Study on the Cross-Section Shape for Automotive Frame on Multiple Axial Loads
複合荷重を考慮した自動車用フレームの断面形状の検討について
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- Available on the other site
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- Publication code
- 20234373
- Paper/Info type
- JSAE Transaction
Vol.54 No.4
- Pages
- 738-744(Total 7 p)
- Date of publication
- Jul 2023
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 河村 力, 2) 本田 正徳, 3) 荒川 仁太, 4) 曙 紘之, 5) 菅田 淳 |
| Author(E) | 1) Chikara Kawamura, 2) Masanori Honda, 3) Jinta Arakawa, 4) Hiroyuki Akebono, 5) Atsushi Sugeta |
| Affiliation(J) | 1) 広島大学，マツダ, 2) マツダ, 3) 広島大学, 4) 広島大学, 5) 広島大学 |
| Abstract(J) | 軽量化と衝突安全性能の両立のため，車体フレームを対象に多目的最適化を用いて，断面を拡大することなく曲げ強度とねじりの強度を向上しつつ、軽量化可能な断面形状を導出した．更に，力学的に考慮した設計空間とすることで，曲げ強度とねじり強度の機能配分による最適断面の遷移を示し、それを座屈の視点から説明した． Translation |
| Abstract(E) | Due to the tightening of CO2 regulations for automobiles, it is required to significantly improve fuel efficiency, and reduce the weight of the car body. On the other hand, the demand for improving crash safety performance is increasing, and achieving both weight reduction and crash safety performance are a major issue in future automobile body development. Therefore, it is necessary to improve the strength and weight reduction of the frame that constitutes the car body. In this study, we assume an automobile structure that receives multiple axial loads, and perform multipurpose optimization of the cross-sectional shape. For the purpose of improving strength and reducing mass under the conditions of multiple axial loads, optimized cross-sectional shape. The design variable was the XY coordinates of the vertices of the cross section. Objective function was maximize torsional strength, maximize bending strength and mass minimization. As a result of the optimization, We not only get a lightweight cross-section, but also revealed that transition of the cross-sectional shape on the Pareto line of torsional strength and bending strength is existed. In addition, the mechanical validity was verified from the viewpoint of buckling. |
