Performance of concrete beam reinforced with 3D printed Bioinspired primitive scaffold subjected to three-point bending

Nguyen‐Van, Vuong; Choudhry, Niranjan Kumar; Panda, Biranchi; Nguyen‐Xuan, H.; Tran, Phuong T.

doi:10.1016/j.autcon.2021.104060

Cited by 55 publications

(19 citation statements)

References 38 publications

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“…TPMS structures in nature, a)-d) the Gyroid structure in butterfly wing, e) the Fischer-Koch structure in nano-porous gold, and f) the Primitive structure in sea urchin microstructure [29] structure can be used to replace the traditional lattice structure or crystal structure. Recently, several articles on lightweight concrete beams and slabs reinforced by 3D printed TPMS shell made of recycled plastic materials have been published with different load types such as static loads [17,31], dynamic load [18], impulsive load [13,14], wave load [16], etc. As a result, it is indicated that these structures show the great potential of using recycled plastic to replace steel material in traditional reinforced concrete beams.…”

Section: Triply Periodic Minimal Surfaces (Tpms)mentioning

confidence: 99%

“…The corrosion resistance of plastics is also an advantage compared with steel rebar reinforced beams [16]. Furthermore, to investigate the ductility of the beam, a polymer fiber-reinforced lightweight cement with a content of about 0.25% total volume of the beam was employed [17]. In this study, the Primitive TPMS cores are used to reinforce the cement beam.…”

Section: Effectiveness Of Plastic Tpms Scaffoldmentioning

confidence: 99%

“…In the previous study of Nguyen-van et al [17], the impact of the TPMS core has been validated with both experiment and Finite Element Analysis simulation. The standard error between simulation and experimental results of one-layer and two-layer beams ranged from 3% to 7%.…”

Section: Effectiveness Of Plastic Tpms Scaffoldmentioning

confidence: 99%

“…6. Stress-strain curve of cement beam, ABS-mold confined cement beam, and TPMS shell-reinforced cement beam [17] In addition, Fig. 6 shows the TPMS core contribution in reducing the brittleness of the cement.…”

Section: Effectiveness Of Plastic Tpms Scaffoldmentioning

confidence: 99%

“…In addition, the TPMS geometry has also been adopted to reinforce the beam structures. Nguyen-van et al [17] have revealed the comparison between two TPMS reinforced cement beams, the plastic molds cement beam, and the plain cement beam. It is claimed that the reinforced beams might provide excellent influences on the peak load and the flexural stiffness under static bending load.…”

Section: Introductionmentioning

confidence: 99%

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Machine learning for predicting mechanical behavior of concrete beams with 3D printed TPMS

et al. 2022

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Bioinspired structures are remarkable porous structures with great strength-to-weight ratios. Hence, they have been applied in various fields including biomedical, transportation, and aerospace materials, etc. Recent studies have shown the significant impact of the plastic 3D printed triply periodic minimal surfaces (TPMS) structure on the cement beam including increasing the peak load, reducing the deflection, and improving the ductility. In this study, a machine learning (ML) surrogate model has been conducted to predict the beam behavior under static bending load. At first, various combinations of plastic volume fractions and numbers of core layers have been adopted to reinforce the constituent beam. The finite element method (FEM) was implemented to investigate the influences of these reinforcement strategies. Next, the above data were employed to create the ML model. A three-process assessment was proposed to achieve the most suitable model for the present problem, these processes were the model hyperparameter tuning, the performance assessment, and the handling overfitting with deep learning (DL) techniques. Consequently, both beam peak loads and maximum deflections were proportional to the volume fraction. The increment in TPMS layers could lead to the enhancement in both traits but with a nonlinear relationship. Furthermore, each trait may be a ceiling value that could not be exceeded with a specific volume fraction despite any number of layers. This conclusion was indicated by the surrogate model predictions. The final model in this study could deal with noisy data from FEM and with the support of a new early stopping condition, excellent performance could be found on both train and test data. The maximum deviations of 2.5% and 3.5% for peak loads and maximum midpoint displacements, respectively, have verified the robustness of the present surrogate model.

