Prediction of the Blocked Force at Impact of Japanese Rubber Ball Source

Schoenwald, Stefan; Zeitler, Berndt; Nightingale, T.R.T.

doi:10.3813/aaa.918439

Cited by 11 publications

(16 citation statements)

References 9 publications

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“…Hiramatsu [29] tested a three-story full scale school within type A floor, using three different sources: car tyre, rubber ball and tapping machine. The results show a similar ISO tapping machine frequency trend compared to previous studies, but the other two sources, as expected [30]- [33], provide very different behaviours; the author concludes that the best source for A type is the car tyre conversely to Bettarello's outcomes [6].…”

Section: Type Asupporting

confidence: 76%

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Acoustic of lightweight timber buildings: A review

Caniato

Bettarello²,

Ferluga

et al. 2017

Renewable and Sustainable Energy Reviews

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This paper presents a literature overview of the acoustic studies dedicated to lightweight wooden constructions. The reviewed articles contain prediction models, laboratory and field measurements, finite element or computational investigations as well as subjective survey describing the vibro-acoustic behaviour of a large range of wooden structures. The review analyses different type of timber constructions and investigates the acoustic research methodologies highlighting the following aspects: airborne sound insulation, impact noise reduction, flanking transmissions, human perceptions and pros and cons of the presented methods. Furthermore, an in-depth analysis of impact noise of bare floors focuses on how impact sound reduction could not be as efficient as in heavyweight constructions; the comparison between the different approaches on prediction of airborne sound insulation of multilayer timber partitions compared to traditional heavy building materials is shown. Finally a subjective method survey is provided, underlining the weakest point of timber buildings: low frequency sound insulation

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Section: Type Asupporting

confidence: 76%

“…Hammer [15], [16] investigated the structure using analytical models, considering the excitation force and the interaction of ISO tapping machine on lightweight floors [30]. Their conclusions report the following considerations:…”

Section: Type Bmentioning

confidence: 99%

Acoustic of lightweight timber buildings: A review

Caniato

Bettarello²,

Ferluga

et al. 2017

Renewable and Sustainable Energy Reviews

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“…Refs. [12,23]]. The main features are (a) contact time of approximately 20 ms, and (b) an asymmetric approximation to a half-sinusoid with ripples on the first part of the curve where there is increasing force and a smoother curve for the decreasing force.…”

Section: Force Plate Measurementsmentioning

confidence: 99%

“…Schoenwald et al [12] used a simplified analytical model to calculate the force that was applied by the rubber ball when impacting a rigid surface. Comparison with measurements indicated that the rubber ball was a significantly more complex source than the analytical model of a hollow spherical shell.…”

Section: Introductionmentioning

confidence: 99%

Prediction of maximum fast time-weighted sound pressure levels due to transient excitation from the rubber ball and human footsteps

Robinson

Hopkins

2015

Building and Environment

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“…In the field of building acoustics, human walking has been simulated using an impact source such as a tapping machine or a heavy/soft impact source [31]. It has been suggested that a heavy/soft impact source is a good representative of human walking in terms of mechanical impedance and impact force as well as subjective similarity [38][39][40] 0.97 for Wb, Wk, and Wm (p<0.01), and 0.96 for Wg (p<0.01). This implies that the relative importance of vibration with different floors might be obtained using a heavy/soft impact source instead of field measurements with humans walking.…”

Section: Prediction Of Vibration Perception Using a Standard Impact Smentioning

confidence: 99%

Evaluation of Floor Vibrations Induced by Walking Barefoot in Heavyweight Buildings

Lee¹,

Lee²,

Griffin³

2015

Acta Acustica united with Acustica

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Floor vibrations induced by humans walking barefoot were investigated in heavyweight buildings. Six floating floors with different floor structures and thick resilient isolators were built in laboratories with the same dimensions and boundary conditions. Subjective tests were performed to assess the vibration serviceability of the floor structures. In the first test, subjects were asked to walk across a floor and then rate the intensity of the vibrations, and the acceptability and serviceability of the floors. In the second test, subjects were seated on a chair in the middle of the floor and asked to rate the floor vibrations when a walker passed by the subjects. Floor vibrations induced by human walking were analysed using peak acceleration, root-mean-square (r.m.s.) acceleration, and the vibration dose value (VDV), with four frequency weighting functions (Wb, Wk, Wg, and Wm). Significant differences in the measured floor vibrations were found across the floor structures with greater floor vibration leading to greater perceived vibration intensity, lower acceptability, and lower serviceability. The VDV was correlated with perceptions of floor vibration when used with all four frequency weighting functions. The impact noise induced by walking did not influence subjective evaluations of floor vibration. A heavy/soft impact source (a standard impact source) provided a useful prediction of differences between the perception of the vibration on different floors.

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Prediction of the Blocked Force at Impact of Japanese Rubber Ball Source

Cited by 11 publications

References 9 publications

Acoustic of lightweight timber buildings: A review

Acoustic of lightweight timber buildings: A review

Prediction of maximum fast time-weighted sound pressure levels due to transient excitation from the rubber ball and human footsteps

Evaluation of Floor Vibrations Induced by Walking Barefoot in Heavyweight Buildings

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