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변속기 케이스에서 발생하는 방사소음 해석 및 저감 설계
정성영(Jeong, Seong-Young),오하영(Oh, Ha-Yeong),박준홍(Park, Jun-Hong),박경진(Park, Gyung-Jin),이현아(Lee, Hyun-Ah),최중선(Choi, Joong-Sun) 한국소음진동공학회 2010 한국소음진동공학회 논문집 Vol.20 No.6
This article presents a method to calculate the sound radiation of transmission gearbox housing by using Helmholtz integral. Rayleigh integral is used to verify the method. Half-space radiation is considered because the actual gearbox housing is on hard place like concrete. For optimization, orthogonal array is used as a fractional factorial design method. Sound Radiation is calculated with simple source like plate and sphere shape, then actual gearbox BEM model is applied to the method.
이재봉(Bong-Jae Lee),박원찬(Weon-Chan Park),김우섭(woo-Seob Kim),정성영(Seong-Yeong Jeong) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
While road traffic of sharp rise of an international oil price and capital Seoul reaches to critical point, and a use passenger drives recklessly on the subway which is a cradle of public transportation, the depths analyzes an electric power feed system regarding a ground wealth electric car line of the subway Line 2 East Section which is a long distance (Seongsu ~ Gangbyeon), and future, electric power supply Feeder Distribution Center prepares to Operational Headway shortening along an ATO signal method change by feeder increase supplement, and ensure safety to an electric power supply system, and will solve inconvenience of safe operation and use passenger.