Fig. 1. Schematic unit model
Fig. 2. Separated models: (1) diagonal truss model, (2) hexagonal truss model (d: diameter, w: space of truss, l: width, length, or height is equal defined as a regular hexahedron.)
Fig. 3. Stress as a function of strain
Fig. 4. Stress distribution for each model at yielding point (top, d=10mm; middle, d=20mm; bottom, d=30mm)
Fig. 5. Relative elastic modulus as a function of relative density
Fig. 6. Relative compressive yield strength as a function of relative density
Table 1. Relative elastic modulus and relative compressive yield strength
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