Runping Chen, Dongyun Zhang, Songtao Hu, Yangli Xu, Tingting Huang, Long Zhang, Zhiyuan Liu. Compressive Properties and Numerical Simulation of Porous Structure Fabricated by Laser Powder Bed Fusion[J]. Laser & Optoelectronics Progress, 2021, 58(17): 1714006
- Laser & Optoelectronics Progress
- Vol. 58, Issue 17, 1714006 (2021)
Fig. 1. Description of physical model and stress condition of human skeleton element
Fig. 2. Establishment of topology optimization model
Fig. 3. Topology optimization cells with different porosity. (a) Porosity 60%; (b) porosity 70%; (c) porosity 80%
Fig. 4. Cell models created by Solidworks. (a) Porosity 60%; (b) porosity 70%; (c) porosity 80%
Fig. 5. Unit porous structure with different porosity. (a) Porosity 60%; (b) porosity 70%; (c) porosity 80%
Fig. 6. Porous structure samples. (a) 6-60 sample; (b) 6-70 sample; (c) 6-80 sample
Fig. 7. Stress-strain curves of porous structure specimen
Fig. 8. Compression deformation process of porous structures with different porosity (ε is compression deformation)
Fig. 9. Stress distribution of porous structure with different porosity. (a) Porosity 60%; (b) porosity 70%;（c）porosity 80%
Fig. 10. Stress distribution in porous structure. (a) Porosity 60%; (b) porosity 70%; (c) porosity 80%
Fig. 11. Experimental and simulated compressive stress-strain curves of porous structure with different porosity. (a) Porosity 60%; (b) porosity 70%; (c) porosity 80%
Fig. 12. Compressive strength and compression modulus of porous structure
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Table 1. Comparison of chemical composition (mass fraction) of TC4 powder with ASTM F136-12 standard
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Table 2. Forming process parameters of TC4 porous structure
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