Journal of Computational and Nonlinear Dynamics: Recent submissions
Now showing items 561-580 of 1786
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Nonlinear Vibration Analysis of a Flexible Rotor Supported by a Journal Bearing Considering Journal Angular Motion
(The American Society of Mechanical Engineers (ASME), 2020)The effect of bearing length to diameter (L/D) ratio and large disk position on nonlinear vibration of a flexible rotor-bearing system was investigated. The rotor consisted of a shaft modeled by one-dimensional finite ... -
Simultaneous Resonance and Anti-Resonance in Dynamical Systems Under Asynchronous Parametric Excitation
(The American Society of Mechanical Engineers (ASME), 2020)Since the discovery of parametric anti-resonance, parametric excitation has also become more prominent for its stabilizing properties. While resonance and anti-resonance are mostly studied individually, there are systems ... -
Nonlinear Dynamic Analysis of a Rigid–Flexible Gear Transmission Considering Geometric Eccentricities
(The American Society of Mechanical Engineers (ASME), 2020)Nonlinear vibration, a main factor affecting the dynamic stability, widely exists in the transmission system. In addition, geometric eccentricities caused by the manufacturing errors are inevitable in the gear transmission ... -
Modification of the Infinite-Dimensional Neutral-Type Time-Delay Dynamic Model for the Coupled Axial–Torsional Vibrations in Drill Strings With a Drag Bit
(The American Society of Mechanical Engineers (ASME), 2020)Drill strings are subjected to complex coupled dynamics. Therefore, accurate dynamic modeling, which can represent the physical behavior of real drill strings, is of great importance for system analysis and control. The ... -
Explicit Aerodynamic Model Characterization of a Multirotor Unmanned Aerial Vehicle in Quasi-Steady Flight
(The American Society of Mechanical Engineers (ASME), 2020)In the last years, the research on unmanned aerial systems (UASs) has shown a marked growth and the models to simulate UASs have been deeply studied. Although onboard controller algorithms have increased their complexity, ... -
Semihyper-Reduction for Finite Element Structures With Nonlinear Surface Loads on the Basis of Stress Modes
(The American Society of Mechanical Engineers (ASME), 2020)Model reduction via projection is a common method to accelerate time integration of finite element (FE) structures by reducing the number of degrees-of-freedom (DOFs). However, nonlinear state-dependent surface loads are ... -
Nonsmooth Dynamics of a Gear–Wheelset System of Railway Vehicles Under Traction/Braking Conditions
(The American Society of Mechanical Engineers (ASME), 2020)Gear–wheelset system is a crucial substructure in railway vehicles which affects the operation safety and system reliability, especially in the process of traction and braking conditions. Unlike the general gear transmission ... -
Design and Analysis of a Geometrically Nonlinear Dynamic Vibration Absorber
(The American Society of Mechanical Engineers (ASME), 2020)The design and optimization of a nonlinear dynamic vibration absorber based on a snap-through truss geometry is investigated. The effect of absorber's parameters on primary system (PS) vibration amplitude reduction and ... -
Numerical and Dynamic Errors Analysis of Planar Multibody Mechanical Systems With Adjustable Clearance Joints Based on Lagrange Equations and Experiment
(The American Society of Mechanical Engineers (ASME), 2020)For theoretical study and engineering application, it is necessary to provide an accurate and simple dynamical model to simulate the multibody mechanical systems with clearance joints and it is also the subject of this ... -
Parameter Identification on Flexible Multibody Models Using the Adjoint Variable Method and Flexible Natural Coordinate Formulation
(The American Society of Mechanical Engineers (ASME), 2020)This work proposes a methodology for in situ parameter identification using system-level measurements of (flexible) multibody systems, opposed to dedicated component-level identification. The sensitivity information employed ... -
Nonlinear Stability of Rail Vehicles Traveling on Vibration-Attenuating Slab Tracks
(The American Society of Mechanical Engineers (ASME), 2020)Various vibration-attenuating slab tracks have been introduced into urban railways to minimize the negative effects of train-induced ground vibration and noise. However, compared with traditional slab tracks, vibration-attenuating ... -
Dynamic Analysis of a Stochastic Predator–Prey Model With Crowley–Martin Functional Response, Disease in Predator, and Saturation Incidence
(The American Society of Mechanical Engineers (ASME), 2020)This work aims to study some dynamical properties of a stochastic predator–prey model, which is considered under the combination of Crowley–Martin functional response, disease in predator, and saturation incidence. First, ... -
Numerical Solution of Nonlinear Space–Time Fractional-Order Advection–Reaction–Diffusion Equation
(The American Society of Mechanical Engineers (ASME), 2020)In this article, a new algorithm is proposed to solve the nonlinear fractional-order one-dimensional solute transport system. The spectral collocation technique is considered with the Fibonacci polynomial as a basis function ... -
Robust Fixed-Time Integral Sliding Mode Control of a Nonlinear Hydraulic Turbine Regulating System
(The American Society of Mechanical Engineers (ASME), 2020)The hydraulic turbine regulating system (HTRS) plays an important role in the safe and stable operation of hydropower stations. In this paper, a fixed-time integral sliding mode controller (FTISMC) is designed to make the ... -
Well-Posed Formulations for Nonholonomic Mechanical System Dynamics
(The American Society of Mechanical Engineers (ASME), 2020)Four formulations of nonholonomic mechanical system dynamics, with both holonomic and differential constraints, are presented and shown to be well posed; i.e., solutions exist, are unique, and depend continuously on problem ... -
Dynamics at Infinity and Existence of Singularly Degenerate Heteroclinic Cycles in Maxwell–Bloch System
(The American Society of Mechanical Engineers (ASME), 2020)In this paper, global dynamics of the Maxwell–Bloch system is discussed. First, the complete description of its dynamic behavior on the sphere at infinity is presented by using the Poincaré compactification in R3. Second, ... -
Long Term Dynamic Simulation of a Stem Cell Nucleus
(The American Society of Mechanical Engineers (ASME), 2020)Biomolecular simulations are computationally expensive. Simulating time histories larger than seconds remain elusive even with the help of supercomputers. Biological phenomena are multiscale in nature. The dynamics range ... -
Analytical and Numerical Solutions of the Riccati Equation Using the Method of Variation of Parameters. Application to Population Dynamics
(The American Society of Mechanical Engineers (ASME), 2020)This work presents new approximate analytical solutions for the Riccati equation (RE) resulting from the application of the method of variation of parameters. The original equation is solved using another RE explicitly ... -
Statistics of Lifetimes for Transient Bursting States in Coupled Noisy Excitable Systems
(The American Society of Mechanical Engineers (ASME), 2020)In ensembles of oscillators, intrinsic fluctuations often enable nontrivial dynamics in seemingly simple situations. One of such effects occurs in coupled FitzHugh–Nagumo oscillators subjected to external noise. At the ... -
Energy Harvesting for System of Coupled Oscillators Under External Excitation in the Vicinity of Resonance 1:1
(The American Society of Mechanical Engineers (ASME), 2020)Vibration energy is abundantly present in many natural and artificial systems and can be assembled by various devices, mainly employing the benefits of the piezo-electric and electromagnetic phenomena. In the present ...