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首页> 外文期刊>Mechanics of Advanced Materials and Structures >The response of clamped sandwich panels with layered-gradient aluminum foam cores to foam projectile impact
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The response of clamped sandwich panels with layered-gradient aluminum foam cores to foam projectile impact

机译：用分层梯度铝泡沫芯的夹紧夹心板响应泡沫射弹冲击

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摘要

The dynamic response of clamped square sandwich panels with layered-gradient closed-cell aluminum foam cores under the impact of metallic foam projectiles is investigated. The present solutions are compared to those results of monolithic solid plates and non-graded monolithic core sandwich panels. The resistance performance of specimens to projectile impact is estimated by the maximum transient central-point deflection of back face-sheet. Results indicate that all the sandwich panels have a better shock resistance performance than the monolithic solid plate with the equivalent mass, and the resistance of sandwich panels to shock loading could be improved by utilizing the layered-gradient cores. The sandwich configuration is demonstrated to be able to effectively contribute to energy absorption and material efficiency, and the positive gradient-core configuration is the best choice in term of specific energy absorption. The strain-rate effect of face-sheet and core materials can mitigate the deformation of the back face-sheet of specimens due to its hardening effect.
机译：研究了在金属泡沫射弹撞击下具有分层梯度闭孔铝泡沫芯的夹紧方形夹层板的动态响应。将本发明的解决方案与整体式固体板的结果进行比较，并不梯度整体芯夹层板。通过背面纸张的最大瞬态中心点偏转，估计样品对弹丸影响的电阻性能。结果表明，通过利用层梯度芯，所有夹心板的所有夹芯板都具有比具有等效质量的单片固体板更好的抗冲击性能，并且通过利用层梯度芯可以改善夹层面板对冲击载荷的阻力。夹心配置被证明能够有效地促进能量吸收和材料效率，并且正梯度核心配置是特定能量吸收期限的最佳选择。面板和芯材的应变率效应可以减轻由于其硬化效果而导致的背面片材的变形。

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