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Title: Instability study of soft materials - Modelling and simulation
Keywords: wrinkle, crease, cavitation, humidity–driven bifurcation, soft materials, hydrogel
Issue Date: 6-Jul-2011
Citation: WONG WEI HIN (2011-07-06). Instability study of soft materials - Modelling and simulation. ScholarBank@NUS Repository.
Abstract: Mechanical instabilities are timeless phenomena exhibited by a wide range of materials at all length scales. They are common occurrences in our daily lives, manifesting, for instance, as wrinkles and creases in human skin, fruits and leaves, and peeling of paint from a wall. These instabilities occur when several equilibrium states co-exist in the material system. This thesis focuses on the modelling and simulation of (1) surface instability, (2) cavitation instability and (3) humidity¿driven bifurcation of soft materials, specifically hydrogels and elastomers, both of which are prime candidates as engineering materials for many biomedical and industrial applications. The objective of this research is to gain insights to the initiations and mechanisms of these instabilities in soft materials from mechanics viewpoint through numerical simulation. A novel numerical method has been proposed and demonstrated to study the surface instabilities.
Appears in Collections:Ph.D Theses (Open)

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