By Nicolae Lobontiu
Flexure hinges carry a number of benefits over classical rotation joints, together with no friction losses, no use for lubrication, no hysteresis, compactness, potential to be used in small-scale functions, ease of fabrication, nearly no meeting, and no required upkeep. Compliant Mechanisms: layout of Flexure Hinges presents functional solutions to the current and destiny wishes of effective layout, research, and optimization of units that contain flexure hinges. With a hugely unique process the text:Discusses new and classical sorts of flexure hinges (single-, - and multiple-axis) for 2- and third-dimensional applicationsAddresses a variety of commercial purposes, together with micro- and nano-scale mechanismsQuantifies flexibility, precision of rotation, sensitivity to parasitic loading, power intake, and rigidity barriers via closed-form compliance equationsOffers a unitary presentation of person flexure hinges as fully-compliant participants through closed-form compliance (spring premiums) equationsFully defines the lumped-parameter compliance, inertia and damping houses of flexure hinges Develops a finite aspect method of compliant mechanisms through giving the fundamental formula of latest flexure hinge line elementsIncorporates extra complicated issues devoted to flexure hinges together with huge deformations, buckling, torsion, composite flexures, form optimization and thermal effectsCompliant Mechanisms: layout of Flexure Hinges presents functional solutions and instructions to the wishes of successfully designing, studying, and optimizing units that come with flexure hinges. It comprises ready-to-use plots and straightforward equations describing numerous flexure varieties for the pro that wishes quickly suggestions to present purposes. The publication additionally presents self-contained, easy-to-apply mathematical instruments that supply enough counsel for real-time challenge fixing of extra purposes.
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Extra resources for Compliant Mechanisms: Design of Flexure Hinges
11 Force-deflection characteristics in the linear and nonlinear ranges for a ductile and a brittle material, respectively. It should be noted that the flexure hinges are approached in this book primarily as members that are subjected to small-displacements. This assumption stems from the reality that in so many engineering applications the flexure hinges really behave according to this model, which enables utilization of the linear (or first-order) bending theory and derivation of the spring rates for various flexure configurations.
Design of compliant mechanisms: applications to MEMS, Analog Integrated Circuits and Signal Processing, 29(1–2), 7, 2001. 1 Introduction This chapter is dedicated to defining a range of flexure hinge configurations based on their compliant characteristics. Several new flexure geometries are introduced here alongside the presentation of other known types; all of them are characterized by closed-form compliance equations that are derived analytically in a generic form and then specific expressions are given for all individual flexures.
A generic finite-element formulation is given for the three categories of flexure hinges mentioned above in terms of defining the elemental stiffness, mass, and damping matrices. Explicit forms of these elemental matrices are derived for single-axis corner-filleted and constant cross-section flexure hinges. These equations can simply be implemented in commercially available finite-element software and further utilized to perform static/dynamic analyses. Another chapter is dedicated to more advanced problems involving the behavior of flexure hinges.
Compliant Mechanisms: Design of Flexure Hinges by Nicolae Lobontiu