A metamaterial beam with inverse nonlinearity for broadband micro-vibration attenuation
نویسندگان
چکیده
• Proposed the inverse nonlinearity and applied it in a metamaterial beam. The bandgap is amplitude-depended become wider under small excitations. digital oscillator for flexible realization of various nonlinearities. Strong usually becomes noticeable when nonlinear materials or structures undergo large deformation. However, we present here nonlinearity, where inversely proportional to We demonstrate this peculiar behavior beam, which endowed with an array piezoelectric patches shunted oscillators. physically suggested by coding controllers form effective capacitor, connected analog inductor. also analytically interpret through bending stiffness It found that vibration attenuation bandwidth beam small-amplitude excitations three times larger than relatively large-amplitude Thanks programmability circuits, oscillators can be easily tuned nonlinearities, making control adaptable both penetration strength frequency bands. enlarges amplitude domains sheds lights on broadband low-intensity sound micro-vibration control.
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ژورنال
عنوان ژورنال: Mechanical Systems and Signal Processing
سال: 2021
ISSN: ['1096-1216', '0888-3270']
DOI: https://doi.org/10.1016/j.ymssp.2021.107826