Entity

Time filter

Source Type


Alcala E.,University Institute of Automobile Research of the Madrid Community | Badea F.,University Institute of Automobile Research of the Madrid Community | Martin A.,University Institute of Automobile Research of the Madrid Community | Aparicio F.,University Institute of Automobile Research of the Madrid Community
International Journal of Automotive Technology | Year: 2013

The analysis of structures with finite elements methods (FEM) represents a widely spread technique. For large tubular structures similar to the buses and coaches upper structures, beam type elements are utilized due to the fact that these elements provide satisfactory results at relatively reduced computational performances. However the beam type elements have a main disadvantage determined by the fact that the modeled joints have an infinite rigid behavior. This shortcoming determines a stiffer behavior of the modeled structures which translates into an error source for the structural simulations (up to 45%). To overcome this problem, a simple methodology was conceived and an alternative optimized equivalent beam model obtained. The methodology studies the behavioral characteristics of beam modeled T-junctions determining their limitations and comparing them to equivalent T-junctions modeled with shell and volume elements. This way an improved Tjunction has been obtained, in which the behavioral error was reduced to less than 5%. Furthermore the FEM obtained results were validated with real T-junctions. © 2013 The Korean Society of Automotive Engineers and Springer-Verlag Berlin Heidelberg. Source

Discover hidden collaborations