Drop-on-coilable-fibre systems exhibit negative stiffness events and transitions in coiling morphology - Sorbonne Université Access content directly
Journal Articles Soft Matter Year : 2017

Drop-on-coilable-fibre systems exhibit negative stiffness events and transitions in coiling morphology

Abstract

We investigate the mechanics of elastic fibres carrying liquid droplets. In such systems, buckling may localize inside the drop cavity if the fibre is thin enough. This so-called drop-on-coilable-fibre system exhibits a surprising liquid-like response under compression, and a solid-like response under tension. Here we analyze this unconventional behavior in further details and find theoretical, numerical and experimental evidences of negative stiffness events. We find that the first and main negative stiffness regime owes its existence to the transfer of capillary-stored energy into mechanical curvature energy. The following negative stiffness events are associated with changes in the coiling morphology of the fibre. Eventually coiling becomes tightly locked into an ordered phase where liquid and solid deformations coexist.
Fichier principal
Vignette du fichier
1703.02614 (4.13 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

hal-01582510 , version 1 (09-12-2023)

Identifiers

Cite

Hervé Elettro, Fritz Vollrath, Arnaud Antkowiak, Sébastien Neukirch. Drop-on-coilable-fibre systems exhibit negative stiffness events and transitions in coiling morphology. Soft Matter, 2017, 13 (33), pp.5509 - 5517. ⟨10.1039/C7SM00368D⟩. ⟨hal-01582510⟩
60 View
3 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More