J uicker jr theory of machines and mechanisms 2nd

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Unformatted text preview: Elements (TRANS109) 2-D Structural Solid Elements (PLANE42) 2-D Point-to-Point Contact Elements (CONTAC12) Input Listing: vm236.dat Test Case A beam of length L = 80 µm at a height T = 0.5 µm is suspended 0.7 µm above a ground plane and is clamped at either end. Using this beam, model the hysteresis (pull-in and release behaviors) when it is placed under electrostatic load. Figure 236.1 Beam Under Electrostatic Load 40 µ m .5 µ m .7 µm + _ V(t) Beam at beginning and unloading. .1 µm + _ V(pi) ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–553 VM236 Beam at pull-in voltage. Model the hysteresis (pull-in and release behaviors) of a structural beam under electrostatic load. Material Properties EX = 169E3 NUXY = 0.25 PERX = 1 MU = 0 Geometric Properties Beam Length = 80 microns Beam Height = 0.5 microns Gap = 0.7 microns Loading V(1) = 11.0V V(2) = 14.5V V(3) = 18.0V Analysis Assumptions and Modeling Notes Using symmetry at a length L=40 µm, the solid beam is modeled with quad shape...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.

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