Normal stress differences and yield stresses in attractive particle networks

David I. Verrelli*, Adam R. Kilcullen

*Corresponding author for this work

Research output: Contribution to journalReview article

5 Citations (Scopus)
57 Downloads (Pure)

Abstract

The nature of attractive particulate networks, yield stresses, and normal stress differences is systematically reviewed, each in terms of the relevant definitions, underlying mechanisms, and current measurement techniques. With this foundation, experimental observations of normal stress differences in some suspensions and colloidal systems are surveyed, along with constitutive models that allow for normal stress differences to arise prior to yielding. Yield stresses are a hallmark of attractive colloidal systems and vital in their processing. In contrast, little attention has been given to the role of normal stress differences in these systems. The presence or absence of normal stress differences necessarily affects the isotropy of the normal stress field through the solid particulate phase (treated as a continuum), in turn affecting estimation of yield stress. Given the importance of yield stresses in dealing with practical industrial problems, and in understanding fundamental behaviours, it is important to ensure that yield measurements can be relied upon.

Original languageEnglish
Article number1716598
Pages (from-to)1-21
Number of pages21
JournalAdvances in Condensed Matter Physics
Volume2016
DOIs
Publication statusPublished - 2016

Bibliographical note

Copyright the Author(s) 2016. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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