爆炸载荷下舱板与加强筋抗爆性能分析

以救生舱壳体的抗爆性能为研究对象，通过控制变量法，分别研究了壳体中舱板与加强筋两部分的抗爆性能。通过有限元分析软件 LS-DYNA，对舱板厚度一定，加强筋厚度不同和加强筋厚度一定，舱板厚度不同两种组合进行数值仿真计算，得出了整体救生舱壳体的塑性变形与舱板和加强筋厚度之间的关系曲线。研究结论表明：在一定载荷范围内，加强筋在厚度与整体壳体塑性变形上成双段线性曲线规律；舱板在厚度与整体壳体塑性变形上成抛物线曲线规律。研究成果为救生舱舱板与加强筋厚度设计提供有益借鉴。

Antiknock Performance Analysis of Tank Plate and Stiffener Under Explosion Loading

With the capsule shell antiknock performance as the research object,two parts of the capsule shell,plate and stiffener,whose antiknock performance were researched through the control variable meth-od.Through finite element analysis software LS-DYAN,two kinds of operating condition,that the thick-ness of the stiffener is different with a certain thickness of plate and that the thickness of the plate is differ-ent with a certain thickness of stiffener,were under numerical simulation calculation,which discovered the relationship between the plastic deformation of the whole capsule shell and the thickness of the plate and the stiffener.The result show that,within a certain range of load,the plastic deformation of the overall shell and the thickness of stiffener forms into double linear curve law;the plastic deformation of the overall shell and the thickness of plate forms into a parabolic curve.This research provides beneficial reference for the thickness design of capsule plate and stiffener.