title: A finite element study on the effects of disorder in cellular structures.
abstract: The susceptibility to deformation localization of simple cubic arrangements of struts, which are a simple approximation of the micro-architecture in cancellous bone, is analyzed. The coherence between structural disorder and the tendency towards deformation localization is investigated and its relevance from a biological point of view is discussed. A systematic study on the spatial deformation distribution of regular and disordered open cell structures is carried out. To this end, finite element models are employed which account for elastic-plastic bulk material and large strain theory, and a methodology for the estimation of the degree of deformation localization is introduced.
authors.affiliation: Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Vienna, Austria; Luxner Engineering ZT, Imst, Austria. m.luxner@luxner-zt.com
authors.forename: Mathias H
authors.initials: MH
authors.lastname: Luxner
authors.forename: Alexander
authors.initials: A
authors.lastname: Woesz
authors.forename: Juergen
authors.initials: J
authors.lastname: Stampfl
authors.forename: Peter
authors.initials: P
authors.lastname: Fratzl
authors.forename: Heinz E
authors.initials: HE
authors.lastname: Pettermann