Simulating the deformation mechanisms of knitted fabric composites

Duhovic, Miro; Bhattacharyya, Debes

doi:10.1016/j.compositesa.2005.12.029

Cited by 102 publications

(71 citation statements)

References 19 publications

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“…The main benefit of the hypoelastic models such as presented in Section 3.2.1 is that they are suitable for extension to plasticity (28) can be extended to:…”

Section: Plasticitymentioning

confidence: 99%

“…The FE analysis is then concerned with those elements that are in contact or are linked by springs [23][24][25][26][27][28][29][30]. The advantage over the continuous approach is that description of internal structure of the reinforcement naturally accounts for some aspects of the material, such as directions of fibers and contact between fibers.…”

Section: Notationsmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of 3D interlock composite preforming

Luycker

Morestin

Boisse

et al. 2009

Composite Structures

110

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“…The main benefit of the hypoelastic models such as presented in Section 3.2.1 is that they are suitable for extension to plasticity (28) can be extended to:…”

Section: Plasticitymentioning

confidence: 99%

Section: Notationsmentioning

confidence: 99%

Simulation of 3D interlock composite preforming

Luycker

Morestin

Boisse

et al. 2009

Composite Structures

110

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“…On the other hand, some authors present fully discrete models of fabrics based on modeling of the woven yarns usually described by simplified elements such as beams and springs [14][15][16][17][18]. A major difficulty lies in the very large number of components at mesoscale and the very large number of contacts with friction between them.…”

Section: Introductionmentioning

confidence: 99%

A Meso–Macro Three Node Finite Element for Draping of Textile Composite Preforms

Hamila¹,

Boisse²

2007

Appl Compos Mater

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The composite textile reinforcement draping simulations allows the conditions for a successful process to be determined and, most importantly, the positions of the fibres after forming to be known. This last point is essential for the structural computations of the composite part and for resin injection analyses in the case of LCM processes. Because the textile composite reinforcements are multiscale materials, continuous (macro) approaches and discrete (meso) approaches that model the yarns have been developed. The finite element that is proposed in this paper for textile fabric forming is composed of woven unit cells. The mechanical behaviour of these is analyzed by 3D computations at the mesoscale regarding biaxial tensions and in plane shear. The warp and weft directions of the woven fabric can be in arbitrary direction with respect to the direction of the element side. This is very important in the case of multi-ply deep drawing and when using remeshing. The element is efficient because it is close to the physic of the woven cell while avoiding the very large number of unknowns in the discrete approach. A set of validation tests and forming simulations on single ply and multi-ply are presented and show the efficiency of the approach. In particular the importance of the in-plane shear behaviour is emphasized in the case of a draping on a cube.

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“…Researchers have looked at replicating the manufacturing processes used by knitting machines [Eberhardt et al 2000;Duhovic and Bhattacharyya 2006]. These processes produce correct knitted patterns, but are typically extremely slow (limiting them to small patches of material), and support only a limited set of stitch types much like real knitting machines.…”

Section: Prior Workmentioning

confidence: 99%

Stitch meshes for modeling knitted clothing with yarn-level detail

Yuksel¹,

Kaldor²,

James³

et al. 2012

TOG

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Figure 1: Stages of our knitted garment modeling system: (a) We begin our interactive modeling process with a polygonal mesh that specifies the global shape of the cloth model; (b) using this polygonal mesh we produce a high-resolution stitch mesh that serves as a canvas-like abstraction of the yarn model; (c) then, we specify the desired knitting pattern over the stitch mesh's surface. (d) Following the interactive modeling process, the model goes through offline relaxation, beginning with a mesh-based relaxation that moves the stitch mesh to the subdivision surface of the input model and slides its vertices over this surface based on the topology of the knitting pattern; finally, (e) we generate the yarn curves and (f) use a physically based relaxation process at the yarn level to compute the final realistic shape. AbstractRecent yarn-based simulation techniques permit realistic and efficient dynamic simulation of knitted clothing, but producing the required yarn-level models remains a challenge. The lack of practical modeling techniques significantly limits the diversity and complexity of knitted garments that can be simulated. We propose a new modeling technique that builds yarn-level models of complex knitted garments for virtual characters. We start with a polygonal model that represents the large-scale surface of the knitted cloth. Using this mesh as an input, our interactive modeling tool produces a finer mesh representing the layout of stitches in the garment, which we call the stitch mesh. By manipulating this mesh and assigning stitch types to its faces, the user can replicate a variety of complicated knitting patterns. The curve model representing the yarn is generated from the stitch mesh, then the final shape is computed by a yarn-level physical simulation that locally relaxes the yarn into realistic shape while preserving global shape of the garment and avoiding "yarn pull-through," thereby producing valid yarn geometry suitable for dynamic simulation. Using our system, we can efficiently create yarn-level models of knitted clothing with a rich variety of patterns that would be completely impractical to model using traditional techniques. We show a variety of example knitting patterns and full-scale garments produced using our system.

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Simulating the deformation mechanisms of knitted fabric composites

Cited by 102 publications

References 19 publications

Simulation of 3D interlock composite preforming

Simulation of 3D interlock composite preforming

A Meso–Macro Three Node Finite Element for Draping of Textile Composite Preforms

Stitch meshes for modeling knitted clothing with yarn-level detail

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