Design and Strength Analysis of A Spherical Connector for Lifting Subsystem in Deep Sea Mining System

作     者：冯雅丽 张文明 冯福璋 

作者机构：School of Civil and Environmental Engineering University of Science and Technology Beijing 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2006年第20卷第4期

页      面：605-613页

核心收录：

学科分类：08[工学] 0824[工学-船舶与海洋工程] 

基　　金：This research was financially supported by China Ocean Mineral Resources R &D Association (Grant No. DY105-03-02-17) 

主　　题：pipe joint lifting pipe contact stress spherical joint buttress thread deep sea mining 

摘      要：A flexible connector of lifting pipes in a deep sea mining system is designed. The buttress thread （ based on API standard） is used and foreign experience in connector design is referred to. With this kind of connector, the lifting pipe wiU only bear the axial force, free of moment. The strength of the connector is analyzed in detail, including the connecting strength of the buttress thread, the dynamic load of the pipe system, pressures inside and outside of the pipe, the lateral stress of the pipe wall and so on. Especially, a geometric model is built for 3-D contact stress analysis. The distribution graph of contact stress is presented. It is indicated that the strength of the spherical connector meets the demand.