Novel locally resonant architected materials withtunable stop-babds
محل انتشار: دوازدهمین کنفرانس بین المللی آکوستیک و ارتعاشات
سال انتشار: 1401
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 145
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شناسه ملی سند علمی:
ISAV12_081
تاریخ نمایه سازی: 9 اسفند 1401
چکیده مقاله:
Due to the application of architected materials in different aspects of acoustic and structuralengineering, a great deal of effort has been devoted to study wave propagation in such structures.In the current manuscript, the effect of adding auxiliary resonators on the wave attenuationperformance of square and triangular architected structures is investigated. The structuresare modelled using finite element method and the wave propagation analysis is performedusing the Bloch’s theorem. Moreover the effect of resonator orientation on the frequencyrange and width of the stop-bands is also investigated. It is found that using auxiliaryresonators can lead to stop-bands of local resonance (LR) nature in the frequency ranges, inwhich, the conventional structures are unable to attenuate wave propagation. Moreover,changing the orientation of the resonators, the dispersion curves can be altered and the stopbandscan be tuned. The results of the current manuscript can introduce resonator orientationas another degree of freedom in designing architected materials with tunable wave attenuation performance
کلیدواژه ها:
نویسندگان
Soroush Sepehri
Ph.D. candidate, School of Mechanical Engineering, University of Tehran, Tehran,iran
Mahmoud Mosavi Mashhadi
Professor, School of Mechanical Engineering, University of Tehran, Tehran,iran
Mir Masoud Seyed Fakhrabadi
Assisstant Professor, School of Mechanical Engineering, University of Tehran tehran iran.