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首页> 外文期刊>International Journal of Naval Architecture and Ocean Engineering >Experimental investigations on the failure modes of ring-stiffened cylinders under external hydrostatic pressure
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Experimental investigations on the failure modes of ring-stiffened cylinders under external hydrostatic pressure

机译：外部静水压力下加筋气缸失效模式的实验研究

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This paper reports on the experimental investigations on the failure modes of ring-stiffened cylinder models subjected to external hydrostatic pressure. Nine models were welded from general structural steel. The shells were initially formed by cold-rolling, and flat-bar ring frames were welded to the shell. The hydrostatic pressure tests were conducted by using water as the medium in pressure chambers. The details of the preparation and main test were briefly explained. The investigation identified the consequence of the structural failure modes, including: shell yielding, local shell buckling between ring stiffeners, overall buckling of the shell together with the stiffeners, and interactive buckling mode combining local and overall buckling. In addition, the ultimate strengths were predicted by using existing design codes. Non-linear numerical computations were also conducted by employing the actual imperfection coordinates. Finally, accuracy and reliability of the predictions of design formulae and numerical were substantiated with the test results.
机译：本文报道了在外部静水压力作用下的环形加劲缸模型失效模式的实验研究。九种模型是用普通结构钢焊接而成的。最初通过冷轧形成壳体，然后将扁钢环框架焊接到壳体上。静水压试验是通过在压力室内以水为介质进行的。简要说明了准备工作和主要测试的细节。调查确定了结构破坏模式的结果，包括：壳屈服，环形加劲肋之间的局部壳屈曲，壳体与加劲肋一起的整体屈曲以及结合局部屈曲和整体屈曲的交互式屈曲模式。此外，通过使用现有的设计规范来预测极限强度。还通过采用实际的缺陷坐标进行了非线性数值计算。最后，通过试验结果证实了设计公式和数值预测的准确性和可靠性。

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