期刊
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
卷 114, 期 -, 页码 84-96出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jmps.2018.02.014
关键词
Strain-sensing; Carbon nanotube; Polymeric material; Finite elements
资金
- European Union [642890]
- Marie Curie Actions (MSCA) [642890] Funding Source: Marie Curie Actions (MSCA)
We present finite element simulations to predict the conductivity, elastic response and strain-sensing capability of conductive composites comprising a polymeric matrix and carbon nanotubes. Realistic representative volume elements (RVE) of the microstructure are generated and both constituents are modelled as linear elastic solids, with resistivity independent of strain; the electrical contact between nanotubes is represented by a new element which accounts for quantum tunnelling effects and captures the sensitivity of conductivity to separation. Monte Carlo simulations are conducted and the sensitivity of the predictions to RVE size is explored. Predictions of modulus and conductivity are found in good agreement with published results. The strain-sensing capability of the material is explored for multiaxial strain states. (C) 2018 Elsevier Ltd. All rights reserved.
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