IC   26529
INSTITUTO DE CALCULO REBECA CHEREP DE GUBER
Unidad Ejecutora - UE
artículos
Título:
Evolution of instabilities in filament buckling processes
Autor/es:
MONASTRA, A.G.; D'ANGELO, M.V.; CARUSELA, M.F.; BRUNO, L.; CARUSELA, M.F.; BRUNO, L.; VAN DER VELDE, G.; VAN DER VELDE, G.; MONASTRA, A.G.; D'ANGELO, M.V.
Revista:
Physical Review E
Editorial:
American Physical Society
Referencias:
Año: 2019 vol. 99
ISSN:
2470-0045
Resumen:
In this work we study the dynamical buckling process of a thin filament immersed in a highly viscous medium. We perform an experimental study to track the shape evolution of the filament during a constant velocity compression. Numerical simulations reproduce the dynamical features observed from the experimental data and allow quantifying the filament´s load. We observe that both the filament´s load and the wave number evolve in a stepwise manner. In order to achieve a physical insight of the process, we apply a theoretical model to describe the buckling of a filament in a viscous medium. We solve a hydrodynamic equation in terms of normal modes for clamped-clamped boundary conditions and constant applied load. We find a good agreement between experimental data and simulations, suggesting that the proposed mechanistic model captures the essential features underlying the dynamical buckling process.