STUDY ON VERIFICATION AND APPLICATION OF SIMULATION TECHNIQUE FOR THE FLOOR IMPACT SOUND BASED ON BOTH FEM FLOOR VIBRATION ANALYSIS AND BEM SOUND FIELD ANALYSIS

摘要

This paper presents some discussion of applications of simulation technique for the floor impact sound based on both FEM floor vibration analysis and BEM sound field Analysis.On experimental site tests by using multi-stories residential building, vibrating characteristics of floor structure and normal acoustic impedance of sound aborbing boundaries are studied to model boundary conditions of FEM and BEM procedures. The accuracy and apropriateness of the simulation is discussed by comparing with experimental results. As another application, improving effects on the floor impact sound by floor vibration damping and sound absorbing capacity are studied through parametric omputation.