TY - GEN
T1 - Finite element analysis of a phononic crystal at gigahertz frequencies
AU - Alaie, Seyedhamidreza
AU - Mousavi, Arash K.
AU - Su, Mehmet
AU - Leseman, Zayd C.
PY - 2010
Y1 - 2010
N2 - In this paper, the vibrational behavior of a phononic crystal is studied at gigahertz frequencies. The phononic crystal is comprised of a silicon slab with tungsten inclusions filtering out waves within the frequency range of 0.7 GHz to 1.1 GHz. Two-dimensional harmonic finite element analysis (FEA) is employed to model the transmission of stresswaves launched from a transmitter and passing through the crystal. The numerical results are compared with another prevalent numerical method, finite difference time domain (FDTD), as well as with experimental results. Comparisons made between the numerical approaches and experimental approach, show that the harmonic finite element analysis agrees well with experiment and potentially can explain the experimental results more precisely than FDTD. This more favorable comparison is attributed to a resonance that occurs between the transmitter and the phononic crystal.
AB - In this paper, the vibrational behavior of a phononic crystal is studied at gigahertz frequencies. The phononic crystal is comprised of a silicon slab with tungsten inclusions filtering out waves within the frequency range of 0.7 GHz to 1.1 GHz. Two-dimensional harmonic finite element analysis (FEA) is employed to model the transmission of stresswaves launched from a transmitter and passing through the crystal. The numerical results are compared with another prevalent numerical method, finite difference time domain (FDTD), as well as with experimental results. Comparisons made between the numerical approaches and experimental approach, show that the harmonic finite element analysis agrees well with experiment and potentially can explain the experimental results more precisely than FDTD. This more favorable comparison is attributed to a resonance that occurs between the transmitter and the phononic crystal.
UR - https://www.scopus.com/pages/publications/84881470512
U2 - 10.1115/IMECE2010-39005
DO - 10.1115/IMECE2010-39005
M3 - Conference contribution
AN - SCOPUS:84881470512
SN - 9780791844502
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 389
EP - 393
BT - Sound, Vibration and Design
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Y2 - 12 November 2010 through 18 November 2010
ER -