Prediction of the mechanical properties of micro-lattice structures subjected to multi-axial loading

K. Ushijima, W. J. Cantwell, D. H. Chen

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

The mechanical properties of micro-lattice structures subjected to a normal stress state are investigated using both a classical beam theory approach and the finite element technique. In particular, an approach for predicting the yield surface of lattice structures subjected to either a uniaxial or a biaxial stress state is proposed. In addition, the geometrical and material conditions for the occurrence of elastic buckling under a triaxial stress state are identified. The stiffness and plastic collapse strengths of the micro-lattice structures are compared with the corresponding properties of other lightweight structures. It is shown that micro-lattices offer significant potential for use in the design of lightweight cellular structures.

Original languageBritish English
Pages (from-to)47-55
Number of pages9
JournalInternational Journal of Mechanical Sciences
Volume68
DOIs
StatePublished - Mar 2013

Keywords

  • FEM
  • Mechanical properties
  • Micro-lattice
  • Plastic collapse

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