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Section: Triply Periodic Minimal Surfaces (Tpms)mentioning

confidence: 99%

Section: Effectiveness Of Plastic Tpms Scaffoldmentioning

confidence: 99%

Section: Effectiveness Of Plastic Tpms Scaffoldmentioning

confidence: 99%

Section: Effectiveness Of Plastic Tpms Scaffoldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Machine learning for predicting mechanical behavior of concrete beams with 3D printed TPMS

et al. 2022

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Mechanical behavior of bio‐inspired composites made of co‐continuous geopolymer and 3D‐printed polymer

Pang,

Mahrous,

Trindade

et al. 2024

Applied Research

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Geopolymers are emerging low‐density ceramic materials that are simple to manufacture, with high elastic modulus and strength, albeit with low toughness. Fiber reinforcements have been used to achieve varied ductile behaviors, but little is known about the geopolymer addition to polymeric frame structures. Thus, drawing inspiration from the nanostructure of bones, this paper investigated an interpenetrating co‐continuous composite consisting of a geopolymer as the stiff but brittle phase and a 3D‐printed polymer (PA12 White) as the soft and deformable phase. The composite's mechanical properties and failure modes were studied experimentally using uniaxial compression and four‐point bending tests. The co‐continuous network constrained brittle cracking within the geopolymer and reduced strain localization in the polymer. The results showed that the composite had higher strength (56.11 ± 2.12 MPa) and elastic modulus (6.08 ± 1.37 GPa) than the 3D‐printed polymer and had higher toughness (5.98 ± 0.24 MJ/mm3) than the geopolymer for the specific geometries examined. The shape effect study demonstrated that cubic structures had higher elastic modulus and strength but at the expense of lower toughness when compared to rectangular prism structures. The study of scale effects indicated that increasing the number of periodic unit cells while maintaining consistent bulk dimensions led to augmented strength and toughness, albeit without statistically significant alterations in elastic modulus. Thus, this paper presents an experimental realization of a novel bio‐inspired interpenetrating geopolymer‐polymer composite design, offering improved strength and toughness. It also provides valuable insights into the shape and size effects on the mechanical properties of this new composite.This article is protected by copyright. All rights reserved.

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Performance of meta concrete panels subjected to explosive load: Numerical investigations

Nguyen‐Van

Peng

Hazell

et al. 2023

Structural Concrete

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Research on strengthening and retrofitting of concrete structures against explosive loading has recently received much attention. This paper proposes a new type of reinforcement for concrete panels to enhance their blast‐resistant capacity. The reinforcement structure is naturally optimized with continuous nonself‐intersecting surfaces, known as triply periodic minimal surface (TPMS)‐primitive scaffold. A numerical model is developed to investigate the performance of TPMS‐primitive reinforced concrete panels against blast loading. The results are validated by experimental data from the literature on a traditional reinforced concrete slab. The concrete slabs reinforced with one, two, and four layers of TPMS‐primitive unit cells are designed and examined, while a quarter of the panel is simulated to reduce the computational cost. A constitutive model that considers the strain‐rate effect is employed to capture the rate‐dependent impulsive behavior of the proposed panels. The numerical results indicate significant enhancements in damage resistance and substantial reductions in deflection of the concrete reinforced panels when the TPMS‐primitive scaffold replaces the rebar lattice. The proposed reinforcement with multiple layers of unit cells retains high efficiency through parametric studies, while changes in the shell thickness of the reinforcement scaffold have limited effects on filtering blast waves.

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Performance of concrete beam reinforced with 3D printed Bioinspired primitive scaffold subjected to three-point bending

Cited by 55 publications

References 38 publications

Machine learning for predicting mechanical behavior of concrete beams with 3D printed TPMS

Machine learning for predicting mechanical behavior of concrete beams with 3D printed TPMS

Mechanical behavior of bio‐inspired composites made of co‐continuous geopolymer and 3D‐printed polymer

Performance of meta concrete panels subjected to explosive load: Numerical investigations

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