Modeling frequency- and temperature-invariant dissipative behaviors of randomly entangled carbon nanotube networks under cyclic loading
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- Yang, X., He, P. & Gao, H. Nano Res. (2011) 4: 1191. doi:10.1007/s12274-011-0169-y
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Recent experiments have shown that entangled networks of carbon nanotubes exhibit temperature- and frequency-invariant dissipative behaviors under cyclic loading. We have performed coarse-grained molecular dynamics simulations which show that these intriguing phenomena can be attributed to the unstable attachments/detachments between individual carbon nanotubes induced by van der Waals interactions. We show that this behavior can be described by a triboelastic constitutive model. This study highlights the promise of carbon nanomaterials for energy absorption and dissipation under extreme conditions.
KeywordsCarbon nanotubesunstable detachments and attachmentsvan der Waals interactionstriboelastic
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2011