Abstract
Multiphase lattice blocks with periodic structure are analyzed by a continuum-based micromechanical approach. As a result, effective stiffness tensors, global initial yield surfaces, global damage thresholds, effective inelastic stress-strain responses and critical yielding temperatures of lattice blocks are established. Applications are given for various types of elastic and inelastic lattice blocks made of an aluminum alloy. Furthermore, a lattice block with negative effective Poisson's ratios is considered, and two types of two-phase lattice blocks that are capable to produce negative effective coefficients of thermal expansion are presented.
| Original language | English |
|---|---|
| Pages (from-to) | 4372-4392 |
| Number of pages | 21 |
| Journal | International Journal of Solids and Structures |
| Volume | 42 |
| Issue number | 15 |
| DOIs | |
| State | Published - Jul 2005 |
| Externally published | Yes |
Keywords
- High fidelity generalized method of cells (HFGMC).
- Homogenization
- Micromechanics
- Negative Poisson's ratio
- Re-entrant configuration
- Yield surface
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