The geometric shape of hull, sall body, deep-sea oil platforms pillars was close to cylinder, the influence of finite to added-mass was hard to consider if it was replaced by the added mass of infinite cylinder, and the added mode mass of vibration modes was not given. To solve the above problems, firstly, the added mass of finite rigid cylinder is calculated though the potential flow theory. Secondly, added mode mass of vibration modes is obtained by the strip theory. Thirdly, influence function method is put forward. It is convenient for the engineering applications.%船体、潜航体、深海石油平台的支柱等的几何外型都接近圆柱体,用无限长圆柱来代替难以计及有限长度对附加质量的影响,并无法得到振动模态的附加模态质量.探讨了:(1)从势流理论出发求得了有限长刚性圆柱的附加质量;(2)用切片法得到了振动模态的附加模态质量;(3)提出了影响函数方法,便于实际工程应用.
展开▼
