深海采矿中试铰接式扬矿系统的横向运动研究

he traditional lifting pipes commonly used threaded connections, vulnerable to the stress concentration and bending stress. To avoid this failure behavior, spherical joint was used to connect lifting pipes to replace screwed connection in lifting pipes of deep-sea mining system. Based on Dynamics of Flexible Multi-body systems, the mechanics model of articulated lifting system was established. Under the four-grade and six-grade oceanic condition, dynamic responses of lifting system were simulated. The results show that articulated lifting system is better than fixed one on reducing moment of flexion clearly.