基于切片理论的波浪载荷直接计算

Direct Calculation of Wave Loads Based on Strip Theory

提出了波浪载荷直接计算方法。该方法基于线性切片理论,在频域范围内进行。通过水动力分析得出波浪载荷的响应幅值算子,采用统计方法对波浪载荷进行长期预报,并将线性波浪载荷预报结果进行非线性修正,以模拟实际波浪载荷的非线性效应。最后以某一船型为例,结合IACS推荐的波浪谱和波浪散布图以及超越概率,采用该方法进行了计算并将计算结果与规范值进行了比较。

Direct calculation of wave loads through hydrodynamic analysis is presented in this paper. The calculation is based on strip theory and canned out in frequency domain. Response amplitude operators are obtained through hydrodynamic analysis and statistical method is employed to predict the long term wave loads. The linear wave loads obtained from long term prediction are corrected to account for non-linear effect. A case study, which is incorporated with the wave spectrum, wave scatter diagram and probability of exceedance associated to IACS recommendation, is given and the results from direct calculations are compared with those from rule calculations.