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 articlepeer-review

    11 Citations (Scopus)
    127 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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