Global ETD Search
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Showing 1 to 4 of 4 for “"FORCED HARMONIC VIBRATIONS"”.
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Transfer matrix analysis of an electrohydraulically driven rotary- vibratory drilling system
… conventional rotary drilling system assisted by forced harmonic vibrations. The model includes a drill string with continuously distributed inertia, stiffness, internal material, and external fluid damping. These properties were introduced through a new continuum transfer matrix for a damped pipe …
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System Identification and Optimization Methodologies for Active Structural Acoustic Control of Aircraft Cabin Noise
… a novel experimental technique for examining the forced harmonic vibrations of an aircraft fuselage and isolating the acoustically well-coupled motions that cause significant interior noise. The developed system identification technique is itself based upon an active control system, which is used …
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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 …
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ΣΤΑΤΙΚΗ ΚΑΙ ΔΥΝΑΜΙΚΗ ΕΠΙΛΥΣΗ ΤΟΥ ΚΥΛΙΝΔΡΙΚΟΥ ΠΛΑΙΣΙΟΥ ΠΛΕΓΜΑΤΟΣ
IN THIS THESIS A METHOD FOR THE STATIC AND DYNAMIC ANALYSIS OF A MULTICOLUMN AND MULTISTOREY CYLINDRICAL PLEXUS FRAME IS PRESENTED . THE FRAME CONSISTS OF A SYSTEM OF M HORIZONTAL CIRCULAR BEAMS I AND N VERTICAL STRAIGHT BEAMS J, WHICH ARE RECTANGULARLY INTERSECTED, SO THAT MXN RIGID JOINTS TO BE …