JZ20-2NW平台抗冰性能的有限元分析  

FEM ANALYSIS FOR ICE-INDUCE VIBRATION OF JZ20-2NW PLATFORM

作　　者：武文华[1] 于佰杰[1] 岳前进[1] 陈亮[2] 

机构地区：[1]大连理工大学,大连116085 [2]北京美盛沃利工程公司,北京100027

出　　处：《中国海洋平台》2007年第6期25-28,33,共5页China offshore Platform

基　　金：国家863计划课题(2001AA602015)

摘　　要：通过有限元软件LS-DYNA模拟了海冰与JZ20-2NW北高平台相互作用的动态断裂过程。模拟得到的海冰裂纹扩展情况与现场观测一致。基于数值结果可以确定海冰断裂长度,并获得了呈三角形脉冲形式的冰力时程曲线。模拟得到的动冰力峰值与Hirayama-Obara公式计算的静冰力结果相符。同时可以获得平台振动的位移和加速度的模拟结果。The dynamic fracture process of sea ice interacting with JZ20-2NW platform is performed on the basis of finite element software--LS-DYNA. The crack propagated processes which obtained in numerical results of sea ice are similar with that of obtained in situ observation. The break-length of sea ice and the triangle shaped ice force temporal curve can be determined from the simulated results. The peak force of sea ice in numerical results is consistent with static ice force formulation （Hirayama-Obara）. The displacements and accelerations in platform are also given in the paper.

关 键 词：JZ20—2NW北高平台 裂纹扩展 冰荷栽 冰激振动 有限元模拟 

分 类 号：P752[天文地球—海洋科学]