Multi-objective and multi-loading optimization of ultralightweight truss materials

被引：44
作者：
Liu, JS
Lu, TJ
机构：
[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England
[2] Univ Hull, Dept Engn, Kingston Upon Hull HU6 7RX, N Humberside, England
来源：
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2004年 / 41卷 / 3-4期
基金：
英国工程与自然科学研究理事会;
关键词：
multi-objective optimization; ultralightweight lattice materials; sandwich panels; structural optimization; finite element method;
D O I：
10.1016/j.ijsolstr.2003.10.003
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A multi-parameter optimization procedure for ultralightweight truss-core sandwich panels is presented in this paper. To satisfy high design requirements, the proposed approach incorporates objectives from various structural performances of the material system at many loading cases simultaneously. To determine an optimal topology of the truss-core panel, the procedure combines standard finite element (FE) analysis with structural system profile analysis and multi-factor optimization techniques. Detailed configuration and sizing for both facesheets and individual struts in the sandwich panel are optimized. Two examples are presented: (i) tetragonal core panel, and (ii) plagihedral pyramidal core panel. The optimization improves the structural performance of each panel under multiple loading cases and minimizes its structural mass simultaneously. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：619 / 635
页数：17
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