Modeling and Determination of Equivalent Mechanical Properties of a Solar Metamaterial Absorber Using COMSOL Multiphysics

In this study, a multilayer solar metamaterial absorber consisting of an aluminum substrate, a dielectric spacer layer and a gold ring resonator is numerically modeled and its equivalent mechanical properties are systematically investigated. Such metamaterial-based structures are primarily designed to achieve high electromagnetic absorption and efficient solar energy harvesting; however, their mechanical integrity and reliability are equally critical for practical photovoltaic applications. Therefore, a multiphysics numerical framework is employed using COMSOL Multiphysics software to evaluate normal and shear stress, strain and finally equivalent mechanical properties of the proposed structure. For this purpose, at first, a three-dimensional unit-cell model is constructed and controlled tensile and shear loading conditions are applied to this construction. Then, volume-averaged stresses and strains are calculated using the finite element method and the equivalent Young’s modulus, Poisson’s ratio, and shear modulus are extracted. These findings demonstrate that the proposed solar metamaterial absorber maintains acceptable mechanical stability while offering strong potential for advanced photovoltaic applications.

کلیدواژه ها:

Solar metamaterial absorber ، Equivalent mechanical properties ، Young’s modulus ، Poisson’s ratio ، COMSOL Multiphysics