Dynamic response of the clamped sandwich plate impacted by cellular metallic projectile was investigated using experimental and finite element methods. Effects of the projectile impulse, the faceplate thickness, the thickness of core player and different core layers on the shock resistance performance of structure were discussed. The results indicate that the permanent deformation of the back faceplate is effectively controlled to improve the shock resistance capability of sandwich plate by increasing the thickness of faceplate or core layer. It is also found that the improved shock resistance capability can be obtained by increasing the thickness of core layer rather than the thickness of faceplate. The results obtained reveal that the sandwich plate is superior to the monolithic solid plate with the same mass in shock resistance, and the sandwich plate with honeycomb core layer is superior to the aluminum foam sandwich plate with the same mass in shock resistance.%采用实验和数值模拟方法研究了多孔金属子弹冲击下多孔金属固支夹芯方板的动力响应.考察了子弹冲量、面板厚度、芯层厚度及不同芯层类型对夹芯板抗冲击性能的影响.结果表明,通过增加面板厚度或芯层厚度均能有效控制夹芯板后面板的残余变形,改善其抗冲击能力.在给夹芯板增加相同质量的前提下,增加芯层厚度比增加面板厚度能获得更好的抗冲击效果.结果还表明,在本文研究的冲量范围内,夹芯板具有优于等质量单层板的抗冲击能力,而蜂窝芯层构成的夹芯板则具有更优的抗冲击能力.
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