Spatial modelling of 3D-woven textiles

Stig, Fredrik; Hallström, Stefan

doi:10.1016/j.compstruct.2011.12.003

Cited by 103 publications

(81 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The 'initial metric method' in FE code PAM-CRASH was then used to deform the initial mesh towards the reference mesh whilst being bounded by moulding plates and preventing any yarn interpenetration. Stig and Hallström proposed a fundamentally similar technique involving the expansion of yarns, while utilising a slightly different modelling approach [20,21]. Here, the initial geometry was similar to that used by Pickett et al …”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of 3D woven preform deformations

Green¹,

Long²,

Said³

et al. 2014

Composite Structures

139

View full text Add to dashboard Cite

In order to accurately predict the performance of 3D woven composites, it is necessary that realistic textile geometry is considered, since failure typically initiates at regions of high deformation or resin pockets. This paper presents the development of a finite element model based on the multi-chain digital element technique, as applied to simulate weaving and compaction of an orthogonal 3D woven composite. The model was reduced to the scale of the unit cell facilitating high fidelity results combined with relatively fast analysis times. The results of these simulations are compared with micro computed tomography (CT) scans of a dry specimen of fabric subjected to in-situ compaction. The model accurately depicted all of the key features of the fabric including yarn waviness and cross-sectional shapes as well as their development with compaction. A parametric study is presented to characterise the effect of the model inputs on the analysis speed and accuracy.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical modelling of 3D woven preform deformations

Green¹,

Long²,

Said³

et al. 2014

Composite Structures

139

View full text Add to dashboard Cite

show abstract

“…As a consequence, in order to preserve the overall fiber volume fraction in the composite (typically between 50 and 60%), the fiber volume fraction in the yarns must be set to higher values than those observed in reality (sometimes 90%, or higher [41]). Yarn shapes closer to those of the real composite can be obtained from FE modeling of the dry fabric preforming [15,16,42]. In this work, the dry fabric compaction is simulated in order to generate geometries of a slightly unbalanced four-layered plain weave fabric.…”

Section: Dry Fabric Compaction Modelingmentioning

confidence: 99%

Experimental characterization and numerical modeling of damage at the mesoscopic scale of woven polymer matrix composites under quasi-static tensile loading

Doitrand

Fagiano

Chiaruttini

et al. 2015

Composites Science and Technology

View full text Add to dashboard Cite

a b s t r a c tThe mechanical behavior of a four-layer plain weave glass fiber/epoxy matrix composite is modeled at the mesoscopic scale, taking into account the dry fabric preforming before resin injection, the relative shift and nesting between fabric layers, and the characteristic damage mechanisms, i.e., intra-yarn cracking and decohesion at the crack tips. The surface strain fields obtained numerically are similar to the strain fields observed at the surface of the specimen. Damage is modeled by introducing discrete cracks in the FE mesh of the representative unit cell of the composite. The crack locations are determined using a stress based failure criterion. The predicted locations are similar to those observed experimentally. The effects of intra-yarn cracks on the macroscopic mechanical properties show the same trends as the experimental data. Good quantitative agreement is obtained if yarn/yarn or yarn/matrix decohesions at the crack tips are taken into account.

show abstract

“…The discussions about difficulties which have been treated in the literature [5,10,[21][22][23] are not in the scope of the present paper.…”

Section: Introductionmentioning

confidence: 94%

Modelling of Failure of Woven Composites. Part 2: Experimental and Numerical Justification of the Interzone Concept

et al. 2016

View full text Add to dashboard Cite

The failure of woven composites has been examined. This study is presented in two parts:-Modelling of failure of woven composites. Part 1: nomenclature defining the interzone concept; -Modelling of failure of woven composites. Part 2: experimental and numerical justification of the interzone concept.In the first part, the concepts of the interzone and the geometry of an interzone have been defined in a general way for a large panel of woven composites. In the second part, it has A. ThionnetAppl Compos Mater been shown that the failure of woven composites is well described by using the interzone concept. The load transfer between intact interzones and broken interzones has been evaluated for two types of loadings (tensile loading and loading in bending). The analysis of these load transfers explains why in the case of a tensile loading the failure is of a suddendeath type whereas in the case of bending loading the failure is progressive. The concept of failure of an interzone has been also defined.

show abstract

Spatial modelling of 3D-woven textiles

Cited by 103 publications

References 18 publications

Numerical modelling of 3D woven preform deformations

Numerical modelling of 3D woven preform deformations

Experimental characterization and numerical modeling of damage at the mesoscopic scale of woven polymer matrix composites under quasi-static tensile loading

Modelling of Failure of Woven Composites. Part 2: Experimental and Numerical Justification of the Interzone Concept

Contact Info

Product

Resources

About