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Prediction of interface stiffness of single-walled carbon nanotube-reinforced polymer composites by shear-lag model

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Abstract

Interfacial stress transfer of single-walled carbon nanotube-reinforced polymer composites subjected to uniaxial tension was investigated by a newly developed shear-lag model integrated with a spring layer model. A linear relationship between the tangential relative displacement and the interfacial shear stress was assumed for the interface which is determined by van der Waals forces. The interface stiffness parameter was determined through comparing the stress distribution of the shear-lag model with multiscale simulation results. The effect of the interface stiffness and the nanotube’s aspect ratios on the distribution of stress in CNT-reinforced composites was studied.

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Acknowledgements

The work described in this paper was supported by the Frontier and Application Basic Research Program of Chongqing Science and Technology Commission (Grant Nos. cstc2015jcyjA50030, cstc2018jcyjAX0696), Fundamental Research Funds for the Central Universities (Project Nos.106112017CDJZRPY0015, 2018CDQYHK0029) and supported by 111 Project of China (Grant No. B18062). The work was also supported by the National Natural Science Foundation of China (Grant No.11672099). The authors thank Dr. Li Chunyu for helpful suggestions.

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Authors and Affiliations

  1. Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing, 400045, China

    Yan-Gao Hu, Zh. h. Chen & S. T. Gu

  2. School of Civil Engineering, Chongqing University, Chongqing, 400045, China

    Yan-Gao Hu, Y. F. Li, J. Han, Zh. h. Chen & S. T. Gu

  3. Qingdao Institute of Technology, Qingdao, 266300, Shandong, China

    C. P. Hu

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  1. Yan-Gao Hu
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  2. Y. F. Li
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Correspondence to Yan-Gao Hu.

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Hu, YG., Li, Y.F., Han, J. et al. Prediction of interface stiffness of single-walled carbon nanotube-reinforced polymer composites by shear-lag model. Acta Mech 230, 2771–2782 (2019). https://doi.org/10.1007/s00707-019-02426-7

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  • DOI: https://doi.org/10.1007/s00707-019-02426-7

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