A finite element approach for modeling of CNT-polymer-composites for use in large –area pressure sensors

A large-area pressure sensor matrix, consisting of carbon nanotubes and a polymer, can prevent immobile patients from an injury of the skin called decubitus ulcer. For the modeling of this sensor a multi- scale approach is used. Starting bottom-up with the single carbon nanotube, finite element simulations are used to calculate the equivalent material parameters to replace the nanotubes by cylinders with equivalent properties. Afterwards these cylinders are embedded in a polymer-matrix such that the usage of homogenization techniques leads to the mechanical properties of the CNT-polymer-composite.