标题：Aeroacoustic performance evaluation of milling cutters based on the flow field on the cutter surface
作者：Ji, C. H.; Liu, Z. Q.
通讯作者：Ji, C H
作者机构：[Ji, C. H.; Liu, Z. Q.] Shandong Univ, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China.
会议名称：4th International Conference on High Speed Machining
会议日期：OCT 09-10, 2010
来源：HIGH SPEED MACHINING
关键词：Aeroacoustic noise; Face milling cutter; Numerical simulation; Spectra; analysis
摘要：Many workers all over the world suffer significant hearing loss as well as psychological and physical stress as a result of exposure to high levels of aeroacoustic noise. Dipole sources are the major noise sources in aeroacoustic noise generation in rotating face milling cutters. A noise model based on the Ffowcs Williams-Hawkings Equation is used to predict aeroacoustic noise; the noise predicted was 2.5dB less than the experimental observations. Flow field of cutter surface was numerically simulated by the resolution of the Navier-Stokes equations (CFD) and five zones on cutter surface were founded to be the important noise source. The broadband noise spreads over a broad range of frequencies and contributes significantly to overall noise, but the discrete noise at the rotational frequency is usually higher and more detrimental to the body.