Căutare după Autor "Crețu, Spiridon"

Afișează articolele 1-4 of 4

    • A Numerical Solver for the Wheel-Rail Contact Subjected to Combined Loads 

      Crețu, Spiridon; Bărbînță, Constantin-Ioan (Universitatea ”Dunărea de Jos” din Galați, 2009)
      A working algorithm, able to be incorporated into a computer code, has been developed to solve the stress state in the general case of non-Hertzian contacts. Brent’s method has been involved to find the contact point for ...

    • On the Effect of Spectral Characteristics of Roughness on Contact Pressure Distribution 

      Crețu, Spiridon; Bălan, Mihaela Rodica; Urzică, Ana (Universitatea ”Dunărea de Jos” din Galați, 2009)
      In the first part of the paper, the matrix containing the roughness heights is obtained by a linear transformation of the Gaussian input matrix, the coefficients of the transformation matrix being found as solutions of a ...

    • Residual Stresses Effect on Fatigue Life of Rolling Contacts 

      Crețu, Spiridon; Benchea, Marcelin (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The fatigue life tests carried out on two groups of ball bearings point out the positive influence of the compressive residual stresses induced by a previous loading in the elastic-plastic domain. The values of residual ...

    • A Three-Dimensional Elastic-Plastic Analysis of Rolling Contacts 

      Benchea, Marcelin; Crețu, Spiridon (UDJG, 2010)
      An analysis model has been developed to model the nonlinear strain rate dependent deformation of rolling bearing steel stressed in the elastic-plastic domain. The model is designed in the frame of the incremental theory ...