Size and topology optimization of inertial amplification induced phononic band gap structures
ASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017, Florida, Amerika Birleşik Devletleri, 3 - 09 Kasım 2017, cilt.13, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 13
- Doi Numarası: 10.1115/imece2017-71342
- Basıldığı Şehir: Florida
- Basıldığı Ülke: Amerika Birleşik Devletleri
- Kırklareli Üniversitesi Adresli: Hayır
Özet
In this study, inertial amplification induced phononic band gaps are attained by performing structural optimization on a compliant unit cell mechanism of a one-dimensional periodic structure. First of all, stop band characteristics of the lumped parameter model of the unit cell mechanism is discussed. Next, the distributed parameter model of the compliant unit cell is presented. In order to obtain wide and deep inertial amplification induced stop bands, both size and topology optimization methods are utilized considering the distributed parameter model of the unit cell mechanism. The band gap characteristics of the infinite periodic size and topologically optimized mechanisms are compared. Moreover, vibration transmissibility of the finite periodic size and topologically optimized mechanisms are calculated and the effect of number of unit cells is discussed. Finally, a parametric study is carried out to demonstrate the effect of topology optimization design space volume fraction on the band gap limits.