Sound Transmission Loss of a Sandwich Plate with Adjustable Core Layer Thickness

Ehrig, Tom; Dannemann, Martin; Luft, Ron; Adams, Christian; Modler, Niels; Kostka, P.

doi:10.3390/ma13184160

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…This model should also be capable of predicting the characteristic sound insulation terms as described in Table 1. To accomplish this, the acoustic model should consider a 1/3rd octave frequency range between 100 Hz and 3150 Hz with sufficient accuracy in comparison with experimental test data [16,48].…”

Section: Emphasis Is Primarily Towards Low Noisementioning

confidence: 99%

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

2021

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Steel studs are an inevitable part of drywall construction as they are lightweight and offer the required structural stability. However, the studs act as sound bridges between the plasterboards, reducing the overall sound insulation of the wall. Overcoming this often calls for wider cavity walls and complex stud decoupling fixtures that increase the installation cost while reducing the floor area. As an alternative approach, this research reveals the potential of perforated studs to improve the acoustic insulation of drywall partitions. The acoustic and structural performance is characterized using a validated finite element model that acted as a prediction tool in reducing the number of physical tests required. The results established that an acoustic numerical model featuring fluid-structure-interaction can predict the weighted sound reduction index of a stud wall assembly at an accuracy of ±1 dB. The model was used to analyze six perforated stud designs and found them to outperform the sound insulation of non-perforated drywall partitions by reducing the sound bridging. Overall, the best performing perforated stud design was found to offer improvements in acoustic insulation of up to 4 dB, while being structurally compliant.

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Section: Emphasis Is Primarily Towards Low Noisementioning

confidence: 99%

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

2021

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“…These models should also be capable of predicting the characteristic sound insulation terms as described in Table 1. To do this, the acoustic model should consider a 1/3 rd octave frequency range between 100 Hz and 3150 Hz with sufficient accuracy in comparison with experimental test data [15,46]. This is the first study to characterize the acoustic insulation of plasterboard partitions featuring studs with the perforated web.…”

Section: Introductionmentioning

confidence: 99%

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

Arjunan¹,

Baroutaji²,

Robinson³

2021

Preprint

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Steels studs are an inevitable part of drywall construction as they are lightweight and offer the required structural stability. However, the studs act as sound bridges between the plasterboards reducing the overall sound insulation of the wall. Overcoming this often calls for wider cavity walls and complex stud decoupling fixtures that increase the installation cost while reducing the floor area. As an alternative approach, this research reveals the potential of perforated studs to improve the acoustic insulation of drywall partitions. The acoustic and structural performance is characterized using a validated finite element model that acted as a prediction tool in reducing the number of physical tests required. The results established that an acoustic numerical model featuring fluid-structure-interaction can predict the weighted sound reduction index of a stud wall assembly at an accuracy of ±1 dB. The model was used to analyze six perforated stud designs and found to outperform the sound insulation of non-perforated drywall partitions by reducing the sound bridging. Overall, the best performing perforated stud design was found to offer improvements in acoustic insulation of up to 4 dB, while being structurally compliant.

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“…Junctions and boundary conditions proved to significantly affect the results, pointing out the importance of a proper design and modeling of such devices. Finally, Ehrig et al [ 12 ] investigated the potential of compressible constrained layer damping (CCLD) that is a semi-active, lightweight-compatible solution for vibration mitigation based on a base structure, a constraining plate, and a compressible open-cell foam core in between, enabling the adjustment of the structure’s vibration behavior by changing the core compression using different actuation pressures. The results showed that such changes affected transmission loss in the range between 1 kHz and 5 kHz, with the best performance appearing when maximum compression was applied.…”

mentioning

confidence: 99%