Sökning: "train"

Visar resultat 21 - 25 av 526 avhandlingar innehållade ordet train.

  1. 21. Modelling and Simulation of Train-Track Interaction including Wear Prediction

    Författare :Clas Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; full-scale measurements; rail corrugation; substructuring; wheel-rail contact; multibody dynamics; dynamic train-track interaction; three-dimensional motion;

    Sammanfattning : Many problems in railway traffic arise as a result of the dynamic interaction between rolling trains and tracks. The problems include both instantaneous effects due to induced vibrations of track and vehicle, and more long-term processes of a detrimental nature. LÄS MER

  3. 22. Train-Induced Ground Vibration and Its Prediction

    Författare :Mehdi Bahrekazemi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis based on a series of ground vibrationmeasurements at different sites presents two differentsemi-empirical models for prediction of ground-borne vibrationdue to train traffic. Ground-borne vibration due to train traffic may causeannoyance to people who live nearby the track or interfere withthe operation of sensitive equipment inside the buildings. LÄS MER

  4. 23. Difficulties to Read and Write Under Lateral Vibration Exposure : Contextual Studies Of Train Passengers Ride Comfort

    Författare :Jerker Sundström; Shafiquzzaman Khan; Neil J. Mansfield; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lateral vibrations; passenger activities; reading; writing; sitting posture; frequency weighting; rated difficulty; field study; laboratory study; transient vibrations; stationary vibrations.; Vehicle engineering; Farkostteknik;

    Sammanfattning : Many people use the train both as a daily means of transport as well as a working place to carry out activities such as reading or writing. There are, however, several important factors in this environment that will hamper good performance of such activities. LÄS MER

  5. 24. Numerical modeling of train-induced ground vibrations

    Författare :Jens Malmborg; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The population is growing, and an increasing proportion of the population live in urban areas. As a consequence, human exposure to noise and vibrations is increasing. Larger and denser cities lead to a higher amount of traffic close to where people work and live. LÄS MER

  7. 25. Design Optimization in Industrial Robotics : Methods and Algorithms for Drive Train Design

    Författare :Marcus Pettersson; Johan Ölvander (Andersson); Torgny Brogårdh; Jorge Angeles; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Robot manufacturers; industrial robot; robot design; Electrical engineering; Elektroteknik;

    Sammanfattning : Robot manufacturers, like many other manufacturers, are experiencing increasing competition in a global market where one way to confront the challenge is by making the development process more efficient. One way to speed up the time to market for new products is to take advantage of design optimization based on simulation models. LÄS MER