A beam to 3D model switch in transient dynamic analysis

Mikhael Tannous (1) , Patrice Cartraud (1) , David Dureisseix (2) , Mohamed Torkhani (3)

1 GeM - Institut de Recherche en Génie Civil et Mécanique
2 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
3 LAMSID - UMR 8193 - Laboratoire de Mécanique des Structures Industrielles Durables

Transient structural dynamic analyses often exhibit different phases, which enable one to use an adaptive modeling. Thus, a 3D model is required for a better understanding of local or non-linear effects, whereas a simplified beam model is sufficient for simulating the linear phenomena occurring for a long period of time. This paper proposes a method which enables one to switch from a beam to a 3D model during a transient dynamic analysis, and thus, allows one to reduce the computational cost while preserving a good accuracy. The method is validated through comparisons with a 3D reference solutioncomputed during all the simulation.

Mots clés: Transient dynamics

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

Mikhael Tannous, Patrice Cartraud, David Dureisseix, Mohamed Torkhani. A beam to 3D model switch in transient dynamic analysis. Finite Elements in Analysis and Design, 2014, 91, pp.95-107. ⟨10.1016/j.finel.2014.07.003⟩. ⟨hal-01065975⟩