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• Using Mathematical Models in Secondary Grammar Schools

  76-83

  Csaba Kézi

  Views:

  44

  On February 11, 2021, I gave a motivational lecture at the Tamás Esze High School in Mátészalka, and I completed a series of test tasks with the students. In this article, I looked for an answer to how students who are about to graduate approach to solving math problems. The main objective was to investigate whether they prefer to solve purely mathematical or application-oriented tasks, and in which one they achieve better results. In this paper, I analyze the results obtained.

• Micromechanical Model of Dry Friction Hybrid Polymer Composite Clutch Facings

  335-340

  Roland Biczó

  Gábor Kalácska

  Views:

  88

  Modelling the complex coupled thermomechanical and tribological contact of a dry friction clutch system between cast iron flywheel and scatter-wound hybrid composite clutch facing requires a thought through investigation of the friction material properties and behaviour. Challenges of the creation of a mechanical stiffness matrix for such a complex material are described in this paper along with simplification ideas and solutions.

• Development of Analysis of Loss Sources of Vehicles

  733-737

  Sándor Pálinkás

  György Juhász

  Ferenc Szodrai

  Views:

  161

  Vehicle fuel consumption can be significantly influenced by various types of losses such as loss from bearing, aerodynamic drag and rolling drag. It is important to highlight that fuel consumption reduction can be only achieved when those losses are reduced that are induced during the operation.

  The aim of our work group is to define the calculation method and the magnitude of the losses of the vehicles. These parameters are intended to be serve as input parameters for future energetic modelling of vehicles.