Mechanical Properties and Failure Investigation of Metallic Open Lattice Cellular Structures

  • George N. Labeas
  • Milan M. Sunaric
  • Vangelis P. Ptochos
Conference paper

Abstract

A generic open lattice cellular structure under compressive loading is investigated by means of numerical analysis. The cellular structure is produced of stainless steel sheets using the punching and folding technique. The Finite Element method is used to derive the most important structural core properties, i.e. elasticity modulus, plateau stress and compaction strain, as well as to study the non-linear response and complex failure processes that occur as the core collapses in compression. Two concurrent Finite Element models are developed, a simple beam element model and a more complicated shell element model. The results obtained from simulations of the structure under compressive loading using the two versions of the FE modeling are compared to results of quasi — static compression experimental tests. The influence of geometrical parameters and strut cross section parameters on the core structure mechanical properties is parametrically studied.

Keywords

Cellular structures Mechanical properties FE modelling Non-linear response Static compression 

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Copyright information

© Springer Science+Business Media B.V 2009

Authors and Affiliations

  • George N. Labeas
    • 1
  • Milan M. Sunaric
    • 1
  • Vangelis P. Ptochos
    • 1
  1. 1.Laboratory of Technology and Strength of MaterialsUniversity of Patras, PanepistimioupolisRionGreece

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