TY - JOUR
T1 - Dynamic Buckling of a Filament Impacted by a Falling Droplet
AU - Lu, Meng
AU - Deng, Jian
AU - Mao, Xuerui
AU - Brandt, Luca
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/11/3
Y1 - 2023/11/3
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85176122280&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.131.184002
DO - 10.1103/PhysRevLett.131.184002
M3 - Article
C2 - 37977627
AN - SCOPUS:85176122280
SN - 0031-9007
VL - 131
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 184002
ER -