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近距非接触空爆载荷作用下固支方板破口计算

DOI: 10.3969/j.issn.1006-7043. 201111027

Keywords: 爆炸力学, 近距空爆, 固支方板, 能量原理, 破口计算

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Abstract:

为研究战斗部近炸下舰船结构的破口现象,结合模型试验,对固支大尺寸方板在近距空爆载荷下的变形及破裂情况进行了分析.基于刚塑性假设和能量密度准则提出了确定结构初始破孔大小的计算方法,利用能量守恒原理,建立了固支大尺寸方板在近距非接触空爆载荷下最终破口大小的理论计算模型,并对试验工况进行了计算.结果表明,理论计算得到的最终破口以及初始破孔大小均与试验结果吻合较好.工程上,可利用所建立的计算模型对舰船结构在近距非接触空爆载荷作用下的破口大小进行估算.

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