Experimentally-validated orthotropic elastic model for Wire-and-Arc Additively Manufactured stainless steel

Laghi, Vittoria; Tonelli, Lavinia; Palermo, Michele; Bruggi, Matteo; Sola, Ramona; Ceschini, Lorella; Trombetti, Tomaso

doi:10.1016/j.addma.2021.101999

Cited by 23 publications

(23 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the latter, greater knowledge is needed about the fundamental materials and geometrical properties of metal additively manufactured components, and about the variability and dependence on process parameters thereof. Research in this direction has already begun (Pinelopi Kyvelou et al 2020;Laghi et al 2020;Laghi, Tonelli, et al 2021;Silvestru et al 2021;), but substantially more is still needed. A relevant study on properties assessment of metal additively manufactured components applied laser scanning to obtain statistical data on the geometric variability of WAAM samples (Figure 11).…”

Section: ))mentioning

confidence: 99%

Role of metal 3D printing to increase quality and resource-efficiency in the construction sector

Kanyilmaz

Demir

Chierici

et al. 2022

Additive Manufacturing

View full text Add to dashboard Cite

Section: ))mentioning

confidence: 99%

Role of metal 3D printing to increase quality and resource-efficiency in the construction sector

Kanyilmaz

Demir

Chierici

et al. 2022

Additive Manufacturing

View full text Add to dashboard Cite

“…The general reference system describes the orientation of the printed layers, while the symmetry axes of the orthotropic medium are denoted as L (longitudinal direction) and T (transversal direction). Previous studies revealed a specific anisotropic relationship between the relative printing orientation and the mechanical response of WAAM-produced stainless steel plates, then modelled as an orthotropic material (as explained in the next section) [12,32].…”

Section: Design Issues and Possibilitiesmentioning

confidence: 99%

“…This suggests the adoption of an orthotropic material model, whose symmetry axes x and y are the main deposition directions and the orthogonal one (longitudinal and transversal direction, L and T, respectively). As such, previous research has been carried out to calibrate an orthotropic plane stress material model for WAAM stainless steel, validated through experimental tests [12,32].…”

Section: Waam Orthotropic Elastic Materials Modelmentioning

confidence: 99%

“…The analytical procedure that follows is fully reported in [12]. The stress-strain model of WAAM stainless steel is written in terms of the compliance matrix C: E x and E y are the Young's moduli along x and y, respectively, ν xy , and ν yx are the Poisson's ratios, and G xy is the shear modulus.…”

Section: Waam Orthotropic Elastic Materials Modelmentioning

confidence: 99%

“…Recent applications of WAAM for large-scale structures exploited two different deposition strategies: (1) a "continuous" strategy, i.e., layer-by-layer deposition, suitable for planar and shell elements [7,8] and (2) a "dot-by-dot" strategy to realize lattice and diagrid structures [9]. With reference to WAAM elements, specific considerations must be made on: (1) the inherent surface roughness, which could influence the mechanical properties [10,11], (2) the marked mechanical anisotropy due to the specific microstructure [12,13],…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Blended structural optimization for wire-and-arc additively manufactured beams

et al. 2022

Self Cite

View full text Add to dashboard Cite

Current manufacturing techniques in the construction sector are slow, expensive and constrained in terms of architectural shapes. In other manufacturing sectors (such as automotive and aerospace) the use of automated construction systems significantly improved the safety, speed, quality and complexity of products. To realize real-scale structural elements for construction applications without ideally any geometrical constraints either in size or shape, the most suitable manufacturing solution for metallic elements is a directed energy deposition (DED) process referred to as wire-and-arc additive manufacturing (WAAM). The main advantage of WAAM relies on the possibility to create new shapes and forms following the breakthrough design tools for modern architecture as algorithm-aided design. At the same time, the printed part ensures high structural performances with reduced material use with respect to the conventional solution. The study presents a new approach called “blended” structural optimization, which blends topology optimization with basic principles of structural design and manufacturing constraints proper of WAAM technology, towards the realization of new efficient structural elements. The approach is applied to the case study of a I-type stainless steel beam on a multi-storey frame building. The approach could pave the way towards an efficient use of WAAM process to produce a new generation of structurally optimized elements for construction, with a more conscious use of the optimization tools and an efficient application of metal 3D printing.

show abstract

Material Properties for Wire‐and‐arc Additively Manufactured Steel

Tankova¹,

Zhu²,

Branco³

2022

ce papers

View full text Add to dashboard Cite

In the era of internet and robots, sophisticated devices and real‐time simulation, the construction sector remains highly dependent on manual labor which is also the main source of delays, lack of quality, and human injuries. The rapid development in technological areas such as mechatronics, computers, sensors, programming, human interfaces, and artificial intelligence offers huge potential for modern applications. Nowadays, additive manufacturing is rapidly growing, and it could provide efficient solutions for steel construction since it can be executed in any shape and scale. There are a few solutions in additive manufacturing technologies, which can process materials and produce components. However, there is a gap in the market for capacity to link the processed material conditions and characteristics to the production parameters in real‐time. Real‐time and cognitive re‐planning of the process parameters becomes significantly important when components with large‐scale and complex shapes are considered. In steel construction, material should comply with strict requirements in terms of its strength and ductility. Hence, it is necessary to characterize the material properties before their application in construction. This paper presents material characterization for WAAM fabricated steel coupons, considering different directions with respect to the deposition direction.

show abstract

Experimentally-validated orthotropic elastic model for Wire-and-Arc Additively Manufactured stainless steel

Cited by 23 publications

References 37 publications

Role of metal 3D printing to increase quality and resource-efficiency in the construction sector

Role of metal 3D printing to increase quality and resource-efficiency in the construction sector

Blended structural optimization for wire-and-arc additively manufactured beams

Material Properties for Wire‐and‐arc Additively Manufactured Steel

Contact Info

Product

Resources

About