Viscoelastic modelling and analysis of two-dimensional woven CNT-based multiscale fibre reinforced composite material system

IF 4.703 3区 材料科学 Nanoscale Research Letters Pub Date : 2024-04-30 DOI:10.1186/s11671-024-04009-5
Ashirbad Swain, Vignesh Palani, Sigil Francis, Benedict Thomas, Tarapada Roy
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Abstract

Carbon nanotube (CNT) has fostered research as a promising nanomaterial for a variety of applications due to its exceptional mechanical, optical, and electrical characteristics. The present article proposes a novel and comprehensive micromechanical framework to assess the viscoelastic properties of a multiscale CNT-reinforced two-dimensional (2D) woven hybrid composite. It also focuses on demonstrating the utilisation of the proposed micromechanics in the dynamic analysis of shell structure. First, the detailed constructional attributes of the proposed trans-scale composite material system are described in detail. Then, according to the nature of the constructional feature, mathematical modelling of each constituent phase or building block’s material properties is established to evaluate the homogenised viscoelastic properties of the proposed composite material system. To highlight the novelty of this study, the viscoelastic characteristics of the modified matrix are developed using the micromechanics method of Mori–Tanaka (MT) in combination with the weak viscoelastic interphase (WI) theory. In the entire micromechanical framework, the CNTs are considered to be randomly oriented. The strength of the material (SOM) approach is used to establish mathematical frameworks for the viscoelastic characteristics of yarns, whereas the unit cell method (UCM) is used to determine the viscoelastic properties of the representative unit cell (RUC). Different numerical results have been obtained by varying the CNT composition, interface conditions, agglomeration, carbon fibre volume percentage, excitation frequency, and temperature. The influences of geometrical parameters like yarn thickness, width, and the gap length to yarn width ratio on the viscoelasticity of such composite material systems are also explored. The current study also addresses the issue of resultant anisotropic viscoelastic properties due to the use of dissimilar yarn thickness. The results of this micromechanical analysis provide valuable insights into the viscoelastic properties of the proposed composite material system and suggest its potential applications in vibration damping. To demonstrate the application of developed novel micromechanics in vibration analysis, as one of the main contributions, comprehensive numerical experiments are conducted on a shell panel. The results show a significant reduction in vibration amplitudes compared to traditional composite materials in the frequency response and transient response analyses. To focus on the aspect of micromechanical behaviour on dynamic response and for the purpose of brevity, only linear strain displacement relationships are considered for dynamic analysis. These insights could inform future research and development in the field of composite materials.

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基于 CNT 的二维编织多尺度纤维增强复合材料系统的粘弹性建模与分析
碳纳米管(CNT)因其卓越的机械、光学和电学特性,已成为一种应用前景广阔的纳米材料,促进了相关研究的发展。本文提出了一种新颖而全面的微观力学框架,用于评估多尺度 CNT 增强二维(2D)编织混合复合材料的粘弹性能。文章还重点论证了在壳体结构动态分析中如何利用所提出的微观力学。首先,详细介绍了所提出的跨尺度复合材料系统的具体构造属性。然后,根据结构特征的性质,建立各组成相或构件材料属性的数学模型,以评估拟议复合材料系统的均质粘弹性能。为了突出本研究的新颖性,我们采用森田中(Mori-Tanaka,MT)的微观力学方法,结合弱粘弹性相间(WI)理论,对改性基体的粘弹性特性进行了研究。在整个微观力学框架中,CNT 被认为是随机取向的。材料强度 (SOM) 方法用于建立纱线粘弹特性的数学框架,而单元格方法 (UCM) 则用于确定代表性单元格 (RUC) 的粘弹特性。通过改变碳纳米管成分、界面条件、团聚、碳纤维体积百分比、激励频率和温度,得到了不同的数值结果。此外,还探讨了纱线厚度、宽度以及间隙长度与纱线宽度比等几何参数对此类复合材料系统粘弹性的影响。本研究还探讨了由于使用不同粗细的纱线而产生的各向异性粘弹特性问题。微机械分析的结果为了解拟议复合材料系统的粘弹性能提供了有价值的见解,并提出了其在减振方面的潜在应用。为了证明所开发的新型微观力学在振动分析中的应用,作为主要贡献之一,在壳体面板上进行了全面的数值实验。结果表明,在频率响应和瞬态响应分析中,与传统复合材料相比,振动幅度明显减小。为了重点关注微机械行为对动态响应的影响,同时也为了简洁起见,在动态分析中只考虑了线性应变位移关系。这些见解可为未来复合材料领域的研究和开发提供参考。
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来源期刊
Nanoscale Research Letters
Nanoscale Research Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
15.00
自引率
0.00%
发文量
110
审稿时长
2.5 months
期刊介绍: Nanoscale Research Letters (NRL) provides an interdisciplinary forum for communication of scientific and technological advances in the creation and use of objects at the nanometer scale. NRL is the first nanotechnology journal from a major publisher to be published with Open Access.
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