An evolution in grid structures: a study for conceptual grid structure design

2012 ◽

Vol 166-169 ◽

pp. 207-210

Author(s):

Ke Li ◽

Jing Ji

Keyword(s):

Material Selection ◽

Single Point ◽

Canopy Structure ◽

Element Model ◽

Internal Force ◽

Structure Design ◽

Structural Deformation ◽

Grid Structure ◽

Shape Variable ◽

Selection Of

Combined with canopy structure design of a old-man university, this paper introduces the selection of scheme, material selection and Load value of fan-shape variable height four pyramid grid structure. Using the software ANSYS, finite element model of grid structure is established, and internal force and deformation of the members are got, the bearing capacity of the members and structural deformation are checked, finally design and construction for the node of members and the detail of structure are given, these can provide references for the design of similar engineering.

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Buckling Analysis of Advanced Grid Stiffened Composite Cylinders

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.875-877.755 ◽

2014 ◽

Vol 875-877 ◽

pp. 755-762 ◽

Cited By ~ 5

Author(s):

Kang Hee Lim ◽

He Wei ◽

Zhi Dong Guan

Keyword(s):

Cylindrical Shells ◽

Computational Cost ◽

Structure Design ◽

Grid Structure ◽

Constant Weight ◽

Buckling Loads ◽

Design Variables ◽

Weight Design ◽

Composite Cylinders ◽

Composite Cylindrical Shells

Advanced Grid Stiffened(AGS) composite cylindrical shells are widely used in aerospace industry. This study analyzes the buckling loads for various types of grid structures of AGS composite cylindrical shells. The grid structures are classified as Angle-grid, Iso-grid, Kagome-grid, Ortho-grid, Orthotropic-grid and the characteristics had been analyzed for each grid type. In this study, the various types of grid structure were designed that weight of the whole structure keeps a constant. Under the condition of constant-weight, design variables such as grid angle, number of the grid, h/t ratio of the grid were controlled, and buckling loads of the grid structures were analyzed. The results were analyzed for each type of grid and each design variable of the structures. This study was performed through finite element method and the accuracy of the analysis was verified by previous studies. Finally, buckling modes were analyzed with the thickness of the skin. The selection for the most appropriate design variables had been verified for each grid type and the result can be applied to the optimization of grid structure design, and is also very helpful for reducing the computational cost and obtaining optimization values more accurately.

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RESEARCH ON MODELING AND OPTIMIZATION PROGRAM OF LONG-SPAN HYBRID GRID HANGAR BASED ON LEVERAGE PRINCIPLE

Stavební obzor - Civil Engineering Journal ◽

10.14311/cej.2021.01.0012 ◽

2021 ◽

Vol 30 (1) ◽

Author(s):

Wenbo Zhang ◽

Deyou Wang ◽

Guangshun Shi

Keyword(s):

Optimization Design ◽

Design Method ◽

Vertical Displacement ◽

Automatic Generation ◽

Structure Design ◽

Particle Swarm Algorithm ◽

Grid Structure ◽

C Language ◽

Long Span ◽

Hybrid Grid

A long-span hybrid grid hangar structure and a modeling method for the long-span hybrid grid hangar structure based on the principle of leverage are proposed in this paper. Based on the SAP2000 spatial structure design software, the C# language was used to develop a plug-in to automatically create a long-span hybrid grid structure based on the principle of leverage, which realized the automatic generation by inputting parameters such as the span of the hangar structure, the number of horizontal grids, and the number of vertical grids. The optimization design method of the long-span hybrid grid structure based on particle swarm algorithm is proposed. SAP2000 software is used and the C# language is used to develop the optimization design program of the long-span hybrid grid structure based on the principle of leverage. The optimization design is carried out, and the optimization results show that the program can reduce the thickness of the roof and reduce the vertical displacement at the opening of the hangar roof on the basis of meeting the current specifications.

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Calculation and Design Analysis of Grid with Six-Point Supporting

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.166-169.211 ◽

2012 ◽

Vol 166-169 ◽

pp. 211-214

Author(s):

Ke Li ◽

Jing Ji ◽

Yan Li

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Design Process ◽

Internal Force ◽

Structure Design ◽

Design Analysis ◽

Calculation Methods ◽

Grid Structure ◽

Specific Design ◽

Grid Design

In combination with a distinctive grid design with six-point supporting, three kinds of calculation methods of the grid structure are compared. By finite element method the internal force of the bars and deformation of the whole structure are calculated, and specific design process is given. Finally design details of bolts ball nodes of grid are given, these can provide reference for the same kind of grid structure design.

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