For many problems in science and engineering, it is necessary to describe the emerging macro-scale behavior of a very large number of grains by accounting for the micro-scale phenomena. In these cases, continuum models are a preferred approach. Classical continuum theory is unable to take into account the effects of complex kinematics and distribution of elastic energy in internal deformation modes within the continuum material point. Therefore, there is a need for microstructure informed continuum models accounting properly for the deformation mechanisms identifiable at the micro-scale. The granular micromechanics approach (GMA), provides such a paradigm. The key aspect of the presented approach is the identification of relevant kinematic measures that describe the deformation of the continuum body and link it to the micro-scale deformation [1-2]. The methodology, therefore, has the ability to reveal the connections between the micro-scale mechanisms that store elastic energy and lead to particular emergent behavior at the macro-scale. In this presentation, we will describe the approach and illustrate with examples [3-4].
 Nejadsadeghi, N. and Misra, A. (2020) “Extended Granular Micromechanics Approach: a Micromorphic Theory of Degree n,” Mathematics and Mechanics of Solids, 25(2) 407–429
 Misra, A., Placidi, L., dell’Isola, F. and Barchiesi, E. (2021) “Identification of a geometrically nonlinear micromorphic continuum via granular micromechanics,” Zeitschrift für angewandte Mathematik und Physik, 72, 157.
 Poorsolhjouy, P. and Misra, A., (2019) “Granular Micromechanics Based Continuum Model for Grain Rotations and Grain Rotation Waves,” Journal of Mechanics and Physics of Solids, 129, 244-260.
 Misra, A., Nejadsadeghi, N. De Angelo, M., and Placidi, L. (2020) “Chiral Metamaterial Predicted by Granular Micromechanics: Verified with 1D Example Synthesized using Additive Manufacturing,” Continuum Mechanics and Thermodynamics.