good Compliant Mechanisms-Design of Flexure Hinges


This book is dedicated to flexure hinges, which are the main constituents of

compliant mechanisms. The flexure hinge, alternatively called flexural pivot,

consists of a flexible, slender region between two rigid parts that must

undergo limited relative rotation in a mechanism (which will be called


) due to the presence of at least one flexure hinge. Under the combined

action of external loading and actuation, the flexure hinge bends and thus

produces the relative rotation between the adjacent members. Being monolithic

with the rest of the mechanism for the vast majority of applications, a

flexure hinge offers several advantages over classical rotation joints, such as

no friction losses, no need for lubrication, no hysteresis, compactness, capacity

to be utilized in small-scale applications, ease of fabrication, virtually no

assembly, and no required maintenance.


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