Analysing Wave Dynamics in Additively Manufactured Viscoelastic Metamaterials

Elastic metamaterials hold potential for advanced wave manipulation, yet their proper characterization remains underexplored due to challenges in predicting the frequencydependent behavior of constituent polymer. This study presents a comprehensive framework to model the viscoelastic behavior of additively manufactured polymers, focusing on dynamic conditions rather than traditional static settings, using a quasi-1D acrylonitrile butadiene styrene (ABS) metamaterial as a representative system. The methodology combines material characterization through dynamic mechanical analysis (DMA) and tensile testing, and finite-element simulations incorporating frequency-dependent viscoelastic properties (from DMA) combined with ultrasonic transmission experiments. This mix provides a proper tool for precise prediction of wave dynamics in additively manufactured polymer metamaterials and hence a step faciliating functional applications like waveguiding, vibration isolation, energy harvesting, and others.