THERMAL BUCKLING AND BENDING ANALYSES OF CARBON FOAM BEAMS SANDWICHED BY COMPOSITE FACES UNDER AXIAL COMPRESSION

IF 10.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

Facta Universitatis-Series Mechanical Engineering Pub Date : 2022-11-30 DOI:10.22190/fume220404027s

B. Safaei, Emmanuel Chukwueloka Onyibo, Dogus Hurdoganoglu

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引用次数: 6

Abstract

The bending and critical buckling loads of a sandwich beam structure subjected to thermal load and axial compression were simulated and temperature distribution across sandwich layers was investigated by finite element analysis and validated analytically. The sandwich structure was consisted of two face sheets and a core, carbon fiber and carbon foam were used as face sheet and core respectively for more efficient stiffness results. The analysis was repeated with different materials to reduce thermal strain and heat flux of sandwich beams. Applying both ends fixed as temperature boundary conditions, temperature induced stresses were observed, steady-state thermal analysis was performed, and conduction through sandwich layers along with their deformation nature were investigated based on the material properties of the combination of face sheets and core. The best material combination was found for the reduction of heat flux and thermal strain, and addition of aerogel material significantly reduced thermal stresses without adding weight to the sandwich structure.

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复合材料夹层泡沫碳梁轴压热屈曲和弯曲分析

对夹层梁结构在热载荷和轴压作用下的弯曲载荷和临界屈曲载荷进行了模拟，采用有限元分析方法研究了夹层结构层间的温度分布，并进行了解析验证。夹层结构由两个面板和一个芯板组成，碳纤维和泡沫碳分别作为面板和芯板，以获得更有效的刚度结果。为了减小夹层梁的热应变和热流密度，对不同材料进行了重复分析。以两端固定为温度边界条件，观察了温度诱导应力，进行了稳态热分析，并基于面片-芯复合材料的材料特性，研究了夹层的导通及其变形特性。在不增加夹层结构重量的情况下，气凝胶材料的加入显著降低了夹层结构的热应力。

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来源期刊

Facta Universitatis-Series Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

14.40

自引率

2.50%

发文量

审稿时长

6 weeks

期刊介绍： Facta Universitatis, Series: Mechanical Engineering (FU Mech Eng) is an open-access, peer-reviewed international journal published by the University of Niš in the Republic of Serbia. It publishes high-quality, refereed papers three times a year, encompassing original theoretical and/or practice-oriented research as well as extended versions of previously published conference papers. The journal's scope covers the entire spectrum of Mechanical Engineering. Papers undergo rigorous peer review to ensure originality, relevance, and readability, maintaining high publication standards while offering a timely, comprehensive, and balanced review process.