Numerical Analysis of Three-Dimensional Braided Composite by Means of Geometrical Modeling Based on Machine Emulation

Tolosana, N.; Carrera, Marco; Villoria, Roberto Guzmán de; Castejón, Luis; Miravete, Antonio

doi:10.1080/15376494.2011.578784

Cited by 18 publications

(9 citation statements)

References 24 publications

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“…The hexagonal braider in University of British Columbia (UBC) was shown in figure 1, b. Generally, researchers tried to establish the yarn model through spatial coordinates on yarn trajectory, and the spatial coordinates were determined by every position of yarn carriers' movement and the take-up speed [12][13]. So it needs to confirm horngear rotation sequence, initial positions of yarn carriers and take-up speed for hexagonal fabric structure establishment.…”

Section: Methods and Discussionmentioning

confidence: 99%

Simulation and characterization of circular hexagonal braiding fabricstructure

Lyu

Chen

et al. 2020

Industria Textila

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Hexagonal braiding technology is a kind of state-of-the-art braiding method, which uses hexagonal horngears to driveyarn carriers and make yarns intertwined into fabrics. In terms of hexagonal braiding principles, the braiding parameterslike initial arrangement of yarn carriers, yarn number and horngears sequence were defined, and then the movementpaths of yarn carriers in hexagonal braiding process and stitch length were obtained, which could be converted intocoordinates on the xoy plane and the coordinates along z-axis. In that case, a group of spatial coordinates were got tocreate the yarn trajectories and fabric structures in Matlab. And then, B-spline curve was utilized to fit the yarntrajectories. Considering the compactness of hexagonal fabric, the coordinates conversion algorithm and conversionmatrix were utilized to optimize the fabric structure, so a more compact fabric structure was established. The braidingangle variation and volume fraction of fabric showed that after coordinates conversion the braiding angles became morestable than original fabric model, and the fiber volume fraction of fabric was improved too. So the fabric structure modelwas available to describe hexagonal fabric structure, which can offer the reference for the further study on properties ofhexagonal braiding technology and application of hexagonal braided fabric

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Section: Methods and Discussionmentioning

confidence: 99%

Simulation and characterization of circular hexagonal braiding fabricstructure

Lyu

Chen

et al. 2020

Industria Textila

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“…Machine simulation is a common analysis method for establishing a complete process model, depending on the material system and process parameters. 10,11 3D braiding processes are classified into two main types: rowand-column and rotary braiding. 12,13 Many braiding algorithms and structural models have been proposed for row-and-column braiding, the earliest and most widely used process.…”

Section: Introductionmentioning

confidence: 99%

A matrix computing method for visualizing switchless controlled 3D hexagonal‐annular rotary braiding process architecture

Zhang

et al. 2023

Polymer Composites

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Numerous process architectures for fabric molding are investigated because fiber braided structure is closely related to the performance of fiber‐reinforced composites. However, existing methods for calculating process architectures have to deal with the coordinates of each fiber when modeling the three‐dimensional braiding method without individually controlled switches. The amount of data grows geometrically as the number of fibers and braiding steps increases. A methodology that enables simple and efficient computation of a model of the relationship between braiding parameters and fiber structure is urgently needed. This paper proposes a novel algorithm to trace the yarn carrier trajectories through machine simulation with Euler rotation‐matrix operations. To predict the real fabric architecture, a contraction factor is introduced to optimize the yarn trajectory while considering the volume of the yarn. The optimized fabric architecture is explored and the braiding process architecture with different braiding parameters is simulated according to the algorithm. Based on the exploration of the relationship between the braiding parameters and the process structure, a hexagonal‐annular braiding machine was established, which can fabricate fabrics with different cross‐sectional shapes. The simulation results were verified by the braiding experiments.

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“…In contrast, a procedure which requires the dispersion solution for the wave characterization of the medium could be termed indirect. Possible applications of the proposed procedure on heterogeneous media include functionally graded plates [28], 3D braided composite [29], 3D woven composites [30,31] and stud based double-leaf walls [4,5].…”

Section: Introductionmentioning

confidence: 99%