Page 82 - 《爆炸与冲击》2026年第2期

第 46 卷 郑晓波，等： 固支圆板在多次远场空爆载荷下位移响应的理论模型 第 2 期

(32)）。后一次加载引起的位移增量小于该加载可单独引起的位移，且这一增量大小与之前加载的累积
位移有关，之前加载的累积位移越大，则后一次加载引起的位移增量越小。
由于结构在爆炸载荷下动力学问题的复杂性，本文在得到理论模型的过程中应用了一些假设与简
化，因此理论结果与模拟结果存在一定误差。在实际应用中，本文理论方法可以作为对圆板在多次空爆
载荷下真实响应的估计，也可以通过理论解初步判断不同空爆组合方式毁伤效果的大小。另一方面，结
论 (2) 表明，在实际多次空爆情况下，如果前序爆炸已经对结构造成了一定毁伤，后序爆炸引起的毁伤增
益会减小，这意味着简单通过多次爆炸增加结构毁伤的作法可能是不高效的。

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