学术
摘 要:
考虑共面载荷作用时薄壁蜂窝铝孔壁的弯曲、伸缩和剪切变形，基于Timoshenko粱理论精确推导出了其共面弹性模量的计算公式，并利用壳单元设计了利用蜂窝铝特征单元来求共异面弹性模量的有限元方法．对厂家提供的两种蜂窝样品分别利用理论和有限元法进行了计算，计算结果和实验数据相吻合，证明理论公式和有限元法的正确性．最后就结构参数对蜂窝铝各弹性模量相关材料效率的影响规律进行了分析．[著者文摘]
文章出处:
《力学与实践》-2008年30卷1期 -35-40页
栏目信息:
ELASTIC MODULI AND MATERIAL EFFICIENCY OF ALUMINUM HONEYCOMB CORES
SUN Deqiang, ZHANG Weihong, SUN Yujin （College of Mechanical ＆ Electrical Engineering, Northwestern Polytechnical University, Xi＇an 710072, China;Xi＇an University of Technology, Xi＇an 710048, China）
Abstract:
With bending, shear and tension deformations being considered in the thin-walled beams within aluminum honeycomb cores under in-plane loadings, the analytical formulas for the in-plane elastic moduli of the aluminum honeycomb cores are derived based on Timoshenko beam theory. The finite element simulation methods for calculating these moduli for a representative unit cell are proposed based on shell elements. The calculations on the elastic moduli of two kinds of aluminum honeycomb cores are carried out, respectively, by using the theoretical and finite element methods. The agreement between the calculated results and the experimental data has verified the theoretical formulas and finite element simulation method. Finally, the effects of aluminum honeycomb cores＇ configuration parameters on their material efficiency are analyzed.[著者文摘]
Key words:
aluminum honeycomb core, in-plane and out-of-plane elastic moduli, finite element simulation, material efficiency
基金资助:
西安理工大学科学研究计划项目X类（104-210603）
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