The heterogeneous and multi-phases modelization of composites for automotive lightweighting English Free Members only

  • Category Technical paper
  • Related event Journée d'étude : Optimisation des composites - 12 fevrier 2014
  • Edition SIA
  • Date 02/12/2014
  • Author J. Seyfarth, R. Assaker, T. Malo, S. Calmels - e-Xstream engineering
  • Language English
  • Type PDF file (920.06 Ko)
    (Downloadable immediately on receipt of online payment)
  • Number of pages 9
  • Code R-2014-01-05
  • Fee Free

Automotive design turns to composite materials especially because of their better ratio weight / mechanical strength. The use of these materials with various microstructural characteristics appears now on components submitted to severe mechanical loads for the respect of performances regarding to crash, endurance, and resistance to static load or vibro-acoustic requirements.
The simulation can be used to find the optimal design of these elements and then obtain why this composites are selected: lightweighting to reach objectives of worldwide regulations for CO2 emissions. The difficulty lies in the proper consideration of the influence of the manufacturing process on the geometry and on behaviour of the microstructure. For example, for the same choice of resin and fibers, an injection-molded reinforced plastic can have very different local behaviours depending on the injection parameters selected influencing local fiber orientations but also the characteristics of its constituents.
The presentation will show the importance of choosing a multi-phase material model to accurately simulate the nonlinear behavior of composites and their dependence on strain rate or temperature. Some application examples of this method on automotive industry cases will be presented to illustrate the concrete benefits that has already been obtained on the design of structural parts.

INGENIEURS DE L'AUTO SE DIGITALISE

 

 

La revue Ingénieurs de l’Auto est maintenant diffusée en print et on line. Une grande première pour la SIA avec ce numéro 865, disponible au format numérique.

Cette version digitale sera, à chaque numéro, réservée aux membres de la SIA abonnés.

Exceptionnellement pour ce premier numéro on line, et en lien avec la situation de confinement et de télétravail de beaucoup d’ingénieurs de notre industrie, la version digitale du numéro de Mai est accessible à tous.

 

DÉCOUVRIR LA REVUE