Multiscale Modeling of Graphite/CNT/Epoxy Hybrid Composites
Technical Report,15 Jan 2013,14 Jan 2016
Michigan Technological University Houghton United States
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Incorporation of carbon nanotubes CNTs into epoxy-based composites for aerospace structures has been limited because of the lack of reliable structure-property relationships. Because CNTs are expensive and difficult to fabricate and test, the development of CNTepoxy composites needs to be facilitated with computational techniques. In this work, multiscale modeling techniques have been used to predict the influence ofatomic-level structure on bulk mechanical properties of CNTepoxy composites. In particular, a reactive force field has been used within the MD framework to predict the mechanical response of CNTepoxy composites with di-, tri-, and tetra-functional epoxies. The results of the research indicate that tri-functional epoxies provide the highest level of CNTepoxy load transfer, resulting in bulk materials with higher moduli and strength characteristics.