  The modelling of heterogeneous and architected materials poses a significant
challenge, demanding advanced homogenisation techniques. However, the
complexity of this task can be considerably simplified through the application
of micropolar elasticity. Conversely, elastic foundation theory is widely
employed in fracture mechanics and the analysis of delamination propagation in
composite materials. This study aims to amalgamate these two frameworks,
enhancing the elastic foundation theory to accommodate materials exhibiting
micropolar behaviour. Specifically, we present a novel theory of elastic
foundation for micropolar materials, employing stress potentials formulation
and a unique normalisation approach. Closed-form solutions are derived for
stress and couple stress reactions inherent in such materials, along with the
associated restoring stiffness. The validity of the proposed theory is
established through verification using the double cantilever beam
configuration. Concluding our study, we elucidate the benefits and limitations
of the developed theory by quantifying the derived parameters for materials
known to exhibit micropolar behaviour. This integration of micropolar
elasticity into the elastic foundation theory not only enhances our
understanding of material responses but also provides a versatile framework for
the analysis of heterogeneous materials in various engineering applications.
