A study of the kinematic characteristic of a coupling device between the buffer system and the flexible pipe of a deep-seabed mining system

Abstract

This paper concerns the kinematic characteristics of a coupling device in a deep-seabed mining system. This coupling device connects the buffer system and the flexible pipe. The motion of the buffer system, flexible pipe and mining robot are affected by the coupling device. So the coupling device should be considered as a major factor when this device is designed. Therefore, we find a stable kinematic device, and apply it to the design coupling device through this study. The kinematic characteristics of the coupling device are analyzed by multi-body dynamics simulation method, and finite element method. The dynamic analysis model was built in the commercial software DAFUL. The Fluid Structure Interaction (FSI) method is applied to build the deep-seabed environment. Hydrodynamic force and moment are applied in the dynamic model for the FSI method. The loads and deformation of flexible pipe are estimated for analysis results of the kinematic characteristics.

Identification of marginal and joint CDFs using bivariate type I interval multiply censored data for RBDO of a pick-up device of a pilot mining robot

“…The deep-sea pilot mining robot has been developed by using various computer simulation-based design methods to reduce the cost of deep-sea experiment (Lee et al 2012;Yoon et al 2012;Oh et al 2014Oh et al , 2016Oh et al , 2020. The RBDO has been adopted in the early design process to ensure the reliability of the pilot mining robot under various environmental uncertainties (Choi et al 2011;Park et al 2014;Cho et al 2016;Kim et al 2019b, a).…”

Concept of an advanced simulation-based design for engineering support of offshore plant equipment industries and its realization method

“…The integrated mining system is composed of mining robot, flexible and lifting risers, buffer, lifting pump and vessel as shown in Fig. 15 (Oh et al, 2014). In Korea, the government-based R&D project in mining technologies for deep-seabed manganese nodules have been carried out since 1994.…”

“…(Sohn and Shin, 1999;Lee and Kim, 2001;Altosole et al, 2009;Lee et al, 2010;Oh et al, 2014;Alessandri et al, 2015). In offshore plant industry, many advanced researchers are studying application methods of the simulation-based design, because simulation-based design has emerged as a key technology to reduce large budget, manpower and development period needing to develop huge offshore structures.…”

“…A simulation-based design using multi-body dynamics is a useful skill in otherwise impossible cases, which are verified by experiments. This technology is an excellent means of understanding qualitative optimization design, and avoids the process of test model production, which is costly and time-consuming (Oh et al, 2014).…”

Hydraulic Cylinder Design of Lifting Pump Mounting and Structural Safety Estimation of Mounting using Multi-body Dynamics

“…현재 상업채광용량 1/5 규모의 파일럿 채광로봇인 MineRo (Yeu et al, 2007;Choi et al,. 2009;Oh et al, 2014b) (Oh et al, 2014a (Haug, 1989).…”