沉入式大直径圆筒结构倾覆转动点数值分析  

Numerical analysis on overturn center of embedded large diameter cylinder structure

作　　者：李飞[1] 

机构地区：[1]上海海事大学海洋环境与工程学院,上海200135

出　　处：《计算机辅助工程》2009年第1期51-55,65,共6页Computer Aided Engineering

摘　　要：针对各种关于沉入式大直径圆筒结构稳定性计算方法的基本假设、分析思路、参数取值和计算结果等存在较大差异的情况,通过ABAQUS模拟其在竖向载荷和水平载荷作用下的倾覆.该方法由位移变化寻找其倾覆转动点,分析其倾覆转动点随参数变化的规律.数值模拟结果与解析计算结果虽然存在约±20%的误差,但是数值解与解析解关于转动点位移随圆筒各参数变化的规律表现一致,有助于沉入式大直径圆筒结构的倾覆稳定性分析.For the bigger difference in the basic hypothesis, analytic methods, parameters, calculation results and so on about the structural stability of embedded large diameter cylinder, ABAQUS is used to simulate its overturn under vertical load and horizontal load. In the method, the overturn center is found by the displacement change, the change rule of overturn center with the change of parameters is analyzed. Although the error between the simulation result and the calculation result is about 20 percent,the numerical solution and the calculation solution show the same rule about the overturn center displacement change with the change of parameters. So it is helpful for the analysis on overturn stability of embedded large diameter cylinder structure.

关 键 词：沉入式大直径圆筒 倾覆转动点 有限元 ABAQUS 

分 类 号：U656.114[交通运输工程—港口、海岸及近海工程] TU432[交通运输工程—船舶与海洋工程]