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contributor authorMedina, Lior
date accessioned2023-11-29T18:52:30Z
date available2023-11-29T18:52:30Z
date copyright12/2/2022 12:00:00 AM
date issued12/2/2022 12:00:00 AM
date issued2022-12-02
identifier issn0021-8936
identifier otherjam_90_3_031002.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294432
description abstractThe effects of membrane load on the axisymmetric bistable behavior of circular curved micro plates are studied via an axisymmetric reduced order (RO) model, incorporating radial prestress. The model is based on Kirchhoff’s hypothesis and Föppl-von-Kármán’s kinematics. The model is first validated for a “mechanical” (displacement-independent) load, against an RO model with 20 degrees-of-freedom (DOF), a finite differences (FD) solution, and finally, a finite elements (FE) model, serving as the reference. All solutions implement the “Riks” continuation method to track unstable branches, which can swerve in a complex form due to the presence of higher buckling modes. A convergence study is carried out for the snap-through location and load, as well as for the critical elevation and prestress required for bistability. Based on the validated results of the mechanical analysis, the reliability of the model for predicting the effect of prestress on the plate behavior under nonlinear (displacement-dependent) electrostatic load is then investigated while using FD as the reference. The study furnishes an expended RO model for curved plates, which includes the effect of prestress. The resulting model can further be used to estimate the value of residual membrane load present in electrostatically actuated curved plates, as well as predict the threshold for bistability.
publisherThe American Society of Mechanical Engineers (ASME)
titleEffect of Membrane Load on the Stability of an Electrostatically Actuated Initially Curved Circular Micro Plate
typeJournal Paper
journal volume90
journal issue3
journal titleJournal of Applied Mechanics
identifier doi10.1115/1.4056059
journal fristpage31002-1
journal lastpage31002-10
page10
treeJournal of Applied Mechanics:;2022:;volume( 090 ):;issue: 003
contenttypeFulltext


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