Journal of Vibration and Acoustics: Recent submissions
Now showing items 1681-1700 of 3913
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Application of a Novel Hybrid Intelligent Method to Compound Fault Diagnosis of Locomotive Roller Bearings
(The American Society of Mechanical Engineers (ASME), 2008)To diagnose compound faults of locomotive roller bearings accurately, a novel hybrid intelligent diagnosis method is proposed in this paper. First of all, vibration signals are preprocessed to ... -
Probability Distribution of Peaks for Nonlinear Combination of Vector Gaussian Loads
(The American Society of Mechanical Engineers (ASME), 2008)The problem of approximating the probability distribution of peaks, associated with a special class of non-Gaussian random processes, is considered. The non-Gaussian processes are obtained as ... -
Design of Disturbance Observers for Multi-Input Multi-Output Systems
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, the long-standing problem of designing disturbance observers for multi-input multi-output (MIMO) systems is solved. The disturbance observer presented here has a simple structure ... -
Vibroacoustical Analysis Based on a Multimodal Strategy: Triple Modal Synthesis
(The American Society of Mechanical Engineers (ASME), 2008)Modal synthesis methods have long been studied because the use of generalized coordinates makes it possible to reduce calculation costs. Our approach uses modes to describe each part of the ... -
Finite Element Modeling and Analysis of Friction-Wedge Dampers During Suspension Pitch Modes
(The American Society of Mechanical Engineers (ASME), 2008)A two-dimensional finite element model has been developed to investigate the friction damping characteristics of suspensions with so-called “constant-damping” friction wedges widely used in three-piece ... -
Forced Oscillations of a Continuous Asymmetrical Rotor With Geometric Nonlinearity (Major Critical Speed and Secondary Critical Speed)
(The American Society of Mechanical Engineers (ASME), 2008)Forced oscillations in the vicinities of both the major and the secondary critical speeds of a continuous asymmetrical rotor with the geometric nonlinearity are discussed. When the self-aligning ... -
Design Optimization With an Uncertain Vibroacoustic Model
(The American Society of Mechanical Engineers (ASME), 2008)This paper deals with the design optimization problem of a structural-acoustic system in the presence of uncertainties. The uncertain vibroacoustic numerical model is constructed by using a recent ... -
Robust Optimal Balancing of High-Speed Machinery Using Convex Optimization
(The American Society of Mechanical Engineers (ASME), 2008)For high-speed rotating machinery, such as turbomachinery, the vibration caused by the rotor mass imbalance is a major source of maintenance problems. Vibration reduction by balancing under ... -
Suppression of Brake Squeal Using Shunted Piezoceramics
(The American Society of Mechanical Engineers (ASME), 2008)Due to increased interest in comfort features, considerable effort is spent by brake manufacturers in order to suppress brake squeal. This process can be shortened by eliminating the remaining ... -
A Deconvolution-Based Approach to Structural Dynamics System Identification and Response Prediction
(The American Society of Mechanical Engineers (ASME), 2008)Two general linear time-varying system identification methods for multiple-input multiple-output systems are proposed based on the proper orthogonal decomposition (POD). The method applies the POD ... -
Two-Dimensional Input Shaping for One-Dimensional Continua
(The American Society of Mechanical Engineers (ASME), 2008)This paper extends input shaping control to one-dimensional continua. Unlike discrete systems where the input is shaped only in the temporal domain, temporal and spatial input shaping can produce ... -
Development of a Novel Algorithm for a Crack Detection, Localization, and Sizing in a Beam Based on Forced Response Measurements
(The American Society of Mechanical Engineers (ASME), 2008)The present work aims at the development of a method for the crack detection, localization and sizing in a beam based on the transverse force and response signals. The Timoshenko beam theory ... -
Free Vibration Analysis of Arbitrarily Shaped Plates With Smoothly Varying Free Edges Using NDIF Method
(The American Society of Mechanical Engineers (ASME), 2008)The so-called non-dimensional influence function method that was developed by the authors is extended to free vibration analysis of arbitrarily shaped plates with the free boundary condition. A ... -
Dynamic Acoustic Measurement Techniques Considering Human Perception
(The American Society of Mechanical Engineers (ASME), 2008)Dynamic measurement implies determining the content of signals having spectral structure and energy changing with time, sometimes on very short time scales. Dynamic measurements can present ... -
Vibration Suppression of Rotating Machinery Utilizing Discontinuous Spring Characteristics (Stationary and Nonstationary Vibrations)
(The American Society of Mechanical Engineers (ASME), 2008)In rotating machinery, resonance phenomena occur with large amplitude in the vicinities of the major critical speeds. In this paper, a new vibration suppression method utilizing a discontinuous ... -
A Constrained Lagrange Formulation of Multilink Planar Flexible Manipulator
(The American Society of Mechanical Engineers (ASME), 2008)In this article, the closed-form dynamic equations of planar flexible link manipulators (FLMs), with revolute joints and constant cross sections, are derived combining Lagrange’s equations and the ... -
Monitoring the Onset and Propagation of Natural Degradation Process in a Slow Speed Rolling Element Bearing With Acoustic Emission
(The American Society of Mechanical Engineers (ASME), 2008)The monitoring and diagnosis of rolling element bearings with the high frequency acoustic emission (AE) technology has been ongoing since the late 1960s. This paper demonstrates the use of AE ... -
Prediction of the Vibration Levels Generated by Pyrotechnic Shocks Using an Approach by Equivalent Mechanical Shock
(The American Society of Mechanical Engineers (ASME), 2008)This paper is concerned with the numerical simulation of mechanical structures subjected to pyroshocks. In practice, the methodology is applied on the pyroshock test facility, which is used by ... -
Self-Similarity in Vibration Time Series: Application to Gear Fault Diagnostics
(The American Society of Mechanical Engineers (ASME), 2008)The vibration time series of gear systems exhibit self-similarity. The time-series behavior is characterized by an exponent, known as the scaling exponent. An algorithm is proposed for the ... -
Investigation of Granular Damping in Transient Vibrations Using Hilbert Transform Based Technique
(The American Society of Mechanical Engineers (ASME), 2008)Granular damping results from a combination of energy dissipation mechanisms including the impact and the friction between the vibrating structure and granules and among the granules. Although ...