摘要
针对SWATH在波浪中航行时,其湿甲板底部易遭受砰击从而引起船体振动的现象,对SWATH的砰击动态响应和强度进行了研究。利用SWATH在规则波中船波相对运动推导了随空间和时间变化的砰击载荷,采用有限元数值仿真,计算了SWATH湿甲板受砰击载荷作用的动态响应,分析了其位移和应力分布规律;并与静强度法砰击响应进行了比较,对湿甲板强度设计方法进行了探讨,为船舶结构设计提供参考。
Aiming at analysing ship vibration induced by wet-deck bottom slamming when it is sailing on waves,the dynamic response of SWATH under slamming load was discussed.Slamming load that varies with space and time was derived by making use of the relative motion between ship and waves,and the dynamic response was then calculated.The distribution of deformation and stress was analyzed for inspecting the characteristics of load impacting the structure.Comparing with the static slamming response,an effective strength design criterion of wet-deck was proposed,which can be used as reference in the structure design of SWATH.
出处
《振动与冲击》
EI
CSCD
北大核心
2011年第6期208-212,共5页
Journal of Vibration and Shock
基金
十一五预研项目资助
