A complete set of approximate, closed-form expressions, obtained with small displacements theory, for the spring constants of two kinds of serpentine springs (classic and rotated) is presented. The expressions are proposed as a tool for rapid design of microelectromechanical structures. The two designs are also studied numerically using the finite element method (FEM): analytical calculations and FEM simulations are compared. A comparison between the performances of the two designs is also briefly presented.
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Barillaro et al. (2005) studied this question.
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