Investigation of Damage Behaviour and Response Surface Optimisation of Auxetic Structures for Application in Fan- and Compressor Casings and Containment Layers

Auxetic structures are characterised by a negative Poissons ratio. This leads to increased intrusion resistance, increased fracture strength and increased energy absorption. These attributes make them a promising material for containment or housing structures in gas turbines and aero engines. For this application the contraction behaviour of auxetic structures is investigated with intended use in housing or containment layers. At first the basics of auxetic failure behaviour are considered. Then an auxetic structure is generated via a Response-Surface-Optimisation, that contracts very strongly under local force application. Finally, construction guidelines for auxetic structures in housings and containment layers are derived.     «

Auxetic structures are characterised by a negative Poissons ratio. This leads to increased intrusion resistance, increased fracture strength and increased energy absorption. These attributes make them a promising material for containment or housing structures in gas turbines and aero engines. For this application the contraction behaviour of auxetic structures is investigated with intended use in housing or containment layers. At first the basics of auxetic failure behaviour are considered. Then...     »