Recent advances in hybrid lattice-cored sandwiches for enhanced multifunctional performance

详细信息    查看全文

• 作者：Bin Han^a ; ^b ; Zhi-Jia Zhang^b ; ^c ; Qian-Cheng Zhang^b ; ^c ; Qi Zhang^a ; Tian Jian Lu^b ; ^c ; ^{tjlu@mail.xjtu.edu.cn} ; Bing-Heng Lu^a
• 关键词：Hybrid lattice-cored sandwich ; Multifunctional properties ; Strengthening ; Energy absorption ; Sound absorption
• 刊名：Extreme Mechanics Letters
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：10
• 期：Complete
• 页码：58-69
• 全文大小：5744 K
• 卷排序：10

文摘

Ultralight sandwich structures with either two-dimensional (2D) prismatic or three-dimensional (3D) lattice truss cores, such as honeycombs, folded panels (corrugations) and pyramidal trusses, are known to possess attractive mechanical stiffness/strength and impact resistance. These properties can be significantly improved further by inserting different materials into the interstices of the lattices to construct hybrid lattice-cored sandwiches, as summarized in this mini-review. Three different types of hybrid lattice-core for sandwich constructions are discussed, including ceramic- or concrete-filled lattice cores for superior penetration resistance, metallic or polymeric foam-filled lattice cores for simultaneous enhancement in load-bearing and energy absorption, and metallic honeycomb-corrugation cores for simultaneous load-bearing, energy absorption and broadband low-frequency sound absorption. Corresponding enhancement mechanisms are explored.