Abstract
MEMS are devices and systems of distinguished properties and unique characteristics. In this chapter, we attempt to shed light on the main aspects of this technology and its desirable features. Then, we discuss the main challenges that face MEMS engineers in modeling and simulating the static and dynamic behavior of these systems. After that, we give an overview for some of the common phenomena of MEMS that designers and researchers encounter when studying their mechanical behavior. We end the chapter with some remarks on the state-of-the-art of MEMS modeling and simulations.