A Prediction of the Influencing Factors of Floor Vibration

Abstract

The influencing factors of floor impact sound, are characteristics such as the impact source, floor vibration reaction, and sound radiation. In this article, computerised simulation is utilised to explore the influencing factors of floor impact vibration, including slab with beam, floor thickness, compression strength of concrete, etc. Based on the finite element method (FEM), which is frequently used by structure designers in Taiwan, this research establishes an effective convenient method of predicting the impact vibration characteristics of slabs with various boundary conditions. By means of the computerised simulation and measurements in the field, the validity of the research methods is confirmed. Then, how the floor impact characteristics is influenced by various factors is investigated with different computerised models. It is shown that the floor vibration will be decreased by increasing floor thickness, and also by changing the position and the numbers of the beam. However, the vibration insulation of the floor is not improved significantly when the compression strength of concrete is increased.

Prediction and Reduction Evaluation of Floor Vibration Induced by Foot Steps

“…The major conclusions are summarised as follows. 1. In this study a numerical model for the prediction of floor impact vibration was validated, by comparing the simulated results with the measured data.…”

“…In the past, research studies were approached by the impedance method. Recently there have been studies applying FEM with an impact source [1]. Based on the previous research efforts, this paper reports a study of the characteristics of floor vibration and the micro-vibration through FEM numerical simulation techniques and experiments.…”