Catégorie

Ingénierie ferroviaire

vignette|Croisement de rails,infrastructure requérant de l’ingénierie ferroviaire L'ingénierie ferroviaire est une ingénierie des transports à multiples facettes traitant de la conception, de la construction et de l'exploitation de tous les types de systèmes de transport ferroviaire. Elle englobe un large éventail de disciplines d'ingénierie, y compris l'ingénierie civile, l'ingénierie des transports, l'ingénierie informatique, l'ingénierie électrique, l'ingénierie mécanique, l'ingénierie industrielle et le génie de production. De nombreuses autres sous-disciplines d'ingénierie sont également sollicitées. Elle nécessite une ingénierie dont les rôles principaux sont celui du concepteur chargé des études de conception au cours des différents stades, du maître d'œuvre de suivi de réalisation, de pilotage des opérations d’essais et mises en service et d'homologation. Tout ou partie de cette ingénierie peut être délégué par le maître d'ouvrage à des consultants extérieurs.

Ontologie

Source officielle

Graph Chat

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Exercices associés (5)

Oscillateur couplé

Two material points, with identical mass m, are frictionlessly moving in a straight line, on a horizontal track (see diagram). They are attached together by a spring with constant K. Each material point is attached to a fixed point on the track by another spring, with constant k. The three springs have rest length l₀, and the fixed points are separated by a distance 3l₀.

Write each material point’s equations of motion.
Deduce the equations of motion of the center of mass and that system’s rela

Forces de frottement

A sports car is driving around a circular track of radius R with a horizontal velocity of constant norm v. The track is on an incline with angle α from the the horizontal, such that the car is tilted inwards. The static friction coefficient between the tires and the track is μ.

Draw a diagram, considering the vertical plane perpendicular to the car’s velocity and represent all forces acting on the car.
What’s the condition on v for the car not to drift outwards ?

Numerical application: $g=10\

Wagon en roue libre

A wagon of mass M moves downwards without friction along a linear rail track on a plane inclined by an angle α. A mathematical pendulum of length L and of mass m, where mu2004≪u2004M, is attached to the ceiling of the wagon at point A. We neglect the inertia of the wheels and the friction. We consider the mass m of the pendulum as a material point P.

Neglecting the mass m of the pendulum, establish first the equations of motion of the wagon with respect to the absolute frame of reference of the

Boucler la boucle

A stuntwoman attempts to drive her car weighing mg around a vertical looping track of radius R. She enters the track at point P with velocity V⃗_(P) and we assume that she then free-wheels around the track without either braking or accelerating. There is no friction.

Write the car’s equations of motion for the entire loop.
Express the car’s mechanical energy at all points of the loop, and show that the mechanical energy is a simple integral of the motion.
Compute the reaction force from t

Bar sur rails chargés

A rod of mass m, of length l and of resistance R slips without friction on two parallel rails. A battery imposes a potential difference ℰ between the rails, and a uniform and constant magnetic field B is perpendicularly applied on the plane defined by the rails (Fig. 1). We will neglect the self-inductance of the circuit. Initially, the rod is at rest. Show that at istant t, the velocity is:

v=\frac{\varepsilon}{Bl}(1-e^{-B^{2}l^{2}t/mR})~.

The rod accelerates towards the left under the action of the L

Notebooks associés (3)

Illustrating Band Structures in Solids: Free Electrons and Atomic Orbitals

In [1]: import numpy as np from numpy import linalg as LA import matplotlib.pyplot as plt

from future import print_function

from ipywidgets import interact, interactive, fixed, interact_manual import ipywidgets as widgets %matplotlib widget The emergence of band structures[1]¶ If you have questions about this notebook, e-mail Oleg Malanyuk (oleg.malanyuk@epfl.ch) This jupyter notebook is intended to provide a illustration of the band structures in solides, starting from the points of v

Voice Transformation Techniques Using Digital Signal Processing

A Gallery of Voice Transformers[1]¶

                                      [2]Paolo Prandoni, [3]LCAV, EPFL

In this notebook we will explore various ways to implement a system that changes the voice of a speaker. Typical applications for these techniques, strictly sorted by plausibility, include international spy missions and prank telephone calls, and devices such as the one displayed here can be easily bought on the web... or in a novelty shop. No description has been provided for t

Numerical Precision in DFT Computation

Numerical Precision in DFT Computation[1]¶

                                      [2]Paolo Prandoni, [3]LCAV, EPFL

In [1]:

first our usual bookkeeping

%matplotlib inline import matplotlib import matplotlib.pyplot as plt import numpy as np In this notebook we will look at some numerical issues associated to the DFT; in particular we we will look at the differences in precision between the "naive" way of computing the DFT and the FFT algorithm. As a quick reminder, the definitions of t

Exercices associés (5)

Oscillateur couplé

Write each material point’s equations of motion.
Deduce the equations of motion of the center of mass and that system’s rela

Forces de frottement

Draw a diagram, considering the vertical plane perpendicular to the car’s velocity and represent all forces acting on the car.
What’s the condition on v for the car not to drift outwards ?

Numerical application: $g=10\

Wagon en roue libre

Neglecting the mass m of the pendulum, establish first the equations of motion of the wagon with respect to the absolute frame of reference of the

Boucler la boucle

Write the car’s equations of motion for the entire loop.
Express the car’s mechanical energy at all points of the loop, and show that the mechanical energy is a simple integral of the motion.
Compute the reaction force from t

Bar sur rails chargés

v=\frac{\varepsilon}{Bl}(1-e^{-B^{2}l^{2}t/mR})~.

The rod accelerates towards the left under the action of the L

Ingénierie ferroviaire

Chattez avec Graph Search

from future import print_function

first our usual bookkeeping

from future import print_function

first our usual bookkeeping

Concepts and structural behavior of ballastless railway track systems made of UHPFRC

Scanning probe microscope

Automatic Layout of Railroad Diagrams