Journal of Vibration and Acoustics: Recent submissions
Now showing items 201-220 of 3913
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Dynamic Analysis of a Curved Beam With Tuning of Elastic Modulus and Mass Density in Circumferential Direction
(The American Society of Mechanical Engineers (ASME), 2022)Deformation and stress fields in a curved beam can be tailored by changing its mechanical properties such as the elastic modulus/mass density, which is typically done using functionally graded materials (FGM). Such functional ... -
An Approach to Modeling Percussive Drilling Systems
(The American Society of Mechanical Engineers (ASME), 2022)A framework for modeling the transient response of percussive drilling systems is presented. The proposed approach is based on the distributed transfer function method (DTFM), which is a semi-analytical modeling technique. ... -
First-Passage Problem in Random Vibrations With Radial Basis Function Neural Networks
(The American Society of Mechanical Engineers (ASME), 2022)The first-passage time probability plays an important role in the reliability assessment of dynamic systems in random vibrations. To find the solution of the first-passage time probability is a challenging task. The ... -
Tonal Noise Suppression of an Underexpanded Orifice Jet Upon Impingement Over Corrugated Geometries
(The American Society of Mechanical Engineers (ASME), 2022)The current study investigates the noise generation of an orifice jet upon impingement over different corrugated geometries for different nozzle pressure ratios (NPRs). Semi-circular corrugations of different pitch lengths ... -
Experimental Study of Frequency Control of LaSMP Laminated Beams
(The American Society of Mechanical Engineers (ASME), 2022)Light-activated shape memory polymers (LaSMPs) exhibit stiffness variations when exposed to ultraviolet (UV) lights. Thus, LaSMP could manipulate structural frequencies with UV light exposures when laminated on structures. ... -
Unique Loss Factor Images for Complex Dynamic Systems
(The American Society of Mechanical Engineers (ASME), 2022)Over the past century, a number of scalar metrics have been proposed to measure the damping of a complex system. The present work explores these metrics in the context of finite element models. Perhaps the most common is ... -
Stability and Robustness Analysis of Quasi-Periodic System Subjected to Uncertain Parametric Excitations and Nonlinear Perturbations
(The American Society of Mechanical Engineers (ASME), 2022)In this work, the asymptotic stability bounds are identified for a class of linear quasi-periodic dynamical systems with stochastic parametric excitations and nonlinear perturbations. The application of a Lyapunov–Perron ... -
Energy Transfer of an Axially Loaded Beam With a Parallel-Coupled Nonlinear Vibration Isolator
(The American Society of Mechanical Engineers (ASME), 2022)Traditional vibration isolation of satellite instruments has an inherent limitation that low-frequency vibration suppression leads to structural instability. This paper explores a parallel-coupled quasi-zero stiffness (QZS) ... -
Numerical Investigations on Static and Rotordynamic Characteristics for Two Types of Liquid Hole-Pattern Seals With Tilted Cavities
(The American Society of Mechanical Engineers (ASME), 2022)Two types of liquid hole-pattern seals with axially oblique (A-HPS) or circumferentially oblique (C-HPS) hole cavities are designed. To evaluate the leakage and rotordynamic characteristics of the liquid hole-pattern seals, ... -
Experimental Implementation of Energy Closure Analysis for Reduced Order Modeling
(The American Society of Mechanical Engineers (ASME), 2022)Reduced order models (ROMs) provide an efficient, kinematically condensed representation of computationally expensive high-dimensional dynamical systems; however, their accuracy depends crucially on the accurate estimation ... -
Primary Parametric Amplification in a Weakly Forced Mathieu Equation
(The American Society of Mechanical Engineers (ASME), 2022)The present study deals with the response of a forced Mathieu equation with damping, with weak harmonic direct excitation at the same frequency as the parametric excitation. A second-order perturbation analysis using the ... -
Design and Application of Double-Parallelograms-Based Tuned Mass Damper for Low-Frequency Vibration Absorption
(The American Society of Mechanical Engineers (ASME), 2022)Low-frequency vibration suppression is challenging in practical engineering problems due to the harsh requirement for vibration reduction devices, which requires constant low stiffness over a wide amplitude range. A passive ... -
Dynamic Stress Concentration Factor Around a Spherical Nanocavity Under a Plane P-Wave
(The American Society of Mechanical Engineers (ASME), 2022)Scattering of an elastic wave by cavities yields dynamic stress concentration around the cavities. When the characteristic size of the cavities shrinks to the nanometer scale, the surface effect becomes prominent. Based ... -
Exact Solution of a Class of Non-Circular Vibrating Membranes
(The American Society of Mechanical Engineers (ASME), 2022)Saint-Venant’s method to solve the Poisson equation is applied to the Helmholtz equation which governs membrane vibration. A family of non-circular membrane shapes with N-fold rotational symmetry is presented. Membrane ... -
Pseudospectral Continuation for Aeroelastic Stability Analysis
(The American Society of Mechanical Engineers (ASME), 2022)This technical note is concerned with aeroelastic flutter problems: the analysis of aeroelastic systems undergoing airspeed-dependent dynamic instability. Existing continuation methods for parametric stability analysis are ... -
Acoustic Wave Focusing From Reconfigurable Acoustic Arrays Based on a Bricard-Miura Synthesis
(The American Society of Mechanical Engineers (ASME), 2022)Recent studies have shown that reconfigurable acoustic arrays inspired from rigid origami structures can be used to radiate and focus acoustic waves. Yet, there is a need for exploration of single-degree-of-freedom deployment ... -
Finite Cross-Section Method for Mode Shape Recognition of Highly Coupled Beam-Type Structures
(The American Society of Mechanical Engineers (ASME), 2022)The mode shapes of beam-type structures, such as aircraft wings and wind turbine blades, involve a high degree of coupling between bending and torsional deformations. In the case of wind turbine blades, different types of ... -
Phononic Materials for Pulse Shaping in Elastic Waveguides Motivated by Shock Testing
(The American Society of Mechanical Engineers (ASME), 2022)Mechanical shock events experienced by electronic systems can be reproduced in the laboratory using Hopkinson bar tests. In such tests, a projectile strikes a rod, creating a pulse which then travels into the electronic ... -
Estimation of Energy Pumping Time in Bistable Nonlinear Energy Sink and Experimental Validation
(The American Society of Mechanical Engineers (ASME), 2022)The bistable nonlinear energy sink (NES) shows high efficiency in mitigating vibration through targeted energy transfer (TET). It performs well in low- and high-energy input cases, whereas, for a cubic NES, TET occurs only ... -
Contact Nonlinearity in Indenter–Foam Dampers
(The American Society of Mechanical Engineers (ASME), 2022)In this paper, the nonlinear response of indenter–foam dampers is characterized. Those dampers consist of indenters pressed on open-cell foams swollen with wetting liquids. Recently, the authors identified the dominant ...