Driving forces in moving-contact problems of dynamic elasticity: Indentation, wedging and free sliding (Articolo in rivista)

Type
Label
  • Driving forces in moving-contact problems of dynamic elasticity: Indentation, wedging and free sliding (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jmps.2012.06.011 (literal)
Alternative label
  • Slepyan, Leonid I.; Brun, Michele (2012)
    Driving forces in moving-contact problems of dynamic elasticity: Indentation, wedging and free sliding
    in Journal of the Mechanics and Physics of Solids
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Slepyan, Leonid I.; Brun, Michele (literal)
Pagina inizio
  • 1883 (literal)
Pagina fine
  • 1906 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 60 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 24 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Tel Aviv University; University of Cagliari; Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • Driving forces in moving-contact problems of dynamic elasticity: Indentation, wedging and free sliding (literal)
Abstract
  • The steady-state solution for an elastic half-plane under a moving frictionless smooth indenter of arbitrary shape is derived based on the corresponding transient problem and on a condition concerning energy fluxes. Resulting stresses and displacements are found explicitly starting from their expressions in terms of a single analytical function. This solution incorporates all speed ranges, including the super-Rayleigh subsonic and intersonic speed regimes, which received no final description to date. Next, under a similar formulation the wedging of an elastic plane is considered for a finite wedge moving at a distance from the crack tip. Finally, we solve the problem for such a wedge moving along the interface of two elastic half-planes compressed together. Considering these problems we determine the driving forces caused by the main underlying factors: the stress field singular points on the contact area (super-Rayleigh subsonic speed regime), the wave radiation (intersonic and supersonic regimes) and the fracture resistance (wedging problem). In addition to the sub-Rayleigh speed regime, where the sliding contact itself gives no contribution to the driving forces, there exists a sharp decrease in the resistance in the vicinity of the longitudinal wave speed with zero limit at this speed. (C) 2012 Elsevier Ltd. All rights reserved. (literal)
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