Implementation of an elastoplastic constitutive model for 3D-printed materials fabricated by stereolithography

Wang, Shu Heng; Ma, Yongbin; Deng, Zichen; Zhang, Kai; Dai, Shi

doi:10.1016/j.addma.2020.101104

Cited by 29 publications

(30 citation statements)

References 19 publications

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“…The tensile strength of 3D-printed samples was also shown by Sagias et al [ 16 ], Dizon et al [ 17 ], and Maso and Cosmi [ 18 ], and compression strength was studied by Mercado-Colmenero et al [ 19 ] and Casavola et al [ 20 ]. Uniaxial tensile tests were carried out on standard SLA-printed specimens to obtain their elastic modulus and ultimate tensile strength in order to develop the constitutive material model by Wang et al [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Influence of Curing Time on Strength Behavior of SLA-Printed Samples Loaded with Different Strain Rates

2020

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Stereolithography (SLA) is an additive manufacturing process based on the photocuring of resins with the use of UV light. The printed samples can be used not only for the visualization of structures, but also to develop elements of real constructions. In the study, SLA-printed samples made of Formlabs’ Durable Resin were tested in static, dynamic, and Hopkinson’s bar tests. The recommended UV and heat curing time for this resin is 60 min for each process. For the tests, 5-minute and 30-min curing times were also considered. The obtained stress-strain curves were compared. The resin showed a difference in response to the strain rate effect and a curing time influence was noticed. For the static tests, the post-curing time had the greatest effect with a very small standard deviation. For the dynamic tests, similar dependencies were observed but with a greater standard deviation. The tests at very high strain rates were associated with a much greater level of difficulty in execution, recording, and signal analyzing, and the influence of the exposure time on the mechanical properties was not straightforward. The tested resin showed strengthening with increases in the strain rate as well as in the curing time.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Influence of Curing Time on Strength Behavior of SLA-Printed Samples Loaded with Different Strain Rates

2020

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“…Farklı yazdırma açılarına sahip parçalarda mekanik özellikler yazdırma açısına bağlı olarak önemli oranda değişmektedir. Yönlenmeye bağlı mekanik özelliklerin değiştiği malzemelerde Hill akma kriterinin kullanımı birçok çalışmada önerilmektedir [24,27,39]. Hill akma kriteri von Mises akma kriterinin anizotropik malzeme özelliklerini kapsayacak şekilde genişletilmiş versiyonu olarak düşünülebilir [38].…”

Section: Akma Kriteri (Yield Criteria)unclassified

Yazdırma Açısının 3B Yazıcıda Üretilen PLA Numunenin Mekanik Özellikleri Üzerine Etkisinin Deneysel ve Sonlu Elemanlar Metodu ile İncelenmesi

Öz

Öztürk

2023

Politeknik Dergisi

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“…In most cases, the elements deposited by ST-AM processes are homogeneous and approximately isotropic or transversely isotropic, so most of the anisotropy in the macro-scale final part comes from the structure of the elements (Shofner et al , 2003; Ahn et al , 2002; Cattenone et al , 2018; Rodríguez et al , 2003; Alaimo et al , 2017; Hague et al , 2004; Li et al , 2020; Wang et al , 2020; AlMangour et al , 2017; Cahill et al , 2009; Geiger et al , 2016).…”

Section: Mechanics Of Fused Deposition Modeling As Scanning-type Addi...mentioning

confidence: 99%

“…Most ST-AM-processed parts contain natural meso-scale inclusions and voids left from the processing (Wu et al , 2018; Taheri et al , 2017; Masuo et al , 2018; Yao et al , 2018; Gordeev et al , 2018; He et al , 2018). In most cases, the elements deposited by ST-AM processes are homogeneous and approximately isotropic or transversely isotropic, so most of the anisotropy in the macro-scale final part comes from the structure of the elements (Shofner et al , 2003; Ahn et al , 2002; Cattenone et al , 2018; Rodríguez et al , 2003; Alaimo et al , 2017; Hague et al , 2004; Li et al , 2020; Wang et al , 2020; AlMangour et al , 2017; Cahill et al , 2009; Geiger et al , 2016). In most cases, the elements and their layout for ST-AM processes are designable, producing 2.5D of design freedom in an individual layer and three dimensions (with some limitations, as discussed in Sections 2 and 4) (Gardan et al , 2016; Gardan, 2017; Gardan et al , 2017; Ahn et al , 2002) of design freedom for the whole final part.…”

Section: Mechanics Of Fused Deposition Modeling As Scanning-type Addi...mentioning

confidence: 99%

Manufacturing process-driven structured materials (MPDSMs): design and fabrication for extrusion-based additive manufacturing

Patterson

Chadha

Jasiuk³

2021

RPJ

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Purpose This paper aims to explore the design and fabrication of meso-scale Manufacturing Process-Driven Structured Materials (MPDSMs). These are designed, architected materials where the prime design requirement is manufacturability. The concepts are applied to those fabricated using fused deposition modeling or fused filament fabrication (FDM/FFF), a thermoplastic polymer additive manufacturing (AM) process. Three case studies were presented to demonstrate the approach. Design/methodology/approach The paper consists of four main sections; the first developed the MPDSMs concept, the second explored manufacturability requirements for FDM/FFF in terms of MPDSMs, the third presented a practical application framework and the final sections provided some case studies and closing remarks. Findings The main contributions of this study were the definition and development of the MDPSMs concept, the application framework and the original case studies. While it is most practical to use a well-defined AM process to first explore the concepts, the MPDSMs approach is neither limited to AM nor thermoplastic polymer materials nor meso-scale material structures. Future research should focus on applications in other areas. Originality/value The MPDSMs approach as presented in this concept paper is a novel method for the design of structured materials where manufacturability is the prime requirement. It is distinct from classic design-for-manufacturability concepts in that the design space is limited to manufacturable design candidates before the other requirements are satisfied. This removes a significant amount of schedule and costs risk from the design process, as all the designs produced are manufacturable within the problem tolerance.

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Implementation of an elastoplastic constitutive model for 3D-printed materials fabricated by stereolithography

Cited by 29 publications

References 19 publications

Experimental Study on Influence of Curing Time on Strength Behavior of SLA-Printed Samples Loaded with Different Strain Rates

Experimental Study on Influence of Curing Time on Strength Behavior of SLA-Printed Samples Loaded with Different Strain Rates

Yazdırma Açısının 3B Yazıcıda Üretilen PLA Numunenin Mekanik Özellikleri Üzerine Etkisinin Deneysel ve Sonlu Elemanlar Metodu ile İncelenmesi

Manufacturing process-driven structured materials (MPDSMs): design and fabrication for extrusion-based additive manufacturing

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