不同截面梁构件的刚度和稳定性优化设计  

BUCKLING AND STIFFNESS DESIGN OPTIMIZATION OF BEAMS OF VARIOUS SECTIONS

作　　者：赵国忠[1] 陈飚松[1] 亢战[1] 顾元宪[1] 

机构地区：[1]工业装备结构分析国家重点实验室,大连理工大学工程力学系,大连116024

出　　处：《工程力学》2002年第3期44-49,共6页Engineering Mechanics

基　　金：国家重点基础研究专项经费资助(G1999032805);高等学校骨干教师资助计划资助

摘　　要：本文运用有限元分析与优化设计软件JIFEX，对五种常用截面梁结构的尺寸和形状进行了抗剪、抗弯、抗扭的刚度优化设计和在轴力、剪力作用下的结构稳定性优化设计。通过对优化设计的计算结果分析，得到了对工程设计有意义的若干结论。然后通过飞机结构中一种波形梁构件的优化，进一步讨论了波形梁的波数对结构稳定性和刚度的影响。A study was made for the stiffness optimization subjected to the constraints of shear, bending, or torsion force, and the buckling optimization subjected to the constraints of axial and shear forces of beam structures with five kinds of commonly used cross sections. The design variables include the sizes and the shape of beam cross-section, and the optimization has been performed with JIFEX, a general-purpose software for the finite element analysis and design optimization. Some useful conclusions for engineering design were drawn by analyses of the computational results of design optimization. Additionally, a wave-shaped beam of aeroplane structure was optimized and the influence of wave number on the structural buckling stability and stiffness was discussed.

关 键 词：有限元分析 优化设计 刚度 屈曲 梁结构 稳定性 飞机结构 

分 类 号：O343.2[理学—固体力学] V214.37[理学—力学]