Journal of Vibration and Acoustics: Recent submissions
Now showing items 2701-2720 of 3913
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A Modal Correlation Coefficient for Detection of Kinks in Mode Shapes
(The American Society of Mechanical Engineers (ASME), 1996)A measure of correlation between mode shapes is introduced. This measure is a modification of the standard Modal Assurance Criterion (MAC). The new form, called the Modal Correlation Coefficient ... -
Operation of a Four-Bar Mechanism Above Several Critical Speeds
(The American Society of Mechanical Engineers (ASME), 1996)A dynamic analysis of a four-bar mechanism shows that it has many critical speeds where the response of the system is large compared to the response at neighboring speeds. Some of these ... -
An Experimental Modal Analysis Technique for Miniature Structures
(The American Society of Mechanical Engineers (ASME), 1996)This paper describes an experimental modal analysis system which can effectively be used to obtain the modal parameters of small structures. The system uses an electromagnetic exciter to produce ... -
Identification of Stochastic System and Controller via Projection Filters
(The American Society of Mechanical Engineers (ASME), 1996)A method based on projection filters is presented for identifying an open-loop stochastic system with an existing feedback controller. The projection filters are derived from the relationship ... -
Long Term Structural Dynamics of Mechanical Systems With Local Nonlinearities
(The American Society of Mechanical Engineers (ASME), 1996)This paper deals with the long term behavior of periodically excited mechanical systems consisting of linear components and local nonlinearities. The number of degrees of freedom of the linear ... -
Maximizing the Fundamental Natural Frequency of Triangular Composite Plates
(The American Society of Mechanical Engineers (ASME), 1996)While many advances were made in the analysis of composite structures, it is generally recognized that the design of composite structures must be studied further in order to take full advantage ... -
Revisiting the Moving Mass Problem: Onset of Separation Between the Mass and Beam
(The American Society of Mechanical Engineers (ASME), 1996)In the moving mass problem, the interaction force between a moving mass and structure obviously depends on the velocity of moving mass and the flexibility of structure. Thus, in some situations, ... -
On Efficient Computation of the Steady-State Response of Linear Systems With Periodic Coefficients
(The American Society of Mechanical Engineers (ASME), 1996)An efficient method for obtaining the steady-state response of linear systems with periodically time varying coefficients is developed. The steady-state solution is obtained by dividing the ... -
Dispersion of Flexural Waves on Shells
(The American Society of Mechanical Engineers (ASME), 1996)Simple and accurate approximations are given for the dispersion properties of flexural waves on curved shells in vacuo. The results apply to shells of arbitrary double curvature, and are valid ... -
Three-Dimensional Analysis of the Free Vibration of Thick Rectangular Plates With Depressions, Grooves or Cut-Outs
(The American Society of Mechanical Engineers (ASME), 1996)A solution is presented for the free vibration of very thick rectangular plates with depressions, grooves or cut-outs using three-dimensional elasticity equations in Cartesian coordinates. Simple ... -
Effect of Axial Load on Free Vibration of Orthotropic Truncated Conical Shells
(The American Society of Mechanical Engineers (ASME), 1996)An analytical solution in the form of a power series is obtained for the three governing equations of free vibrations of axially loaded orthotropic conical shells. Numerical results are presented ... -
Development of an Electrically Controllable Damper Using a Liquid Crystal
(The American Society of Mechanical Engineers (ASME), 1996)This paper describes a new electrically controllable damper that uses a liquid crystal (LC) as the working fluid. LC is a homogeneous organic liquid characterized by the long-range order of ... -
Transient Response Technique Applied to Active Magnetic Bearing Machinery During Rotor Drop
(The American Society of Mechanical Engineers (ASME), 1996)The active magnetic bearing (AMB) is a relatively new technology which has many advantages compared with conventional bearing design. In an AMB system, the rolling-element back-up bearings are ... -
Sensitivity Calculations for Broad-Band Acoustic Radiated Noise Design Optimization Problems
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Complementarity Problems of Stick-Slip Vibrations
(The American Society of Mechanical Engineers (ASME), 1996)Multibody systems with many friction contacts not being decoupled by some force laws afford a special treatment with respect to the uniqueness of the solution after a contact event. This problem ... -
Band Brake Squeal
(The American Society of Mechanical Engineers (ASME), 1996)The purpose of this paper is to investigate the squealing mechanism of band brakes in order to develop effective treatments for the reduction or elimination of squeal noise. With increasing ... -
Perturbation Stability of Frictional Sliding With Varying Normal Force
(The American Society of Mechanical Engineers (ASME), 1996)In many systems, the normal force at friction contacts is not constant, but is instead a function of the system’s state variables. Examples include machine tools, friction dampers, brake systems ... -
Identification of Failure Modes of Carbon-Carbon Composites at Various Processing Stages Using the Acoustic Emission Technique
(The American Society of Mechanical Engineers (ASME), 1996)In the fabrication of carbon-carbon (C/C) composites, the first carbonization process is crucial, as the mechanical properties of the composite are completely altered at this stage. Some predominant ... -
Extraction of Normal Modes from Contaminated Measurement With Noise for Highly Coupled Structures
(The American Society of Mechanical Engineers (ASME), 1996)A frequency-domain technique to extract the normal mode shapes from the contaminated FRF measurements for highly coupled structures is developed. The relation between the complex FRFs and the ... -
Free and Forced Vibrations of a Spinning Viscoelastic Beam
(The American Society of Mechanical Engineers (ASME), 1996)The free and forced response of spinning, viscoelastic, Rayleigh shafts is studied. Viscoelasticity is included using the three parameter solid model. The closed form polynomial frequency equation ...