Measurements of low frequency impact sound frequency response functions and vibrational properties of light weight timber floors utilizing the ISO rubber ball

Olsson, Jörgen; Linderholt, Andreas

doi:10.1016/j.apacoust.2020.107313

Cited by 7 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, an investigation on this topic is of paramount importance. Indeed, some previous research has focused on the analysis of the impact noise produced by a rubber ball on concrete floors [49][50][51][52][53] but only a few studies have focused on timber floors [54][55][56][57] and these have not been very comprehensive. Furthermore, a comparison of the three sound sources (dodecahedron, tapping machine and rubber ball) is missing in the literature.…”

Section: Research Gapmentioning

confidence: 99%

See 1 more Smart Citation

A comprehensive vibroacoustic investigation of a cross laminated timber floor

Caniato

Bettarello

Granzotto

et al. 2022

Construction and Building Materials

View full text Add to dashboard Cite

Section: Research Gapmentioning

confidence: 99%

“…Therefore, the rubber ball is used, especially for lightweight partitions. Its use is robust and reliable and provides high repeatability [56]. The rubber ball generates this impact when it is dropped vertically from the height of 1 m.…”

Section: Impact Noise Sourcesmentioning

confidence: 99%

A comprehensive vibroacoustic investigation of a cross laminated timber floor

Caniato

Bettarello

Granzotto

et al. 2022

Construction and Building Materials

View full text Add to dashboard Cite

“…Jeon evaluated the noise level generated by impact balls during the experiment [8]. Olsson found that rubber balls exhibit a similar low-frequency noise to that produced by human activities within the low-frequency range [9].…”

Section: Introductionmentioning

confidence: 99%

The calibration device research for assessing the impact exposure level of rubber balls in architectural acoustics

Li,

Yan,

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

In order to accurately measure the impact exposure level of rubber balls used in architectural acoustics, a calibration device is designed based on a force sensor, signal analyzer, programmable stepper motor and Infinite Impulse Response (IIR) filter. A weighing sensor with a range of 200 kg is selected to match the range of impact forces of rubber balls. The sensor is installed on a specially designed metal base plate of a rubber ball measuring fixture and connected to the signal analyzer. The rubber ball is dropped from a predetermined height in a free-fall manner to impact the sensor, generating an impact waveform. The force exposure level is then calculated by using software algorithms built into the device. The accuracy and reliability of the calibration device are evaluated by conducting repeated measurements on rubber balls and comparing the results with a known standard force exposure level curve. The experimental results demonstrate that the calibration device can consistently and stably measure the force exposure level of rubber balls, showing consistency with the known standard values. However, due to limitations such as a limited variety of measured objects and insufficient measurement repetitions, further research will be conducted to increase the number of tested rubber balls and enhance the device’s capabilities. This will provide technical support for the further development and application of the device.

show abstract

“…The bang machine which can drop a 7.3 kg tire from a height of 85 cm or a 2.5 kg rubber ball which falls freely from a height of 100 cm is used to simulate heavy-weight impact sources such as human running and jumping. 6,7 Impact sources such as fallen rigid objects and hammers used in building decoration have great stiffness and the duration of these impacts on structures is shorter. Compared with that induced by human walking, running, and jumping, the energy of structural vibration caused by these impact sources mainly distributes in a higher frequency range.…”

Section: Introductionmentioning

confidence: 99%

The transmission characteristics and influence prediction of impulsive vibration caused by a solid metal ball impact in buildings

Guo

Lin

2022

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

The impulsive vibration induced by human running and jumping, object falling, striking during decoration, etc., significantly disturbs the learning, work, and life of people through building structure transmission. To study the influence of impulsive vibration in buildings, a vacant frame building was selected as a tested building. The vibration at each floor besides hitting spot would be measured when a solid metal ball falling freely hit the first floor of this building. The vibration response at each floor caused by the excitation above was simulated through a finite element method. The parameters of the simulation model were optimized according to measured results. Furthermore, the influence of building structure, the total amount of stories, and slab dimension on the transmission of vibration from 1 Hz to 80 Hz which can be perceived by human bodies was quantitatively studied. Results showed that the vertical weighted vibration acceleration level at each floor linearly decreased with the increase of the logarithm of the distance between each floor and the hitting spot. A prediction model of vertical weighted vibration acceleration level from 1 Hz to 80 Hz induced by the impulsive vibration in buildings was developed according to simulation results. The corrections relating to the number of story, building structure, slab span, slab length-to-width ratio, and slab thickness were respectively introduced in the model which can predict the vertical weighted vibration acceleration level at each floor above the hitting spot. The results of this study can provide a basis for the prediction and control of impulsive vibration caused by an impact source with great stiffness in buildings.

show abstract

Measurements of low frequency impact sound frequency response functions and vibrational properties of light weight timber floors utilizing the ISO rubber ball

Cited by 7 publications

References 6 publications

A comprehensive vibroacoustic investigation of a cross laminated timber floor

A comprehensive vibroacoustic investigation of a cross laminated timber floor

The calibration device research for assessing the impact exposure level of rubber balls in architectural acoustics

The transmission characteristics and influence prediction of impulsive vibration caused by a solid metal ball impact in buildings

Contact Info

Product

Resources

About