【摘要】 假设在波浪砰击的条件下,线性“切片理论”仍适用于预报舰船的纵向运动。于是,将不规则海浪上的船首外飘砰击载荷及其对主船体的响应,简化为首部船一波相对垂向运动响应谱峰值频率的某个规则波问题,即船体响应的概率与船一波相对垂向速度的平方相联系,从而获得在各种不同海况下,首外飘砰击船体响应的概率分布可以用w。儿Ull分布来近似,即“短期预报”。 计算中对各种非线性水动力载荷成分作了分析,认为首外飘砰击的船体响应应考虑非线性惯性力及非线性浮力这两项载荷。文中把某船实测结果与本方法的短期预报作了比较,最后评述了长期预报。更多还原

【Abstract】 Assuming that the linear "Strip Theory" is still applicable for the prediction of longitudinal motions of ships under condition of slamming, the loadings on bow flare in seas and the hull response to it are then simplified as a problem of regular waves with respect to the modal frequency in the response spectrum of bow-wave vertically related motion, and the probability of hull response is related to the sguare of bow-wave vertical relative velocity. It can be approximated by using Weibull distribution in order to obtain the probalnlty distribution of the hull response under bow flare slamming in various seas, i. e the "Short-Term Prediction".Various components of non-linear hydroclynamic loading are analysed in the calculation. It seems that both non-linear inertia forces and buoyant forces should be considered in the calculation of hull response to bow flare slamming. Full-scale measurements of a ship are compared with short-term predictions by this method and long-term predictions reviewed.更多还原