改进V型夹层板近场水下爆炸抗冲击性能研究

对水下爆炸结构的响应进行分析,设计相应的结构来降低载荷效应是提高舰船抗冲击性能的重要研究内容。基于耦合欧拉-拉格朗日(CEL)算法,考虑流-固耦合等因素的影响,建立完整的水下爆炸数值模型,运用显式动态分析对普通加筋板、常规V型夹层板、改进的V型夹层板进行近场水下爆炸作用下的动响应分析,从结构与流体的相互作用、结构产生的变形、吸能特性等角度综合分析。结果表明,改进后的V型夹层板抗冲击防护性能明显提高,可为舰船抗冲击结构设计提供一定的参考。

Research on impact resistance of improved V-type sandwich panels in near-field underwater explosion

The important research content to improve ship's impact resistance is to analysis structural response of underwater explosion and design corresponding structure to reduce the load effect.Based on the coupled Euler-Lagrange(CEL)algorithm and considering the influence of fluid-solid coupling and other factors,the complete numerical model of underwater explosion has been established.Dynamic analysis was finished to obtain the response of ordinary stiffened panels,conventional V-type sandwich panels and improved V-type sandwich panels under near-field underwater explosion.The interaction between structure and fluid,the deformation of structure and the energy absorption characteristics are analyzed comprehensively.The results show that the improved V-type sandwich panels has better impact protection performance,which can provide some reference for the ship anti-impact structure design.