深海采矿扬矿管非线性变形分析

Nonlinear Deformation Analysis of Lifting Pipe of Deep Seabed Mining

深海采矿系统扬矿管道不仅承担了运输矿石的功能,而且承受了整个系统大部分的重力,并且还受到海水绕流阻力、管道内外的压力、以及波浪引起的动载荷的综合作用,其变形及应力情况都很复杂,给系统的正常工作带来隐患。综合运用力学知识,运用有限元的思想,将整个管道离散化,使用迭代法编程求解出了每一部分的变形,并绘制出多种情况下的变形曲线。通过对扬矿管的非线性变形分析,得出了采矿船相对洋流的速度将是影响扬矿管变形的决定性因素的结论,对扬矿管的设计及强度校核具有较高的参考价值。

Lifting pipe of deep seabed mining not only undertake the function of minerals conveying,but also endure the weights of systerm.It endures wave force,ocean current force,seawater,pressure,wave dynamic lodot.The deformation and stress are very comolex and possiblly bring hidden trouble to the system.This article use the mechanics and limited finite element idea to disperse the whole pipe.The distortion curve is drawn in various circumstance by the iteration programming.By analyzing the nonlinear distortion on lifting pipe,the conclusion that the remining ship＇s rclocity opposite the ocean flow is the crucial factor affecting the lifting pipe of deep seaded mining pipe distortion is drawn,which has a higher reference value to the design of lifting pipe and intensity checking.