TITLE:
Thermal Fatigue Life Estimation and Fracture Mechanics Studies of Multilayered MEMS Structures Using a Sub-Domain Approach
AUTHORS:
A. R. Maligno, D. C. Whalley, V. V. Silberschmidt
KEYWORDS:
Sub-Domain; FEM; Thermal Fatigue; Adaptive Remeshing
JOURNAL NAME:
World Journal of Mechanics,
Vol.2 No.2,
April
26,
2012
ABSTRACT: This paper is concerned with the application of a Physics of Failure (PoF) methodology to assessing the reliability of Micro-Electro-Mechanical-System (MEMS) switches. Numerical simulations, based on the finite element method (FEM) using a sub-domain approach, were performed to examine the damage onset (e.g. yielding) due to temperature variations and to simulated the crack propagation different kind of loading conditions and, in particular, thermal fatigue. In this work remeshing techniques were employed in order to understand the evolution of initial flaws due, for instance, to manufacturing processes or originated after thermal fatigue.