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Evolution of instabilities in filament buckling processes.

Abstract

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.

Links

Authors+Show Affiliations

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Instituto de Ciencias, Universidad Nacional de Gral. Sarmiento, Los Polvorines, Buenos Aires, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.

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Instituto de Ciencias, Universidad Nacional de Gral. Sarmiento, Los Polvorines, Buenos Aires, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.

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Departamento de Física & IFIBA-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Argentina.

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Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina. Grupo de Medios Porosos, Facultad de Ingeniería, Universidad Nacional de Buenos Aires, Argentina.

Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina. Departamento de Física & IFIBA-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Argentina.

Source

Physical review. E 99:3-1 2019 Mar pg 033004

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30999474

Citation

Monastra, A G., et al. "Evolution of Instabilities in Filament Buckling Processes." Physical Review. E, vol. 99, no. 3-1, 2019, p. 033004.
Monastra AG, Carusela MF, van der Velde G, et al. Evolution of instabilities in filament buckling processes. Phys Rev E. 2019;99(3-1):033004.
Monastra, A. G., Carusela, M. F., van der Velde, G., D'Angelo, M. V., & Bruno, L. (2019). Evolution of instabilities in filament buckling processes. Physical Review. E, 99(3-1), p. 033004. doi:10.1103/PhysRevE.99.033004.
Monastra AG, et al. Evolution of Instabilities in Filament Buckling Processes. Phys Rev E. 2019;99(3-1):033004. PubMed PMID: 30999474.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evolution of instabilities in filament buckling processes. AU - Monastra,A G, AU - Carusela,M F, AU - van der Velde,G, AU - D'Angelo,M V, AU - Bruno,L, PY - 2019/01/09/received PY - 2019/4/20/entrez PY - 2019/4/20/pubmed PY - 2019/4/20/medline SP - 033004 EP - 033004 JF - Physical review. E JO - Phys Rev E VL - 99 IS - 3-1 N2 - 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. SN - 2470-0053 UR - https://www.unboundmedicine.com/medline/citation/30999474/Evolution_of_instabilities_in_filament_buckling_processes DB - PRIME DP - Unbound Medicine ER -