Modern electrical traction uses asynchronous motors for driving railway vehicles because these have a lot of advantages in comparison with the classical, direct current motors. Reducing active and reactive energy consumption is concern case motors, meaning decrease exploitation costs. The research carried out shows, by results simulations, effects geometry optimization stator rotor lamination e...

We consider the following obstacle problem for Monge-Ampere equation detDu = fχ{u>0} and discuss the regularity of the free boundary ∂{u = 0}. We prove that ∂{u = 0} is C if f is bounded away from 0 and ∞, and it is C if f ≡ 1.

a CNRS, LAAS, 7 Avenue du Colonel Roche, F-31400 Toulouse, France b Univ de Toulouse, UPS, LAAS, F-31400 Toulouse, France c Université de Lyon, CNRS, Laboratoire AMPERE, UMR 5005, INSA de Lyon, F-69621 Villeurbanne, France d Institut de Microelectrónica de Barcelona-Centre Nacional de Microelectrónica (IMB-CNM), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Autònoma de Bar...

Johan Gyselinck1, Patrick Dular2, Laurent Krähenbühl3, Ruth V. Sabariego4 1 BEAMS Department, Université Libre de Bruxelles (ULB), Belgium, [email protected] 2ACE, Dept. of Electrical Engineering and Computer Science, University of Lie‘ge (ULg), Belgium, [email protected] 3Université de Lyon, Ampere (CNRS UMR5005, Ecole Centrale de Lyon, INSA-Lyon, UCBL), France 4Dept. Electrical ...

The aim of the present work was to study the effect of various process parameters i.e. current, voltage, travel speed, electrode diameter, flux composition, pre heating of workpiece, electrode stick-out and edge including angle on changes in tensile strength and toughness of the weld bead geometry of HSLA Steel and to optimize the process so that minimal changes occur in the material properties...

The basic properties of the near-Earth current sheet from 8 RE to 12 RE were determined based on Time History of Events and Macroscale Interactions during Substorms (THEMIS) observations from 2007 to 2013. Ampere's law was used to estimate the current density when the locations of two spacecraft were suitable for the calculation. A total of 3838 current density observations were obtained to stu...