一种用于SWATH湿甲板动响应分析的砰击载荷实用计算方法

A Practical Method for Calculating Wet-deck Slamming Loads of SWATH Aiming at Dynamic Response Analysis

利用连接桥模型试验,通过对几种砰击载荷计算方法的比较,提出用抛物线型函数对砰击压力进行二元非线性回归,与试验值吻合较好,得到了一种用于SWATH湿甲板动响应分析的砰击载荷时历载荷形式.给出一条船的算例,分析了湿甲板砰击的特点,得到航速、有义波高、遭遇频率、湿甲板高度都是影响砰击发生及其量值的因素的结论,指出在分析湿甲板砰击强度时必须采用动响应分析法.

By the model test of cross structure,the slamming load aiming at dynamic response analysis is estimated with parabolic nonlinear regression function by comparing with other calculation methods.It shows good agreement with test results.Finally the example of ship is shown,and the analysis of the characteristic of wet-deck slamming is performed.The conclusion indicates that speed,significance wave height,encounter frequency and wet deck height are the factors related to slamming loads.It also indicates that when analyzing the wet-deck slamming strength it should apply the method of dynamic response analysis.Useful suggestions were provided for ship design.