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Gap size effect on the tribological characteristics of the roller for deep-sea mining robot

Authors
Oh, Jae-WonJung, Jung-YeulKim, Hyung-WooHong, SupSung, Ki-YoungBae, Dae-Sung
Issue Date
2017
Publisher
TAYLOR & FRANCIS INC
Keywords
Deep-sea mining robot; effective viscosity; gap size effect; tribological characteristics
Citation
MARINE GEORESOURCES & GEOTECHNOLOGY, v.35, no.1, pp 120 - 126
Pages
7
Journal Title
MARINE GEORESOURCES & GEOTECHNOLOGY
Volume
35
Number
1
Start Page
120
End Page
126
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/640
DOI
10.1080/1064119X.2015.1114544
ISSN
1064-119X
1521-0618
Abstract
To design the deep-sea mining robot, it is essential to analyze the tribological characteristics of its roller. In this study, we introduced the dynamic simulation model to analyze the tribological characteristics of the roller for deep-sea mining robot, considering the temperature, viscosity, viscous damping force, and gap size between the inner and outer rib seals. Effective viscosity changes with gap size in micro/nanoscale while the effective viscosity is equal to the kinematic viscosity in macroscale. For the stable operation of the roller, the effective viscosity must be less than the critical viscosity. As the gap size decreases, the effective viscosity increases while the critical viscosity decreases. This study shows that the gap size between the inner and outer rib seals of roller is the most dominant factor in designing the roller for deep-sea mining robot to use at relatively low temperatures that are found in the deep-sea environments.
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연구전략본부 (KRISO 유럽센터)
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