Vibration of composite laminated airfoil-beam-structures of electric aircraft in hygrothermal environment: Theory formulation and experimental investigation

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-01-01 DOI:10.1016/j.compstruct.2024.118781

Jian Zang , Bang Chen , Xu-Yuan Song , Zhen Zhang , Ye-Wei Zhang , Li-Qun Chen

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引用次数: 0

Abstract

Electric aircraft is an important development direction in the future aviation field, which greatly reduces the emissions of carbon dioxide and exhaust gases, and is an important way to achieve green aviation. As a typical element of the electric aircraft, the composite airfoil beam structure often operate in hygrothermal environments, which can affect the dynamic performance of the aircraft. This paper provides a method for the vibration of composite laminated airfoil beam structures (CLABSs) under the effect of complex circumstance through systematic theoretical and experimental research. The kinetic, potential and hygrothermal energies of CLABSs induced by the hygrothermal environment are derived by using Kirchhoff theory. To simulate the coupling between plates and the elastic support, a set of uniformly distributed springs is introduced. By employing a set of modified orthogonal polynomials, the dynamic equation for CLABSs is derived within the framework of the Rayleigh approach. The validity of the proposed method is then verified by finite element analysis and experiments investigation. Furthermore, the discussion includes the vibration properties of CLABSs at varying connecting spring stiffnesses, hygrothermal circumstance, and some effective conclusions are drawn, which provide an effective computational method for the vibration analysis and optimization for composite airfoil beam structures.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.