A probabilistic model for predicting the uncertainties of the humid stiction phenomenon on hard materials

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS

卷:289

Article

Hoang, T. -V.¹  Wu, L.¹  Paquay, S.²  Obreja, A. C.³  Voicu, R. C.³  Mueller, R.³  Golinval, J. -C.¹  Noels, L.¹ 

[1] Univ Liege, Dept Aerosp & Mech Engn, B-4000 Liege, Belgium

[2] Open Engn SA, B-4031 Liege, Angleur, Belgium

[3] IMT Bucharest, Natl Inst R&D Microtechnol, Bucharest 077190, Romania

关键词: Stiction;    Capillary force;    Surface generation;    Hertz model;    DMT model;    GW approach;   

DOI  :  10.1016/j.cam.2015.02.022

来源: Elsevier

【 摘 要 】

Stiction is a major failure in microelectromechanical system (MEMS) devices in which two contacting surfaces can remain stuck together because of the adhesive forces. Due to the difference between the surfaces roughness and the adhesive force range, the real contact areas are usually smaller than the apparent one, resulting in a scatter in the adhesive forces. Consequently, the stiction is an uncertain phenomenon. In this work, we develop a probabilistic model to predict the uncertainties of stiction due to the capillary forces acting on stiff materials. This model contains two levels: at the deterministic level, the model can predict the pull-out adhesive contact forces for a given surface topology; at the probabilistic level, the model generates independent identically distributed surfaces on which the deterministic solution can be applied to evaluate the uncertainties related to the stiction phenomenon. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free