频时域混合法求多浮体系统的不规则波运动响应

介绍了一种用于预报多浮体结构在波浪中的运动响应的频、时域混合法。根据确定不规则波的跨零经，用频域法求解浮体的水动力系数，并适时求解非线性描力等外力，方程求解时引入动力有限元中的增量平衡方程，利用本方法预报了由６个单体组成的中空浮动结构对波浪的运动响应，并与试验结果进行了比较，数值结果与试验数据具有较好的吻合程度。

Motion Responses of Multi-body Floating System to Irregular Waves

A method called hybrid frequency domain and time domain method is introduced to predict the motion responses of multi body floating structure to waves. The zero crossing frequencies are obtained, when the irregular waves are considered as summation of regular waves. Then frequency domain method is used to obtain the hydrodynamic coefficients, but the nonlinear mooring forces and other disturbing forces are obtained in time domain. The moving balance equations are used to solve the motion equations. The motion responses of a hollow structure composed of six bodies are predicted with the method. The comparison of the solutions with experimental results has shown good agreement.