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Related Experiment Video

Updated: May 27, 2026

Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging

Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging

Published on: April 28, 2022

Flectofin: a hingeless flapping mechanism inspired by nature.

J Lienhard¹, S Schleicher, S Poppinga

¹Institute of Building Structures and Structural Design-ITKE, University of Stuttgart, Germany.

Bioinspiration & Biomimetics

|December 1, 2011

Summary

This study introduces pliable structures using elastic deformation in fibre-reinforced polymers for architectural deployable systems. This biomimetic approach, inspired by plants, creates hingeless kinetic structures like the patented Flectofin®.

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Area of Science:

Biomimetics
Materials Science
Architectural Engineering

Background:

Traditional deployable systems rely on local hinges, limiting design possibilities.
Elastic deformation offers a novel approach to achieving kinetic movement in structures.
Fibre-reinforced polymers (FRP) provide the necessary properties for elastic deformation.

Purpose of the Study:

To present a novel biomimetic approach for deployable architectural systems using elastic deformation.
To explore the abstraction of elastic kinetics from plant mechanisms.
To introduce the patented Flectofin® principle for hingeless kinetic structures.

Main Methods:

Biomimetic abstraction of plant kinematics, specifically the Bird-Of-Paradise flower's pollination mechanism.
Form-finding and simulation methods to develop elastic kinetic principles.
Utilizing fibre-reinforced polymers (FRP) like glass fibre reinforced polymer (GFRP) for calibrated elastic deformations.

Main Results:

Development of pliable structures that achieve kinetic movement through elastic deformation, eliminating the need for hinges.
Successful abstraction of plant-based elastic kinetics into an architectural design principle.
Patenting of the Flectofin® bio-inspired hingeless flapping device.

Conclusions:

Elastic deformation in FRP offers a new paradigm for designing complex, kinetic architectural deployable systems.
Biomimicry provides effective strategies for deriving innovative engineering solutions from natural mechanisms.
The Flectofin® principle demonstrates the potential of pliable structures in architecture.