Volume 1, Issue 2
مرور بر اساس
ارسال های اخیر
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Plume outflow intrusion impact on acoustical signal fluctuations in a pre-stratified environment
(Iranian Society of Acoustics and Vibration and Avecina, 2015-07-01)Existence of outflow intrusion introduces small-scale turbulence that perturbs the vertically stratified character of the sound velocity and causes spatial and temporal fluctuations of the sound propagation. In this ...
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Transverse vibration and instability of fluid conveying triple-walled carbon nanotubes based on strain-inertia gradient theory
(Iranian Society of Acoustics and Vibration and Avecina, 2015-07-01)In this paper, the transverse vibration of a triple-walled carbon nanotube (TWCNT) conveying fluid flow is studied based on the strain/inertia gradient theory with van der Waals interaction taken into consideration. The ...
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Nonlinear energy harvesting through a multimodal electro-mechanical system
(Iranian Society of Acoustics and Vibration and Avecina, 2015-07-01)A semi-analytical method is used to illustrate the behavior of a multimodal nonlinear electromechanical system which is under base-excitation. System is considered as piezo-ceramic patches attached to a cantilever beam ...
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Optimal integrated passive/active design of the suspension system using iteration on the Lyapunov equations
(Iranian Society of Acoustics and Vibration and Avecina, 2015-07-01)In this paper, an iterative technique is proposed to solve linear integrated active/passive design problems. The optimality of active and passive parts leads to the nonlinear algebraic Riccati equation due to the active ...
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Model identification and dynamic analysis of ship propulsion shaft lines
(Iranian Society of Acoustics and Vibration and Avecina, 2015-07-01)Dynamic response analysis of mechanical structures is usually performed by adopting numerical/analytical models. Finite element (FE) modeling as a numerical approach plays an important role in dynamic response analysis of ...
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Effect of non-acoustic properties on the sound absorption of polyurethane foams
(Iranian Society of Acoustics and Vibration and Avecina, 2015-07-01)In this paper the influence of non-acoustic properties on the sound absorption coefficient of polyurethane foams as a porous medium is investigated. Biot's equations with transfer matrix method, as the solution approach ...



