NDLI: Impact of gel balls beyond the Hertzian regime

Content Provider	Springer Nature Link
Author	Tanaka, Y.
Copyright Year	2005
Abstract	We study experimentally the impact of spherical gel balls on a rigid substrate, where the balls largely deform like a pancake at high impact velocities. In our previous study (Y. Tanaka, Y. Yamazaki, K. Okumura, Europhys. Lett. 63, 149 (2003)), we measured the contact time τf and maximally deformed size versus impact velocity and explained the behaviors at the scaling level. In this study, we further measure τm, the time required to reach the maximum deformation (from the initial contact), and the restitution coefficient e. We also make a static experiment where we obtain the force-deformation curve of the gel balls up to fairly large deformations to explain the data on the impact. We propose two phenomenological treatments going beyond the scaling argument, one for intermediate impact velocities and the other for large velocities; the former is based on the static experiment while the latter on a Lagrangian constructed from appropriate constraints. Results from these treatments reproduce the experimental behavior of τm.
Starting Page	95
Ending Page	103
Page Count	9
File Format	PDF
ISSN	12928941
Journal	The European Physical Journal E
Volume Number	18
Issue Number	1
e-ISSN	1292895X
Language	English
Publisher	Società Italiana di Fisica
Publisher Date	2005-09-15
Publisher Place	Bologna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Soft Matter, Complex Fluids Biotechnology Polymer Sciences Nonlinear Dynamics, Complex Systems, Chaos, Neural Networks Surfaces and Interfaces, Thin Films Biophysics/Biomedical Physics
Content Type	Text
Resource Type	Article
Subject	Chemistry Medicine Biophysics Materials Science Surfaces and Interfaces Biotechnology

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