M-型皱褶芯材弹性常数的细观力学模型  

Meso-Mechanical Model of Elastic Constants of M-Type Folded Core

作　　者：王志瑾[1] 徐庆华[1] 

机构地区：[1]南京航空航天大学航空宇航学院,南京210016

出　　处：《南京航空航天大学学报》2004年第4期449-453,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金 ( 90 2 0 5 0 3 2 )资助项目

摘　　要：研究了皱褶芯材的几何特征和承力特性 ,给出了其当量弹性常数求解的细观力学模型。该模型采用材料力学的方法推导出了 M-型皱褶芯材的当量密度ρ、当量线弹性模量Εz 和当量剪切模量 Gyz。The sandwich panel with a folded core is a new type one and has promising futures for the application in flight vehicles. A meso-mechanical model for elastic constants of the folded core is set up based on martial mechanics, in which the geometric characteristics and the deformation properties of the core are discussed. Then the equivalent density, equivalent Young′s modulus and the shear moduli of M-type folded core are deduced. The expressions of the moduli given by this paper are simple thus they are used for analyzing the mechanical properties of the sandwich panel with the folded core and optimum design of the panel.

关 键 词：皱褶芯材 弹性常数 细观力学模型 当量密度 

分 类 号：TB33[一般工业技术—材料科学与工程]