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为研究泡沫铝夹芯板在空中与水下爆炸条件下的消波吸能效应,建立空中与水下爆炸冲击有限宽泡沫铝夹芯板的全耦合模型,从爆炸冲击波的反射、透射、绕射及汇聚过程入手,对比分析爆炸冲击波在空气和水中的传播与衰减规律,探讨泡沫铝厚度对夹芯板消波效应的影响。结果表明,泡沫铝夹芯板对空中及水下爆炸均有较好的消波吸能效果;受冲击波绕射及板后汇聚影响,空气和水2种介质中的抗爆设防应以近距离为主;为增强消波效果及芯层的吸能效果,应优先选择芯层较厚的泡沫铝夹芯板。
In order to study the effect of wave-absorbing and absorbing energy of foam aluminum sandwich panel under air and underwater explosion conditions, a full coupling model of finite-width foam aluminum sandwich panel with air-to-underwater explosion impact is established. From the reflection, transmission and surrounding of blast shock wave Ray and convergence process, the propagation and attenuation of blast shock wave in air and water are analyzed and compared, and the effect of aluminum foam thickness on the wave-damping effect of the sandwich panel is discussed. The results show that foam aluminum sandwich panel has good effect of wave absorbing and absorbing energy on both air and underwater explosion. Due to the effect of shock wave diffraction and plate convergence, In order to enhance the effect of wave elimination and the energy absorption of the core layer, a thicker foam aluminum sandwich panel with a core layer should be selected first.