Open AccessOn the absence of some resonance modes in acoustic scattering by spherical scatt erers in isotropic elastic media
Author(s) -
RuiXin Wu,
Yaojun Wang
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.1948
Subject(s) - resonance (particle physics) , physics , scattering , isotropy , spheres , zero (linguistics) , plane (geometry) , transverse plane , acoustic resonance , plane wave , matrix (chemical analysis) , optics , atomic physics , geometry , materials science , mathematics , linguistics , philosophy , structural engineering , astronomy , engineering , composite material
Resonance scattering by iron spheres in plaxiglass matrix is investigated numer ically. Based on the analysis of the zero and singular points of the scattered l ongitudinal and transverse wave coefficients, the absence of some resonance mode s is found to appear only in the scattered longitudinal wave modes of the lowest order. The absence of some resonance modes results from the fact that the zero points of the numerator and denominator of scattered longitudinal wave coefficie nts are located at the same positions in the complex frequency plane.