Fig. 1. BCC unit and overall model modeled by UG

Fig. 2. NiTi powder and printed lattice structure. (a) Particle size distribution of NiTi powder; (b) microscopic image of NiTi powder; (c) NiTi BCC lattice structure printed by selective laser melting (SLM)

Fig. 3. Finite element analysis settings. (a) Finite element model meshing; (b) boundary condition determination

Fig. 4. Dynamic performance test. (a) Top view of vibration test device with a lattice structure, including two single-axis control accelerometer on the adapter board and two triaxial acceleration sensors in the X and Z directions of the lattice structure; (b) half-power bandwidth method

Fig. 5. Modal simulation results.(a) The first six modes of NiTi alloy BCC lattice structure; (b) relationship between rod diameter and first-order intrinsic frequency

Fig. 6. Amplitude-frequency characteristic curve of sine sweep frequency for lattice structure with different rod diameters. (a) 0.6 mm rod diameter; (b) 0.8 mm rod diameter; (c) 1.0 mm rod diameter; (d) 1.2 mm rod diameter

Fig. 7. Summary of sine sweep frequency experimental data. (a) First-order intrinsic frequency versus rod diameter；(b) structural damping ratio versus rod diameter

Fig. 8. DSC curves of samples with different rod diameters. (a) 0.6 mm rod diameter; (b) 0.8 mm rod diameter；(c) 1.0 mm rod diameter; (d) 1.2 mm rod diameter

Fig. 9. Micro-CT porosity analysis and statistical results of BCC cells with different rod diameters. (a) 0.6 mm rod diameter；(b) 0.8 mm rod diameter; (c) 1.0 mm rod diameter; (d) 1.2 mm rod BCC cells with diameter