繊維強化複合材シェルの曲面形状と積層構成の統合最適化

• 本田 真也

  北海道大学 工学研究院

• 加藤 大翔

  北海道大学 大学院工学研究科

• 成田 吉弘

  北海道大学 大学院工学研究院

• 成田 大祐

  北海道自動車短期大学

書誌事項

タイトル別名

• Multidisciplinary Design Optimization of Surface Shapes and Lay-Up Configurations for Composite Laminated Shells

抄録

Shapes and lay-up configurations of composite laminated shallow shells are optimized simultaneously to maximize the fundamental frequency by a simple genetic algorithm method. The shell shape is defined by a cubic polynomial and this makes it possible to express various shapes of shells with inconstant curvature radii by varying the value of coefficient for each term. The coefficients and the lay-up configuration of the laminated shell are directly employed as design variables, and constraints are imposed on the coefficients and curvature radii to keep shells shallow. The frequencies are calculated by using the Ritz method due to its flexibleness for shell shapes. Results of the present analysis technique agreed well with experimental and finite element analysis results in terms of frequencies and mode shapes. Obtained optimum solutions resulted in higher fundamental frequencies than the shells with general shapes and lay-up configurations.

収録刊行物

• 日本機械学会論文集Ｃ編

  日本機械学会論文集Ｃ編 77 (777), 1793-1802, 2011

  一般社団法人 日本機械学会

キーワード

• Shallow Shell
• Composite Material
• Ritz Method
• Genetic Algorithm
• Optimization
• Experimental Modal Analysis

詳細情報

• CRID: 1390282681363785984
• NII論文ID: 130000873620
• DOI: 10.1299/kikaic.77.1793
• ISSN: 18848354
• ISSN: 03875024
• Web Site: http://www.jstage.jst.go.jp/article/kikaic/77/777/77_777_1793/_pdf
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