摘要
船舶的砰击问题是一个包含动边界、结构-空气-水三者耦合的非线性、非定常问题,一直是船舶领域研究的前沿热点.新船型高速三体船的砰击问题与常规单体船不同,除了主船体底部砰击外还包括连接桥砰击,这使高速三体船的砰击问题更为复杂.文中利用LS-DYNA仿真软件建立高速三体船结构二维有限元模型,计算其入水过程中连接桥的砰击问题.计算中考虑高速三体船的空气层、结构质量、连接桥宽度和主船体的舭升高角度因素对连接桥砰击压力峰值影响.通过分析,得出各个因素对高速三体船连接桥砰击压力峰值的影响规律.
Ship slamming is a nonlinear unsteady problem in which dynamic boundary and structure,air,water coupling should be considered.It is a key issue in the ship researching field.Unlike ordinary monohull,trimaran slamming includes not only main hull bottom slamming,but also slamming of trimaran cross structure,which makes trimaran slamming more complicated.By using simulation software LS-DYNA, a 2D finite element model is built up and the slamming of trimaran cross structure is studied in the paper.In the study,many factors affecting the slamming pressure peak value of trimaran cross structure are considered.These factors are air cushion,structure mass,width of cross structure and degree of main hull deadrise.Obtained are the rules how these factors affect slamming pressure peak value.
出处
《武汉理工大学学报（交通科学与工程版）》
2008年第1期5-8,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家863计划项目资助(批准号:2006AA11Z227)
关键词
高速三体船
连接桥
砰击
空气层
结构质量
连接桥宽度
舭升高角度
trimaran
cross structure
slamming
air cushion
structure mass
width of cross structure
degree of deadrise
