Integrated analysis tool

The recent developments of strong, light and nano-sized 1D carbon fibres (carbon nanotubes) and 2D sheets (Graphene) have opened enormous possibilities for these fibre reinforced nanocomposites for possible applications in aerospace, automobiles, naval structures. Through a refined higher order and layer dependent kinematic models, we are developing accurate analysis tools for these composites. The size scale effects are important contributory to the limitations of the continuum models for these nano-fibre reinforced composites. Therefore, we apply ad hoc continuum models with inclusion of nonlocal elasticity.

Another important challenge lies in evaluating the effective material properties of these composites when thin carbon fibres agglomerate and form a bulk. We follow micromechanics homogenization schemes as well as RVE based microscale homogenization to capture effective material properties.

We are working to develop finite element based integrated tool which can effectively analyse the thermo-mechanical response of advanced nano-composites.

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Reference Works: 

• Punera, D., 2021. The Effect of Agglomeration and Slightly Weakened CNT-matrix Interface on Free Vibration Response of Cylindrical Nanocomposites, Acta Mechanica. (In press)

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• Punera, D. and Kant, T., 2021. Two Dimensional Kinematic Models for CNT Reinforced Sandwich Cylindrical Panels with Accurate Transverse Interlaminar Shear Stress Estimation, Thin Walled Structures  (Accepted)