Journal of Vibration and Acoustics: Recent submissions
Now showing items 2481-2500 of 3913
-
Dynamics of a Flexible Beam With Active Nonlinear Magnetic Force
(The American Society of Mechanical Engineers (ASME), 1998)A simply supported beam is controlled in a contactless manner by the attractive force of magnetic actuators that are controlled by feedback signals from displacement and velocity sensors to ... -
Unbalance Response of a Flexible Rotor Supported by a Squeeze Film Damper
(The American Society of Mechanical Engineers (ASME), 1998)This paper investigates the unbalance response of a squeeze film damper-mounted flexible rotor, Both concentric and eccentric damper operations are examined. Comparison between predicted and ... -
Galloping Limit Cycle Amplitude and Frequency Estimation
(The American Society of Mechanical Engineers (ASME), 1998)The amplitude, frequency, and mode shape of a single galloping conductor are estimated. A finite element model of the line and supports based upon the weighted residual method is presented. ... -
Adaptive Virtual Autobalancing for a Rigid Rotor With Unknown Mass Imbalance Supported by Magnetic Bearings
(The American Society of Mechanical Engineers (ASME), 1998)The objective of this paper is to describe an imbalance compensation scheme for a rigid rotor supported by magnetic bearings that performs on-line identification of rotor imbalance and allows ... -
Railway Wheel Squeal (Squeal of Disk Subjected to Periodic Excitation)
(The American Society of Mechanical Engineers (ASME), 1998)As a fundamental study of the squeal of a railway wheel running on a corrugated rail, frictional experiments using a thin steel disk and a rod and analysis were performed. A disk representing ... -
High- to Low-Frequency Modal Interactions in a Cantilever Composite Plate
(The American Society of Mechanical Engineers (ASME), 1998)We have shown through experiment a complicated dynamic behavior of a cantilever (90/30/–30/–30/30/90)s graphite-epoxy plate. The plate was base excited using a 2000-lb table shaker near its seventh ... -
Nonlinear Dynamics of a Magnetically Supported Rotor on Safety Auxiliary Bearings
(The American Society of Mechanical Engineers (ASME), 1998)This study concerns the dynamic response of a rotor landed on auxiliary (catcher) bearings in an Active Magnetic Bearing (AMB) supported rotor, following postulated loss of power or overload ... -
Venturi Tubes: Acoustic Attenuation With Flow Loss Considerations
(The American Society of Mechanical Engineers (ASME), 1998)The acoustic wave attenuation performance of Venturi tubes with zero mean fluid flow is investigated by: (1) combining analytical solutions for one-dimensional wave propagation in conical reducers, ... -
Vibration Analysis of Dry Friction Damped Turbine Blades Using Singular Perturbation Theory
(The American Society of Mechanical Engineers (ASME), 1998)The dynamic behavior of a turbine blade with an attached dry friction damper is investigated. Due to the presence of both high and low frequency resonances, the system is numerically stiff ... -
Power Flow in Linear, Active Vibration Isolation Systems
(The American Society of Mechanical Engineers (ASME), 1998)Power flow and net energy transfer are examined for actively controlled, vibration isolation dynamics. Fundamental concepts of active damping systems are studied by examining the average power ... -
Energy and Conserved Functionals for Axially Moving Materials
(The American Society of Mechanical Engineers (ASME), 1998) -
Finite Width Effects on the Critical Speed of Axially Moving Materials
(The American Society of Mechanical Engineers (ASME), 1998)An exact solution is provided to determine the effects of the free end boundary conditions and the slenderness ratios on the critical speed of two dimensional, axially moving materials. The ... -
Improvement of Damping at the Micromechanical Level in Polymer Composite Materials Under Transverse Normal Loading by the Use of Special Fiber Coatings
(The American Society of Mechanical Engineers (ASME), 1998)This paper describes preliminary results from a systematic analytical study of the improvement of damping in polymer composites at the micromechanical level under transverse normal loading by the ... -
Free Vibration Response Characteristics of a Simple Elasto-Hereditary System
(The American Society of Mechanical Engineers (ASME), 1998)An analysis is conducted of the free vibration response characteristics of a single-degree-of-freedom (SDOF) elasto-hereditary (viscoelastic) system. The viscoelasticity is characterized by a relaxation ... -
Calculation of Component Mode Synthesis Matrices From Measured Frequency Response Functions, Part 1: Theory
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents a new method to calculate the so-called Craig-Bampton component mode synthesis (CMS) matrices from measured frequency response functions. The procedure is based on a modified ... -
Rotor Vibration Due to Collision With Annular Guard During Passage Through Critical Speed
(The American Society of Mechanical Engineers (ASME), 1998)This paper deals with a nonstationary vibration of a rotor due to its collision with a guard during passage through a critical speed. An unbalanced rigid rotor supported by springs and dampers ... -
Modeling and Experimental Assessment of Suspension Dynamics of a Horizontal-Axis Washing Machine
(The American Society of Mechanical Engineers (ASME), 1998)In this paper a nonlinear time variant rigid body dynamic model of the suspension system of an horizontal-axis washing machine is derived using Newton-Euler method, programmed for simulation, ... -
In-Plane Vibration and Crack Detection of a Rotating Shaft-Disk Containing a Transverse Crack
(The American Society of Mechanical Engineers (ASME), 1998)Dynamic response and stability of a rotating shaft-disk containing a transverse crack is investigated. FFT analysis of response amplitudes showed that the 2Ω component (Ω: rotation speed) was ... -
An Approach to Vibration Control of Multiple-Pendulum System by Wave Absorption
(The American Society of Mechanical Engineers (ASME), 1998)In this paper, a new wave-absorbing strategy has been studied to suppress the vibration of a multiple-pendulum system by controlling the lateral movement of the support. The wave-absorbing ... -
Calculation of Component Mode Synthesis Matrices From Measured Frequency Response Functions, Part 2: Application
(The American Society of Mechanical Engineers (ASME), 1998)This paper demonstrates how to calculate Craig-Bampton component mode synthesis matrices from measured frequency response functions. The procedure is based on a modified residual flexibility method, ...