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이경현(Kyoung-Hyun Lee),한형석(Hyung-Suk Han),박성호(Sungho Park),전수홍(Suhong Jeon) 한국소음진동공학회 2016 한국소음진동공학회 학술대회논문집 Vol.2016 No.4
Nonlinear normal modes(NNMs) is a periodic solution of autonomous nonlinear dynamic systems. Periodic solution of nonlinear system can be calculated by numerical methods, starting from the linear normal modes near the fixed point. In this study iteration of the solution is presented by multiple shooting method and continuation is presented by pseudo-arclength continuation method. The stability of the NNMs are analyzed using Floquet multipliers, and bifurcation points are calculated using indirect method. Proposed analyses are applied to nonlinear spring-mass system.