非贯通球形空腔型轻质仿生结构的设计及其力学性能  

Design and mechanical properties of lightweight bionic structures with non-connected spherical lumens

作　　者：杨志贤[1] 于娜[1] 刘泽华[1] 

机构地区：[1]江苏大学机械工程学院,镇江212013

出　　处：《复合材料学报》2015年第3期848-855,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金青年基金(51005105);江苏大学高级人才启动基金(10JDG058)

摘　　要：为设计并开发轻量型仿生复合材料,分析了东方龙虱鞘翅断面的微观结构,发现龙虱鞘翅的内部空腔结构为非贯通球形空腔。受龙虱鞘翅独特结构的启发设计了一种轻质仿生结构,球形空腔以正六边形的形式分布于该结构内部。为考察该仿生结构的力学特性,引入了两种常见的中空结构,并借助有限元分析软件ANSYS分别对该仿生结构和其他两种常见的中空结构的压缩、拉伸及弯曲性能进行了有限元分析和对比研究。结果表明:该仿生结构较其他两种常见的中空结构具有更强的抗压能力、抗拉能力及更高的屈服强度,力学性能优异。该仿生结构在材料结构方面为研制新型仿生复合材料提供了仿生学参考。In order to design and develop lightweight bionic composites,the microstructure of Cybister's elytra cross section was analyzed.It was found that the inside hollow structure of Cybister's elytra is non-connected spherical lumens.Inspired by the unique structures of Cybister's elytra,a lightweight bionic structure was designed.Some spherical lumens were distributed by regular hexagon form in the structure.In order to investigate the mechanical characteristics of the bionic structure,two kinds of common hollow structures were brought in.By using the finite element analysis software ANSYS,the compression,tension and bending properties of the bionic structure and the other two kinds of common hollow structures were finite element analyzed and comparatively studied.The result shows that the bionic structure has much stronger anti-pressure ability and tensile resistance,as well as far higher yield strength,than the other two kinds of common hollow structures,the mechanical properties are excellent.This bionic structure could provide bionics references for developing novel biomimetic composites in the aspect of material structures.

关 键 词：鞘翅 仿生结构 非贯通空腔 力学性能 有限元分析 

分 类 号：TB332[一般工业技术—材料科学与工程]