Journal of Computational and Nonlinear Dynamics: Recent submissions
Now showing items 1641-1660 of 1786
-
Spectral Collocation-Based Optimization in Parameter Estimation for Nonlinear Time-Varying Dynamical Systems
(The American Society of Mechanical Engineers (ASME), 2008)A constructive optimization algorithm using Chebyshev spectral collocation and quadratic programming is proposed for unknown parameter estimation in nonlinear time-varying dynamic system models to ... -
Implementation of Periodicity Ratio in Analyzing Nonlinear Dynamic Systems: A Comparison With Lyapunov Exponent
(The American Society of Mechanical Engineers (ASME), 2008)The present research intends to investigate the characteristics of the periodicity ratio and its implementation in analyzing the nonlinear behavior of dynamic systems governed by second-order ... -
Introduction of the Foot Placement Estimator: A Dynamic Measure of Balance for Bipedal Robotics
(The American Society of Mechanical Engineers (ASME), 2008)The goal of most bipedal robotics research is to develop methods of achieving a dynamically balanced gait. Most current approaches focus on maintaining the balance of the system. This paper ... -
On Nonlinear Dynamics and an Optimal Control Design to a Longitudinal Flight
(The American Society of Mechanical Engineers (ASME), 2008)In this work, we analyzed a bifurcational behavior of a longitudinal flight nonlinear dynamics, taking as an example the F-8 aircraft “Crusader.” We deal with an analysis of high angles of ... -
Translational Joints With Clearance in Rigid Multibody Systems
(The American Society of Mechanical Engineers (ASME), 2008)A computational methodology for dynamic description of rigid multibody systems with translational clearance joints is presented and discussed in this work. Over the past years, extensive work has ... -
A Spectral Method for Describing the Response of a Parametrically Excited System Under External Random Excitation
(The American Society of Mechanical Engineers (ASME), 2008)This paper describes an original approach for computing the stationary response of linear periodic time variant MDOF systems subjected to stationary stochastic external excitation. The proposed ... -
Stability Analysis of an Articulated Loading Platform in Regular Sea
(The American Society of Mechanical Engineers (ASME), 2008)Stability of the response of an articulated loading platform under regular wave, modeled as a SDOF nonlinear oscillator, is investigated. Relative velocity square drag force for harmonic wave ... -
A Modular Modeling Approach to Simulate Interactively Multibody Systems With a Baumgarte/Uzawa Formulation
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, a modular modeling approach of multibody systems adapted to interactive simulation is presented. This work is based on the study of the stability of two differential algebraic ... -
Finite-Time Controllability of Fractional-Order Systems
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, the conditions that lead to a system output remaining at zero with zero input are considered. It is shown that the initialization of fractional-order integrators plays a key ... -
Review of Contemporary Approaches for Constraint Enforcement in Multibody Systems
(The American Society of Mechanical Engineers (ASME), 2008)A hallmark of multibody dynamics is that most formulations involve a number of constraints. Typically, when redundant generalized coordinates are used, equations of motion are simpler to derive ... -
An Analytical Solution for Shear Stress Distributions During Oblique Elastic Impact of Similar Spheres
(The American Society of Mechanical Engineers (ASME), 2008)A new solution method for the oblique elastic impact of similar spheres with Coulomb friction is presented. The solution uses approximations of the shear stress distributions at each time step ... -
Review of Classical Approaches for Constraint Enforcement in Multibody Systems
(The American Society of Mechanical Engineers (ASME), 2008)A hallmark of multibody dynamics is that most formulations involve a number of constraints. Typically, when redundant generalized coordinates are used, equations of motion are simpler to derive ... -
Practical Tuning Rule Development for Fractional Order Proportional and Integral Controllers
(The American Society of Mechanical Engineers (ASME), 2008)This paper presents a new practical tuning method for fractional order proportional and integral (FO-PI) controller. The plant to be controlled is mainly first order plus delay time (FOPDT). ... -
Resolving the Sequence-Dependent Stiffness of DNA Using Cyclization Experiments and a Computational Rod Model
(The American Society of Mechanical Engineers (ASME), 2008)Structural deformations of DNA play a central role in many biological processes, including gene expression. The structural deformations are sensitive to the material properties of the molecule, ... -
Efficient and Robust Approaches to the Stability Analysis of Large Multibody Systems
(The American Society of Mechanical Engineers (ASME), 2008)Linearized stability analysis methodologies that are applicable to large scale, multiphysics problems are presented in this paper. Two classes of closely related algorithms based on a partial ... -
Fractional Order Filter Enhanced LQR for Seismic Protection of Civil Structures
(The American Society of Mechanical Engineers (ASME), 2008)This study presents fractional order filters to enhance the performance of the conventional linear quadratic regulator (LQR) method for optimal robust control of a simple civil structure. The ... -
Field Programmable Analog Array Implementation of Noninteger Order PIλDμ Controller
(The American Society of Mechanical Engineers (ASME), 2008)Recently, a renewed interest has been devoted to noninteger, or fractional, order systems. This is due to the fact that they well model a lot of physical systems and can be usefully applied ... -
Modeling of Electrochemical Double Layer Capacitors by Means of Fractional Impedance
(The American Society of Mechanical Engineers (ASME), 2008)The application of the fractional calculus for modeling electrochemical double layer capacitors is a novel way to get simpler and precise models. On using the impedance spectroscopy method, ... -
Identifying a Transfer Function From a Frequency Response
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, the classic Levy identification method is reviewed and reformulated using a complex representation. This new formulation addresses the well known bias of the classic method at ... -
Nonlinear Analysis of Road Traffic Flows in Discrete Dynamical System
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, we investigate the dynamic behavior of road traffic flows and study if chaotic phenomena exist in a traffic flow dynamic system. Two discrete dynamic models are proposed, which ...