Liu, Chen and Fujimoto, Yukio and Tanaka, Yoshikazu and Shintaku, Eiji and Nakanishi, Toshiki (2016) Viscosity Transient Phenomenon in Drop Impact Testing of Soft Material. World Journal of Mechanics, 06 (05). pp. 181-191. ISSN 2160-049X
WJM_2016050915133377.pdf - Published Version
Download (1MB)
Abstract
The authors carried out drop impact tests for several soft materials under a flat frontal impact condition in which a drop hammer with a flat bottom surface strikes a plate-like soft material in the normal direction. The experimental results indicated that the impact force waveforms of soft materials consisted of a thorn-shaped waveform and a subsequent mountain-shaped waveform. The thorn-shaped waveform was strongly affected by the strain rate. In the present study, the occurrence mechanism of this distinctive waveform was discussed from the viewpoint of the viscosity transient phenomenon. A standard linear solid (SLS) model in which the viscosity transient phenomenon was considered was applied to the simulation. Some features of the impact force waveform of soft materials could be explained by the SLS model. Furthermore, the thorn-shape waveform could also be observed in the impact force waveforms of human skin and free-falling hollow balls.
Item Type: | Article |
---|---|
Subjects: | STM Digital > Engineering |
Depositing User: | Unnamed user with email support@stmdigital.org |
Date Deposited: | 10 Feb 2023 12:05 |
Last Modified: | 01 Aug 2024 10:27 |
URI: | http://research.asianarticleeprint.com/id/eprint/163 |