梯形格栅结构增强泡沫夹芯复合材料平压性能  

Flatwise compression properties of trapezoidal lattice-web reinforced foam core sandwich composites

作　　者：石昌 王继辉[1] 朱俊 倪爱清[3] 李想[2] SHI Chang;WANG Jihui;ZHU Jun;NI Aiqing;LI Xiang(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Luoyang Ship Material Research Institute,Luoyang 471039,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]洛阳船舶材料研究所,洛阳471039 [3]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《复合材料学报》2022年第2期590-600,共11页Acta Materiae Compositae Sinica

基　　金：中央军委装备发展部预先研究项目(41422060402)。

摘　　要：设计了一种梯形格构增强泡沫夹芯板,并采用真空辅助树脂灌注(VARI)工艺制备了多种不同结构参数的格构增强泡沫夹芯板。实验研究了夹芯板在平面压缩载荷下的失效模式与力学性能,考察了夹芯板结构参数(试样尺寸、格构腹板角度、格构腹板厚度)对夹芯板比压缩强度、比压缩模量与比吸能的影响规律。结果表明:格构增强泡沫夹芯板主要破坏模式为格构腹板的断裂与屈曲;夹芯板中泡沫芯材与格构腹板协同增强;60°夹角格构增强夹芯板相对于无格构增强夹芯板的比压缩强度、比压缩模量和比吸能分别提高了89.4%、137.9%、45.2%;格构增强泡沫夹芯板压缩性能随着格构腹板角度、格构腹板厚度的增加而提高。这类夹芯板的设计为船舶与海洋工程领域轻质夹芯复合材料的应用提供了指导。Trapezoidal lattice-web reinforced foam core sandwich composites with different structural parameters were designed and manufactured by the vacuum assisted resin infusion(VARI) process. The failure modes and mechanical properties of the sandwich panels in flatwise compression loading were studied experimentally. Also,the effects of structural parameters(specimen size, lattice-web angle, lattice-web thickness) on specific compression strength, specific compression modulus and specific energy absorption were investigated. The results show that the main failure modes of the lattice-web reinforced sandwich panels are the fracture and buckling of latticeweb, and the synergistic enhancement effect between foam core and lattice-web is revealed. Compared with the control specimen, the specific compression strength, specific compression modulus and specific energy absorption of the sandwich panel with 60° lattice-web increase by 89.4%, 137.9% and 45.2%, respectively. The compression properties increase with the increase of the angle and thickness of lattice-web. The conclusions above provide reference for the design and application of lightweight sandwich composites in the ship and ocean engineering.

关 键 词：夹芯结构复合材料 格栅结构 破坏模式 平压性能 比吸能 

分 类 号：TB332[一般工业技术—材料科学与工程]