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Dynamic Buckling of...
Dynamic Buckling of a Filament Impacted by a Falling Droplet
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- Lu, Meng (författare)
- Zhejiang Univ, Dept Mech, State Key Lab Fluid Power & Mech Syst, Hangzhou 310027, Peoples R China.
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- Deng, Jian (författare)
- Zhejiang Univ, Dept Mech, State Key Lab Fluid Power & Mech Syst, Hangzhou 310027, Peoples R China.
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- Mao, Xuerui (författare)
- Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China.
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- Brandt, Luca (författare)
- KTH,Linné Flow Center, FLOW,Strömningsmekanik och Teknisk Akustik
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Zhejiang Univ, Dept Mech, State Key Lab Fluid Power & Mech Syst, Hangzhou 310027, Peoples R China Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China. (creator_code:org_t)
- American Physical Society (APS), 2023
- 2023
- Engelska.
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Ingår i: Physical Review Letters. - : American Physical Society (APS). - 0031-9007 .- 1079-7114. ; 131:18
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We investigate the buckling dynamics of an elastic filament impacted axially by a falling liquid droplet, and identify the buckling modes through a combination of experimental and theoretical analyses. A phase diagram is constructed on a plane defined by two primary parameters: the falling height and the filament length. Two transition boundaries are observed, with one marking the occurrence of dynamic buckling and the other separating the buckling regime into two distinct modes. Notably, the hydrodynamic viscous force of the liquid dominates during the impact, with the dynamic buckling instability predicted by a single elastoviscous number. The critical load is twice the critical static load, which is, however, lower for the deformable droplet utilized in our study, as compared to a solid object. An additional time-dependent simulation on a longer filament exhibits a higher buckling mode, succeeded by a more distinct coarsening process than our experimental observations.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
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