Sánchez-Majano Alberto Racionero, Azzara Rodolfo, Pagani Alfonso, Carrera Erasmo
Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy.
Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, P.O. Box 1664, Al Khobar 31952, Saudi Arabia.
Materials (Basel). 2021 Oct 28;14(21):6486. doi: 10.3390/ma14216486.
New concepts of lightweight components are conceived nowadays thanks to the advances in the manufacture of composite structures. For instance, mature technologies such as Automatic Fibre Placement (AFP) are employed in the fabrication of structural parts where fibres are steered along curvilinear paths, namely variable angle tow (VAT), which can enhance the mechanical performance and alleviate the structural weight. This is of utmost importance in the aerospace field, where weight savings are one of the main goals. For that reason, shell structures are commonly found in the aerospace industry because of their capabilities of supporting external loadings. Straight-fibre composite shell structures have been studied in recent decades and, now, spatially varying composite shells are attracting the attention of manufacturers. This work analyses the mechanical behaviour of VAT composite shells subjected to different external loadings and boundary conditions. The Carrera Unified Formulation (CUF) is employed to obtain the different structural models in a systematic and hierarchic manner. The outcomes of such numerical models are discussed and compared with commercial software Abaqus.
由于复合结构制造技术的进步，如今人们构思出了轻质部件的新概念。例如，诸如自动纤维铺放（AFP）等成熟技术被用于制造结构部件，在这些部件中，纤维沿着曲线路径铺设，即变角度丝束（VAT），这可以提高机械性能并减轻结构重量。这在航空航天领域至关重要，因为减轻重量是主要目标之一。因此，壳结构在航空航天工业中很常见，因为它们具有承受外部载荷的能力。近几十年来，直纤维复合壳结构已得到研究，现在，空间变化的复合壳正吸引着制造商的关注。这项工作分析了承受不同外部载荷和边界条件的VAT复合壳的力学行为。采用卡雷拉统一公式（CUF）以系统和分层的方式获得不同的结构模型。讨论了这些数值模型的结果，并与商业软件Abaqus进行了比较。
