A DG-VLM framework for computational static aeroelastic analysis of composite wings

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composite Structures Pub Date : 2024-11-18 DOI:10.1016/j.compstruct.2024.118697

Dario Campagna , Vincenzo Gulizzi , Ivano Benedetti

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Abstract

A computational framework for static aeroelastic analysis of composite laminated plates is proposed, whose novelty is the conjoined use of a structural discontinuous Galerkin (DG) formulation and an aerodynamic vortex lattice method (VLM), suitably coupled for the monolithic solution of the aeroelastic problem. The structural method is built on variable-order generalized kinematics, which allows the seamless adoption of either beam or plate modeling strategies, with on-demand order of polynomial approximation over the transverse and in-plane dimensions of the structural elements. The underlying DG formulation also simplifies the coupling between the structural and aerodynamic grids, thus providing a versatile tool for the aeroelastic analysis of either low or high aspect-ratio composite wings. Several numerical tests have been performed to assess the convergence features of the proposed framework as well as its accuracy with respect to available computational and experimental benchmark data. The obtained results confirm its robustness and highlight its potential for aeroelastic assessments in early aircraft conceptual design.

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复合材料机翼静态气动弹性计算分析的 DG-VLM 框架

本文提出了一种用于复合材料层压板静态气动弹性分析的计算框架，其新颖之处在于结合使用了结构非连续伽勒金（DG）公式和空气动力学涡流网格法（VLM），并将其适当地耦合用于气动弹性问题的整体求解。结构方法建立在可变阶广义运动学基础上，允许无缝采用梁或板建模策略，并可根据需要对结构元素的横向和平面尺寸进行多项式近似阶数。基本的 DG 公式还简化了结构网格和空气动力学网格之间的耦合，从而为低纵横比或高纵横比复合材料机翼的气动弹性分析提供了一个通用工具。为了评估所提出框架的收敛特性及其与现有计算和实验基准数据相关的准确性，我们进行了多次数值测试。所获得的结果证实了其稳健性，并突出了其在早期飞机概念设计中进行气动弹性评估的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.