Targeted energy transfer in a 2-DOF mechanical system coupled to a non-linear energy sink with varying stiffness. (September 2017)

• Record Type: Journal Article
• Authors: Lamarque, Claude-Henri; Thouverez, F; Rozier, B; Dimitrijevic, Z
• Is Part Of: Journal of vibration and control. Volume 23:Number 16(2017)
• Page Start: 2567
• Page End: 2577
• Publication Date: 2017-09
• Subjects: Targeted energy transfer (TET) -- non-linear energy sink (NES) -- varying stiffness -- fixed point -- singular point and bifurcation -- periodic solution -- relaxation -- strongly modulated response (SMR); Vibration -- Periodicals; Damping (Mechanics) -- Periodicals; 620.3
• DOI: 10.1177/1077546315618540
• Languages: English
• ISSNs: 1077-5463

Abstract

The dynamical behavior of a non-linear mechanical system with two degrees of freedom (DOFs) during free and forced excitations is studied analytically and numerically. The non-linearity of the system is represented intentionally by a smooth non-linear simple function with periodically varying stiffness around a constant value for the sake of practical investigations. Analysis of the system leads to a method that could be used to design the non-linear energy sink (NES) so that the behavior of the system during relaxation and its strongly modulated response (SMR) could be improved versus the constant stiffness configuration.