Finite element method on topology optimization applied to laminate composite of fuselage structure

IF 1.1 Q4 MECHANICS

Curved and Layered Structures Pub Date : 2023-01-01 DOI:10.1515/cls-2022-0191

A. Aribowo, M. I. Adhynugraha, Fadli Cahya Megawanto, Arif Hidayat, T. Muttaqie, F. A. Wandono, Abian Nurrohmad, Chairunnisa, Sherly Octavia Saraswati, Ilham Bagus Wiranto, Iqbal Reza Al Fikri, M. Saputra

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引用次数: 1

Abstract

Abstract This research applies a numerical study of topology optimization of laminate composite structures by using a finite element method (FEM). In this methodology, the plies orientation is excluded from the optimization. The geometry-based optimization from frames of a MALE UAV fuselage structure is presented. The minimum strain energy with an optimization constraint of 20% of weight reduction is used in the objective function. Before the primary analysis, benchmark studies of topology optimization without considering orientations from previously published literature are performed. The convergence studies were taken to acquire the appropriate mesh size in the FEM technique, which utilized a four-noded shell element. The finite element analysis and optimization results showed that the structural design of the newly framed composite fuselage MALE UAV meets the structural strength requirements specified in the airworthiness standard STANAG 4671.

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拓扑优化的有限元法在机身结构层合材料中的应用

摘要本文采用有限元方法对层合复合材料结构的拓扑优化问题进行了数值研究。在这种方法中，层的方向被排除在优化之外。提出了基于几何的MALE无人机机身结构框架优化方法。目标函数采用最小应变能，优化约束为减重20%。在初步分析之前，不考虑先前发表文献的方向，对拓扑优化进行基准研究。在采用四节点壳单元的有限元技术中，进行了收敛性研究，以获得合适的网格尺寸。有限元分析和优化结果表明，新框架MALE无人机复合材料机身结构设计满足适航标准STANAG 4671规定的结构强度要求。

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

Curved and Layered Structures MECHANICS-

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

14 weeks

期刊介绍： The aim of Curved and Layered Structures is to become a premier source of knowledge and a worldwide-recognized platform of research and knowledge exchange for scientists of different disciplinary origins and backgrounds (e.g., civil, mechanical, marine, aerospace engineers and architects). The journal publishes research papers from a broad range of topics and approaches including structural mechanics, computational mechanics, engineering structures, architectural design, wind engineering, aerospace engineering, naval engineering, structural stability, structural dynamics, structural stability/reliability, experimental modeling and smart structures. Therefore, the Journal accepts both theoretical and applied contributions in all subfields of structural mechanics as long as they contribute in a broad sense to the core theme.