The Lightweight Design of Low RCS Pylon Based on Structural Bionics

查看全文 作　　者：Hongjie Jiao,Yidu Zhang,Wuyi Chen Mechanical Engineering Design Centre,Beihang University,Beijing 100191,P.R.China

出　　处：《Journal of Bionic Engineering》索引2010年第7卷第2期,共9页

基　　金：support by National Natural Science Foundation of China(Grant No.50975012) 摘　　要：A concept of Specific Structure Efficiency (SSE) was proposed that can be used in the lightweight effect evaluation ofstructures.The main procedures of bionic structure design were introduced systematically.The parameter relationship betweenhollow stem of plant and the minimum weight was deduced in detail.In order to improve SSE of pylons, the structural characteristicsof hollow stem were investigated and extracted.Bionic pylon was designed based on analogous biological structuralcharacteristics.Using finite element method based simulation, the displacements and stresses in the bionic pylon were comparedwith those of the conventional pylon.Results show that the SSE of bionic pylon is improved obviously.Static, dynamic andelectromagnetism tests were carried out on conventional and bionic pylons.The weight, stress, displacement and Radar CrossSection (RCS) of both pylons were measured.Experimental results illustrate that the SSE of bionic pylon is markedly improvedthat specific strength efficiency and specific stiffness efficiency of bionic pylon are increased by 52.9% and 43.6% respectively.The RCS of bionic pylon is reduced significantly. 关键词：lightweight DESIGN specific STRUCTURE efficiency LOW RCS PYLON BIONIC STRUCTURE

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The Lightweight Design of Low RCS Pylon Based on Structural Bionics

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