Pursula A. – TechConnect Briefs

Extending the Validity of Existing Squeezed-Film Damper Models with Elongations of Surface Dimensions

Veijola T., Pursula A., Helsinki University of Technology, FI

Border flow effects in squeezed-film dampers having a gap separation comparable with the surface dimensions are studied with 2D and 3D FEM simulations and with analytic models derived from the linearized Reynolds equation for small [...]

Hierarchical Finite Element Simulation of Perforated Plates with Arbitrary Hole Geometries

Råback P., Pursula A., Junttila V., Veijola T., CSC - Scientific Computing, FI

The squeezed-film-damping of micro-electro-mechanical devices may be reduced by creating a number of small holes into the structure. Unfortunately, in the simulation of the devices it is possible to consider only a few holes in [...]