The analysis on the dynamic response and acoustic radiation of bionic venation layout stiffened plate under impact load

摘要

Underwater explosion can generate the shock wave and the bubble pulse. For plate and shell structure itself, the shock wave may cause local plastic deformation or ship breaking, and the main protective structure of hull is stiffened plate. At present, more attention has been paid to study on the cross-stiffened plate structure. However, most people rarely think about the distribution of stiffener rib from the perspective of bionic. This article is inspired by the leaf venation growth from the nature. The growth pattern of the leaf venation is applied to the stiffener rib distribution of plate and shell structures. Moreover, the code is developed according to the venation growth criteria, and the venation distribution of stiffened plate can be acquired under the impact load. Further, the three-dimensional model of bionic venation stiffened plate and traditional cross-stiffened plate are established. Dynamic response and acoustic radiation of the bionic venation stiffened plate and the traditional cross-stiffened plate were also analyzed under the impact load.