Journal of Vibration and Acoustics: Recent submissions
Now showing items 2461-2480 of 3913
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Retrofitting Active Control into Passive Vibration Isolation Systems
(The American Society of Mechanical Engineers (ASME), 1998)Active vibration control uses sensing and power actuators to attenuate vibrational energy due to external disturbances. Many of these systems are retrofitted into already existing passive ones. ... -
On an Innovative Method of Modeling General Nonlinear Mechanical Systems, Part 2: Experiments
(The American Society of Mechanical Engineers (ASME), 1998)In this the second part, the attention will he focused on the practical implementation of the techniques proposed in Part 1. Firstly, the problem of generating a periodic excitation signal ... -
Vibration Localization in Rotating Shafts, Part 1: Theory
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents a theoretical study of vibration localization in single-span, flexible, rotating shafts. A noncircular cross-section of the rotating shaft, leading to dissimilar lateral moments ... -
Damping of Flexural Waves With Imbedded Viscoelastic Materials
(The American Society of Mechanical Engineers (ASME), 1998)This paper considers a passive damping method that can be applied to beam-like structures such as machine tool bases and columns. The method uses viscoelastic materials to dissipate energy in ... -
Vibration Suppression of Rotating Shafts Passing Through Resonances by Switching Shaft Stiffness
(The American Society of Mechanical Engineers (ASME), 1998)A method suggested in the past to suppress the vibrations of flexible rotor systems passing through critical speeds is reconsidered. An appropriate switching of the system stiffness (by using ... -
Multiple Harmonic Balance Method for Aperiodic Vibration of a Piecewise-Linear System
(The American Society of Mechanical Engineers (ASME), 1998)A multiple harmonic balance method is presented in this paper for obtaining the aperiodic steady-state solution of a piecewise-linear system. As the method utilizes general and systematic ... -
Vibration Control of Structures With Closely Spaced Frequencies by a Single Actuator
(The American Society of Mechanical Engineers (ASME), 1998)A variable gain direct velocity feedback is proposed to control vibrations in structures with two closely spaced natural frequencies using a single actuator. First, limitation of the conventional ... -
Vibration Localization in Rotating Shafts, Part 2: Experiment
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents an experimental study of vibration localization in single-span, flexible, rotating shafts. It was shown in a companion paper (Part I) that a noncircular cross-section of the ... -
A General Approach on the Mechanical Analysis of Nonuniform Beams With Nonhomogeneous Elastic Boundary Conditions
(The American Society of Mechanical Engineers (ASME), 1998)The dynamic and static response of a nonuniform beam with nonhomogeneous elastic boundary conditions is studied by generalizing the method of Mindlin-Goodman and utilizing the exact solutions of ... -
Sensitivity of a Mobile Manipulator Response to System Parameters
(The American Society of Mechanical Engineers (ASME), 1998)The reported study investigates the stochastic dynamics of a mobile manipulator. The manipulator is mounted atop a vehicle supported on multiple wheels. Stochastic excitations and deterministic ... -
On an Innovative Method of Modeling General Nonlinear Mechanical Systems, Part 1: Theory and Numerical Simulations
(The American Society of Mechanical Engineers (ASME), 1998)This is the first part of a paper on an innovative approach of studying general nonlinear structural dynamic systems. In this part, the theoretical background and some numerical simulations are ... -
The Free Vibration of a Cylindrical Shell on an Elastic Foundation
(The American Society of Mechanical Engineers (ASME), 1998)The frequency equation for a thin circular cylindrical shell resting on an elastic foundation is developed by using the first order shell theory of Sanders and eigenfrequencies are calculated. ... -
Vibration Analysis of a Rotor With Multiple Flexible Disks Using Assumed Modes Method
(The American Society of Mechanical Engineers (ASME), 1998)An assumed modes method is developed to investigate the effect of multiple flexible disks on the vibrational modes of a flexible rotor system. The analysis rotor model consists of multiple ... -
A New Rectangular Plate Element for Vibration Analysis of Laminated Composites
(The American Society of Mechanical Engineers (ASME), 1998)In this paper, a higher order rectangular plate bending element based on a Higher Order Shear Deformation Theory (HSDT) is developed. The element has 4 nodes and 20 degrees of freedom. The ... -
Monitoring Torsional Vibrations of Electro-mechanical Systems Using Stator Currents
(The American Society of Mechanical Engineers (ASME), 1998)A method is proposed to detect shaft torsional vibrations in AC motors and generators from their stator currents. This is achieved by extracting current components at specific frequencies which ... -
The Efficacy of the Momentum Balance Method in Transverse Impact Problems
(The American Society of Mechanical Engineers (ASME), 1998)An elastic-plastic contact law that incorporates local permanent deformation in the contact zone has been used to investigate the efficacy of the momentum balance method in transverse impact ... -
Free Hydroelastic Vibrations of a Liquid Attached to a Cylindrical Sector Shell in a Zero-Gravity Condition
(The American Society of Mechanical Engineers (ASME), 1998)A theoretical analysis has been carried out on the linear free hydroelastic vibrations of a liquid attached to a cylindrical sector shell. The liquid is assumed to be an ideal liquid with a ... -
Nonaxisymmetric Acoustic Radiation and Scattering From Rigid Bodies of Revolution Using the Surface Variational Principle
(The American Society of Mechanical Engineers (ASME), 1998)The surface variational principle (SVP), which represents the surface response as a series of basis functions spanning the entire surface, provides a global description of acoustic fluid-structure ... -
An Experimental Investigation into the Semi-Active and Active Control of Longitudinal Vibrations in a Large Tie-Rod Structure
(The American Society of Mechanical Engineers (ASME), 1998)An experimental study into the use of one semi-active and two active control devices employed to attenuate the transmission of longitudinal vibrations on a large tie-rod structure is described. ... -
Fault Diagnosis of Joint Backlash
(The American Society of Mechanical Engineers (ASME), 1998)The aim of this paper is to develop appropriate techniques to detect and classify the joint backlash of a robot by monitoring its vibration response during normal operating conditions. In this ...