摘要
为分析上海海事大学教学实习船全船振动和局部振动特性,采用经验公式法和有限元三维建模的方法,对两种典型工况下该船整船及其上层建筑的振动模态进行计算.计算结果表明,该船整船的自由振动性能良好,上层建筑部分一阶频率接近危险共振范围.根据计算结果,对上层建筑的结构和后续研究提出建议.该研究表明,经验公式法与有限元法的结合使用可以简化计算模型.
In order to analyze the global and local vibration characteristics for training ship of Shanghai Maritime University, the empirical formula method and finite element 3D modeling method are adopted to calculate vibration modal of the whole and superstructure of the ship in two kinds of typical cases. The resuits of these calculation shows that free vibration characteristic of the hull is good and the first-order frequency of superstructure part is close to the dangerous range of vibration. Based on the results, some recommendations are given for the superstructure design and future research. The study shows that the calculation model can be simplified by combining empirical formula method with finite element method.
出处
《上海海事大学学报》
北大核心
2013年第2期23-29,共7页
Journal of Shanghai Maritime University
基金
上海高校选拔培养优秀青年教师科研专项基金(shhs12056)
关键词
教学实习船
全船振动
局部振动
有限元法
经验公式
training ship
ship vibration
local vibration
finite element method
empirical formula
