Prototyping knit tensegrity shells: a design-to-fabrication workflow

Gupta, Sachin; Tan, Ying Yi; Chia, Pei Zhi; Pambudi, Christyasto P.; Quek, Yu Han; Yogiaman, Christine; Tracy, Kenneth

doi:10.1007/s42452-020-2693-4

Cited by 13 publications

(12 citation statements)

References 9 publications

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“…This allows for simulations of larger structures compared to the first approach. Additionally, several mesh topologies such as quad-, triangle-, hexagon-and nonuniform ones are explored [7,20,26,30,31,33].…”

Section: 2mentioning

confidence: 99%

“…as they provide flexibility to customize digital functions. They enable researchers and practitioners to efficiently generate and assess various design options, simulate the behavior of knitted structures under different conditions with variegated material differentiation, optimize structural performance, and generate fabrication data specifically catered to industrial knitting machines [7,18,23,27,33,39]. However, the heterogeneous and irregular distribution of material density in CNC-knitted membranes presents challenges for reliable digital simulations.…”

Section: Introductionmentioning

confidence: 99%

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Simulation calibration of differentiated knitted membranes with evolutionary optimisation tools

Sinke,

Tamke,

Thomsen

2024

ACSE

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Knitting offers a flexible and customizable approach in architectural textile applications, challenging traditional woven membranes [28]. CNC (computer numerical control)-knitting technology enables the creation of gradient expansion membranes through precise stitch control, facilitating large-scale production with minimal waste [25,27,34]. This departure from cut-patternbased strategies typical in woven membranes allows for integration of diverse material properties in a single process. Our research focused on guiding material expansion in knitted membranes to achieve complex, non-developable surfaces through digital form-finding and structural analysis. However, the irregular material density distribution posed challenges in reliable digital simulations due to complexity and knowledge gaps. Successful simulation models require a deep understanding of material properties and abstraction strategies to balance computational feasibility and accuracy. Our study investigated these challenges through prototyping and calibration of simulation models, aiming for more geometrically accurate results in designing with differentiated CNCknitted membranes. Here, we presented the extension of the method for simulation and calibration of graded textiles, published earlier by the authors [32,35]. We extended previous methods for simulating graded textiles, experimenting with CNC-knitted ceiling panels of varied geometries and material gradients. Calibration involves adjusting stiffness values and mesh representations using evolutionary optimization algorithms to reduce geometric deviations between digital simulations and their physical artifacts (Figure 1).

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Section: 2mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation calibration of differentiated knitted membranes with evolutionary optimisation tools

Sinke,

Tamke,

Thomsen

2024

ACSE

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“…as they provide flexibility to customize digital functions. They enable researchers and practitioners to efficiently generate and assess various design options, simulate the behavior of knitted structures under different conditions with variegated material differentiation, optimize structural performance, and generate fabrication data specifically catered to industrial knitting machines 3,[12][13][14][15][16] . However, the heterogeneous and irregular distribution of material density in CNC-knitted membranes presents challenges for reliable digital simulations.…”

Section: Adoption Of Knitting Technology For Structural Membrane Designmentioning

confidence: 99%

Simulation Calibration Of Differentiated Knitted Membranes With Evolutionary Optimisation Tools

Sinke,

Tamke,

Thomsen

2023

XI Textile Composites and Inflatable Structures

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Knit, with its inherent flexibility and ability to integrate bespoke material performance, creates a promising alternative to traditionally woven membranes in architectural textile applications. The CNC-knitting technology allows for the manufacturing of membranes with gradient expansion properties by numerically controlling the distribution of varied stitches. In architectural knitted structures, material programming is used to achieve complex bespoke three-dimensional surfaces at a large scale, with a minimum residual waste during continuous digital manufacturing 2-4 . This permits to depart from the cut-pattern-based strategy commonly used for woven non-expandable membranes while allowing for the integration of multiple material properties in a single production process.

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“…2.2. We call metatensegrities those high-performance and eye-capturing systems that are at times referred to as TS structures just because they feature cables and struts, although some of their parts are of a different nature, as for example when some or all cables are replaced by membranes (see [37,38] and the literature cited therein). A second example of metatensegrity is the Blur Building (Fig.…”

Section: Metatensegritiesmentioning

confidence: 99%

Seventy years of tensegrities (and counting)

Micheletti

Podio–Guidugli

2022

Arch Appl Mech

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We try to make a long way short by proceeding per exempla from Kenneth Snelson’s sculptures and Richard Buckminster Fuller’s coinage of the term tensegrity to modern tensegrity metamaterials. We document the passage from initial interest in tensegrity frameworks for their visual impact to today’s interest, driven by their peculiar structural performances. In the past seventy years, the early art pieces and roofing structural complexes have been followed by formalization of the principles governing the form-finding property of ‘pure’ tensegrity structures and by engineering hybridization leading to a host of diverse practical applications, such as variable-geometry civil engineering structures, on-earth and in-orbit deployable structures and robots, and finally to recent and promising studies on tensegrity metamaterials and small-scale tensegrity structures.

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Prototyping knit tensegrity shells: a design-to-fabrication workflow

Cited by 13 publications

References 9 publications

Simulation calibration of differentiated knitted membranes with evolutionary optimisation tools

Simulation calibration of differentiated knitted membranes with evolutionary optimisation tools

Simulation Calibration Of Differentiated Knitted Membranes With Evolutionary Optimisation Tools

Seventy years of tensegrities (and counting)

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