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준정적 해석을 이용한 고속 열차의 순간 환경소음 시뮬레이션
조대승(Dae-Seung Cho),김진형(Jin-Hyeong Kim),최성원(Sung-Won Choi),정홍구(Hong-Gu Chung),성혜민(Hye-Min Sung),장승호(Seungho Jang),고효인(Hyo-in Koh) 한국소음진동공학회 2012 한국소음진동공학회 학술대회논문집 Vol.2012 No.10
An instantaneous environmental noise simulation method emitted by a moving high-speed train by quasi-stationary analysis is proposed in this study. In the method, the propagation attenuations from stationary point sources on segmented railways to a receiver are calculated using a general purpose environmental noise prediction program ENPro based on the ISO 9613-2 method. Then, the instantaneous environmental noise at a receiver due to a moving high-speed train considering convection effect is evaluated with the information on the propagation attenuations from the instantaneous train location to the receiver and the sound power levels and directivity of stationary point sources evaluated by German Schall 03 (2006). To demonstrate the validity of proposed method, simulated and measured time history of instantaneous noise for KTX-I and KTX-II on running are compared and the results show that the method can be utilized for the train noise source identification as well as the simulation of instantaneous environmental noise emitted by a high-speed train.
준정적 해석을 이용한 고속 열차의 순간 환경소음 시뮬레이션
조대승(Cho, Dae-Seung),김진형(Kim, Jin-Hyeong),최성원(Choi, Sung-Won),정홍구(Chung, Hong-Gu),성혜민(Sung, Hye-Min),장승호(Jang, Seung-Ho),고효인(Koh, Hyo-In) 한국소음진동공학회 2012 한국소음진동공학회 논문집 Vol.22 No.10
An instantaneous environmental noise simulation method emitted by a moving high-speed train by quasi-stationary analysis is proposed in this study. In the method, the propagation attenuations from stationary point sources on segmented railways to a receiver are calculated using a general purpose environmental noise prediction program ENPro based on the ISO 9613-2 method. Then, the instantaneous environmental noise at a receiver due to a moving high-speed train considering convection effect is evaluated with the information on the propagation attenuations from the instantaneous train location to the receiver and the sound power levels and directivity of stationary point sources evaluated by German Schall 03 (2006). To demonstrate the validity of proposed method, simulated and measured time history of instantaneous noise for KTX-I and KTX-II on running are compared and the results show that the method can be utilized for the train noise source identification as well as the simulation of instantaneous environmental noise emitted by a high-speed train.