Fig 1.
CAD diagram of four groups of scaffolds.
Fig 2.
Finite element analysis model of porous scaffold.
Table 1.
Properties of Ti6Al4V materials in finite element analysis.
Fig 3.
Four groups of Ti6Al4V samples manufactured by SLM.
Fig 4.
Mechanical compression test: (a) test operation diagram; (b) schematic diagram of test.
Fig 5.
Boundary conditions of CFD analysis.
Fig 6.
SEM morphology of SAP scaffolds: (a) and (b) side view of pores at different locations, (c) view of top surface, (d) micro-morphology of trabeculae, (e) single pore view, (f) view of the pore wall under a high-power microscope.
Table 2.
Measurement of elliptical pore size.
Fig 7.
Finite element analysis cloud map: a) equivalent stress cloud map, b) displacement cloud map.
Fig 8.
Stress-strain curve of scaffolds: a) Stress-strain curve by finite element simulation; b) Stress-strain curve obtained by compression test.
Table 3.
Static characteristics of four groups of scaffolds (FE = finite element).
Fig 9.
Four groups of scaffolds pressure drop cloud: (a) SU pressure drop cloud, (b) SA pressure drop cloud, (c) SP pressure drop cloud of direction +Z, (d) SP pressure drop cloud of direction -Z, (e) SAP pressure drop cloud of direction +Z, (f) SAP pressure drop cloud of direction–Z.
Fig 10.
Four groups of scaffolds velocity cloud: (a) SU velocity cloud map, (b) SA velocity cloud map, (c) SP velocity cloud map of direction +Z, (d) SP velocity cloud map of direction -Z, (e) SAP velocity cloud map of direction +Z, (f) SAP velocity cloud map of direction–Z.
Fig 11.
Pressure drop and permeability of four groups of scaffolds.