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http://dx.doi.org/10.5050/KSNVE.2014.24.5.390

An Analysis of Characteristics of Floor Dynamic Properties and Bang-machine Impact Force on Floating Floor Using System Analysis  

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)
Hong, Geon-Ho (Department of Architecture Engineering, Hoseo University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.5, 2014 , pp. 390-398 More about this Journal
Abstract
Heavy-weight floor impact noise is directly related to the impact source and floor vibration property. Dynamic properties of the standard floating floor that is used in Korea was investigated using accelerance, acceleration energy spectral density(ESD), and structural modal test. In the standard floating floor, natural frequency was decreased by the finishing mortar mass and the damping ratio was increased. Bang-machine force spectrum acting on the concrete slab can be calculated using inverse system analysis. Impact force acting on concrete slab is changed by interaction of finishing mortar and resilient material. The amplitude of the bang-machine force spectrum was amplified in low frequency range(below 100 Hz), and over 100 Hz was decreased. Changed force spectrum influence to the response of structure vibration, so the heavy-weight floor impact noise level was changed.
Keywords
Frequency Response Function; System Analysis; Iverse System Analysis; Dynamic Characteristic; Floating Floor; Stnadard Floating Floor; Heavy-weight Floor Impact Noise;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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