期刊论文

Mechanical analysis of buffer retrieve/deployment operations considering internal solitary waves

中文

中国有色金属学报

1004-0609

2021

31

10

2836-2847

10.11817/j.ysxb.1004.0609.2021-37988

国家重点研发计划资助项目（2016YFC0304103-02）～～；

本校为第一机构

海洋内波对中间仓海上收放作业的安全带来了极大挑战。基于有限元方法建立了内波和海流联合作用下中间仓单体收放过程的有限元分析模型,并采用Newmark法对模型进行了数值求解,分析了中间仓收放过程中的冲击响应以及管柱形态、张力、等效应力、上部转角和月池处偏移等因素。结果表明:在各项因素中,顶部张力受内波影响小,等效应力、上部转角和月池处偏移受内波影响大;收放作业过程中硬管等效应力最大位置发生于悬挂点附近;上部转角和月池处偏移是影响作业安全的限制因素,内波上层流方向与海流同向工况是实施收放作业的危险工况,中间仓入水0~300 m深度是收放过程的危险深度区域。

The marine internal waves have brought great challenges to the safety of deep-sea mining buffer retrieve/deployment operations.Based on the finite element method,a finite element model of the buffer retrieve/deployment operations under the combined action of internal waves and currents was established,and the Newmark method was used to solve the model.The transient response and factors,such as string shape,tension,equivalent stress,upper rotation and offset,at the moon pool position in the retrieve/deployment process of the buffer were analyzed.The results show that,among the factors,the equiv...