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Showing 1 to 11 of 11 for “"Plate Vibration"”.
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Attenuation of Turbulent Boundary Layer Induced Interior Noise Using Integrated Smart Foam Elements
… correlation of turbulent flow and resulting plate vibration, and coherence between plate vibration and the interior noise field. Each study was performed with the goal of improving the performance of active attenuation of turbulent boundary layer induced interior noise. Depending on the …
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Active control of sound radiation from fluid loaded plates
… from an infinite or a finite fluid-loaded plate excited below the critical frequency is analytically studied. The disturbance is caused by a flexural wave in an infinite plate, or by a point force on a finite plate at subsonic frequencies. The wave scattering is caused by discontinuities on …
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ΑΝΑΓΝΩΡΙΣΗ ΙΔΙΟΜΟΡΦΩΝ ΤΑΛΑΝΤΟΥΜΕΝΩΝ ΠΛΑΚΩΝ ΑΠΟ ΘΕΡΜΟΚΡΑΣΙΑΚΕΣ ΜΕΤΡΗΣΕΙΣ
… AND ASSOCIATED ENERGY DISSIPATION IN A VIBRATING PLATE RESULTSIN A TEMPERATURE INCREASE. GIVEN THE HARMONIC MOTION OF THE BOUNDARY, THE STEADY VIBRATION OF PLATES AND THE DAMPING HEAT, GENERATED IS COMPUTED. THEN THE HEAT CONDUCTION EQUATION YIELDS THE TEMPERATURE DISTRIBUTION. THE INVERSE …
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An experimental method for structural intensity and source location
… function as tools to study vibrating plates. A laser Doppler vibrometer is used in measuring the plate normal velocity for the calculation of the structural intensity and the force distribution function. Several examples show the possibility of locating sources and studying the …
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A thermal-hydraulic analysis of the cooling system for the 500 KW Virginia Polytechnic Institute and State University reactor
… 2) surface boiling should not occur on any fuel plate, 3) fuel meltdown must not occur after a loss-of-flow or loss-of-coolant accident, 4) fuel plate vibration problems should not be significant. The results of the investigation indicate that the above limiting conditions will not be exceeded …
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Active control of sound transmission through plates in a reverberant environment
… control of sound transmission through an elastic plate placed between two reverberation chambers is studied experimentally. Active acoustic control is performed using piezoelectric sensors and actuators bonded to the plate. The control technique uses an adaptive control algorithm. Results are …
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An integral equation approach to vibrating plates
… of the natural frequencies of a vibrating plate is of great importance if an effective design is to be made which will prevent critical conditions of heavy vibration from occurring. Those frequencies which are associated with the symmetric modes are especially important. Many approximate …
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Nonlinear vibration of beams and plates resting on elastic foundations having nonlinear stiffness properties
… the other two dimensions. On the other hand, a plate is a structural element char- acterised by its thickness being very small compared with the other two dimensions. Beams and plates find civil and mechanical engineering applications and are mostly used to construct build- ings, bridges, …
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Sound radiation from perforated plates
Perforated plates are quite often used as a means of engineering noise control to reduce the sound radiated by structures. However, there appears to be a lack of representative models to determine the sound radiation from a perforated plate. The aim of this thesis is to develop such a model that …
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Effect of grazing flow on structural-acoustic response of an elastic plate with sound in a duct
… interaction of sound with a thin elastic plate mounted flush on a wall in a rectangular duct in the presence of a uniform mean subsonic and supersonic flow. A linear, time-harmonic theory based on modal descriptions of the plate velocity and duct acoustic fields is first developed. The …
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Free and Forced Vibration of Linearly Elastic and St. Venant-Kirchhoff Plates using the Third Order Shear and Normal Deformable Theory
… study three problems involving free and forced vibrations of linearly and nonlinearly elastic plates with a third order shear and normal deformable theory (TSNDT) and the three dimensional (3D) elasticity theory. We used the commercial software ABAQUS for analyzing 3D deformations, and an …