Free vibrations of an uncertain energy pumping system

摘要: The aim of this paper is to study the energy pumping (the irreversible transfer from one structure, linear, another nonlinear) robustness considering uncertainties parameters a two DOF mass-spring-damper, composed subsystems, coupled by linear spring: subsystem, primary and nonlinear so-called NES (nonlinear sink). Three system will be considered as uncertain: stiffness dampers. Random variables are associated uncertain probability density functions constructed for random applying Maximum Entropy Principle. A sensitivity analysis then performed, different levels dispersion, conclusions obtained about influence in system.