【摘要】 以某一舰船模型为对象,论述了有限元模型的建立、附连水质量及边界条件的处理等问题;计算了整个船舶的模态,通过模态试验验证了有限元模型的可靠性;分析了水下爆炸冲击波作用下船体结构和浮筏系统的冲击响应;模拟计算得出了浮筏系统参数对响应的影响规律。并将浮筏隔振系统和船体作为一体,研究整个船舶结构的冲击响应,所得到的结果对于研究浮筏系统的抗冲击设计具有参考价值。更多还原

【Abstract】 Some problems about establishment of the ship FEA model, the method of dealing with the lumped mass and the boundary conditions are discussed for a naval ship model. The vibration modes of the ship were calculated, and the shock response of the whole ship was considered. The validity of finite element model was verified by the result from modal test. Then the response of the hull with floating raft system was analyzed when the bottom of hull was exerted by a vertical shock wave from an underwater explosion. The shock response of the floating raft system was gained through the calculation. The floating raft system and hull are considered as a whole to study the shock response of the whole ship. It is practical to study the shock resistence property of the floating raft system.更多还原