大型起重船在规则波中的频域响应分析  

Frequency domain response analysis of large crane ship in regular waves

作　　者：王文浩[1] 王跃齐 贾国强 周方[2] 冯泽奇 张晓磊 WANG Wen-hao;WANG Yue-qi;JIA Guo-qiang;ZHOU Fang;FENG Ze-qi;ZHANG Xiao-lei(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Jiangsu Academy of Safety Science and Technology,Nanjing,210042,China;Nanjing Yangzi State-owned Investment Group Co.,Ltd.,Nanjing,210000,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]江苏省安全生产科学研究院,江苏南京210042 [3]南京扬子国资投资集团有限责任公司,江苏南京210000

出　　处：《舰船科学技术》2022年第22期36-42,共7页Ship Science and Technology

基　　金：太原科技大学博士科研启动基金资助项目(20182029);太原科技大学研究生优秀创新项目(XCX212053);江苏省产业前瞻与关键核心技术项目(BE2021085)。

摘　　要：本文基于势流理论和波浪的辐射/绕射理论,以3600t起重船作为研究对象,利用水动力分析软件Aqwa研究了波浪载荷对起重船的频域响应特性,计算了不同海底深度下起重船作业时的附加质量和辐射阻尼,以及当遭遇横向海流载荷危险工况时,不同航速对起重船动态响应的影响。结果表明:在低频区域内,起重船的附加质量和辐射阻尼随着水深的增大而减小,而高频区域内几乎不受海水深度的影响。当起重船遭受横向波浪冲击时,航速也对其本身的动态稳定性略有影响,且频率介于0.75~1.0 rad/s之间处于危险作业范围,通过上述动态响应等分析,为起重船作业时的波浪载荷预报提供可靠的理论依据。Based on the potential flow theory and wave radiation/diffraction theory,this paper takes a3600t crane ship as the research object,and uses the hydrodynamic analysis software Aqwa to study the frequency domain response characteristics of wave loads to the crane ship.The additional mass and radiation damping of the crane ship in operation,and the influence of different speed on the dynamic response of the crane ship when encountering the dangerous condition of lateral current load.The results show that in the low frequency region,the additional mass and radiation damping of the crane ship decrease with the increase of the water depth,while in the high frequency region it is hardly affected by the sea water depth.When the crane ship is impacted by lateral waves,the speed also has a slight impact on its own dynamic stability,and the frequency is between 0.75 rad/s and 1.0 rad/s in the dangerous operating range.It provides a reliable theoretical basis for the wave load forecast during crane ship operation.

关 键 词：势流理论 起重船 附加质量 辐射阻尼 

分 类 号：U674.35[交通运输工程—船舶及航道工程]