Journal of Computational and Nonlinear Dynamics: Recent submissions
Now showing items 1441-1460 of 1786
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On the Dynamics of Two Mutually-Coupled, Electromagnetically-Actuated Microbeam Oscillators
(The American Society of Mechanical Engineers (ASME), 2012)This work describes the modeling, analysis, predictive design, and control of self-excited oscillators, and associated arrays, founded upon electromagnetically-actuated microbeams. The study specifically ... -
Intrinsic Finite Element Modeling of Nonlinear Dynamic Response in Helical Springs
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents an efficient intrinsic finite element approach for modeling and analyzing the forced dynamic response of helical springs. The finite element treatment employs intrinsic curvature ... -
Response and Stability Analysis of Periodic Delayed Systems With Discontinuous Distributed Delay
(The American Society of Mechanical Engineers (ASME), 2012)In this paper, the analysis of delay differential equations with periodic coefficients and discontinuous distributed delay is carried out through discretization by the Chebyshev spectral continuous ... -
Feedback Linearizing Two-Input Control Systems
(The American Society of Mechanical Engineers (ASME), 2012)We compute explicitly feedback linearizing coordinates for a two-input control system without solving the corresponding PDEs. Our algorithm is based on a successive application of the Frobenius’ ... -
Galerkin Approximations for Higher Order Delay Differential Equations
(The American Society of Mechanical Engineers (ASME), 2012)In this work, Galerkin approximations are developed for a system of n first order nonlinear delay differential equations (DDEs) and also for an nth order nonlinear scalar DDE. The DDEs are ... -
Dynamic Response of Multibody Systems with Multiple Clearance Joints
(The American Society of Mechanical Engineers (ASME), 2012)A general methodology for the dynamic modeling and analysis of planar multibody systems with multiple clearance joints is presented. The inter-connecting bodies that constitute a real physical ... -
Swing Dynamics and Input-Shaping Control of Human-Operated Double-Pendulum Boom Cranes
(The American Society of Mechanical Engineers (ASME), 2012)Boom cranes are used for numerous material-handling and manufacturing processes in factories, shipyards, and construction sites. All cranes lift their payloads by hoisting them up using overhead ... -
Nonlinear Control of Hyperchaotic System, Lie Derivative, and State Space Linearization
(The American Society of Mechanical Engineers (ASME), 2012)State space linearization using the concept of Brunovsky form and Lie derivative is applied to the case of a Hyperchaotic Lorentz System. It is observed that the necessary and sufficient ... -
On Delayed Logistic Equation Driven by Fractional Brownian Motion
(The American Society of Mechanical Engineers (ASME), 2012)In this paper we use the fractional stochastic integral given by Carmona et al. (2003, “Stochastic Integration With Respect to Fractional Brownian Motion,” Ann. I.H.P. Probab. Stat., 39 (1), ... -
Different Types of Instabilities and Complex Dynamics in Reaction-Diffusion Systems With Fractional Derivatives
(The American Society of Mechanical Engineers (ASME), 2012)In this article we analyze conditions for different types of instabilities and complex dynamics that occur in nonlinear two-component fractional reaction-diffusion systems. It is shown that the ... -
Design, Simulation, and Testing of Energy Harvesters With Magnetic Suspensions for the Generation of Electricity From Freight Train Vibrations
(The American Society of Mechanical Engineers (ASME), 2012)The constant spread of commercial trades on railways demand development of alternative diagnostic systems, which are suitable to applications without electric supply and convenient for the industrial ... -
Influence of Track Irregularities in the Catenary-Pantograph Dynamic Interaction
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents an advanced pantograph-catenary-vehicle-track model, which allows us to analyze the vertical dynamics of the complete system. The developed model is able to evaluate the ... -
Nonlinear Train-Bridge Lateral Interaction Using a Simplified Wheel-Rail Contact Method Within a Finite Element Framework
(The American Society of Mechanical Engineers (ASME), 2012)The evaluation of running safety of railway vehicles on viaducts requires the study of lateral dynamics for the coupled vehicle-bridge system. This includes the structural deformation of the ... -
Numerical and Hardware-In-the-Loop Tools for the Design of Very High Speed Pantograph-Catenary Systems
(The American Society of Mechanical Engineers (ASME), 2012)To be competitive with other transport means for a wider distance range, high-speed trains need to increase their revenue service speed. Due to this need, improving the pantograph-catenary ... -
Numerical Procedure for Dynamic Simulation of Two-Point Wheel/Rail Contact and Flange Climb Derailment of Railroad Vehicles
(The American Society of Mechanical Engineers (ASME), 2012)In this investigation, a numerical procedure for wheel/rail contact problems in the analysis of curve negotiation of railroad vehicles is developed using constraint/elastic contact approach. In ... -
A Discrete Element Approach to Model Breakable Railway Ballast
(The American Society of Mechanical Engineers (ASME), 2012)A discrete element approach to assess degradation processes in ballast beds is presented. Firstly, a discrete element model describing strength and failure of strong rock is introduced. For this ... -
Description of Methods for the Eigenvalue Analysis of Railroad Vehicles Including Track Flexibility
(The American Society of Mechanical Engineers (ASME), 2012)The stability analysis of railroad vehicles using eigenvalue analysis can provide essential information about the stability of the motion, ride quality, or passengers’ comfort. The eigenvalue ... -
Estimation of Dynamic Contact Force Between a Pantograph and Catenary Using the Finite Element Method
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents a model of the catenary and pantograph and an analysis of their dynamic interaction, using the finite element method. An analytical procedure to calculate the length of ... -
Multiple Pantograph Interaction With Catenaries in High-Speed Trains
(The American Society of Mechanical Engineers (ASME), 2012)The limitation on the top velocity of high-speed trains concerns the ability to supply the proper amount of energy required to run the engines through the catenary-pantograph interface. Due to ... -
Development of a Model for the Prediction of Wheel and Rail Wear in the Railway Field
(The American Society of Mechanical Engineers (ASME), 2012)The wear prediction at the wheel-rail interface is a fundamental problem in the railway field, mainly correlated to the planning of maintenance interventions, vehicle stability, and the possibility ...