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Compressive behaviour of Neovius Triply Periodic Minimal Surface cellular structure manufactured by fused deposition modelling
Virtual and Physical Prototyping ( IF 10.2 ) Pub Date : 2019-05-20 , DOI: 10.1080/17452759.2019.1615750
Sohaib Z. Khan 1, 2 , S. H. Masood 2 , Essam Ibrahim 1 , Zaini Ahmad 3
Affiliation  

Compressive behaviour of Triply Periodic Minimal Surface type Neovius structure is investigated. The structure was manufactured by Fused Deposition Modelling (FDM) Additive Manufacturing technology in ABS material. The Neovius cellular structures with four different unit cell sizes of 8, 10, 12 and 14 mm with the volume fractions of 15%, 20% and 25% were investigated. Morphology of the samples was analysed through optical microscopy, and the pore and strut sizes were compared for the designed model and FDM samples. During the compression test, the Neovius structure showed the oscillating behaviour of the stress–strain curve with the larger unit cell size showing fracture across multiple layers in different orientations. Optical analysis of the struts after the compression tests showed that struts are the weakest link with the highest stressed area and the fracture was seen initiated at the struts. Both compressive modulus and strength increased with the increase in volume fraction.



中文翻译:

通过熔合沉积模型制备的Neovius三重周期周期性最小表面细胞结构的压缩行为

研究了三重周期最小表面型Neovius结构的压缩行为。该结构是通过ABS材料中的熔融沉积建模(FDM)增材制造技术制造的。研究了具有8、10、12和14 mm四种不同晶胞尺寸,体积分数分别为15%,20%和25%的Neovius细胞结构。通过光学显微镜分析样品的形态,并比较设计模型和FDM样品的孔和支杆尺寸。在压缩测试期间,Neovius结构显示出应力-应变曲线的振荡行为,较大的晶胞尺寸显示了在不同方向的多层断裂。压缩试验后对支杆进行的光学分析表明,支杆是应力最高的区域中最薄弱的一环,并且断裂是在支杆处开始的。压缩模量和强度都随着体积分数的增加而增加。

更新日期:2019-05-20
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