PSI - Issue 83

Wong Kam Chee et al. / Procedia Structural Integrity 83 (2026) 14–27

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Figure 4. Stress distribution of lattices under 1000N compression load (a) Gyroid; (b)Schwarz P; (c) Hybrid

Figure 5 shows six different points that were marked at the pore for Schwarz P and hybrid. Then the difference between the highest point stress with the lowest point stress, and the different between the point stress with average point stress were shown in Table 4 . The maximum stress difference for Schwarz P was 1.311715 x 10 2 MPa, which is 103.40% while the maximum stress difference for the hybrid is 9.404443 x 10 2 MPa, which is 194.43%. Schwarz P has a small difference with the average stress ranging 4.59% to 66.10% while hybrid has a big average stress difference ranging from 75.49% to 181.54%. This can be shown that the hybrid has a very uneven stress distribution pattern through the lattice pore. The distortion of the original circular shape of Schwarz P due to the hybridization with the Gyroid also causes the uneven stress distribution to the lattice, as shown in Errore. L'origine riferimento non è stata trovata. . While both Schwarz P and Gyroid display uniform stress responses due to their smooth and continuous TPMS geometries, hybridizing the two lattices distorts the lattice’s periodicity. The circular pore shape of Schwarz P distorts when fused with Gyroid, especially at the transition between the two TPMS, which interrupts the smooth load paths. The high curvature change areas are where the stress accumulates.

Figure 5. Pore shape difference and stress distribution (a) Hybrid lattice; (b) Schwarz P