Int.J.Num.Meth.Engng. 37, 2609-2629, 1994


COMBINED MICRO- AND MACROMECHANICAL
CONSIDERATIONS OF LAYERED COMPOSITE SHELLS

F.G. Rammerstorfer¹, A. Starlinger² and K. Dorninger³

¹Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria
²AIREX AG, Sins, Switzerland
³Saturn Corp., Troy, MI, USA


Abstract - This contribution deals with a computational treatment of the non-linear behanviour of composite sandwich shells with extremely thin face layers and a relatively thick orthotropic core, and multi-layered fiber reinforced polymer or metal matrix composite shells. Special emphasis is laid on algorithms which allow the consideration of local effects, like face layer wrinkling in sandwich shells and progressive damage or microplasticity in fibre composites, by semi-analytical approaches implemented into a finite elment formulation. This leads to the advantage that the shell structure must be discretized only up to an elemnt mesh density which is sufficient for describing the global deformation and stability behaviour.


(hjb,960628)