CE30 - Physique de la matière condensée et de la matière diluée

Mechanics of bioinspired fibrous material – BioFibMat

Submission summary

The research objective of this proposal is to rationalize the mechanics of assemblies of passive flexible frictional fibers and to prototype functional fibrous materials that deploy and react to an external stimulus. Passive fibers like pine needles are known to create aggregate that can be shaped in complex form when compressed. One striking difference between fibers and other granular materials is the effective cohesion of their assembly. We will first describe how the interplay between bending of the fibers and frictional interaction dominates the mechanics of the assembly for passive fibers. In a second step, we will study the dynamics of the packing when the fibers are active and change shape, a strategy used in some plants to perform motion and eject their seeds. We will study two plant systems where the organization of active fibers leads to two radically different dynamics and transfer those strategies to design new materials with tailored mechanical and dynamic properties.

Project coordination

Joël Marthelot (Institut universitaire des systèmes thermiques industriels)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

IUSTI Institut universitaire des systèmes thermiques industriels

Help of the ANR 268,593 euros
Beginning and duration of the scientific project: October 2021 - 48 Months

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