Journal of Vibration and Acoustics: Recent submissions
Now showing items 1941-1960 of 3913
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An Efficient Technique for Design of Hydraulic Engine Mount via Design Variable-Embedded Damping Modeling
(The American Society of Mechanical Engineers (ASME), 2005)For an efficient design of hydraulic mounts, it is most important to have a good mathematical model available, which must be simple yet capable of representing dynamic characteristics of the ... -
Sui, F., and Ichchou, M. N., 2004, “Prediction of Time-Varying Vibroacoustic Energy Using a New Energy Approach” (ASME J. Vib. Acoust. 126, 184–189)
(The American Society of Mechanical Engineers (ASME), 2005)This paper addresses the issue of transient structural dynamics in the higher-frequency range by an energetic approach. Its main purpose is to propose an alternative equation [Eq. (10) of the ... -
Sensitivity of Uniform Load Surface Curvature for Damage Identification in Plate Structures
(The American Society of Mechanical Engineers (ASME), 2005)In this paper a new sensitivity-based method of using measured modal parameters to locate and quantify damage is developed for plate-like structures. With the measured incomplete modal data for ... -
A Unified Approach to Analyze Vibration of Axisymmetric Rotating Structures with Flexible Stationary Parts
(The American Society of Mechanical Engineers (ASME), 2005)This paper demonstrates a unified approach to analyze linear vibration of rotating machines with arbitrary geometry and complexity. In this formulation, the rotating machine consists of three ... -
Hydrostatic Gas Journal Bearings for Micro-Turbomachinery
(The American Society of Mechanical Engineers (ASME), 2005)Several years ago an effort was undertaken at MIT to develop high-speed rotating MEMS (Micro Electro-Mechanical Systems) using computer chip fabrication technology. To enable high-power density ... -
Dynamic Modeling and Simulation of Satellite Tethered Systems
(The American Society of Mechanical Engineers (ASME), 2005)The objective of this paper is to study the dynamic simulation of a tether as it is deployed or retrieved by a winch on a satellite orbiting around earth. In an effort to understand the ... -
Wavelet Analysis of Stick-Slip Signals in Oscillators With Dry-Friction Contact
(The American Society of Mechanical Engineers (ASME), 2005)Wavelet transforms were compared between various simulated friction models and real stick-slip data. While simulations of several models produced stick-slip transition oscillations seen in the real ... -
Nonlinear Dynamics of High-Speed Milling—Analyses, Numerics, and Experiments
(The American Society of Mechanical Engineers (ASME), 2005)High-speed milling is often modeled as a kind of highly interrupted machining, when the ratio of time spent cutting to not cutting can be considered as a small parameter. In these cases, the ... -
Damping Characteristics of Beams with Enhanced Self-Sensing Active Constrained Layer Treatments Under Various Boundary Conditions
(The American Society of Mechanical Engineers (ASME), 2005)In this paper, an energy-based approach is developed to investigate damping characteristics of beams with enhanced self-sensing active constrained layer (ESACL) damping treatments. Analytical ... -
Optimizing Vibration Isolation of Flex Circuits in Hard Disk Drives
(The American Society of Mechanical Engineers (ASME), 2005)A “flex circuit” is a laminate of polyimide substrate, adhesive, and copper conductors that is used to connect the stationary electronic components in a computer hard disk drive to the rotating ... -
Combined Expansion and Orthogonalization of Experimental Modeshapes
(The American Society of Mechanical Engineers (ASME), 2005)The paper describes a method of combined expansion and orthogonalization (CEO) of experimental modeshapes. Most model updating and error localization methods require a set of full length, orthogonal ... -
Dynamic Response Optimization of Piezoelectrically Excited Thin Resonant Beams
(The American Society of Mechanical Engineers (ASME), 2005)Piezoelectrically excited, resonant, elastic beams find wide use as piezoelectric fans, optical choppers, MEMS sensors, and piezoelectric motors. The devices consist of either one piezoelectric ... -
Natural Frequency Tuning Using Structural Patches
(The American Society of Mechanical Engineers (ASME), 2005)A novel method for shifting the natural frequencies of a structure to specific values using structural patches is introduced. When a host structure is bonded with multiple structural patches, ... -
A Generalized Infinite Element for Acoustic Radiation
(The American Society of Mechanical Engineers (ASME), 2005)A generalized infinite element is presented by combining following aspects: (1) The geometry mapping in the Cartesian system is chosen so as to facilitate the generation of infinite element ... -
Steady-State Residual Vibrations in High-Speed, Dwell-Type, Rotating Disk Cam-Follower Systems
(The American Society of Mechanical Engineers (ASME), 2005)Followers driven by high-speed, dwell-type, rotating disk cams can exhibit undesirable residual vibrations during dwell. These vibrations have been studied with linear models mostly using results ... -
Discrete-Time Sliding Mode Control on a Flexible Truss Structure
(The American Society of Mechanical Engineers (ASME), 2005)Implementation of discrete-time sliding mode control on a sampled-data system leads to sliding motion in an O(T2) boundary layer of the discontinuity surface, where T is the sampling period. A ... -
Time-Varying Controller for Temperature-Dependent Viscoelasticity
(The American Society of Mechanical Engineers (ASME), 2005)There are internal-variable techniques that account for the frequency-dependent behavior of viscoelastic materials, but the temperature dependence of these materials has received much less attention. ... -
Test Response and Nonlinear Analysis of a Turbocharger Supported on Floating Ring Bearings
(The American Society of Mechanical Engineers (ASME), 2005)Measurements of casing acceleration on an automotive turbocharger running to a top speed of 115 krpm and driven by ambient temperature pressurized air are reported. Waterfall acceleration spectra ... -
Scaling Laws for Ultra-Short Hydrostatic Gas Journal Bearings
(The American Society of Mechanical Engineers (ASME), 2005)The journal bearings of the MIT micro-devices are located at the outer periphery of the rotor and are designed to operate at rotational speeds of order two million rpm in order to enable ... -
Two-Dimensional Piezoelasticity and Zigzag Theory Solutions for Vibration of Initially Stressed Hybrid Beams
(The American Society of Mechanical Engineers (ASME), 2005)Two-dimensional (2D) exact piezoelasticity and one-dimensional coupled zigzag theory solutions are presented for vibration of initially stressed simply-supported cross-ply symmetrically laminated hybrid ...