渤海湾冰载荷作用下LNG浮式转接驳结构响应分析  

Structural Response Analysis of LNG Floating Transfer Barge Under Ice Load in Bohai Bay

作　　者：常松亮 李楷[1] 夏华波[2] 吴昊[2] 王运龙[1] CHANG Song-liang;LI Kai;XIA Hua-bo;WU Hao;WANG Yun-long(School of Naval Architecture and Ocean Engineering,Dalian University of Technology,Dalian 116024,China;CNOOC Energy Technology&Service-Oil Production Services Company,Tianjin 300452,China)

机构地区：[1]大连理工大学船舶工程学院,大连116024 [2]中海油能源发展股份有限公司采油服务分公司,天津300452

出　　处：《武汉理工大学学报》2023年第9期83-90,共8页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51509033);中央高校基本科研业务费资助(DUT19JC51)。

摘　　要：为了分析渤海湾流冰冲击作用下LNG浮式转接驳的结构响应,提高转接驳的抗冰能力,建立非对称式LNG浮式转接驳和平整冰及碎冰有限元模型,基于任意拉格朗日-欧拉(ALE)算法对海冰冲击转接驳进行数值模拟。设置流冰以1 m/s的速度与转接驳成0°、45°、90°的6种碰撞场景,通过数值仿真,得到不同工况下转接驳的塑性应变、流冰的速度和加速度、碰撞力。结果表明:在平整冰作用下,0°、45°和90°工况转接驳片体前端均发生塑性形变,0°时结构损伤程度低于其他两种工况;在碎冰作用下,成45°和90°碰撞时转接驳发生一定的塑性形变,在0°时,结构未受到损伤。研究工作可为冬季渤海湾作业的LNG浮式转接驳结构设计提供一定参考。In order to analyze the structural response of LNG floating transfer barge under the impact of drift ice in the Bohai Bay,and improve the anti-ice ability of the transfer barge,the finite element model of asymmetric LNG floating transfer barge,leveling and ice breaking was established.Based on the arbitrary Lagrangian-Euler(ALE)algorithm,the sea ice impact transfer barge was numerically simulated.Set up six collision scenarios with the transfer barge at a speed of 1m/s at 0°,45°,and 90°.Through numerical simulation,obtain the plastic strain,velocity and acceleration of the flow ice,and collision force of the transfer barge under different working conditions.The results show that under the action of flat ice,plastic deformation occurs at the front end of the transfer barge body at 0°,45°,and 90°operating conditions,and the degree of structural damage at 0°is lower than the other two operating conditions;Under the action of crushed ice,the transfer barge undergoes certain plastic deformation when colliding at 45°and 90°,and the structure is not damaged at 0°.The work of this paper can provide some reference for the structural design of LNG floating transfer barge for winter operation in Bohai Bay.

关 键 词：平整冰 碎冰 浮式转接驳 ALE 

分 类 号：U674.2[交通运输工程—船舶及航道工程]