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http://dx.doi.org/10.7746/jkros.2017.12.3.332

Optimality Investigation of Bending Stiffness According to Particle Size Distribution  

Song, Eun-Jeong (Mechanical Engineering, Sungkyunkwan University)
Lee, Young-Min (Mechanical Engineering, Sungkyunkwan University)
Moon, Hyungpil (Mechanical Engineering, Sungkyunkwan University)
Choi, Hyouk Ryeol (Mechanical Engineering, Sungkyunkwan University)
Koo, Ja Choon (Mechanical Engineering, Sungkyunkwan University)
Publication Information
The Journal of Korea Robotics Society / v.12, no.3, 2017 , pp. 332-338 More about this Journal
Abstract
As an interpretation of existing jamming effects, the main variables affecting the increase in stiffness due to jamming are known as system density, jamming density, pressure, and particulate temperature. The main variable, jamming density, is closely related to the distribution of particle size and contact properties such as particle shape and friction. However, the complexity of these variables makes it difficult to fully understand the mechanism of the jamming effect. In this paper, we focus on the jamming effects of particles that have more elastic properties than particles such as sand and coffee powder, which are commonly used as constituent particles of existing jamming, in order to reduce complicated factors such as temperature and concentrate on jamming effects based on elastic characteristics of particles. It was experimentally explored the possibility of increasing stiffness by mixing particles of different sizes rather than simply increasing the bending stiffness by controlling the particle size. Through simulations and experiments, we found a case where the stiffness of each particle size distribution is larger than the stiffness of each particle size.
Keywords
Variable-stiffness; Jamming Effect; Mixture; Size Distribution;
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