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Vibrational resonance in a multistable system with position-dependent mass
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作者 t o roy-layinde K A omoteso +4 位作者 o t Kolebaje F o ogunmefun R A Fasasi J A Laoye U E Vincent 《Communications in Theoretical Physics》 SCIE CAS CSCD 2023年第11期115-134,共20页
The occurrence of vibrational resonance(VR)in a dual-frequency-driven multistable system with a spatially varying mass modelling particle with position-dependent mass(PDM)and evolving in a one-dimensional symmetric pe... The occurrence of vibrational resonance(VR)in a dual-frequency-driven multistable system with a spatially varying mass modelling particle with position-dependent mass(PDM)and evolving in a one-dimensional symmetric periodic potential has been investigated and reported in this paper.We numerically compute and analyze the response amplitude,the effects of the PDM parameters(m0,a)on the potential structure,the occurrence of VR and the bifurcation of the equilibrium points.It is shown that the PDM parameters,besides controlling VR,can induce unconventional resonance patterns through the variation of the potential well depth.The resonant states can be influenced through the cooperation of the PDM parameters and the external forcing leading the system from multiresonance state into single and double resonance states.The contributions of the fixed rest mass m0 on the VR and the PDM-induced resonance are determined by threshold conditions imposed by the magnitude of the mass nonlinear strength a. 展开更多
关键词 vibrations RESONANCE position-dependent mass multistable oscillator dualfrequency force nonlinear systems
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