Results 11 to 20 of about 1,186,412 (296)

A novel method to derive wheel / rail wear coefficient in the field using multi-body dynamics

open access: yesNihon Kikai Gakkai ronbunshu, 2021
To predict the wheel/rail profile wear theoretically with dynamic model of the vehicle-track systems, the wear coefficient is necessary and these parameters are generally derived from laboratory tests, such as twin disk test or a pin-on-disk test ...
Satoshi HARA   +3 more
doaj   +1 more source

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

open access: yesMachines, 2022
In the switch rail section of a high-speed turnout, the wheel–rail lateral impact of the forepart of the curved switch rail is the most important factor affecting the passing performance.
Bo Liao, Yanyun Luo
doaj   +1 more source

Non-smooth Newton Methods for Deformable Multi-body Dynamics [PDF]

open access: yesACM Transactions on Graphics, 2019
We present a framework for the simulation of rigid and deformable bodies in the presence of contact and friction. Our method is based on a non-smooth Newton iteration that solves the underlying nonlinear complementarity problems (NCPs) directly. This approach allows us to support nonlinear dynamics models, including hyperelastic deformable bodies and ...
Miles Macklin   +5 more
openaire   +3 more sources

Development of an Educational Code of Deriving Equations of ‎Motion and Analyzing Dynamic Characteristics of Multibody ‎Closed Chain Systems using GNU Octave for a Beginner [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2022
In this study, an automatic GNU Octave code, a free high-level language, for the educational purposes was developed to derive equations of motion and constrain equations of a multibody closed chain system and to calculate the response of the system.
Y.H. Park
doaj   +1 more source

Experimental and Numerical Investigation of Solar Panels Deployment with Tape Spring Hinges Having Nonlinear Hysteresis with Friction Compensation

open access: yesApplied Sciences, 2020
In this work, experimental and numerical investigation on the deployment of solar panels with tape spring (TS) hinges showing complex nonlinear hysteresis behavior caused by the snap-through buckling was conducted.
Dong-Yeon Kim   +4 more
doaj   +1 more source

Adaptive fuzzy sliding mode control for high‐speed train using multi‐body dynamics model

open access: yesIET Intelligent Transport Systems, 2023
In this paper, an equivalent multi‐body dynamics model of high‐speed train with uncertain parameter is established. Based on this detailed model and neural network minimum parameter learning algorithm, an adaptive sliding mode control method is designed ...
Youxing Guo   +3 more
doaj   +1 more source

Study on Beat Vibration of a High Temperature Superconducting EDS Maglev Vehicle at Low Speed

open access: yesApplied Sciences, 2023
Vertical displacement acceleration and the pitch angle record produce the phenomenon of beat vibration when testing a 200 m electro-dynamic suspension (EDS) magnetic levitation (maglev) test vehicle with high-temperature superconducting (HTS) at the CRRC
Qing-Song Yu   +5 more
doaj   +1 more source

REBOUND: An open-source multi-purpose N-body code for collisional dynamics [PDF]

open access: yes, 2011
REBOUND is a new multi-purpose N-body code which is freely available under an open-source license. It was designed for collisional dynamics such as planetary rings but can also solve the classical N-body problem.
Applegate   +20 more
core   +1 more source

Multi-body modelling and adaptive control of a re-configurable uninhabited airship

open access: yesDrone Systems and Applications, 2022
This paper presents pitch control of an uninhabited airship using changes in center of gravity. Changes in center of gravity are achieved by controlling the position of a movable gondola along a rigid keel fixed to the bow of the helium envelope.
Gilmar Tuta-Navajas, Eric Lanteigne
doaj   +1 more source

Coupling analysis of transient aerodynamic and dynamic response of cars in overtaking under crosswinds

open access: yesEngineering Applications of Computational Fluid Mechanics, 2020
The aerodynamic performance and dynamic response of two cars in overtaking maneuver under crosswind were investigated using a multi-car two-way coupling method.
Chuqi Su   +5 more
doaj   +1 more source

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