Design optimization and additive manufacturing of nodes in gridshell structures

Seifi, Hamed; Javan, Anooshe Rezaee; Xu, Shanqing; Yang, Zhao; Xie, Yi Min

doi:10.1016/j.engstruct.2018.01.036

Cited by 66 publications

(22 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The optimisation process used in this research as shown in figure 4 contains the core elements from the processes established by previous relevant research [11,12]. Steps 1 and 2 in the design process started by creating the traditional connection model in Fusion 360 and visually optimise its shape [13].…”

Section: ) Optimisation Processmentioning

confidence: 99%

Optimised 3D-Printed Metallic Node-Connections for Reticulated Structures

Abdelwahab¹,

Tsavdaridis²

2019

Preprint

View full text Add to dashboard Cite

Structural Topology Optimisation (STO) is a prevalent optimisation technique used nowadays to reach highly complex and efficient designs (weight-to-stiffness ratio) unable to achieve otherwise. Additive Manufacturing (AM) is a developing manufacturing process which overcomes many of the manufacturing limitations and realises highly optimised products through a layer-based fabrication process. Recent research on reticulated structures proposed using STO and 3D printing to design and fabricate alternative bespoke complex connection designs which have shown its significance through obtaining substantial weight reductions for the same structural capacity. This paper builds on previous research through optimising a single-layer S355 traditional node-connection under four loading cases, producing a state-of-the-art optimised connection design capable of withstanding the four loading cases considered and comparing the results to the traditional ones. In all loading cases, optimised shapes with 46.90% weight reduction were obtained with varying stress levels. A selection of the highly bespoke designs were 3D printed as a proof of concept for the applicability of AM.

show abstract

Section: ) Optimisation Processmentioning

confidence: 99%

Optimised 3D-Printed Metallic Node-Connections for Reticulated Structures

Abdelwahab¹,

Tsavdaridis²

2019

Preprint

View full text Add to dashboard Cite

show abstract

“…e loads acting at joint are the forces transferred in from the surrounding components. During topology optimization, one of its edges or its surfaces usually is assumed totally fixed [33].…”

Section: Parameters For Jointsmentioning

confidence: 99%

From Topology Optimization to Complex Digital Architecture: A New Methodology for Architectural Morphology Generation

Lin

Yang

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

Owing to the capacities of generating structural configuration with both reasonable mechanical properties and high material utilization, topology optimization has been widely adopted in engineering design. Although numerous architects have tried to apply topology optimization tools to assist architectural morphology design in practical projects, topology optimization, like other quantitative analysis techniques, has not been systematically incorporated into the architectural morphology design. In this study, by integrating topology optimization toolsets and parametric design theory, combined with multiattribute decision-making analysis, a design method is proposed that could efficiently obtain several architectural structural architectural morphologies with both structural rationality and aesthetic rules and complete the evaluation and performance ranking of alternatives. In this study, the essential architectural application scenarios are divided into surface application scenarios and volumetric application scenarios, and the possible variation range of topology optimization parameters of architectural application scenarios is defined. By iteratively adjusting the influence parameters, diverse results of structural morphology are obtained. It is found that small changes in optimization parameters will bring great differences in topological results. Such a sensitive relationship can be utilized to generate a set of rational topological structures, and these topological results can be regarded as alternatives for architectural morphology design. For the performance evaluation and ranking analysis of alternatives, the application of FANP-TOPSIS multiattribute decision-making model is put forward in this study. The case study shows that this decision-making analysis model is efficient, convenient, and applicable in the architectural morphology design. The results of this study can provide new ideas and key references for scholars and architects in the field of architecture to explore the process and method of architectural morphology design and other related issues.

show abstract

“…The optimisation process used in this research, as shown in figure 6, contains the core elements from the processes established by previous relevant research [12,13]. Steps 1 and 2 in the design process started by creating the conventional connection model in Fusion 360 and visually optimise its shape [14].…”

Section: Optimisation Processmentioning

confidence: 99%

Application of Topology Optimisation to Steel Node-Connections and Additive Manufacturing

Abdelwahab

Tsavdaridis

2020

Industrializing Additive Manufacturing

View full text Add to dashboard Cite

Structural Topology Optimisation (STO) is a prevalent optimisation technique used nowadays to reach desired weight-to-stiffness ratios via highly complex and efficient designs unable to achieve otherwise. Additive manufacturing (AM) is widely known in the manufacturing industry and provides designers with a higher degree of freedom in realising highly optimised designs through a layer-based fabrication process. This paper focuses on reticulated structures and proposes using STO and AM to design and fabricate alternative connection designs with outstanding bespoke performance and drastically reduced weight. It studies the optimisation of a conventional node-connection found in reticulated timber structures under four loading cases, to producing state-of-the-art optimised connection designs, each capable of withstanding one of the four selected loading cases. The results are compared with the conventional node-connection, and the optimised configurations achieved up to 46.9% weight reduction. A selection of the highly bespoke scaled-down designs was additively manufactured in two different materials (metallic and polymer) as a proof of concept for the capacity of the technologies available for future testing.

show abstract

Design optimization and additive manufacturing of nodes in gridshell structures

Cited by 66 publications

References 23 publications

Optimised 3D-Printed Metallic Node-Connections for Reticulated Structures

Optimised 3D-Printed Metallic Node-Connections for Reticulated Structures

From Topology Optimization to Complex Digital Architecture: A New Methodology for Architectural Morphology Generation

Application of Topology Optimisation to Steel Node-Connections and Additive Manufacturing

Contact Info

Product

Resources

About