Constitutive modelling of wavy elastic response of metallic glass ribbon

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.

KEYWORDS:

• Metallic glass ribbons
• wavy elastic response
• elastic strain
• MEMS
• NEMS

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University, Abha-KSA, for funding this work through General Research Project [grant number G.R.P-426-39].