Investigation of functionally graded TPMS structures fabricated by additive manufacturing
By Shixiang Yu, Jinxing Sun, Jiaming Bai. Materials & Design (1980-2015), 2019
361 citations recorded by the source corpus.
Abstract Triply periodic minimal surfaces (TPMS), which have zero mean curvature and large surface areas, are discussed in this paper. Two TPMS structures, the Schwarz Primitive (P) and Gyroid, were designed with both uniform and graded density and fabricated using additive manufacturing (Stereolithography). The mechanical properties and energy absorption abilities of the printed TPMS samples were studied. The Schwarz P structure cracked layer by layer and exhibited obvious peak-valley stress feature during the compression test. The total absorbed energy to the densification point was 1.64 MJ/m3 and 2.47 MJ/m3 for the uniform and graded Schwarz P structures, respectively. There was little difference between the uniform and graded Gyroid samples, and only one structural crack appeared during the compression test. The total absorbed energy for the uniform and graded Gyroid structures was approximately 2.49 MJ/m3 and 2.51 MJ/m3, respectively. The results showed that the graded Schwarz P structure absorbed more energy during the compression tests, while energy absorbed in the graded Gyroid structure was close to the uniform Gyroid structure. Furthermore, the relationship between energy absorption and compressive stress was determined and the abnormal characteristics in Gyroid structures were deeply discussed.
Subfields: Mechanical Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/9f1ba0b5121acc1effdd7e5f80a784df3bf3a36f
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Mechanical Engineering
In Mechanics of Materials
Citations in the corpus
- Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications (2022, methodology): “In addition, the graded P structures can absorb more energy than the uniform P structures [107].”
- Acoustic absorptions of multifunctional polymeric cellular structures based on triply periodic minimal surfaces fabricated by stereolithography (2020, methodology): “…unit cell sizes of the structures fabricated by SLM, SLS and FDM range from 7 to 20 mm, while stereolithography (SLA) technique can fabricate structures in smaller sizes (less than 5 mm in unit size) with high dimension accuracy and good surface finish(Melchels et al. 2010; Yu, Sun, and Bai 2019).”