Journal of Computational and Nonlinear Dynamics: Recent submissions
Now showing items 901-920 of 1786
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A Piecewise Nonpolynomial Collocation Method for Fractional Differential Equations
(The American Society of Mechanical Engineers (ASME), 2017)Since the solutions of the fractional differential equations (FDEs) have unbounded derivatives at zero, their numerical solutions by piecewise polynomial collocation method on uniform meshes will lead to poor convergence ... -
Stability of Damped Skateboards Under Human Control
(The American Society of Mechanical Engineers (ASME), 2017)A simple mechanical model of the skateboard–skater system is analyzed, in which a linear proportional-derivative (PD) controller with delay is included to mimic the effect of human control. The equations of motion of the ... -
Green’s Function Iterative Approach for Solving Strongly Nonlinear Oscillators
(The American Society of Mechanical Engineers (ASME), 2017)In this paper, a Green’s function based iterative algorithm is proposed to solve strong nonlinear oscillators. The method’s essential part is based on finding an appropriate Green’s function that will be incorporated into ... -
Flutter Control of a Two-Degrees-of-Freedom Airfoil Using a Nonlinear Tuned Vibration Absorber
(The American Society of Mechanical Engineers (ASME), 2017)The influence of a nonlinear tuned vibration absorber (NLTVA) on the airfoil flutter is investigated. In particular, its effect on the instability threshold and the potential subcriticality of the bifurcation is analyzed. ... -
Nonlinear Reduced-Order Models for Aerodynamic Lift of Oscillating Airfoils2
(The American Society of Mechanical Engineers (ASME), 2017)For the present study, setting Strouhal number as the control parameter, we perform numerical simulations for the flow over oscillating NACA-0012 airfoil at a Reynolds number of 1000. This study reveals that aerodynamic ... -
A New Numerical Method for Solving Nonlinear Fractional Fokker–Planck Differential Equations
(The American Society of Mechanical Engineers (ASME), 2017)The nonlinear fractional-order Fokker–Planck differential equations have been used in many physical transport problems which take place under the influence of an external force filed. Therefore, high-accuracy numerical ... -
A Simple Shear and Torsion-Free Beam Model for Multibody Dynamics
(The American Society of Mechanical Engineers (ASME), 2017)This paper describes a very simple beam model, amenable to be used in multibody applications, for cases where the effects of torsion and shear are negligible. This is the case of slender rods connecting different parts of ... -
Forward Static Optimization in Dynamic Simulation of Human Musculoskeletal Systems: A Proof-of-Concept Study
(The American Society of Mechanical Engineers (ASME), 2017)Static optimization (SO) has been used extensively to solve the muscle redundancy problem in inverse dynamics (ID). The major advantage of this approach over other techniques is the computational efficiency. This study ... -
A Modified Two-Timescale Incremental Harmonic Balance Method for Steady-State Quasi-Periodic Responses of Nonlinear Systems
(The American Society of Mechanical Engineers (ASME), 2017)A modified two-timescale incremental harmonic balance (IHB) method is introduced to obtain quasi-periodic responses of nonlinear dynamic systems with combinations of two incommensurate base frequencies. Truncated Fourier ... -
Resonance Responses of Geometrically Imperfect Functionally Graded Extensible Microbeams
(The American Society of Mechanical Engineers (ASME), 2017)This paper aims at analyzing the size-dependent nonlinear dynamical behavior of a geometrically imperfect microbeam made of a functionally graded (FG) material, taking into account the longitudinal, transverse, and rotational ... -
Vibrations of a Simply Supported Cross Flow Heat Exchanger Tube With Axial Load and Loose Supports
(The American Society of Mechanical Engineers (ASME), 2017)In this work, a mathematical model is developed for simulating the vibrations of a single flexible cylinder under crossflow. The flexible tube is subjected to an axial load and has loose supports. The equation governing ... -
Adaptive Semi-Implicit Integrator for Articulated Mechanical Systems
(The American Society of Mechanical Engineers (ASME), 2017)This paper concerns the dynamic simulation of constrained mechanical systems in the context of real-time applications and stable integrators. The goal is to adaptively find a balance between the stability of an over-damped ... -
An Efficient Numerical Simulation for Solving Dynamical Systems With Uncertainty
(The American Society of Mechanical Engineers (ASME), 2017)In a wide range of real-world physical and dynamical systems, precise defining of the uncertain parameters in their mathematical models is a crucial issue. It is well known that the usage of fuzzy differential equations ... -
Estimation of Maximum Finger Tapping Frequency Using Musculoskeletal Dynamic Simulations
(The American Society of Mechanical Engineers (ASME), 2017)A model for forward dynamic simulation of the rapid tapping motion of an index finger is presented. The finger model was actuated by two muscle groups: one flexor and one extensor. The goal of this analysis was to estimate ... -
Enhancing the Weak Signal With Arbitrary High-Frequency by Vibrational Resonance in Fractional-Order Duffing Oscillators
(The American Society of Mechanical Engineers (ASME), 2017)When the traditional vibrational resonance (VR) occurs in a nonlinear system, a weak character signal is enhanced by an appropriate high-frequency auxiliary signal. Here, for the harmonic character signal case, the frequency ... -
Energy Straggling Function by Fα-Calculus
(The American Society of Mechanical Engineers (ASME), 2017)In this manuscript, we have used the recently developed Fα-calculus to calculate the energy straggling function through the fractal distributed structures. We have shown that such a fractal structure of space causes the ... -
Stability of the Size-Dependent and Functionally Graded Curvilinear Timoshenko Beams
(The American Society of Mechanical Engineers (ASME), 2017)The size-dependent model is studied based on the modified couple stress theory for the geometrically nonlinear curvilinear Timoshenko beam made from a functionally graded material having its properties changed along the ... -
Rail Passenger Vehicle Crashworthiness Simulations Using Multibody Dynamics Approaches
(The American Society of Mechanical Engineers (ASME), 2017)Multibody dynamics approaches have nowadays been an essential part in examining train crashworthiness. A typical passenger train structure has been investigated on its crashworthiness using three-dimensional (3D) models ... -
Special Issue: Nonlinear Dynamics: Models, Behavior, and Techniques
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Parallel Computing Scheme for Three-Dimensional Long Train System Dynamics
(The American Society of Mechanical Engineers (ASME), 2017)Simulations of three-dimensional train system dynamics for long freight railway trains with consideration being given to all degrees-of-freedom of all essential components of all vehicles have not been reported due to the ...