다수의 어린이 뛰어다님을 재현하는 시뮬레이터의 제작 및  충격음 레벨 특성 (Simulator Development for Replicating the Movement of Multiple Children Running and Impact Sound Level Characteristics)

서지정보

· 발행기관 : 한국소음진동공학회
· 수록지 정보 : 한국소음진동공학회논문집 / 34권 / 3호 / 312 ~ 319페이지
· 저자명 : 송민정, 김수홍, 류종관, 박현구

초록

To replicate scenarios involving multiple children simultaneously running, simulators for one, two, and three individuals were developed. Experiments were conducted under various conditions to examine changes in floor impact noise levels. For a rotating body with a diameter of 80cm, the levels ranged from 43.3dB to 38.9dB. A rotating body with a diameter of 90cm showed levels ranging from 44.5dB to approximately 41.7dB. In the case of a rotating body with a diameter of 100cm, the levels ranged from 44.3dB to 40.6dB. The relationship between the first key variable of rotation speed and the level for each experimental condition showed an R2 value of at least 0.83, indicating a strong correlation between the rotation speed and simulator level values, thereby establishing rotation speed as a significant variable. Additionally, when a single rotating body was installed in the simulator, the correlation coefficient for level changes based on weight was approximately 0.69. However, with two or three rotating bodies installed, the correlation between level changes and weight diminished. Results from multiple regression analyses revealed that both the rotation speed and weight of the simulator had a P value of less than 0.05, indicating statistically significant conditions affecting floor impact noise levels. Comparing with real-life situations of children jumping, the operation of the simulator may be correlated with the speed and posture of children jumping.

영어초록

To replicate scenarios involving multiple children simultaneously running, simulators for one, two, and three individuals were developed. Experiments were conducted under various conditions to examine changes in floor impact noise levels. For a rotating body with a diameter of 80cm, the levels ranged from 43.3dB to 38.9dB. A rotating body with a diameter of 90cm showed levels ranging from 44.5dB to approximately 41.7dB. In the case of a rotating body with a diameter of 100cm, the levels ranged from 44.3dB to 40.6dB. The relationship between the first key variable of rotation speed and the level for each experimental condition showed an R2 value of at least 0.83, indicating a strong correlation between the rotation speed and simulator level values, thereby establishing rotation speed as a significant variable. Additionally, when a single rotating body was installed in the simulator, the correlation coefficient for level changes based on weight was approximately 0.69. However, with two or three rotating bodies installed, the correlation between level changes and weight diminished. Results from multiple regression analyses revealed that both the rotation speed and weight of the simulator had a P value of less than 0.05, indicating statistically significant conditions affecting floor impact noise levels. Comparing with real-life situations of children jumping, the operation of the simulator may be correlated with the speed and posture of children jumping.

참고자료

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