円板状工具から放射される風切音に関する研究 : カルマンうずモデルによる風切音の予測

概要

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The prediction of aerodynamic noise radiation from a circular cutting tool with a columnar tooth model is made. The noise level is calculated by a theoretical expression with the Karman Vortex model. Particularly, the change in the noise level with tooth length and tooth diameter is calculated. In the change of tooth numbers and tooth diameter, experimental values agreed qualitatively with the theoretical results. In the change of tooth length l_x, a noise contribution rate Λ is adopted to express the transformation rate of fluctuated vortex circulation around the tooth into the sound pressure. By applying Λ=1.26l_x^<-0.25> to the theoretical equation, the calculated results agreed with experimental values of the noise level within 2 dB difference.
一般社団法人日本機械学会の論文
1989-06-25