Acta Mechanica

Abstract This study models and analyzes the thermomechanical vibration behavior of doubly curved sandwich shallow shells using a novel high-order sinusoidal shear stress theorem. The equations of motion are derived from Hamilton's principle and solved with the Navier method. The doubly curved sandwich shell comprises a functionally graded core layer and a hybrid surface layer made of metal and ce…

Abstract This work explores the mechanical characteristics response electro-magneto-thermoelastic (EMT) nanobeams by simultaneously accounting for fractional viscoelasticity, nonlocal elastic interactions, doublet mechanics, and couple-stress effects. A meta-auxetic architecture is integrated into the nanobeam inspired by graphene-based origami structures, allowing its mechanical behavior to be t…

Abstract In comparison with metals, the characteristic temperatures at which polymers change their behaviour are significantly smaller. Temperature-related or temperature-driven phenomena in meltable thermoplastics, weakly crosslinked elastomers or highly crosslinked thermosets have their origin in physical or chemical changes on the microscale. On the macroscopic scale, the mechanical, thermal a…

Abstract This paper develops a variational modeling framework for voltage-actuated piezoelectric plates and multilayer laminates under full electromagnetic coupling. By applying Hamilton’s principle to a continuum setting, the formulation retains full electromagnetic coupling through Maxwell’s equations, capturing both electric and magnetic field effects. This enables consistent reductions to qua…

Abstract The ability to control the dynamic response of structured materials through externally induced stress fields has received growing attention in the design of adaptive systems. This study investigates a novel approach to modulating wave propagation characteristics by exploiting stress fields generated by piezoelectric materials. A refined electromechanical model is developed within the Car…