Optimal Configuration for Fiber Reinforced Composites under Uncertainties of Material Properties and Loadings

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by Yoshisada Murotsu, Univ of Osaka Prefecture, Osaka, Japan,
Mitsunori Miki, Univ of Osaka Prefecture, Osaka, Japan,
Shaowen Shao, Univ of Osaka Prefecture, Osaka, Japan,

Document Type: Proceeding Paper

Part of: Probabilistic Mechanics and Structural and Geotechnical Reliability:

Abstract: Fiber reinforced composite structures could be designed by selecting proper fiber orientation in structures to suit specified desires for strength, stiffness or other mechanical properties. The design variables related with optimal configurations in composite laminate involve the number of fiber orientation axes, orientation angles and ply ratios for different fiber axes. From the view point of structural design, these three kinds of variables may be respectively considered as the topological, geometrical and sizing variables, as in other common structures. This paper presents a systematic optimization procedure for composite laminate structures to simultaneously derive the optimal solutions for the above mentioned three types of variables based on reliability concept.

Subject Headings: Fabrics | Composite structures | Laminated materials | Material properties | Structure reinforcement |

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