심해저 채광 시스템에서 빔 모델의 효율적인 해석을 위한 구역 분해 방법 연구

Abstract

Three different domain decomposition methods have been proposed for an efficient analysis of the beam model in a deep sea-bed mining system. A deep sea-bed mining system consists of a mining vessel, a carrier, a lifting pipe, a buffer, a flexible pipe, and a miner vehicle. In order to set up the control strategy of the remotely controlled miner vehicle on the sea-floor, and efficient analysis of the sea-bed mining system is necessary. For the efficient analysis, domain decomposition methods of the lifting pipe and a flexible pipe can be utilized. Three decomposition methods with stiff spring, constraint, and constraint elimination have been proposed. Efficiency and accuracy of the methods has been investigated using beam model which represents the lifting pipe system and a flexible pipe system of the sea-bed mining system. The numerical simulations show that the constraint elimination method is most efficient on among the proposed methods.exible pipe, and a miner vehicle. In order to set up the control strategy of the remotely controlled miner vehicle on the sea-floor, and efficient analysis of the sea-bed mining system is necessary. For the efficient analysis, domain decomposition methods of the lifting pipe and a flexible pipe can be utilized. Three decomposition methods with stiff spring, constraint, and constraint elimination have been proposed. Efficiency and accuracy of the methods has been investigated using beam model which represents the lifting pipe system and a flexible pipe system of the sea-bed mining system. The numerical simulations show that the constraint elimination method is most efficient on among the proposed methods.