为研究射流冲击载荷对结构的作用效果，从理论和数值角度研究了射流的载荷特性，以舱段模型实验为研究对象，建立了射流计算模型，结合实验数据，对射流冲击问题进行了分析。结果表明，射流冲击能够造成结构强烈的局部响应，某些情况下，射流冲击载荷引起的结构响应甚至比冲击波载荷引起的响应更大。因此，中近场水下爆炸实验需要考虑射流的影响。建立的射流模型能够较好地反映射流冲击的载荷特性，为水下爆炸实验分析提供了一种新的手段。%In order to study the damage effect of ship structure subjected to jet impacting, characteristic of jet loading was investigated theoretically and numerically. A jet impact-model was verified based on a ship cabin model underwater explosion test. An analysis was made by combining the calculation re suits and test data. Results show that the jet impact can induce a strong local response on the structure. Under certain circumstance,jet impacting response is more severe than that caused by shock wave even when bubble incepts at a relatively far position. Therefore,jet impact problem cannot be considered only in proximal underwater explosion test. The jet impact model developed in this work could reflect the loading feature accurately,and would provide reference to underwater explosion experimen tal analysis.
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