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首页> 外文期刊>Ships and offshore structures >Scaled model tests for the post-ultimate strength collapse behaviour of a ship's hull girder under whipping loads
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Scaled model tests for the post-ultimate strength collapse behaviour of a ship's hull girder under whipping loads

机译：鞭打载荷作用下船体梁的极限强度倒塌行为的比例模型测试

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A series of experimental investigations on the post-ultimate strength collapse behaviour of a ship's hull girder under whipping loads are presented. It is a follow-up study of the authors based on numerical simulations. One of the important conclusions of the previous work is that given the same magnitude of the loads, the collapse extent is smaller for the loads with the shorter duration. For the validation, a scale model with a scale ratio 1/100, which follows a law of similitude in the ultimate bending strength as well as geometry is employed in tank tests. The whipping loads are produced by dropping a mass object. The time history of the whipping loads is pre-adjusted by tuning the object mass, cushion material and dropping height. The hull girder bending moment with a time duration ranging 0.5-1.5 s in real scale, however, with the same magnitude, is applied to the hull girder. It was observed that the collapse extent was smaller for the loads with the shorter duration.
机译：提出了一系列关于鞭打载荷作用下船体梁极限强度倒塌行为的实验研究。这是作者基于数值模拟的后续研究。先前工作的重要结论之一是，在荷载大小相同的情况下，持续时间较短的荷载的坍塌程度较小。为了进行验证，在储罐测试中使用比例比为1/100的比例模型，该比例模型遵循极限弯曲强度以及几何形状的相似律。鞭打载荷是通过使重物掉落而产生的。搅动载荷的时间历史是通过调整物体的质量，缓冲材料和下落高度来预先调整的。持续时间为0.5-1.5 s的真实大小的船体梁弯矩，以相同的幅度施加到船体梁上。观察到，对于持续时间较短的载荷，坍塌程度较小。

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