Results 101 to 110 of about 2,976 (212)

Fatigue analysis of catenary contact wires for high speed trains [PDF]

open access: yes, 2011
The fatigue fracture is one of the most critical failures which may occur on the high speed network because it is undetectable and it has a huge impact on traffic disruption.
BALMES, Etienne   +3 more
core  

Analysis on exponential stability of hybrid pantograph stochastic differential equations with highly nonlinear coefficients [PDF]

open access: yes, 2015
This paper discusses exponential stability of solutions for highly nonlinear hybrid pantograph stochastic differential equations (PSDEs). Two criteria are proposed to guarantee exponential stability of the solution.
Hu, Liangjian   +3 more
core   +1 more source

FENet: A Physics‐Informed Dynamics Prediction Model of Pantograph‐Catenary Systems in Electric Railway

open access: yesIET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.
In this manuscript, we proposed physics‐informed surrogate model, called FENet, for the first time to solve the interaction of pantograph‐catenary system. In recent years, much progress has been achieved in PCS modelling solutions. Existing solutions, however, suffer from two significant limitations: 1) An urgent concern arises regarding the ...
Wenping Chu   +3 more
wiley   +1 more source

Some properties of the functional equation ϕ(x)=f(x)+∫0λxg(x,y,ϕ(y))dy

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
A discussion is given of some of the properties of the functional Volterra Integral equation ϕ(x)=f(x)+∫0λxg(x,y,ϕ(y))dy. and of the corresponding multidimensional equation.
Li. G. Chambers
doaj   +1 more source

Introduction of variability in pantograph-catenary dynamic simulations [PDF]

open access: yes, 2013
Currently, pantograph-catenary dynamic simulations codes are mainly based on deterministic approaches. However, the contact force between catenary and pantograph depends on many key parameters that are not always quantified precisely.
BALMES, Etienne   +3 more
core   +3 more sources

Total Cost of Ownership of Electric Vehicles: A Synthesis of Critical Factors

open access: yesThe Journal of Engineering, Volume 2025, Issue 1, January/December 2025.
This study uses a systematic review to evaluate the total cost of ownership (TCO) as a tool for assessing electric vehicle (EV) feasibility compared to internal combustion engine vehicles. Findings highlight that while EVs have higher upfront costs, supportive policies and lower operating expenses can enhance their competitiveness.
Pedro Antonio de Albuquerque Felizola Romeral   +1 more
wiley   +1 more source

Mean‐Square Ulam–Hyers–Rassias Stability of Riemann–Liouville Fractional Stochastic Differential Equations

open access: yesAbstract and Applied Analysis, Volume 2025, Issue 1, 2025.
Fractional stochastic differential equations with memory effects are fundamental in modeling phenomena across physics, biology, and finance, where long‐range dependencies and random fluctuations coexist, yet their stability analysis under non‐Lipschitz conditions remains a significant challenge, particularly for systems involving Riemann–Liouville ...
Mohsen Alhassoun   +2 more
wiley   +1 more source

Optimization Design Scheme for Aerodynamic Noise Reduction in Pantograph Area of High-speed Railway EMU

open access: yesChengshi guidao jiaotong yanjiu
[Objective] With the increase of train operating speed, noise levels have gradually become a critical factor restricting the development of high-speed railways.
YU Yongge   +5 more
doaj   +1 more source

Existence of solutions for hybrid fractional pantograph equations

open access: yesApplicable Analysis and Discrete Mathematics, 2015
In this paper, we study the existence of the hybrid fractional pantograph equation {D?0+[x(t)/f(t,x(t),x(?t))= g(t,x(t), x(?t)), 0 < t < 1, x(0) = 0, where ?,?,? ?((0,1) and D?0+ denotes the Riemann-Liouville fractional derivative. The results are obtained using the technique of measures of noncompactness in the Banach algebras and a ...
Darwish, Mohamed Abdalla   +1 more
openaire   +3 more sources

RESEARCH ON VIBRATION CONTROL METHOD OF TRAIN PANTOGRAPH

open access: yesJixie qiangdu, 2019
In this paper, the vibration control method of train pantograph is studied. A dynamic equation based on Newton’s second law is established for the two element pantograph model.
GUO YanHong
doaj  

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