Abstract
In the present work, sound power radiation response of a clamped rectangular plate with attached discrete masses and discrete patches is analysed. Four different thickness variations with taper ratios (HX) 0.3, 0.6 and 0.9 are considered. Rayleigh integral is used to predict the sound radiation characteristics. Plate with four patches with linearly increasing – decreasing thickness variation at taper ratio (HX = 0.3) is most effective in achieving the minimum peak sound power level. With this configuration (linearly increasing – decreasing), a wider choice of taper ratio of (0.15-0.45) is possible for obtaining minimum peak sound power level for all the cases considered.
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