May 27 – 30, 2015
Mariehamn, Åland
Europe/Stockholm timezone

The mechanics of invagination and folding

May 28, 2015, 11:30 AM
Conference room, Arkipelag (Mariehamn, Åland)

Conference room, Arkipelag

Mariehamn, Åland


Tuomas Tallinen (University of Jyväskylä)


We address the mechanical folding induced by differential growth in soft layered solids via an elementary model that consists of a soft growing neo-Hookean elastic layer adhered to a deep elastic substrate. The model displays a transition from supercritical smooth folding to subcritical cusped folding as the layer/substrate modulus ratio is varied from above unity toward zero. We demonstrate the diverse patterns of cusped folds that can be generated in three dimensions when the layer and substrate are of comparable softness, providing understanding for some of the compressive folding patterns found in soft tissues.

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