Recursos de colección

ORBi Open Repository and Bibliography (324.361 recursos)

In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Engineering, computing & technology => Mechanical engineering

Mostrando recursos 1 - 20 de 140

  1. Nonlinear System Identification of an F-16 Aircraft Using the Acceleration Surface Method

    Dossogne, Tilàn; Noël, Jean-Philippe; Kerschen, Gaëtan
    In most mechanical engineering applications, the purpose of nonlinear system identification is to upgrade and update a linear finite element (FE) model. Nonlinear elements, whose parameters are found during the identification procedure, are locally added to this linear model to better reproduce the experimental results. The following nonlinear system identification method takes place in this framework, where a linear FE model of the structure is assumed to be available. A nonlinearity characterization step is first performed using qualitative nonlinear stiffness curves computed with the Acceleration Surface Method (ASM). This step enables to determine the location and the mathematical form of the nonlinear...

  2. Experimental Identification of an Aircraft Piccolo Tube Exhibiting Nonsmooth Nonlinearities

    Dossogne, Tilàn; Schoukens, Maarten; Bernay, Bruno; Noël, Jean-Philippe; Kerschen, Gaëtan
    Piccolo tubes are parts of aircraft wings anti-icing system and consist of titanium pipes inserted into the internal structure of the slat. Due to thermal expansion, clearances between the tube and its support are unavoidable, and cause the overall system to exhibit highly nonlinear behaviour, resulting from impacts and friction. This paper aims the complete nonlinear vibration analysis of an aircraft Piccolo tube, from measurements and identification to a thorough understanding of the dynamics and improvements of the design.

  3. Elements of stochastic processes 2017-2018: course material

    Arnst, Maarten

  4. A micro-mechanics-based inverse study for stochastic order reduction of elastic UD-fiber reinforced composites analyzes

    Wu, Ling; Adam, Laurent; Noels, Ludovic
    Peer reviewed

  5. Flexible models of a three degree of freedom serial elastic robot

    Lismonde, Arthur; Gattringer, Hubert; Bruls, Olivier

  6. Feedforward control of vibrations in flexible and lightweight robots

    Lismonde, Arthur; Sonneville, Valentin; Bruls, Olivier

  7. Parametric uncertainty quantification in the presence of modeling errors: Bayesian approach and application to metal

    Arnst, Maarten; Abello Álvarez, Belén; Boman, Romain; Ponthot, Jean-Philippe

  8. UQ Benchmark Problems for Multiphysics Modeling

    Arnst, Maarten

  9. Guiding model improvement in dynamic substructuring: sensitivity analysis and nonparametric probabilistic modeling approach

    Arnst, Maarten

  10. Flexible multibody dynamics: From finite element formulations to control and optimization

    Bruls, Olivier
    Today, state-of-the-art simulation packages in flexible multibody dynamics allow the high-fidelity analysis of industrial mechanisms and machines with many application fields including robotics, automotive systems, aeronautics, deployable structures or wind turbines. However, some classes of problems still remain difficult to solve, such as control and optimization problems or problems with unilateral contact conditions. These problems motivate the development of innovative finite element (FE) formulations which are under study in our research group. This talk will present an overview of these activities. I will introduce a local frame FE formulation for flexible multibody systems, which is based on the theory of...

  11. Presentation of the Robotix Academy

    Bruls, Olivier

  12. Generalized-alpha scheme for nonsmooth contact dynamics in flexible multibody systems

    Bruls, Olivier; Acary, Vincent; Cardona, Alberto

  13. Nonsmooth modelling and simulation of flexible multibody systems with unilateral constraints

    Bruls, Olivier
    This talk addresses the simulation of mechanical systems including rigid and flexible bodies, kinematic joints and frictionless contact conditions. The condition of impenetrability of the bodies in contact is expressed as a unilateral constraint, with the consequence that impacts and/or instantaneous changes in the velocities may arise in the dynamic response. Also, the flexibility of the structural components may lead to vibrations phenomena which should also be captured by the simulation algorithm. As an example, the dynamic response of wind turbines is characterized by a coupling between smooth motions and vibrations of large structural components, such as the blades and...

  14. Flexible multibody dynamics: From innovative formulations to applications in engineering

    Bruls, Olivier
    Today, state-of-the-art simulation packages in flexible multibody dynamics allow the high-fidelity analysis of industrial mechanisms and machines in many application fields including robotics, automotive systems, aeronautics, deployable structures or wind turbines. However, some classes of problems still remain difficult to solve in flexible multibody dynamics, such as problems with unilateral contact conditions as well as control and optimization problems. These problems motivate the development of innovative finite element (FE) formulations which are under study in our research group. This talk will present an overview of these activities and will be composed of two parts. In the first part, we will introduce...

  15. Presentation of the Robotix Academy

    Bruls, Olivier

  16. Modelling structural flexibility in industrial robots and production machines

    Bruls, Olivier
    Peer reviewed

  17. The local frame formulation of geometrically nonlinear slender structures

    Bruls, Olivier; Sonneville, Valentin
    Peer reviewed

  18. Trajectory linearization for control design in flexible multibody dynamics

    Bruls, Olivier; Lismonde, Arthur; Sonneville, Valentin
    Peer reviewed

  19. Improved splitting methods for 3D frictional contact problems

    Bruls, Olivier; Galvez Buezo, Javier; Cavalieri, Federico J.; Cardona, Alberto
    Peer reviewed

  20. Un algoritmo de contacto con fricción para la simulación dinámica no suave de sistemas muti-cuerpos ha sido

    Cavalieri, Federico J.; Galvez Buezo, Javier; Bruls, Olivier; Cardona, Alberto
    Peer reviewed

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