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​〇Movie and Image

An Initial Morphogenesis tool for Shell Roofings
We have developed a 3D modeling tool that facilitates the initial form creation of shell roofs. The videos and images below are examples of creation using this tool.

(See SAWADA2023 https://doi.org/10.20898/j.iass.2023.015)

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Shell models by 3D printer 1
建築デザインセミナー受講生による3Dプリント製作
Shell models by 3D printer 2
建築デザインセミナー受講生による3Dプリント製作

Structural optimization by ESO method
 

↓Load Point

Fixed node

Fixed node

After performing a structural analysis to calculate the forces acting on each member, we remove members that do not bear much force, and increase the thickness of members that bear large forces. By creating a computer program that repeats the above operations and performing calculations, the optimal structural form emerges. 

Optimization of Cylindrical truss towers by Differential Evolution 

Cylindrical truss topology in 1st generation by Differential Evolution
Cylindrical truss topology in 5th generation by Differential Evolution
Cylindrical truss topology in 10th generation by Differential Evolution

This shows the evolution calculation process of a cylindrical truss using Differential Evolution. We are searching for a truss topology pattern that minimizes the displacement of the load point by fixing the nodes of the cylindrical truss legs and applying a horizontal load perpendicular to the top node. 

​〇Competition proposals by Sawada laboratory students
 

Competition proposal by Sawada Lab studets
〇Recent Works (open access)

・Sawada, Kiichiro, and Sousuke Nakano. "Geometric Classifications of Free-Form Surfaces in the Imaginary Parameter Space of DFT-Based Technique." Journal of the International Association for Shell and Spatial Structures 66.4 (2025): 272-283.(https://ir.lib.shimane-u.ac.jp/56037)

・Rashid, Md Harun Ur, Shingo KOMATSU, and Kiichiro SAWADA. "Performance of optimized large deformable elastic plates under tensile load." Journal of Structural Engineering B 71 (2025): 103-112. (https://doi.org/10.3130/aijjse.71B.0_103)

・An Initial-Morphogenesis Technique of Free-Form Shell Roofing Based on a Fourier Transform, Journal of the IASS, 2023 (https://doi.org/10.20898/j.iass.2023.015) 

・A Study on Multi-Objective Optimization of Large Deformable Elastic Plates, Buildings, 2022 (https://doi.org/10.3390/buildings12091323)
 

Wix.comを使って作成されました

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