Abstract
A novel method is proposed to determine the constitutive relationship for a laminated composite by considering the strain-dependent microhardness of the heterostructure layers and bonding regions. A theoretical model is deduced to provide an analytical basis for the proposed method. The elemental and microhardness distributions of the heterogeneous layers and bonding regions of the TA1/Al1060/SS430 laminated composite were studied. Laws describing the variation of the microhardness of the heterogeneous layers and bonding regions with strain were obtained. A constitutive relationship for the heterostructure layers and bonding regions of the laminated composite was obtained. V-shaped bending finite-element analysis of a laminated composite using the determined constitutive relationship was conducted to verify its reliability. The proposed novel method may become a promising approach to study the plastic deformation behavior of laminated composites.
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Acknowledgements
This research was supported by funding from the National Natural Science Foundation of China (51875176, 51741503), State Key Laboratory of Solidification Processing in NWPU (SKLSP201631), China Postdoctoral Science Foundation (2016M590677), and National Key R&D Program of China (2017YFB0306405).
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Huang, T., Zhan, M., Pei, Y. et al. Establishment of Constitutive Relationships for Laminated Composites Considering the Variation of the Microhardness with the Strain in the Heterostructure Layers and Bonding Regions. JOM 71, 3962–3970 (2019). https://doi.org/10.1007/s11837-019-03747-7
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DOI: https://doi.org/10.1007/s11837-019-03747-7