Filament instability under constant loads

Buckling of semi-flexible filaments appears in different systems and scales. Some examples are: fibers in geophysical applications, microtubules in the cytoplasm of eukaryotic cells and deformation of polymers freely suspended in a flow. In these examples, instabilities arise when a system's pa...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-04, Vol.1012 (1), p.12010
Main Authors: Monastra, A. G., Carusela, M. F., D'Angelo, M. V., Bruno, L.
Format: Article
Language:English
Subjects:
Buckling
Cytoplasm
Evolution
Filaments
Physics
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Summary:Buckling of semi-flexible filaments appears in different systems and scales. Some examples are: fibers in geophysical applications, microtubules in the cytoplasm of eukaryotic cells and deformation of polymers freely suspended in a flow. In these examples, instabilities arise when a system's parameter exceeds a critical value, being the Euler force the most known. However, the complete time evolution and wavelength of buckling processes are not fully understood. In this work we solve analytically the time evolution of a filament under a constant compressive force in the small amplitude approximation. This gives an insight into the variable force scenario in terms of normal modes. The evolution is highly sensitive to the initial configuration and to the magnitude of the compressive load. This model can be a suitable approach to many different real situations.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1012/1/012010