Pressures inside a room subjected to simulated sonic booms

Wahba, N.N.; Glass, I. I.; Tennyson, R. C.

doi:10.1016/0022-460x(80)90470-8

Cited by 9 publications

(6 citation statements)

References 9 publications

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“…A great deal of research was conducted in the areas of psychoacoustics, human response, effects on animals, structural response and gas dynamic analyses (Carothers 1972;Gottlieb and Glass 1973;Leigh et al 1975;Gottlieb 1'974, 1976;Reinis 1976;Wahba 1977). Their possible injurious effects on humans, animals and structures were important considerations for Canada, if overflight laws were to be enacted based on fact.…”

Section: The Third Ten Yearsmentioning

confidence: 99%

“…It now appears that the excellent N-waves produced by exploding wires may not be able to exactly simulate SST sonic booms. The work on the structural response of a wood-plaster room subjected to sonic boom and its subsequent crack-propagation properties has been completed (Wahba et al 1981). Since this method does not introduce an artificial viscosity it is possible to solve the spherical shock-wave transition (Honma et al 1981).…”

Section: The Fourth Ten Years 1978-1988 and Beyondmentioning

confidence: 99%

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Over forty years of continuous research at UTIAS on nonstationary flows and shock waves

Glass

1991

Shock Waves

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Analytical and experimental research on nonsl;ationary shock waves, rarefaction waves and contact surfaces has been conducted continuously at UTIAS since its inception in 1948. Some unique facilities were used to study the properties of planar, cylindrical and spherical shock waves and their interactions. Investigations were also performed on shock-wave structure and boundary layers in ionizing argon, water-vapour condensation in rarefaction waves, magnetogasdynamic flows, and the regions of regular and various types of Mach reflections of oblique shock waves. Explosively-driven implosions have been employed as drivers for projectile launchers and shock tubes, and as a means of producing industrial-type diamonds from graphite, and fusion plasmas in deuterium. The effects of sonic-boom on humans, animals and structures have also formed an important part of the investigations. More recently, interest has focussed on shock waves in dusty gases, the viscous and vibrational structure of weak spherical blast waves in air, and oblique shock-wave reflections. In all of these studies instrumentation and computational methods have played a very important role. A brief survey of this work is given herein and in more detail in the relevant references.

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Section: The Third Ten Yearsmentioning

confidence: 99%

Section: The Fourth Ten Years 1978-1988 and Beyondmentioning

confidence: 99%

Over forty years of continuous research at UTIAS on nonstationary flows and shock waves

Glass

1991

Shock Waves

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“…This idealized shape closely resembles actual sonic boom signatures. 2,18 (2) The physical model consists of a room of volume V, and a window of cross-sectional area S and length I as shown in Figure1b. We assume that the room is treated with acoustic materials or resonators.…”

Section: Assumptionsmentioning

confidence: 99%

Simulating the response to a sonic boom

Singh

Kung

1982

SIMULATION

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Sonic booms can cause considerable annoyance and damage. Studying the response of a room with an open window can be useful in design and acoustic treatment. In most cases, a one-dimensional lumped parameter model can be used for the acoustics of the room-window system. A linear, energy-equivalent damping model is adequate for shock response calculations at off-resonance conditions. A shock response spectrum showing the maximum response as a function of shock duration is a convenient way to present results for design purposes. Output from a CSMP program suggests that a little damping is usually sufficient when the natural period of the room and window is well above the duration of the sonic boom; heavy damping is necessary when this is not true.

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“…Numerical studies of the dynamic interaction of the building to low frequency sound has traditionally been using the analytical Helmholtz resonator and modal decomposition approaches 6,[9][10][11][12][13] . The latter reference combines both these approaches studying the dynamic interaction of resonant modes in rectangular rooms interconnected through openings.…”

Section: Introductionmentioning

confidence: 99%

Analysis of low frequency sound and sound induced vibration in a Norwegian wooden building

Løvholt¹,

Madshus²,

Norén-Cosgriff³

2011

Noise Control Eng. J.

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Low frequency sound, in addition to the effects of audible sound, contributes to human annoyance and building damage by inducing building vibration. This involves whole body vibration sensing of humans, and therefore frequencies down to a few Hz become important. Here, the results of a study of low frequency sound and its generation of building vibration and induced indoor sound is presented. The study is conducted by combining both full scale field tests and numerical simulations. It is shown that the low frequency sound interaction with the fundamental frequencies of the building components combined with air leaks in the building envelope are the main factors that govern transmission of sound into the building. Furthermore, radiation from vibrating ceiling and walls seems to be the dominant source of the low frequency indoor sound, and floor vibration is acoustically driven by the indoor sound pressure in the room. Due to the low frequencies in question, tools to predict sound and vibration, and design mitigation measures at low frequencies noise and vibration in building structures are virtually non-existent. To this end, a finite element model combining acoustic wave propagation and structural dynamics presented in this paper provides a first step. Using this model, a number of countermeasures has been tested and some proven effective in this low frequency range. © 2011 Institute of Noise Control Engineering.

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Pressures inside a room subjected to simulated sonic booms

Cited by 9 publications

References 9 publications

Over forty years of continuous research at UTIAS on nonstationary flows and shock waves

Over forty years of continuous research at UTIAS on nonstationary flows and shock waves

Simulating the response to a sonic boom

Analysis of low frequency sound and sound induced vibration in a Norwegian wooden building

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