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Discrete-element modelling of the grinding contact length combining the wheel-body structure and the surface-topography models

Article dans une revue avec comité de lecture
Auteur
OSA, Jean-Louis
SANCHEZ, José Antonio
239392 Universidad Miguel Hernández [Elche] [UMH]
ORTEGA, Naiara
CHARLES, Jean-Luc
ccIORDANOFF, Ivan

URI
http://hdl.handle.net/10985/17175
DOI
10.1016/j.ijmachtools.2016.07.004
Date
2016
Journal
International Journal of Machine Tools and Manufacture

Résumé

Phenomena governing the grinding process are largely related to the nature and evolution of contact between grinding wheel and ground component. The definition of the contact area plays an essential role in the simulation of grinding temperatures, forces or wear. This paper presents a numerical model that simulates the contact between grinding wheel and workpiece in surface grinding. The model reproduces the granular structure of the grinding wheel by means of the discrete element method. The surface topography is applied on the model surface taking into account the dressing mechanisms and movements of a single-point dresser. The individual contacts between abrasive grits and workpiece are studied regarding the uncut chip thickness, assuming viscoplastic material behaviour. Simulation results are evaluated with experimental measurements of the contact length. The results remark the importance of surface topography and dressing conditions on the contact area, as well as wheel deflection.

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I2M_IJMTM_2016_IORDANOFF.pdf
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  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)

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  • Multiscale Modeling of Complex Dynamic Problems: An Overview and Recent Developments 
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    Multiscale modeling aims to solve problems at the engineering (macro) scale while considering the complexity of the microstructure with minimum cost. Generally, two scales are considered in multiscale modeling: small scale, ...
  • 3D coupling approach between discrete and continuum models for dynamic simulations (DEM–CNEM) 
    Article dans une revue avec comité de lecture
    CHARLES, Jean-Luc; ILLOUL, Lounès; ccIORDANOFF, Ivan; ccDAU, Frédéric; ccJEBAHI, Mohamed (Elsevier, 2013)
    The coupling between two dissimilar numerical methods presents a major challenge, especially in case of discrete–continuum coupling. The Arlequin approach provides a flexible framework and presents several advantages in ...
  • Simulation of Vickers indentation of silica glass 
    Article dans une revue avec comité de lecture
    ccJEBAHI, Mohamed; ANDRE, Damien; ccDAU, Frédéric; CHARLES, Jean-Luc; ccIORDANOFF, Ivan (Elsevier, 2013)
    The indentation response of glasses can be classified under three headings: normal, anomalous and intermediate, depending on the deformation mechanism and the cracking response. Silica glass, as a typical anomalous glass, ...
  • Simulation du comportement de la silice sous indentation Vickers par la méthode des elements discrets: densification et mécanismes de fissuration 
    Communication avec acte
    ANDRE, Damien; CHARLES, Jean-Luc; ccIORDANOFF, Ivan; ccDAU, Frédéric; ccJEBAHI, Mohamed (2013)
    The indentation response of glasses can be classified into three classes : normal, anomalous and intermediate depending on the deformation mechanism and the cracking response. Silica glass, as a typical anomalous glass, ...
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    ANDRE, Damien; CHARLES, Jean-Luc; NEAUPORT, Jérôme; ccIORDANOFF, Ivan (ASME, 2012)
    This work is a continuation of a previous study that investigated sub-surface damage in silica glass due to surface polishing. In this previous study, discrete element models have shown qualitatively good agreement with ...

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