perforation – TechConnect Briefs

Analytic Damping Model for a Square Perforation Cell

Veijola T., Helsinki University of Technology, FI

A compact model for a square perforation cell is derived. It is generated both analytically and with 3D FEM simulations of the structure. The model consists of six flow resistances, whose values are simple functions [...]

A Method for Solving Arbitrary MEMS Perforation Problems with Edge and Rare Gas Effects

Veijola T., Helsinki University of Technology, FI

We present an accurate and fast method solving arbitrary perforation problems utilizing a solver for an extended modified Reynolds equation, the Local Impedance Reynolds (LIR) solver. The extension includes an additional term in the Reynolds [...]

Macromodel Extraction of Gas Damping Effects for Perforated Surfaces with Arbitrarily-Shaped Geometries

Yang Y-J, Yu C-J, National Taiwan University, TW

In this work, we present an application of an Arnoldi-based model order reduction (MOR) technique on squeezed-film damping (SQFD) effects for arbitrarily-shaped perforated geometries. The compact models generated by this approach not only can be [...]