Journal of Vibration and Acoustics: Recent submissions
Now showing items 2361-2380 of 3913
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Nonlinear Vibration of Rotating Thin Disks
(The American Society of Mechanical Engineers (ASME), 2000)The response and natural frequencies for the linear and nonlinear vibrations of rotating disks are given analytically through the new plate theory proposed by Luo in 1999. The results for the ... -
Eigenvalue Estimation Using Linearly Dependent Eigenfunctions
(The American Society of Mechanical Engineers (ASME), 2000)A technique is developed for estimating the eigenvalues of one problem using an expansion of linearly dependent eigenfunctions of another problem. Such an expansion cannot be used with Galerkin’s ... -
Evaluation of Floating Ring Seals for Centrifugal Compressors Using the Finite Element Method
(The American Society of Mechanical Engineers (ASME), 1999)The use of liquid ring type oil seals in centrifugal compressors was essential for high pressure applications dating back to the early 1960’s. The analysis of high pressure oil seals was first ... -
Reliability of the Piezoelectric Layer Application to Vibration and Noise Controls
(The American Society of Mechanical Engineers (ASME), 1999)In this Tech Brief, the local curvature induced peeling tensile stress within the piezoactuator patch is qualitatively estimated, and the detailed stress analysis for an ACLD beam is conducted ... -
Classical Electrodynamics and Acoustics, Part 2: Sound Radiation by Moving Quadrupoles
(The American Society of Mechanical Engineers (ASME), 1999)Our earlier work in Part 1 of this paper [ 1] is here extended to quadrupole distributions and point quadrupoles (i.e., stresses) in arbitrary motion. Radiation patterns are obtained and ... -
Development and Implementation of a Semi-Adaptive H∞ Active Control Algorithm for Duct Noise
(The American Society of Mechanical Engineers (ASME), 1999)A hybrid active noise control (ANC) scheme for suppressing duct noise based on the H ∞ control synthesis is proposed. The controllers are designed in terms of performance, stability, and ... -
Dynamics of Branched Pipeline Systems Conveying Internal Unsteady Flow
(The American Society of Mechanical Engineers (ASME), 1999)The pipeline system conveying high pressurized unsteady internal flow may experience severe transient vibrations due to the fluid-pipe interaction under the time-varying conditions imposed by the ... -
A Compensated Acoustic Actuator for Systems with Strong Dynamic Pressure Coupling
(The American Society of Mechanical Engineers (ASME), 1999)This study improves the performance of a previously developed acoustic actuator in the presence of an acoustic duct system with strong pressure coupling. The speaker dynamics and the acoustic ... -
Dynamic Response of a Coupled Spinning Timoshenko Shaft System
(The American Society of Mechanical Engineers (ASME), 1999)The dynamic behavior of a simply-supported spinning Timoshenko shaft with coupled bending and torsion is analyzed. This is accomplished by transforming the set of nonlinear partial differential ... -
Steady-State Dynamic Behavior of a Flexible Rotor With Auxiliary Support from a Clearance Bearing
(The American Society of Mechanical Engineers (ASME), 1999)This paper investigates the steady-state responses of a rotor system supported by auxiliary bearings in which there is a clearance between the rotor and the inner race of the bearing. A ... -
Two-Mode Interaction of a Beam with a Nonlinear Boundary Condition
(The American Society of Mechanical Engineers (ASME), 1999)In order to investigate modal interactions in a subharmonic resonance of a beam with a nonlinear boundary condition, we consider a beam constrained by a nonlinear spring to a harmonic excitation. ... -
On the Analysis of Hopf Bifurcation Associated with a Two-Fold Zero Eigenvalue, Part 2: Nonautonomous System
(The American Society of Mechanical Engineers (ASME), 1999)This paper extends the bifurcation and stability analysis of the autonomous system considered in Part 1 to the case of a corresponding nonautonomous system. The effect of an external harmonic ... -
On the Analysis of Hopf Bifurcation Associated with a Two-Fold Zero Eigenvalue, Part 1: Autonomous System
(The American Society of Mechanical Engineers (ASME), 1999)The static and dynamic bifurcations of an autonomous system associated with a twofold zero eigenvalue (of index one) are studied. Attention is focused on Hopf bifurcation solutions in the ... -
Identifying Damping of a Gyroscopic System Through the Half-Power Method and Its Applications to Rotating Disk/Spindle Systems
(The American Society of Mechanical Engineers (ASME), 1999)This paper applies the half-power method to identify damping of a gyroscopic system. At first, the underlying principle of the half-power method for damped, gyroscopic systems is explained. Then ... -
Vibration Control of Bridge Towers Using a Lumped Modeling Approach
(The American Society of Mechanical Engineers (ASME), 1999)A lumped modeling method and a simple robust control design based on this method are proposed in this paper for controlling the multiple vibration modes of a bridge tower structure under ... -
Hydroelastic Vibration of Free-Edge Annular Plates
(The American Society of Mechanical Engineers (ASME), 1999)This paper is concerned with the virtual mass effect due to the presence of water on the natural frequencies of free-edge annular plates resting on free surface or completely submerged, which ... -
Theoretical and Experimental Study on Airflow Damping of Vibrating Microcantilevers
(The American Society of Mechanical Engineers (ASME), 1999)The damping characteristics of microcantilevers are clarified analytically and experimentally to establish a dynamic design method of micromechanical systems. First, an approximate formula of airflow ... -
Adaptive Vibration Control of an Axially Moving String
(The American Society of Mechanical Engineers (ASME), 1999)In this paper, the displacement of an axially moving string is regulated using a control force and a control torque applied to the string via a mechanical guide. Given the hybrid model of ... -
On the Influence of Angle-of-Attack or Sideslip on Far-Field Propeller Noise
(The American Society of Mechanical Engineers (ASME), 1999)The effect of angle-of-attack or sideslip on noise radiation by a propeller is considered, (Fig. 3). For a single propeller, neglecting installation effects, the angles of attack and sideslip ... -
On the Use of Diagonal Modes in the Elastic Identification of Thin Plates
(The American Society of Mechanical Engineers (ASME), 1999)This paper relates a further development of an earlier work by the first author and others, in which they presented a method of deriving the elastic constants of composite materials from ...