HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Creative Research Institution >
Peer-reviewed Journal Articles, etc >

Double-peaked impact force of very soft gel balls

Files in This Item:
PRE_73_031403.pdf243.77 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Double-peaked impact force of very soft gel balls
Authors: Tanaka, Yoshimi1 Browse this author
Authors(alt): 田中, 良巳1
Issue Date: 8-Mar-2006
Publisher: American Physical Society
Journal Title: Physical Review E
Volume: 73
Issue: 3
Start Page: 031403
Publisher DOI: 10.1103/PhysRevE.73.031403
PMID: 16605520
Abstract: We measure the time change of the contact force F(t) during the impact between very soft gel balls and a rigid substrate. For low-impact velocities V-i, F(t) is single-peak functions as intuitively expected; and the relation between V-i and the peak value F-m [of F(t)] obeys the prediction of the standard theory for the impact in the linear elastic regime (i.e., the Hertz theory). On the other hand, for large V-i, where the gel ball deforms into thin pancakelike shapes, F(t) becomes double-peak functions. We compare the data of F(t) for large V-i with a prediction of a model proposed in our previous study [Tanaka, Europhys. J. E 18, 95 (2005)]. The model can quantitatively reproduce the experimental F-m-V-i relation, and shows that the double-peak behavior of F(t) is a consequence of the expanding deformation of the pancake-shaped gel, i.e., spreading motion parallel to the substrate.
Rights: Copyright © 2006 American Physical Society
Type: article
Appears in Collections:創成研究機構 (Creative Research Institution) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 田中 良巳

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University