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Published October 2011 | public
Journal Article

Modeling and in situ identification of material parameters for layered structures based on carbon nanotube arrays


We test and model the mechanical response of a multilayer composite structure composed of alternating layers of aligned carbon nanotubes and copper foils under compression. We employ a bistable mass-spring model to capture the three-phase hysteretic response of the loading curve with excellent agreement with the experimental observations. An in situ identification procedure is proposed to quantify the material parameters corresponding to the mesoscopic scale of the structure. We refine the results using a genetic algorithm and compare the response of two different models based on three and four springs in series. The localization of deformation can be accurately captured by these simplified models, which hold promise for the design of novel materials with tailored deformation responses.

Additional Information

© 2011 Elsevier Ltd. Available online 6 May 2011. CD acknowledges support from the Institute for Collaborative Biotechnologies under contract W911NF-09-D-0001 with the Army Research Office. FF acknowledges the support of the University Centre for Risk Prediction and Prevention (CUGRI) in association between the Universities of Salerno and Napoli Federico II, Italy. FF also thanks the Graduate Aerospace Laboratory at the California Institute of Technology (GALCIT) for the hospitality during his visit. JRR gratefully acknowledges the U.S. Department of Defense and the Army Research Office for their support via a National Defense Science and Engineering Graduate (NDSEG) fellowship.

Additional details

August 22, 2023
October 24, 2023