大型舰船总振动固有频率近似计算研究

摘要

基于我国舰船的设计规律，提出了一种精确计算大型舰船总振动固有频率所需初始数据的虚拟设计方法。以某舰船为原型，设计出177～200 m船长范围内系列虚拟船型主尺度及船体等值梁数据。计算出系列舰船虚拟船型船体的总振动固有频率值，扩展了船体总振动固有频率近似公式中统计系数的统计样本范围，利用扩展的统计样本数据提出了适合估算大型舰船船体总振动固有频率的经验公式。%Based on the design rule of our country ships, a virtual design method for the initial data of a precise calcula-tion of the hull vibration natural frequency of large ships is proposed.By using the prototype of the ship, a series of virtual ships within the legth of 165 m to 200 m is designed, then, the principal dimensions and the hull equivalent beam date are calculated for the hull vibration natural frequency. these data extends the statistical smaple range, which is ued to calculate the statistical coefficient in the hull vibration natural frequency approximation formula. According to these data, the experi-ential formula in order to etsimate lagre ships’ vibration natural frequency is proposed.