abstract
- This study presents a computational tool for estimating homogenized properties in linear viscoelastic multi-phasic composites with stratified periodic microstructures, using the asymptotic homogenization method (AHM). Traditional viscoelastic analysis uses integral transforms to simplify time-domain calculations, but it is computationally intensive and restrictive. The two-scale AHM addresses these issues by directly adapting elasticity-based time-domain equations to periodic viscoelastic materials. Four numerical examples illustrate the approach, revealing limitations of the correspondence principle in composite materials and highlighting the simplicity of time-domain implementation. The final case study applies the developed method to estimate the transient effective relaxation moduli in a conceptual perovskite solar panel. © 2025 Taylor & Francis Group, LLC.