Mechanical behaviours of composite sandwich panel with strengthened pyramidal truss cores

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• 作者：Liang Gao ; Yuguo Sun ; Lixin Cong ; Peng Chen
• 关键词：Sandwich structures ; Mechanical behaviour ; Failure analysis
• 刊名：Composite Structures
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：105
• 期：Complete
• 页码：149-152
• 全文大小：1715 K

文摘

An improved design of interlacing laminate layer is presented to fabricate composite sandwich panel with lattice truss cores (CSPLTCs) with a hot-press molding method. The new laminate form greatly enhances the integrity of the cores, leading to increase in mechanical performance, especially for in-plane shear. However, the delamination of the cross-bars becomes the dominated failure in shear tests. The strengthened cores give full play the potential of cross-bars to postpone the progress of the local failure. Results indicate that the present structure provides more superior comprehensive mechanical properties and better energy absorption capacity.