Abstract
The problem of large deflections is solved for a pressure sensing element in the form of a fixed-edge rectangular membrane with an aspect ratio of 1, 1.5, 2, or 3. Analytical formulas are derived for the deflection, allowing for midplane deformation. A manageable model is constructed for calculating the components of strain and stress. The results are found to be in good agreement with data obtained by the finite-element method. The magnitude of stress nonlinearity is calculated as a function of coordinates for each surface of the membrane.
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Gridchin, V.A., Lubimsky, V.M. & Shaporin, A.V. Nonlinear Response of a Rectangular Membrane Sensing Element. Russian Microelectronics 32, 233–242 (2003). https://doi.org/10.1023/A:1024575515798
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DOI: https://doi.org/10.1023/A:1024575515798