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 language | British English |
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Pages (from-to) | 47-55 |
Number of pages | 9 |
Journal | International Journal of Mechanical Sciences |
Volume | 68 |
DOIs | |
State | Published - Mar 2013 |
Keywords
- FEM
- Mechanical properties
- Micro-lattice
- Plastic collapse