Results 11 to 20 of about 1,766,181 (306)

Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement

open access: yesApplied Sciences, 2020
High reliability is the basic requirement of aerospace pyrotechnic devices. Traditional reliability evaluation methods require a lot of tests, which become too expensive; therefore, the small-sample evaluation method is needed to reduce the cost.
Yubo Zhu   +3 more
doaj   +1 more source

Multidisciplinary modeling and simulation framework for launch vehicle system dynamics and control

open access: yesActa Astronautica, 2020
Future concepts and key technologies for reusable launch vehicles are currently investigated by the DLR project Akira , focusing on vertical takeoff and horizontal landing (VTHL), as well as horizontal takeoff and horizontal landing (HTHL) concepts ...
Lâle Evrim Briese   +2 more
semanticscholar   +1 more source

The effect of 3D wear state of wheel polygon on wheel–rail system dynamics

open access: yesVehicle System Dynamics, 2021
Wheel wear is a natural phenomenon of wheel–rail rolling contact during vehicle operation. The non-uniform wear in lateral and circumferential directions is normally occurred on wheels. The lateral non-uniform wear will lead to the unexpected hollow wear
D. Cui   +4 more
semanticscholar   +1 more source

Dynamic Analysis of Spatial Truss Structures Including Sliding Joint Based on the Geometrically Exact Beam Theory and Isogeometric Analysis

open access: yesApplied Sciences, 2020
With increasing of the size of spatial truss structures, the beam component will be subjected to the overall motion with large deformation. Based on the local frame approach and the geometrically exact beam theory, a beam finite element, which can ...
Zhipei Wu   +6 more
doaj   +1 more source

Simulation of Torsional Vibration of Driven Railway Wheelsets Respecting the Drive Control Response on the Vibration Excitation in the Wheel-Rail Contact Point

open access: yesVibration, 2020
For the stability verification of railway wheelsets in Germany, dynamic torsional stresses must be respected as they affect the axle and press fit stability of a wheelset. These dynamic stresses are applied to a wheelset by torsional vibration.
Fritz Trimpe   +3 more
doaj   +1 more source

Dynamic modeling of a metro vehicle considering the motor–gearbox transmission system under traction conditions [PDF]

open access: yesMechanical Sciences, 2022
As a vital means of transportation to alleviate urban traffic congestion, the metro vehicle has been developing rapidly in China during recent years. For the violent vibration and shock under the frequent switches between traction and braking conditions,
T. Zhang   +5 more
doaj   +1 more source

Proposal for objective evaluation criteria for steering feel by steering torque sinusoidal input

open access: yesNihon Kikai Gakkai ronbunshu, 2017
The steering feel is an important technical problem for handling and drivability of driver-vehicle system and various kinds of studies have been conducted.
Ikuo KUSHIRO, Keisuke SUZUKI
doaj   +1 more source

Analysis for global characteristics of Lyapunov exponents in vehicle plane motion system

open access: yesScientific Reports, 2022
In the field of vehicle system dynamics, it is significant to propose an appropriate quantitative indicator for system stability or dynamics characteristics.
Fanyu Meng   +4 more
doaj   +1 more source

Analysis for vehicle dynamics and steering system parameters effect on steering characteristics of steering feel (Fundamental study for performance design of objective target on steering feel)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
The purpose of this paper is to clarify the effect of vehicle dynamics and steering system parameter on steering feel. The objective evaluation method for on-center and off-center evaluates steering effort, steering torque gradient, torque hysteresis and
Ikuo KUSHIRO, Keisuke SUZUKI
doaj   +1 more source

Real-Time Modeling of Vehicle’s Longitudinal-Vertical Dynamics in ADAS Applications

open access: yesActuators, 2022
The selection of an appropriate method for modeling vehicle dynamics heavily depends on the application. Due to the absence of human intervention, the demand for an accurate and real-time model of vehicle dynamics for intelligent control increases for ...
Wei Dai   +4 more
doaj   +1 more source

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