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• Visual Analysis and Geometric Modeling of Metal Foams

  89-92

  Tamás Antal Varga

  Tamás Mankovits

  Views:

  86

  The development of an efficient procedure for 3D modelling and finite element simulation of metal foams
  is one of the greatest challenges to engineer researchers nowadays. Creating 3D CAD model is alone a demanding
  engineering task due to its extremely complex geometry, and the proper finite element analysis process is still in the
  center of the research. The aim of this project is to analyze the related literature and to adapt the results may be
  considered.

• Pin on Disc Tests of Closed Cell Aluminium Foams

  353-357

  András Gábora

  Gábor Kalácska

  Róbert Keresztes

  Sándor Beke

  Zoltán Gergő Géresi

  Views:

  185

  Metal foams have a lightweight cellular structure with excellent mechanical and physical properties and are at the forefront of materials development for the automotive and other industries. Although metal foams are popular, they are still not sufficiently characterized thanks to their extremely complex structure. The aim of the research is the tribological investigation of closed cell metal foams with different production technologies and different cell sizes. The paper introduces the closed cell aluminium foams produced by direct foaming and gas injection and those raw materials. The Pin on Disc instrument and the most important parameters of the experiments are also presented.

• Construction Solutions for Reducing the Effect of the Rear-end Collision

  József Kertész

  Tünde Kovács

  Views:

  115

  Analysing the accident statistics, we can detact that, the improvement of the transport safety is one of the most important engineering task. The number of the vehicles in the trasport gets significantly higher from year-to year, and the infrastructure of the cities frequently can not coordinate already it. Therefore the increasing of the vehicles’s number naturally involves the upgrowth of the accidents occasions too. The aim of the improvement of the vehicle-construction to reduce the personal injured and death resulted accidents number in contrast with the increasing traffic performance. This study analyses the construction options for reducing the effect of the rear-end collision whiches are concentrated for the passive vehicles and its passengers firtsly.  Among the actual car manufacturers applied solutions, foward-looking possibilities and suggestions are described in this publication. The development can not be concentrated for only the safety improvement, the mass-optimalization must be completed simultenously. These apparent contrary requirements can be completed with application of new materials. Therefore the study addresses the more optimal utilization of the meatl foam in the vehicles crushbox. In addition, an optimized break-assist solution is described based on the Mercedes developed Pre Safe Plus^® system to increas the abrorbtion of the impact energy.

• Fémhabstruktúrák elemzése és geometriai modellezése

  145-152

  Tamás Antal Varga

  Tamás Mankovits

  Views:

  110

  The development of an efficient procedure for 3D modelling and finite element simulation of metal foams is one of the greatest challenges to engineer researchers nowadays. Creating 3D CAD model is alone a demanding engineering task due to its extremely complex geometry, and the proper finite element analysis process is still in the center of the research. The aim of this project is to analyze the related literature and to adapt the results may be considered