damping in microstructures – TechConnect Briefs

Compact Model for the Squeezed-Film Damping Including the Open Border Effects

Veijola T., Ruokonen K., Tittonen I., Helsinki University of Technology, FI

A numerical model for the squeezed-film damping between moving rigid, rectangular surfaces is presented. The emphasis is on the nontrivial boundary conditions for the flow, accounting for the finite acoustic impedance of the surrounding gas [...]

Compact Damping Models for Lateral Structures Including Gas Rarefaction Effects

Veijola T., Helsinki University of Technology, FI

Compact models for the viscous damping coefficient in narrow air gaps between laterally moving structures are reported. The gas rarefaction effects are included in these small-displacement models. In the first part of the paper, a [...]