基于ABAQUS软件的舰船水下爆炸研究

  目的  水下非接触爆炸冲击能引起船体强烈的总纵弯曲运动，威胁船体总纵强度。采用详细的有限元建模进行水下非接触爆炸计算虽然可以获得船体爆炸弯矩，进而计算船体水下非接触爆炸作用下的船体总纵强度，但该方法工作量较大且较为复杂。为此，  方法  提出一种基于梁模型的船体水下非接触爆炸弯矩简化计算方法，运用ABAQUS有限元软件，建立船体详细有限元模型和船体梁简化模型，并分别进行水下非接触爆炸工况下危险剖面的爆炸弯矩计算。  结果  计算结果表明，建立的船体梁简化模型不仅建模简单，而且爆炸弯矩计算精度良好。  结论  所得结果可为水下非接触爆炸下船体爆炸弯矩的快速估算提供参考。

Research on warship underwater explosion with ABAQUS software

Non-contact underwater explosion can generate violent movement on hull girders, which may cause longitudinal strength problems. The explosion bending moment can be calculated using a detailed finite element ship model, but this costs considerable working time. This paper advances a new method for calculating explosion bending moment by a hull girder model. The explosion bending moment of typical ship sections is calculated according to a detailed ship model and simplified hull girder model using ABAQUS software. Comparisons between the results indicate that the simplified hull girder model is easily created and has good precision, enabling it to provide a reference for the estimation of explosion bending moment in hull girders subjected to non-contact underwater explosion.