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Enhancement of wave damping within metamaterials having embedded negative stiffness inclusions |
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| Institution: | 2. Department of Mechanical and Aerospace Engineering, State University of New York at Buffalo, Buffalo, NY, United States;3. Department of Mechanical and Aerospace Engineering, University of California San Diego, San Diego, CA, United States;1. Manufacturing Engineering Technology Department, College of Technological Studies, Shuwaikh 70654, Kuwait;2. Mechanical and Aerospace Engineering Department, University at Buffalo (SUNY), Buffalo, NY 14260, USA |
| Abstract: | The wave dissipation properties of layered periodic structures are modelled by FE as well as analytical approaches. A linear oscillator incorporating a negative stiffness element and having exceptional energy dissipation properties is exhibited and incorporated within the modelled structures. The structural dynamic stability of both the oscillator and the modelled waveguides is discussed and ensured. The numerical results provide evidence of a drastic increase of several orders of magnitude for the damping ratio of the flexural waves propagating within the structures. |
| Keywords: | Damping Negative stiffness Composite structures Metamaterials Wave propagation |
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