水下爆炸载荷作用下加筋板的毁伤模式

Failure modes of stiffened plates subjected to underwater explosion

1.
Department of Naval Architecture & Ocean Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China

摘要: 为研究加筋板结构在水下爆炸载荷作用下的破坏模式，进行了一系列模型试验。通过对试验结果的分析，将加筋板的毁伤模式总体分为塑性大变形（模式I）、拉伸破坏（模式II）和剪切破坏（模式III）等3大类。又根据载荷强弱和加强筋的相对强度，将每种破坏模式细分为3种子模式。提出了一个量纲一的损伤因子，作为预报毁伤模式的判据。
- 爆炸力学 /
- 毁伤模式 /
- 水下爆炸 /
- 加筋板 /
- 损伤因子
Abstract: A series of model experiments were conducted to explore the failure modes of stiffened plates subjected to underwater explosion. By analyzing the experimental results, three failure modes were established such as Mode I(large plastic deformation),Mode II(tensile failure) and Mode III(shear failure). According to the difference of the load and stiffeners, every failure mode was divided into three sub-modes. And a dimensionless damage factor was proposed to be used as a criterion for predicting the failure modes.
- mechanics of explosion /
- failure mode /
- underwater explosion /
- stiffened plate /
- damage factor