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Friday 27 October 2017, 14:00-15:00
Elastic instabilities in soft solids
- đ¤ Speaker: Dr John Biggins, CUED
- đ Date & Time: Friday 27 October 2017, 14:00 - 15:00
- đ Venue: Oatley Seminar Room, Department of Engineering
Abstract
We prototypical elastic instability is the buckling of a slender column under a compressive load. Soft elastic solids, such as rubbers, gels, and biological tissues, are united by their ability to sustain very large shape changes, and consequently undergo a range of more exotic elastic instabilities, many of which we are only now understanding. In this talk I will discuss the three instabilities I spoke about in my recent CUED job talk – fingering in soft solid layers under tension, beading in solid cylinders subject to surface tension and sulcus formation at the boundary of soft solids in compression – then present for the first time some new results on peristaltic undulation in cylindrical cavities and fingering in solid layers subject to gravity. I will finish by arguing that elastic instability underpins the formation of the folds on the surface of the human brain.
Series This talk is part of the Engineering - Mechanics and Materials Seminar Series series.
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