Elastodynamics in two contexts, foam micromechanics and ribbon curling

Dr. Buddhapriya Chakrabarti (Durham University)

Thursday 3rd October, 2013 14:00-15:00 Maths 326


I will describe my work on two problems of elastodynamics, 
curling of ribbons and foam micromechanics. Imagine holding a ribbon 
between a blade and your thumb and running it along its length. Florists 
often use this to form helical bows to wrap bouquets. What determines 
its shape, which face does it curl on and what determines its 
handedness. Using a combination of experiments and theory I will explain 
the process of ribbon curling quantitatively. My second example will 
focus on micromechanics of foam in particular foam degradation when 
subjected to periodic forcing. Using a combination of experiments and 
theory we provide cues for better designing cushioning materials that 
maximize dissipation and minimize degradation.

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