For the sound insulation of a double-panel partition,the stud between two leaves creates a vibration transmission path,which can often be more critical and more important in the mid-frequency range than the airborne p...For the sound insulation of a double-panel partition,the stud between two leaves creates a vibration transmission path,which can often be more critical and more important in the mid-frequency range than the airborne path through the cavity.Owing to the fact that partitions with light-weight steel studs are commonly used in building construction,studies on the sound insulation effect of such studs have been conducted.Especially,a model,initiated by Gu and Wang(1983),has been widely studied during the past decades.In the model,the steel stud is considered as an elastic spring with its cross-section stiffness in the sound insulation index prediction of such a partition.Experimental results of different stud profiles have been reported from different testing laboratories and more information has been gained to understand the stiffness effect of the stud on the sound insulation of the double-leaf partitions.In this paper,the authors have given this subject a thorough review and have concluded that a critical problem needs further investigation on the determination of the stiffness of the connecting elements in the double-leaf partitions.展开更多
In additional to the screw connection affecting the sound transmission characteristics of the panel-stud partition,the spacing of screws is also considered as a factor in predicting the sound insulation of the partiti...In additional to the screw connection affecting the sound transmission characteristics of the panel-stud partition,the spacing of screws is also considered as a factor in predicting the sound insulation of the partition.It can be modeled either as a series of independent point connections,or as a line connection depending on the screw spacing.For small screw spacing,the connection between panel and stud can be treated as a line connection,from which a higher sound transmission effect can be achieved.Whilst for a larger screw spacing,it can be treated as an independent point connection,from which a lesser sound transmission through the partition can be achieved accordingly.The distinction between these two kinds of connection is also related to the frequency.Usually,half bending wavelength of a panel will be treated as a distinct frequency.Experimental results of double leaf partition with diverse screw spacing significantly demonstrated their influences on sound reduction.Some prediction methods for partitions with different screw spacing are also reviewed in this paper.It should be noted that the impact of screw spacing effecting on the sound insulation of partitions of wood stud and light-weight metal stud is different.展开更多
文摘For the sound insulation of a double-panel partition,the stud between two leaves creates a vibration transmission path,which can often be more critical and more important in the mid-frequency range than the airborne path through the cavity.Owing to the fact that partitions with light-weight steel studs are commonly used in building construction,studies on the sound insulation effect of such studs have been conducted.Especially,a model,initiated by Gu and Wang(1983),has been widely studied during the past decades.In the model,the steel stud is considered as an elastic spring with its cross-section stiffness in the sound insulation index prediction of such a partition.Experimental results of different stud profiles have been reported from different testing laboratories and more information has been gained to understand the stiffness effect of the stud on the sound insulation of the double-leaf partitions.In this paper,the authors have given this subject a thorough review and have concluded that a critical problem needs further investigation on the determination of the stiffness of the connecting elements in the double-leaf partitions.
文摘In additional to the screw connection affecting the sound transmission characteristics of the panel-stud partition,the spacing of screws is also considered as a factor in predicting the sound insulation of the partition.It can be modeled either as a series of independent point connections,or as a line connection depending on the screw spacing.For small screw spacing,the connection between panel and stud can be treated as a line connection,from which a higher sound transmission effect can be achieved.Whilst for a larger screw spacing,it can be treated as an independent point connection,from which a lesser sound transmission through the partition can be achieved accordingly.The distinction between these two kinds of connection is also related to the frequency.Usually,half bending wavelength of a panel will be treated as a distinct frequency.Experimental results of double leaf partition with diverse screw spacing significantly demonstrated their influences on sound reduction.Some prediction methods for partitions with different screw spacing are also reviewed in this paper.It should be noted that the impact of screw spacing effecting on the sound insulation of partitions of wood stud and light-weight metal stud is different.
