Abstract: In order to improve the performance of helical springs, such as increasing the fatigue life and suppressing resonance, variable pitch angle and variable helix radius may be incorporated into ...

Abstract: This study is focused upon one example from a class of cam systems with a fluctuating rocker-arm ratio, known as “finger follower” cam systems. This class of cam systems is typically built ...

Abstract: The general dynamic equations of helical compression springs with circular wire cross section, variable pitch angle, and variable helix radius are derived. The equations are formulated by Hamilton’s ...

Abstract: Many MEM devices feature tether suspensions and it is known that the tethers induce a stiffening behavior. In this paper, we develop a model for a tether and, from it, establish several ...