An Analytical Method to Calculate Effective Elastic Properties of General Multifunctional Honeycomb Cores in Sandwich Composites

Sather, Erik ; Krishnamurthy, Thiagaraja

关键词: STRUCTURAL ANALYSIS;    ELASTIC PROPERTIES;    LAMINATES;    HONEYCOMB CORES;    SANDWICH STRUCTURES;    COMPOSITE STRUCTURES;    WALLS;    SHELLS (STRUCTURAL FORMS);    THREE DIMENSIONAL MODELS;    LOADS (FORCES);    FINITE ELEMENT METHOD;    ANALYTIC GEOMETRY;    ELECTRIC BATTERIES;   

RP-ID  :  NASA/TM-2019-220275,L-21020,NF1676L-32943

学科分类：力学，机械学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Sandwich composite structures are ideal configurations in which to incorporate additional functionality beyond load-carrying capabilities. The inner core-walls can be layered to incorporate other functions such as power storage for a battery. In this work we investigate an assemblage of analytical tools to compute effective properties that allow complex layered core architectures to be homogenized into a single continuum layer. This provides a great increase in computational efficiency to numerically simulate the structural response of multifunctional sandwich structures under applied loads. We present a coupled analytical method including an extensive numerical verification of the accuracy of this method.