During hull construction, solar radiation in summer is one of the major factors hindering productivity because it induces unnecessary correction work due to the excessive out-of-plane distortion on the decks exposed to the Sun. Therefore, it is crucial to establish rational criteria for correction works in consideration of the transitional behavior of out-of-plane distortion by solar radiation. The purpose of this study is to establish a methodology for predicting solar radiation-induced distortion on the upper decks. For this goal, firstly the temperature distribution on the upper decks caused by solar radiation was evaluated through heat transfer FE analysis and measurement. And then, the solar radiation-induced distortion was predicted using non-linear bucking FE analysis and its validity was checked by a comparison with the measured results in the actual deck. In addition, a predictive method of welding distortion excluding the solar radiation effect from the measured solar radiation-induced distortion was proposed using the developed prediction techniques and verified in comparison with the measured results. Based on the results, it was possible to make the appropriate decisions about the correction work of upper decks irrespective of the hull quality inspection time in summer.

中文翻译：

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船体结构上甲板太阳辐射面外焊接变形过渡行为预测

在船体建造过程中，夏季的太阳辐射是阻碍生产力的主要因素之一，因为它会由于暴露在太阳下的甲板过度的平面外变形而引起不必要的校正工作。因此，考虑到太阳辐射面外畸变的过渡行为，为校正工作建立合理的标准至关重要。本研究的目的是建立一种预测上层甲板上太阳辐射引起的变形的方法。为此，首先通过传热有限元分析和测量来评估由太阳辐射引起的上层甲板的温度分布。然后，使用非线性屈曲有限元分析预测太阳辐射引起的变形，并通过与实际甲板中的测量结果进行比较来检查其有效性。此外，利用所开发的预测技术提出了一种排除太阳辐射影响的焊接变形预测方法，并与实测结果进行了比较验证。根据结果​​，可以对上层甲板的校正工作做出适当的决定，而无需考虑夏季的船体质量检查时间。使用开发的预测技术提出了一种从测量的太阳辐射引起的变形中排除太阳辐射影响的焊接变形预测方法，并与测量结果进行了比较验证。根据结果​​，可以对上层甲板的校正工作做出适当的决定，而无需考虑夏季的船体质量检查时间。使用开发的预测技术提出了一种从测量的太阳辐射引起的变形中排除太阳辐射影响的焊接变形预测方法，并与测量结果进行了比较验证。根据结果​​，可以对上层甲板的校正工作做出适当的决定，而无需考虑夏季的船体质量检查时间。