scholarly journals NUMERICAL ANALYSIS TECHNIQUE USING THE STATISTICAL ENERGY ANALYSIS METHOD CONCERNING THE BLASTING NOISE REDUCTION BY THE SOUND INSULATION DOOR USED IN TUNNEL CONSTRUCTIONS

2011 ◽  
Vol 67 (1) ◽  
pp. 11-20
Author(s):  
Shigeki ISHIDA ◽  
Atsuo MORI ◽  
Masato SHINJI
Keyword(s):  
Numerical Analysis ◽  
Noise Reduction ◽  
Energy Analysis ◽  
Sound Insulation ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Analysis Technique

scholarly journals Application of Statistical Energy Analysis Method for modelling sound insulation of baffles

2018 ◽  
Vol 19 (12) ◽  
pp. 106-109
Author(s):  
Krzysztof Kosała ◽  
Leszek Majkut ◽  
Ryszard Olszewski
Keyword(s):  
Statistical Method ◽  
Laboratory Tests ◽  
Energy Analysis ◽  
Experimental Tests ◽  
Calculation Model ◽  
Frequency Characteristics ◽  
Sound Insulation ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Airborne Sound

The article presents the model of sound insulation of single homo-geneous baffles based on the Statistical Method of Energy Analysis. The determined frequency characteristics of airborne sound insulation of the baffles obtained from the calculation model with the results of experimental tests were compared. Calculations using the Statistical Method of Energy Analysis and laboratory tests were performed for plates made of plexiglass and acrylic.

Road Noise Modelling Using Statistical Energy Analysis Method

1995 ◽  
Author(s):  
Bangyi Dong ◽  
Martin Green ◽  
Mark Voutyras ◽  
Paul Bremner ◽  
Peter Kasper
Keyword(s):  
Energy Analysis ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Road Noise

Research on the Prediction of Impact Sound Insulation to a Homogeneous Wall

2015 ◽  
Vol 744-746 ◽  
pp. 1593-1596
Author(s):  
Shang You Wei ◽  
Xian Feng Huang ◽  
Zhi Xiang Zhuang ◽  
Jun Xin Lan
Keyword(s):  
Energy Analysis ◽  
Sound Transmission ◽  
Sound Insulation ◽  
Statistical Energy Analysis ◽  
Analysis Framework ◽  
Mechanism Of Impact ◽  
Sound Reduction ◽  
The Impact ◽  
Insulating Properties ◽  
Reduction Index

In this paper, a theoretical model to evaluate impact sound transmission through a homogeneous wall is proposed. The model which is based on the Statistical Energy Analysis framework exhibits a system with room-wall-room. For the purpose to explore the mechanism of impact sound transmission through a wall, the impact sound reduction index between two rooms are predicted. Meanwhile, the variation of impact sound reduction index with the walls properties are also taken into account. The results reveal that the density, elastic modulus and thickness of a homogeneous wall have diverse effects on its impact sound insulation and can be chosen adequately to achieve ideal insulation values.It provides an approach to optimize impact sound insulating properties of the walls.

Safety of fall arrest systems: A numerical and experimental study

2000 ◽  
Vol 214 (10) ◽  
pp. 1221-1233 ◽  
Author(s):  
F Drabble ◽  
D J Brookfield
Keyword(s):  
Numerical Analysis ◽  
Energy Balance ◽  
Experimental Tests ◽  
Balance Method ◽  
Restraint System ◽  
Analysis Method ◽  
Energy Balance Method ◽  
Analysis Technique ◽  
Fall Arrest ◽  
Better Than

Workers in elevated positions must be protected from falling or from the hazardous consequences of falls. Protection from falling can include fences, guard rails, etc., or a restraint system preventing the workers from reaching any point from which they can fall. However, protection from falling can be impractical and in such situations a fall arrest system (FAS) must be provided such that the fall does not cause injury to the worker or to others. This paper surveys prior work on the analysis of FASs including the energy balance method historically used. This method is limited to simple FASs where only one worker may fall. A novel numerical analysis technique for predicting the forces occurring in each component of an FAS during a fall is then described. Results from the numerical analysis are compared with results from experimental tests and with those from the energy balance method. It is shown that the numerical analysis technique predicts forces to within better than approximately 7 per cent, the method being conservative, whereas the errors shown by the energy balance method exceed 26 per cent. The new analysis method is also shown to be applicable to multiple falls.

Prediction on Coincidence Effect of Sound Insulation of a Wall

2011 ◽  
Vol 99-100 ◽  
pp. 354-357
Author(s):  
Xian Feng Huang ◽  
Jun Liu ◽  
Yan Yang
Keyword(s):  
Building Materials ◽  
Energy Analysis ◽  
Sound Insulation ◽  
Light Weight ◽  
Statistical Energy Analysis ◽  
Frequency Range ◽  
Single Leaf ◽  
Comparison Results ◽  
Coincidence Effect ◽  
Sound Environment

Coincidence effect which occurs in a certain frequency range will impairs the sound insulation of walls. For the purpose to predict the phenomenon of coincidence effect that is unlikely predicted theoretically by the mass law, the Statistical Energy Analysis (SEA) theory are adopted in studying coincidence effect of sound insulation of the light weight single-leaf wall. The comparison among predicted by SEA, by mass law and measured was performed. Therefore, the comparison results show that sound insulation prediction by SEA is more precise and agrees with the measured date. Moreover, the coincidence effect and its effect on sound insulation were predicted by SEA. Eventually, it is likely to select appropriate building materials and configuration to achieve a better sound environment theoretically.

Gas Turbine Acoustic Enclosure Design by the Statistical Energy Analysis Method

1995 ◽  
Vol 117 (3) ◽  
pp. 554-556
Author(s):  
L. K. H. Lu ◽  
M. Mitchell
Keyword(s):  
Gas Turbine ◽  
Energy Analysis ◽  
Transmission Loss ◽  
Closed Form Solution ◽  
Complex Problem ◽  
Form Solution ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Multiple Components ◽  
Practical Design

Acoustic enclosure design is a complex problem that involves the interaction of multiple components. Yet the present conventional approach uses a two-dimensional closed-form solution to evaluate transmission loss of acoustic wall. In this paper, Statistical Energy Analysis (SEA) was first studied for simple cases of radiation efficiency, transmission loss, and flanking path calculations. The effectiveness of the SEA method for complex systems was then demonstrated through a practical design application to gas turbine enclosure. It was found that SEA was a useful tool for gas turbine acoustic enclosure design.

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