Multiscale model for bottom-up prediction of failure parameters of unidirectional carbon-fiber-reinforced composite lamina from the atomic to filament-scales, and its application to failure modeling of open-hole quasi-isotropic composite laminates

IF 3.4 3区 工程技术 Q1 MECHANICS International Journal of Solids and Structures Pub Date : 2024-11-09 DOI:10.1016/j.ijsolstr.2024.113130
Tadashi Watanabe , Yoshiaki Kawagoe , Yamato Hoshikawa , Yosuke Nakai , Kazuki Ryuzono , Tomonaga Okabe
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Abstract

A multiscale model is developed to comprehensively predict the failure parameters associated with the elasto-plasticity of a unidirectional carbon-fiber-reinforced composite lamina; the prediction is performed according to the resin-matrix design. The developed model involves quantum-chemical reaction-path calculations, molecular-dynamics simulations, and micromechanical analyses at the filament scale. The presented model is further combined with an advanced numerical approach developed based on an extended finite-element method, to analyze composites at the laminate scale. Using the established four-scale model, the open-hole tension and compression of a quasi-isotropic laminate are simulated, starting from the composition of an epoxy resin. The predicted elasto-plastic properties and strengths of a unidirectional lamina are in good agreement with the previously reported experimental results. Furthermore, the strengths predicted for the open-hole tests are also plausible, as they are similar to the experimental values reported in literature. The established multiscale model is expected to be useful in composite-material development as it facilitates rapid and exhaustive analysis.
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自下而上预测单向碳纤维增强复合材料层压板从原子到细丝尺度失效参数的多尺度模型及其在开孔准各向同性复合材料层压板失效建模中的应用
建立了一个多尺度模型,以全面预测与单向碳纤维增强复合材料薄片弹塑性相关的失效参数;预测是根据树脂-基质设计进行的。所开发的模型包括量子化学反应路径计算、分子动力学模拟以及丝状尺度的微观力学分析。该模型还与基于扩展有限元法开发的先进数值方法相结合,对复合材料进行层压分析。利用已建立的四尺度模型,从环氧树脂的成分出发,模拟了准各向同性层压板的开孔拉伸和压缩。预测的单向层压板弹塑性能和强度与之前报告的实验结果十分吻合。此外,开孔试验预测的强度也是可信的,因为它们与文献报道的实验值相似。所建立的多尺度模型有助于进行快速、详尽的分析,因此有望在复合材料开发中发挥作用。
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来源期刊
CiteScore
6.70
自引率
8.30%
发文量
405
审稿时长
70 days
期刊介绍: The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.
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