基于有限元和虚拟样机技术的螺纹与球铰连接扬矿管整体水平运动  

Lateral movement of lifting strings connected by screwed joints and spherical joints in deep sea by finite element analysis and virtual prototype technology

作　　者：冯福璋[1] 冯雅丽[1] 张文明[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《北京科技大学学报》2006年第12期1152-1156,共5页Journal of University of Science and Technology Beijing

基　　金：国家长远发展专项资助项目(No.DY105-03-02-17)

摘　　要：为了研究螺纹与球铰连接两种情况下的扬矿管系统的整体水平运动,建立了螺纹连接和球铰连接扬矿管系统的几何模型,分析了系统的受力和约束情况,并分别用有限元和虚拟样机技术进行了4级海况时瞬时动态分析和动力学分析.结果表明:螺纹连接扬矿管系统的最大横向偏移量较小,但是管体承受很大的弯矩;在球铰连接的系统中偏移量为6m左右,管体不受弯矩,相当于柔性管,接头应选用耐磨性较好的材料.To study the lateral movement of pipe strings connected by screwed joints and spherical joints in deep sea, this paper built the models of the pipe strings and made comparison of their horizontal displacements. Under the four-level oceanic condition, the transiently dynamic and kinetic analyses of the pipe strings were carried out by finite element method and virtual prototype technology. The results show that the maximum lateral displacement of pipe strings connected by screwed joints is 2.1 m, and the maximum moment in this system is 8 400 N· m. While the maximum lateral displacement of pipe strings connected by spherical joints is 6.0 m, the moment in this system is zero, and the pipe strings can be considered as flexible pipes which can bear large axial force. Since the lateral movement of buffer periodically changes with time and its period is much longer than that of the waves, materials with better wearability are more suitable for spherical joint-connected pipe strings.

关 键 词：大洋采矿 扬矿管 球铰 螺纹连接 液动力 横向偏移 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] TD807[天文地球—海洋科学]