摘要
针对某自卸运砂船在航行过程中出现的上层建筑强烈振动问题,基于MSC.Patran软件建立全船三维有限元模型,采用Nastran分析船体振动特性,以螺旋桨脉动压力为激励力,采用频率响应分析法得到满载出港和压载到港2种工况下的船体受迫振动响应值,找出上层建筑强烈振动的原因,提出增强结构的改善措施。
Aiming at the strong vibration of the superstructure of a self-discharging sand carrier in the voyage condition,a3 D FE model of the whole ship was established in MSC. Patran to carry out modal analysis by Nastran. In order to find out the reason of strong vibration in the superstructure,the frequency response was analyzed under two loading conditions of full-load departure and ballast arrival,so as to get the forced vibration response of hull structure subjected to propeller pulsating pressure.Based on the above analysis,the improvement measures of the hull structure were put forward.
作者
宋宇
樊红
邹郁筱
丁许聪
SONG Yu;FAN Hong;ZOU Yu-xiao;DING Xu-cong(School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,Chin)
出处
《船海工程》
北大核心
2018年第4期60-63,67,共5页
Ship & Ocean Engineering
基金
国家自然科学基金(51479154)
关键词
自卸运砂船
模态
振动响应
有限元法
频率响应
激振力
self discharging sand carrier
modal
vibration response
FEM
frequency response
exciting force
