Abstract A novel virtual hull monitoring approach is assessed using full-scale measurements from a naval vessel trial to address two questions. First: Can this technique accurately reproduce stress spectra from measured strains? Second: Are responses calculated using reconstructed two-dimensional wave spectra from hindcast data more accurate than those using simpler wave representations? Stresses calculated using wave hindcast data, ship track information, and stress transfer functions compare favorably to those derived from strain gauge measurements at five structural locations. Wave conditions are represented using a spectrum model along with bulk spectral parameters (significant wave height, peak period, and primary direction) from hindcast datasets and by reconstructing two-dimensional spectra from hindcast partition data. Both approaches give good agreement with strain measurements but using the more-detailed reconstructed two-dimensional wave spectra yields better results. Results suggest that wave hindcast data are sufficient for accurate structural calculations, encouraging further study of virtual hull monitoring using wave hindcast data.

中文翻译：

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使用后报数据和重建的二维波谱对海军舰艇进行虚拟船体监测

摘要 使用来自海军舰船试验的全尺寸测量来评估一种新颖的虚拟船体监测方法，以解决两个问题。第一：这种技术能否从测量的应变中准确地再现应力谱？第二：使用来自后报数据的重建二维波谱计算的响应是否比使用更简单的波表示的响应更准确？使用波浪后报数据、船舶航迹信息和应力传递函数计算的应力与从五个结构位置的应变计测量得出的应力相比具有优势。波浪条件使用频谱模型以及来自后报数据集的体谱参数（显着波高、峰值周期和主要方向）以及通过从后报分区数据重建二维谱来表示。两种方法都与应变测量非常吻合，但使用更详细的重建二维波谱会产生更好的结果。结果表明，波浪后报数据足以进行精确的结构计算，鼓励进一步研究使用波浪后报数据进行虚拟船体监测。