.png){kind=icon}
返回
A robust node-shifting method for shape optimization of irregular gridshell structures
.png){kind=icon}
PRE
AI
DOI：10.1016/j.istruc.2021.08.003.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Evolutionary node shifting is an effective approach to the shape optimization of spatial structures for excellent mechanical performance. In this paper, a novel shape optimization algorithm is proposed, which is applicable to complex gridshell structures of irregular geometries and non-uniform grids. With the objective of maximizing the structural stiffness, the nodal coordinates are iteratively updated according to the sensitivity information. The perturbation displacements referring to the inverse hanging method are applied to the initial flat model. By analysis, we found that the irregular grids give rise to non-smooth gradient fields, which results in jagged surfaces. To normalize the non-smooth gradient fields and to prevent the optimization process from falling into local optima, a double filter scheme is introduced in the process of optimization. A variety of examples are presented to demonstrate that the proposed algorithm can effectively solve shape optimization problems of general gridshell structures.
Keyword:
Shape optimization
Gridshell structures
Spatial structures
Node shifting
Filter scheme
期刊
IF:
4.3
论文数:
1.2W
被引数:
2.7W
机构
引用论文
分享收藏分享收藏Response of shape optimization of thin-walled curved beam and rib formation from unstable structure growth in optimization优化中结构不稳定增长对薄壁曲梁和肋形形状优化的响应
PREAI
分享收藏An innovative and inexpensive experimental setup for testing connections in gridshell structures一种创新且廉价的实验装置，用于测试gridshell结构中的连接
PREAI
分享收藏Form finding of assembled lattice structure considering the effect of joint stiffness.png)
STRUCTURES
OAAI
STRUCTURESIF4.3
OAAI分享收藏
查看更多内容