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气浮结构的频率响应特性分析

发表时间:2014-07-31  浏览量:1511  下载量:601
全部作者: 刘宪庆,别明娟
作者单位: 后勤工程学院军事工程管理系;后勤工程学院后勤工程检测中心
摘 要: 以截面为矩形的气浮结构为研究对象,基于三维势流理论通过MOSES软件对不同分舱、不同吃水、不同水深下结构的频率响应特性进行研究分析。分析结果表明:分舱、吃水的变化对气浮结构的纵荡幅值响应算子(response amplitude operator,RAO)影响不明显,分舱增加及吃水降低,气浮结构的垂荡和纵摇出现最大幅值的频率增大;当扰动频率大于某一值时,水深对于气浮结构幅值响应的影响可以忽略;而当扰动频率小于某一值时,由于浅水效应,纵荡漂移幅值随着水深减小增大的幅度远大于垂荡和纵摇。
关 键 词: 海洋工程;气浮结构;MOSES;幅值响应算子;吃水;水深
Title: Analysis of frequency response characteristics for air float structure
Author: LIU Xianqing, BIE Mingjuan
Organization: Department of Engineering Management, Logistcal Engineering University of PLA; Logistics Engineering Testing Center, Logistical Engineering University of PLA
Abstract: In this paper, based on three dimensional potential flow theory and MOSES software, the frequency response characteristics of air float structure in different subdivisions,different drafts and different water depths are analyzed taking rectangular type air float structure as an example. Analysis results show that the effects of the change of subdivision and draft on the response amplitude operator (RAO) of surge for air float structure are not obvious. With the subdivision increasing and draft decreasing, the maximum amplitude frequency of heave and pitch for air float structure increases. When the disturbance frequency is greater than a certain value, the effect of water depth to RAO can be neglected.When the disturbance frequency is less than a certain value,the increase of surge is far greater than heave and pitch as the water depth decreases because of the shallow water effect.
Key words: ocean engineering; air floating structure; MOSES; response amplitude operator; draft; water depth
发表期数: 2014年7月第14期
引用格式: 刘宪庆,别明娟. 气浮结构的频率响应特性分析[J]. 中国科技论文在线精品论文,2014,7(14):1440-1447.
 
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