Damage modes of stiffened plates subjected to underwater explosion load
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摘要: 利用有限元软件MSC.Dytran研究了不同药量和爆距水下爆炸载荷作用下加筋板结构的毁伤模式,并进行了实验验证。研究了不同参数对毁伤模式的影响,并分析了不同毁伤模式之间的临界载荷值及判别条件。从毁伤模式的角度提出了接触爆炸与非接触爆炸的判别条件。
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关键词:
- 爆炸力学 /
- 毁伤模式 /
- MSC.Dytran /
- 加筋板 /
- 水下爆炸
Abstract: The commerical finite element software MSC.Dytran was used to numerically investigate the damage modes of stiffened plates under underwater explosion loads in the case of the different charge quantities and stand-off distances. Some experiments were conducted to confirm the numerical results. The factors which affected the damage mode of stiffened plates were analyzed. On the basis of the analyzed results the critical loads were proposed to distinguish the different damage mode. At the same time the criterion between the contact explosion and the noncontact explosion was put forward from the damage modes of stiffened plates.-
Key words:
- mechanics of explosion /
- damage mode /
- MSC.Dytran /
- stiffened plates /
- underwater explosion
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