Abstract
A constitutive model is developed that incorporates the wavy elastic response of an arc-shaped metallic glass (MG) ribbon subjected to applied progressive normal load. This model is based on the evolution of the angle made between the buckled ribbon and the horizontal plane. It predicts the amount of elastic strain preventing the yielding of material when it is used as a flat spring or electromechanical switch for MEMS (Micro-Electro-Mechanical Systems) and NEMS (Nano-Electro-Mechanical Systems). The numerical solution of the constitutive equations resulting from the model is compared to experimental results and shows good agreement. This present result is useful for miniaturised ribbons since the estimation of the elastic strain in these was previously quite difficult.