弹性船体波激响应时域过程的数值模拟

本文从入射波的波浪现实出发，用非线性水弹性积分─微分法进行船体运动和结构动响应的时间历程模拟，直接将试验测量结果与理论计算在时域内作比较，这有利于揭示砰击和上浪等非线性瞬态作用导致冲荡响应的力学机理。这种模拟及其验证方法避免了对理论和试验结果的统计特性进行比较时，因子样长度的限制和数据处理过程所带来的不确定性，比峰值比较更能说明波激响应数学模型的精确性和可靠性。

TIME DOMAIN NUMERICAL SIMULATION OF WAVE-INDUCED RESPONSES OF ELASTIC SHIPS

This paper shows a validation of the nonlinear hydroelastic integral-differential method and its application to the investigation of ship motions and dynamic structural responses induced by wave and slamming. The numerical simulation is performed based on the time history of incident waves measured in the experiment, so that the calculational result can be verified directly in the time domain. The time domain modelling also reveals the mechanism of the whipping responses induced by transient excitations such as slamming and green water. The numerical prediction shows good agreement with the experimental result of an elastic ship model test.