破冰冲击载荷下船体振动响应分析  

Analysis of hull vibration response under ice breaking impact load

作　　者：徐义刚[1] 高处 顾向彦 吴刚[1] 苏楠[1] 王燕舞[1] XU Yigang;GAO Chu;GU Xiangyan;WU Gang;SU Nan;WANG Yanwu(Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011

出　　处：《舰船科学技术》2024年第13期9-13,共5页Ship Science and Technology

摘　　要：为考察破冰船船体在破冰冲击载荷下的振动响应特征,利用环向裂纹法对“雪龙2”号破冰船在典型破冰工况下的破冰冲击载荷进行预报,并通过傅里叶变换把破冰冲击载荷转换为频域载荷,进一步建立了“雪龙2”号破冰船全船有限元模型,进行破冰冲击载荷下全船振动响应计算分析。结果表明,破冰工况下,破冰冲击载荷对船体结构低频振动响应(5 Hz以下)贡献很大,容易引起船体梁振动、雷达桅结构振动等,对船体板格、加强筋、板架等船体结构的局部振动水平贡献相对较小。In order to investigate the vibration response characteristics of the Icebreaker hull structure under the ice breaking impact load,the circumferential crack method was applied to predict the ice breaking impact load of the"Xuelong 2"Icebreaker under typical ice breaking conditions.The ice breaking impact load was converted into frequency domain load through Fourier transform.Furthermore,the global structural finite element model of the"Xuelong 2"Icebreaker was established to calculate and analyze the hull structure vibration response under the ice breaking impact load.The results indicate that under ice breaking conditions,the ice breaking impact load contributes significantly to the low-frequency vibration response of the hull structure(below 5 Hz),which is prone to causing vibration of the hull girder and radar mast structure,and comparatively has small contribution to local vibration levels of hull structures such as plate,stiffener,and grillage.

关 键 词：破冰船 船体振动 冲击振动 冰载荷 

分 类 号：U674.21[交通运输工程—船舶及航道工程]