Comput.Mech. 37, 470-478, 2006
F.G. Rammerstorfer¹, D.H. Pahr¹, T. Daxner¹ and W.K. Vonach²
¹Institute of Lightweight Design and Structural
TU Wien, Vienna, Austria
²CAE Simulation and Solutions, Vienna, Austria
Modern materials and material compounds for application in lightweight
structures exhibit, in addition to the use of constituents of high specific
stiffness and strength, very special micro- and meso-structures.
Typical representatives of such material compounds are sandwiches with thin
homogeneous or composite face layers and structured core materials (for
instance honeycombs and closed or open cell foams). The load carrying capacity
of lightweight structures made of such materials and material compounds,
respectively, is limited by a considerable number of rather different but
interconnected instability modes occurring at length scales which are several
orders of magnitude smaller than the size of the structural part.
These non-global instabilities are the subject of the presented key-note