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http://dx.doi.org/10.5050/KSNVE.2014.24.6.483

Prediction of Concrete Slab Acceleration and Floor Impact Noise Using Frequency Response Function  

Mun, Dae-Ho (Department of Architecture, Seoul National University)
Park, Hong-Gun (Department of Architecture, Seoul National University)
Hwang, Jae-Seung (School of Architecture, Chonnam National University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.6, 2014 , pp. 483-492 More about this Journal
Abstract
Uncomfortable feelings of occupants by indoor floor impact noise in a residential building are not accurately represented by the floor impact noise from a standard impact source. It is due to the characteristics of standard impact sources, which are different from the impact forces produced by occupants. It varies significantly by impact source, and it is not easy to be replicated for testing. As a result, the indoor floor impact noise under different acoustic conditions cannot be directly compared. Using frequency response function(FRF), which represents the input-output relationships of a dynamic system, it is possible to examine the characteristics of the system. Especially, FRF can predict the response of a linear dynamic system subjected to various excitation. To determine the relationship between impact force and the corresponding response of dynamic system in residential building, the acceleration response of a concrete slab and the floor impact noise in the living room, produced by bang-machine and rubber-ball excitation, were measured. The test results are compared to the estimates based on FRF and impact force spectrum.
Keywords
Frequency Response Function; Heavy-weight Floor Impact Noise; System Analysis; Dynamic Characteristic; Floating Floor;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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