SAEED HOSSEINI; HAMID REZA OVESY; MOHAMMAD ALI VAZIRY-ZANJANY

DOI Number; 10.13009/EUCASS2023-008

A framework for high-fidelity wing structure analysis, sizing and optimization using the finite element method is developed. This framework, which can be applied to both cantilever (CLW) and truss-braced wings (TEW), takes into account the strength, stiffness and stability criteria. The strength sizing is based on shell and beam element properties optimization subjected to different load cases. For the stiffness sizing, a numerical methodology for converting the shell model to a beam model is developed and implemented. The stability sizing is based on engineering methods, and the strut section is sized to withstand compressive loads. The developed methodology is implemented for the sizing of the wing structure of CLW and TEW. Results show that the structural weight of a very high aspect ratio (aspect ratio of 20) truss-braced wing is higher than the high aspect ratio ( aspect ratio of 11) cantilever wing by nearly 30% when sized for strength requirements. On the other hand, the flutter requirements have not affected the CLW design, while the outboard section of the TEW required more stiffness to pass this requirement.

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In Categories: 1. Aerospace Europe Conference 2023, 1.Events, 14. Structures and Materials
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