Free vibration analysis of a skew sandwich plate with bamboo biocomposite and polylactic acid core under temperature and moisture conditions

Q3 Physics and Astronomy
Atul S Gawande, S. Kattimani, S. Murigendrappa, T. Nguyen-Thoi, H. Kamyab, S. Althamer
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引用次数: 0

Abstract

This article investigates the impact of moisture and temperature on vibration characteristics of bio-composite skew-laminated composite sandwich (SLCS) plates. The bio-composite SLCS plates with bamboo face sheets and polylactic acid (PLA) cores are biodegradable, radiolucent, lightweight, high strength, and withstand vibrations. The coupled thermo-elastic and hygro-elastic finite element (FE) model of the SLCS plate is derived using the higher-order shear deformation theory (HSDT). An initial stress stiffness matrix is developed using the nonlinear strain-displacement relations to incorporate the effect of temperature and moisture in FE modeling. Temperature and moisture-dependent material properties of bamboo fiber-reinforced biocomposite (BFB) and PLA core are employed for the analysis. A comprehensive investigation has been carried out to study the impact of moisture and temperature situations with different geometrical parameters and various skew angles on the frequency of the SLCS plate. The results indicate that the biocomposite sandwich material has excellent potential for structural applications under different environmental conditions in various applications like food processing, and biomedical applications, including MRI and CT scan beds.
温度和湿度条件下竹生物复合材料-聚乳酸夹层板的自由振动分析
研究了湿度和温度对生物复合材料斜交叠层复合材料夹层板振动特性的影响。具有竹面板和聚乳酸(PLA)芯的生物复合SLCS板是可生物降解的、可辐射的、轻质的、高强度的,并且能够承受振动。利用高阶剪切变形理论建立了SLCS板的热弹性和湿弹性耦合有限元模型。利用非线性应变-位移关系建立了初始应力-刚度矩阵,将温度和湿度的影响纳入有限元建模中。采用竹纤维增强生物复合材料(BFB)和聚乳酸芯材的温度和湿度相关材料性能进行了分析。为了研究不同几何参数和不同倾角的湿度和温度对SLCS板频率的影响,进行了全面的研究。结果表明,生物复合材料夹层材料在不同环境条件下具有良好的结构应用潜力,可用于食品加工和生物医学应用,包括MRI和CT扫描床。
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来源期刊
Noise and Vibration Worldwide
Noise and Vibration Worldwide Physics and Astronomy-Acoustics and Ultrasonics
CiteScore
1.90
自引率
0.00%
发文量
34
期刊介绍: Noise & Vibration Worldwide (NVWW) is the WORLD"S LEADING MAGAZINE on all aspects of the cause, effect, measurement, acceptable levels and methods of control of noise and vibration, keeping you up-to-date on all the latest developments and applications in noise and vibration control.
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