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Mechanical Response of All-composite Pyramidal Lattice Truss Core Sandwich Structures

Ming Li

材料科学技术（英文）

The mechanical performance of an all-composite pyramidal lattice truss core sandwich structure was investigated both theoretically and experimentally. Sandwich structures were fabricated with a hot compression molding method using carbon fiber reinforced composite T700/3234. The out-of-plane compression and shear tests were conducted. Experimental results showed that the all-composite pyramidal lattice truss core sandwich structures were more weight efficient than other metallic lattice truss core sandwich structures. Failure modes revealed that node rupture dominated the mechanical behavior of sandwich structures.

关键词: Sandwich structures

Mechanical Response of All-composite Pyramidal Lattice Truss Core Sandwich Structures

Ming Li

材料科学技术（英文）

The mechanical performance of an all-composite pyramidal lattice truss core sandwich structure was investigated both theoretically and experimentally. Sandwich structures were fabricated with a hot compression molding method using carbon fiber reinforced composite T700/3234. The out-of-plane compression and shear tests were conducted. Experimental results showed that the all-composite pyramidal lattice truss core sandwich structures were more weight efficient than other metallic lattice truss core sandwich structures. Failure modes revealed that node rupture dominated the mechanical behavior of sandwich structures.

关键词: Sandwich structures

X-cor夹层结构的平拉性能

李勇 , 肖军 , 原永虎 , 谭永刚

宇航材料工艺 doi:10.3969/j.issn.1007-2330.2010.01.022

研究了Pin植入角、Pin直径和Pin材料对X-cor夹层结构平拉强度及平拉模量的影响.平拉性能试样采用Rohacell 31泡沫作为芯材,Pin采用不同直径的T300/FW-63和SC-240/FW-63拉挤细杆.结果表明,X-cor夹层结构平拉强度增强效率随着植入角度的增加先增大、后减小,平拉模量的增强效率则随植入角的增加而减小;随Pin直径减小,平拉强度增强效率增加,平拉模量增强效率降低;不同Pin材料对X-cor夹层结构平拉强度增强效率相同,高模量的Pin对X-cor夹层结构平拉模量的增强效率更高.

关键词: 夹层结构 , X-cor , Pin , 平拉试验

Mechanical Response of All-composite Pyramidal Lattice Truss Core Sandwich Structures

材料科学技术（英文）

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