## APDL基于ANSYS的空间网架结构优化设计

【毕业论文关键词】网架结构；APDL；静力分析；模态分析
Abstract Now the proportion of space truss structure in the construction industry is much more important, especially in the gym, stations, factories and other building systems, space truss structure of large span, aesthetically pleasing, short construction period and other characteristics, make it play an increasingly important role in building system. Its safety and economy became a designer priority issues, this requests us to space grid structure has a deep understanding of, on the basis of full understanding to optimize its structure, in order to achieve the guarantee under the premise of strength and stiffness, lighter weight, lower cost, achieve the economical and economization. This topic on the basis of predecessors' research, taking a stadium double plane space truss as the research object, the finite element method of space truss structure static analysis, get the corresponding strength and stiffness values, on the basis of optimization design for bar, in order to improve the reliability and economy.   This article selects one of the common several kinds of space truss structure, is put four pyramid structure, space frame finite element model is set up by APDL command flow, space truss structure in order to reduce the weight as objective function, optimization  design, and the cross section of the beam size, the height of the rack discretization of random variables such as input, then use static load and dynamic load analysis function of ANSYS, optimize the space truss structure, in order to obtain reliable structure, and the space truss structure of the economy.  源-自*六'维:论.文]网[www.lwfree.cn
[Keywords] Space truss structure ;APDL ;Static load analysis ;The modal analysis

1.1 网架结构单元类型  ...  4
1.2 网架的几何尺寸    6
1.2.1 网格尺寸  .....  6
1.2.2 网架高度  .....  6
1.3 国内外发展现状    7
1.4 网架结构的优点    7
1.5 本文研究内容  ....  8

2.1 杆件选型  .....  9
2.1.1 杆件材料的选用    9
2.1.2 杆件的容许长细比  ...  9
2.1.3 杆件的截面选择  .....  10
2.1.4 杆件的构造要求  .....  10
2.2 网架结构形式的选用  ....  10
2.3 有限元基本概念  .....  11
2.4 ANSYS 软件介绍 .....  12
2.5 模型的建立  ......  12
2.5.1 杆单元类型选择  .....  12 APDL基于ANSYS的空间网架结构优化设计:http://www.lwfree.cn/zidonghua/20190803/36749.html
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