large-amplitude oscillatory shear flow from the corotational Maxwell model

AJ Giacomin, RB Bird, LM Johnson, AW Mix - Journal of Non-Newtonian …, 2011 - Elsevier
Using the single relaxation time corotational Maxwell fluid, we derive explicit analytical
expressions for the first, third, and fifth harmonics of the alternating shear stress response in …

Defining nonlinear rheological material functions for oscillatory shear

RH Ewoldt - Journal of Rheology, 2013 - pubs.aip.org
Material functions underlie our understanding of rheology. They form the descriptive
language of rheologists and require clear definitions. Here, it is shown that the definitions of …

Exact analytical solution for large-amplitude oscillatory shear flow from Oldroyd 8-constant framework: Shear stress

C Saengow, AJ Giacomin, C Kolitawong - Physics of Fluids, 2017 - pubs.aip.org
The Oldroyd 8-constant model is a continuum framework containing, as special cases, many
important constitutive equations for elastic liquids. When polymeric liquids undergo large …

Application of nonlinear rheology to assess the effect of secondary nanofiller on network structure of hybrid polymer nanocomposites

M Kamkar, E Aliabadian, A Shayesteh Zeraati… - Physics of …, 2018 - pubs.aip.org
Carbon nanotube (CNT)/polymer nanocomposites exhibit excellent electrical properties by
forming a percolated network. Adding a secondary filler can significantly affect the CNTs' …

Dilute rigid dumbbell suspensions in large-amplitude oscillatory shear flow: Shear stress response

RB Bird, AJ Giacomin, AM Schmalzer… - The Journal of chemical …, 2014 - pubs.aip.org
We examine the simplest relevant molecular model for large-amplitude shear (LAOS) flow of
a polymeric liquid: the suspension of rigid dumbbells in a Newtonian solvent. We find explicit …

Large amplitude oscillatory shear and Fourier-transform rheology for a high-density polyethylene: Experiments and numerical simulation

B Debbaut, H Burhin - Journal of Rheology, 2002 - pubs.aip.org
Rheological characterization of a high-density polyethylene is performed by means of
measurements of the storage and loss moduli with a new viscometric device. Shear viscosity …

Investigation of the solid–liquid transition of highly concentrated suspensions in oscillatory amplitude sweeps

L Heymann, S Peukert, N Aksel - Journal of Rheology, 2002 - pubs.aip.org
Suspensions of quasimonodisperse polymethylmethacrylate spheres with mean diameters
of 4.7 and 3.1 μm, dispersed in a low-molecular-weight polydimethylsiloxane, were …