Journal of Vibration and Acoustics: Recent submissions

Now showing items 2101-2120 of 3913

    • Time Domain Identification of Moving Loads on Bridge Deck 

      X. Q. Zhu; S. S. Law (The American Society of Mechanical Engineers (ASME), 2003)
      A new time domain method is presented to identify moving loads on a bridge deck based on the measured responses. The bridge deck is modeled as an orthotropic plate and the loads are modeled ...

    • Proper Orthogonal Modes of a Beam Sensed with Strain Gages 

      M. S. Riaz; B. F. Feeny (The American Society of Mechanical Engineers (ASME), 2003)
      Proper orthogonal decomposition (POD) is a useful experimental tool in dynamical systems, for example in dimensionality studies 12 and reduced order modeling 3456. Application of POD in structural ...

    • Broadband Spatially Feedforward Active Noise Control Algorithms Using a Comb Filter 

      Mingsian R. Bai; Jienwen Lai (The American Society of Mechanical Engineers (ASME), 2003)
      A controller composed of a nonrecursive filter and a recursive filter is used to approximate the ideal controller for a spatially feedforward duct ANC problem. The nonrecursive part represents ...

    • State Space Implementation of the Algorithm of Mode Isolation 

      Michael V. Drexel; Jerry H. Ginsberg; Bassem R. Zaki (The American Society of Mechanical Engineers (ASME), 2003)
      The Algorithm of Mode Isolation (AMI) extracts modal properties from complex frequency response data. Previous work used classic undamped modes as the analytical framework for the algorithm. The ...

    • A Novel Semi-Active Multi-Modal Vibration Control Law for a Piezoceramic Actuator 

      Lawrence R. Corr; William W. Clark (The American Society of Mechanical Engineers (ASME), 2003)
      In this paper, a novel semi-active energy rate multi-modal vibration control technique is developed for a piezoceramic actuator coupled to a switching resistor/inductor shunt. The technique works ...

    • Reduction of Noise Inside a Cavity by Piezoelectric Actuators 

      I. Hagiwara; D. W. Wang; Q. Z. Shi; R. S. Rao (The American Society of Mechanical Engineers (ASME), 2003)
      A new analytical model is developed for the reduction of noise inside a cavity using distributed piezoelectric actuators. A modal coupling method is used to establish the governing equations ...

    • Damping in High Transient Motion 

      A. Al Majid; R. Dufour (The American Society of Mechanical Engineers (ASME), 2003)
      An original method for evaluating the dissipative effect in SDOF systems due to the transient phenomenon was presented in a previous article. This method based on the use of an additional ...

    • Bayesian Model Screening for the Identification of Nonlinear Mechanical Structures 

      Gaëtan Kerschen; François M. Hemez; Jean-Claude Golinval (The American Society of Mechanical Engineers (ASME), 2003)
      The development of techniques for identification and updating of nonlinear mechanical structures has received increasing attention in recent years. In practical situations, there is not necessarily ...

    • Investigation of Curved Polymeric Piezoelectric Active Diaphragms 

      Kelly C. Bailo; Diann E. Brei; Karl Grosh (The American Society of Mechanical Engineers (ASME), 2003)
      Piezoelectric active diaphragms hold promise as an alternative to using passive diaphragms driven by voice coils for sound generation and noise cancellation applications. This paper presents an ...

    • Propagation of Sound in Inhomogeneous Media: Exact, Transient Solutions in Curvilinear Geometries 

      P. Bala Subrahmanyam; Tim C. Lieuwen; R. I. Sujith (The American Society of Mechanical Engineers (ASME), 2003)
      Exact solutions for one-dimensional, transient acoustic wave propagation in curvilinear geometries with mean temperature variations are presented in this paper. These solutions are obtained by using ...

    • The Impact of Moments Near Discontinuities in Structural-Acoustic Systems 

      W. Steve Shepard (The American Society of Mechanical Engineers (ASME), 2003)
      The impact of a moment excitation on the vibrational and acoustical response of a fluid-loaded system containing a structural discontinuity is examined. The response metric of interest is the ...

    • Compatibility Equations in the Theory of Elasticity 

      Igor V. Andrianov; Jan Awrejcewicz (The American Society of Mechanical Engineers (ASME), 2003)
      It is shown by operational method that the boundary value problem of the theory of elasticity related to stresses, which can be reduced to three strains compatibility equations and to three ...

    • An Investigation of Coupled van der Pol Oscillators 

      Lesley Ann Low; Per G. Reinhall; Duane W. Storti (The American Society of Mechanical Engineers (ASME), 2003)
      In this paper we present findings from an investigation of synchronization of linearly diffusively coupled van der Pol oscillators. The stability boundary of the in-phase mode of two identical ...

    • Active Vibration Suppression With Time Delayed Feedback 

      Rifat Sipahi; Nejat Olgac (The American Society of Mechanical Engineers (ASME), 2003)
      Various active vibration suppression techniques, which use feedback control, are implemented on the structures. In real application, time delay can not be avoided especially in the feedback line ...

    • Coupled Slow and Fast Dynamics of Flow Excited Elastic Cable Systems 

      W.-J. Kim; Research Investigator; N. C. Perkins (The American Society of Mechanical Engineers (ASME), 2003)
      Analytical studies of vortex-induced vibration (VIV) of cables during lock-in have considered small amplitude and relatively fast dynamic responses about an equilibrium configuration. However, this ...

    • Study on the Dynamics of a Rotor in a Maneuvering Aircraft 

      Fusheng Lin; Guang Meng (The American Society of Mechanical Engineers (ASME), 2003)
      This paper shows how the dynamics of a rotor in a maneuvering aircraft changes according to the operation of the aircraft. The mathematical model of an unbalanced rotor system located in the ...

    • Vibration of Flex Circuits in Hard Disk Drives 

      J. A. Wickert (The American Society of Mechanical Engineers (ASME), 2003)
      A flex circuit connects the stationary electronic components in a hard disk drive to the rotating arm that carries the read/write heads and positions them above data tracks on the disk. Flex ...

    • Control of Self-Excited Vibration of a Rotor System With Active Gas Bearings 

      Jinhao Qiu; Junji Tani; Taekyu Kwon (The American Society of Mechanical Engineers (ASME), 2003)
      This paper presents an experimental study on the active control of self-excited vibrations in a rotor-bearing system supported on a pair of externally pressurized thrust bearings in the axial ...

    • Dynamic Stiffness Formulation and Its Application for a Combined Beam and a Two Degree-of-Freedom System 

      J. R. Banerjee; Professor of Structural Dynamics (The American Society of Mechanical Engineers (ASME), 2003)
      This paper is concerned with the dynamic stiffness formulation and its application for a Bernoulli-Euler beam carrying a two degree-of-freedom spring-mass system. The effect of a two degree-of-freedom ...

    • Effect of Damping on Asymmetric Systems 

      Paolo Gallina (The American Society of Mechanical Engineers (ASME), 2003)
      This paper addresses the phenomenon of the destabilizing effect of slight damping on asymmetric linear systems. Previous works had showed that the destabilizing effect, regarded for a long time ...