S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Architecture and Architectural Engineering (건축학과) Journal Papers (저널논문_건축학과)
점탄성재료가 결합된 PC 슬래브의 중량충격음 저감에 관한 수치해석 연구
Numerical Study on the Control of Heavy-weight Floor Impact Noise for PC Slab Coupled with Viscoelastic Material
- 박홍근; 황재승; 송진규; 홍건호
- Issue Date
- 한국소음진동공학회 논문집, 제18권, 제5호, pp. 533-540
- PC slab; viscoelastic material; heavy weight impact floor noise control; substructuring; sound power; numerical analysis; PC 슬래브; 점탄성소개; 중량충격음 저감; 부분구조합성법; 음파워; 수치해석
- In this study, a new slab system where a part of precast slab is connected each other by viscoelastic material is proposed and numerical analysis is performed to evaluate the effect of the connection between the material and PC slab on the vibration and noise control. Substructuring is introduced to develop the equation of motion for the slab system. In addition, the optimal properties of viscoelastic material are investigated. For the performance evaluation of the new slab system, the sound power and acceleration responses of the slab are compared with those of two way slab and one way slab, respectively. Numerical analysis results show that the sound power of the new slab system can be reduced by viscoelastic material significantly.