A piecewise-linear reduced-order model of squeeze-film damping for deformable structures including large displacement effects

TL;DR

This paper develops a piecewise-linear reduced-order model for squeeze-film damping in deformable structures with large displacements, enabling efficient analysis and accurate prediction of dynamic behavior.

Contribution

It introduces a novel piecewise-linear modeling approach for the Reynolds equation that accounts for large displacements in deformable structures.

Findings

Accurate prediction of pull-in time for microswitches

Comparison with experimental data shows good agreement

Analysis of advantages and drawbacks of linearization methods

Abstract

This paper presents a reduced-order model for the Reynolds equation for deformable structure and large displacements. It is based on the model established in [11] which is piece-wise linearized using two different methods. The advantages and drawbacks of each method are pointed out. The pull-in time of a microswitch is determined and compared to experimental and other simulation data.