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《Aircraft Design》 2004-04
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An Approach to Structural Topology Optimization about Aircraft Reinforced Frames Design

Deng Yangchen 1,2 ,Liu Xiaoou 2 ,Zhu Jihong 2 (1.Shenyang Aircraft Design & Research Institute,Shenyang 110035,China)(2.Institute of Manufacturing & Electricity Engineering,NorthwesternPolytechnical University,Xi’an 710072,China)  
In view of defects of“gradient variable-threshold”concept used in the conceptual design of aircraft reinforced frames,a “modified gradient variable-threshold”concept is set forth and,in combination with a constraint compensation strategy,forms a new topology optimization algorithm for reinforced frame structural layout to minimize the weight of airframe load-carrying members.The results from several examples show that the topology optimization algorithm is encouraging and worth further study.Three conclusive remarks are obtained from this study:(1)application of the topology optimization combined with CAD/CAE to the conceptual design of aircraft reinforced frames is feasible;(2)the proposed “modified gradient variable-threshold”algorithm is effective;and(3) a new operatable design technique that differs from conventional methods is constructed.
【Fund】: “中国博士后科学基金(2002032222)”;; “航空科学基金(03B53003)”;; “辽宁省科学技术基金(20044007)”;; “西北工业生创业种子基金(Z20030057)”;; “2004年西北工业大学本科毕业设计重点扶持项目”共同资助
【CateGory Index】: V214
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