Anchor losses are one of the dominant sources of dissipation in micro-structures and their influence is even increased in the presence of axial loads. MEMS in which they are likely to play a major role include bistable elements which are nowadays commonly employed in shock sensors and energy harvesters. In this contribution we compute anchor losses both with a semi-analytical approach based on the theory of beams and a fully 3D finite element method including PML for wave dissipation. The two techniques provide coherent predictions and confirm the expectations of strong anchor losses. A fully analytical model is also proposed in the range of limited compressive forces and represents a valid tool for the design of new devices.
|Titolo:||Semi-analytical and numerical estimates of anchor losses in bistable MEMS|
|Autori interni:||FRANGI, ATTILIO ALBERTO|
|Data di pubblicazione:||2016|
|Rivista:||INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES|
|Appare nelle tipologie:||01.1 Articolo in Rivista|
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|ijss15-anchor.pdf||1.05 MB||Adobe PDF||PDF editoriale||Accesso riservato|