Avaliação do comportamento mecânico dos polímeros ABS e PLA em impressão 3D visando simulação de desempenho estrutural

Martinez, Andressa Carmo Pena; Souza, Douglas Lopes de; Santos, Denise Mônaco dos; Pedroti, Leonardo Gonçalves; Carlo, Joyce Correna; Martins, Marianna Auxiliadora Dias

doi:10.11606/gtp.v14i1.148289

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…In this configuration 329g of PLA filaments were used. Earlier research about application of ABS and PLA in additive manufacturing (Martinez, Souza, Santos et al, 2019) informed the choice of material. 44% of the material use went into the support structure.…”

Section: Resultsmentioning

confidence: 99%

Smart Structures in Architectural Projects: Towards an interactive design framework combining multiscalar structural optimisation and custom-optimized structural nodes for generative design

Himsel,

Schaller,

Muehlbauer

2022

urbearq

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Interactive mass customisation is changing practice in the architecture, engineering, and construction (AEC) industry. Future workflows in software systems could address human-in-the-loop technology to augment human creative capacities. Early design stages require quick and well-informed decisions in response to data available from building information modelling technology. Architectural de-sign has been transformed by the in-troduction of design software but until recently the actual design has continued to be performed by the architect. That has begun to change with the exploration of interactive design frame works. Optimizing structures on multiple scales effects both, the overall structure in dependence of the architectural geometry and the local expression of 3D printed structural nodes. The reported research explored an algo-rithm to close geometric gaps in generative design of structural components. This foam-like algorithm allowed the artist and architect to design New Structuralism style using a combination of different optimisation routines. As a result, the SPUME algorithm was investigated to inte-grate several geometric parts in an organic shape for design of custom-optimized structural nodes. As part of the case study, a pavilion with a tessellated structure and 3D printed custom-optimized structural nodes was designed by an artist and an architect to showcase the application potential of the conceptualized framework. Finally, a prototype for connecting brackets and BESO optimized shape of the structural nodes was produced to combine all aspects of the local node geometry in the tectonic representation.

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Section: Resultsmentioning

confidence: 99%

Smart Structures in Architectural Projects: Towards an interactive design framework combining multiscalar structural optimisation and custom-optimized structural nodes for generative design

Himsel,

Schaller,

Muehlbauer

2022

urbearq

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show abstract

“…Research 1 (Figure 1) focuses on the measurement of the mechanical behavior of materials, specifically the evaluation of the mechanical behavior of ABS and PLA polymers in the form of thermoplastic filaments commonly used in affordable 3D printers, subjected to axial compression and flexion forces (Martinez et al, 2019). It is the first stage of an ongoing research project, the first tests of which have indicated different compressive strengths depending on the internal mesh, performance, and dimensional deformation of the materials under investigation.…”

Section: Performative Design Practicesmentioning

confidence: 99%

Material-Based Design: Improving a Continuous Changing Praxis

Santos¹,

Paoletti²

2020

Blucher Design Proceedings

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Material-based design has become a wide approach, gathering under the same umbrella different design practices, which deserve to be accurately reexamined. Material-based design involves material performance in complex integration with informational data and processes. However, material-based design operates a new material condition with historical, social, ethical, and political effects. A new term can be used for materiality not only as an objective substance but also as a knowledge-based interrelated element that requires a balance among actors, tools, matters, and meaning.

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“…After printing the test specimens, the compression test is based on the application of a progressive and constant uniaxial load on the test specimens, longitudinally deforming, verifying the material's compressive strength limit. The tests are described and recommended by the ASTM E2954 standard [34]. The test load must be applied continuously at a constant speed of 8.0 mm/minute.…”

mentioning

confidence: 99%

Effect of the Degree of Filling on Mechanical Properties of Polymeric Specimens from Polyethylene Terephthalate Glycol and Polylactic Acid Produced by 3D Printing

Dantas,

dos Santos

2023

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Based 3D printing has become very popular in recent years due to the emergence of projects for low-cost machines, making the technology very accessible. In view of this, some polymers, in general, in thermoplastic filaments, are placed on the market for application in this type of printing technique, making it increasingly necessary to develop research for the characterization of materials to provide information on physical, thermal and mechanical properties. For the development of this work, the polymer poly(ethylene glycol terephthalate) (PETG) was used for a comparative study in relation to poly(lactic acid) (PLA). PETG is obtained by adding modified glycol to the material composition during the polymerization process. It consists of a polymer with a glass transition temperature close to 80°C, with mechanical properties similar to those of PET, with the advantages of notable tenacity, flexibility, and high processing capacity, and PLA is a polymer synthesized from corn sugar, potatoes, and sugar cane, through bioconversion and polymerization. PLA presents biocompatibility, biodegradability, and biological absorption, presenting good mechanical properties, processability, thermal stability and low environmental impact. Mechanical tests of compressive strength and flexural strength were carried out. In the compressive strength test, the specimen with 100% filling presented a deformation 76% greater than the specimen with 50% filling. This can be attributed to the mechanical property of the PETG polymer, as it is very ductile, thus facilitating the processability of this artifact. The mechanical flexural strength tests carried out with the PLA polymer with the highest filling percentages (100% and 50%) showed less deformation until failure, characterizing them as more ductile materials. On the other hand, specimens with 30% filling showed ~215% greater deformation than specimens with 100% filling. With this, it can be seen that PLA has greater flexibility and tenacity for fillings of low percentages, due to the internal spacing absorbing the impact of loads. The PLA polymer showed better mechanical properties, such as Young's modulus, ductility and more satisfactory resistance when compared to the PETG polymer. As well as the synthesis of PLA, it characterizes the process in a more sustainable way, as it is a biopolymer, in addition to its excellent processability.

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Avaliação do comportamento mecânico dos polímeros ABS e PLA em impressão 3D visando simulação de desempenho estrutural

Cited by 7 publications

References 8 publications

Smart Structures in Architectural Projects: Towards an interactive design framework combining multiscalar structural optimisation and custom-optimized structural nodes for generative design

Smart Structures in Architectural Projects: Towards an interactive design framework combining multiscalar structural optimisation and custom-optimized structural nodes for generative design

Material-Based Design: Improving a Continuous Changing Praxis

Effect of the Degree of Filling on Mechanical Properties of Polymeric Specimens from Polyethylene Terephthalate Glycol and Polylactic Acid Produced by 3D Printing

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