Consideration of the yarn–yarn interactions in meso/macro discrete model of fabric

Boubaker, Bilel Ben; Haussy, Bernard; Ganghoffer, Jean‐François

doi:10.1016/j.mechrescom.2007.02.002

Cited by 24 publications

(10 citation statements)

References 2 publications

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“…It must be noticed that two analysed zones (I and II) of fabrics biaxial deformation are also characteristic to its behaviour in uniaxial stretching, which occurs when tensile loads are applied on the fabric and which were described in several research works [14,15]. Pull-on ease h 1 , mm (I zone) The first zone reflects the inter-fibre friction, inter-yarn friction and decrimping of the yarns, which results in relatively high elongation, though the overall tensile stress remains quite small.…”

Section: Resultsmentioning

confidence: 99%

The Investigation of Soft Furniture Upholstery Deformational Behaviour

Zubauskiene

Strazdiene

Urbelis

et al. 2012

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Textile materials, which are different in fibre content, weave type, density and thickness, as well as multi-layered synthetic leathers, are used in soft furniture upholstery production. Deformation - relaxation behaviour, which depends on mechanical properties of such materials differs significantly, also. From this standpoint substantial problem exists in soft furniture production, because the dimensions of its upholstery patterns, i.e. initial pretention must be adjusted taking into account the differences of applied materials mechanical properties. Otherwise external view and quality of upholstery may be unacceptable due to obvious visual material excess on soft furniture surfaces, which is called pull-on ease. The aim of this investigation was to determine the dependencies between three different levels of soft furniture upholstery pre-tension and corresponding values of pull-on ease. New testing method presented in this study allows defining soft furniture upholstery deformational behaviour and its regularities in respect to the initial dimensions of upholstery patterns.

DOI: http://dx.doi.org/10.5755/j01.ms.18.4.3099

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Section: Resultsmentioning

confidence: 99%

The Investigation of Soft Furniture Upholstery Deformational Behaviour

Zubauskiene

Strazdiene

Urbelis

et al. 2012

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DOI: http://dx.doi.org/10.5755/j01.ms.18.4.3099

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“…Later modifications included race track cross section [8] and deformable geometries [9][10][11]. Particle spring models introduced and developed by the researchers, provide another approach to meso-scale modeling [12][13][14][15]. The discrete element modeling approach of Provot [16] and Parsons et al [17] are similar in approach and allow a yarn to be modeled by its property at some discrete points along its length.…”

Section: Introductionmentioning

confidence: 99%

A Method of Modeling Fabric Shear using Finite Element Analysis

Chichani

Guha

2014

J. Inst. Eng. India Ser. E

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Fabric modeling may be attempted by modeling fibres or yarns or small fabric units. The first is computationally intensive while the third does not allow relationships between the fabric's structure and its mechanical properties to be predicted. The second approach has been the most widely used so far. Out of the various ways in which this has been attempted, the finite element approach offers high flexibility while allowing the procedure to be relatively simple because of the availability of user-friendly softwares. This work explores a two-step finite element approach for modeling in-plane fabric shear. A major innovation of the modeling process was that the path of yarns in the fabric was allowed to evolve through the modeling process rather than being pre-defined. The relationship between shear angle and shear stress predicted by this model was compared with that obtained from a picture frame shear experiment. It was found that modeling the yarn with a set of anisotropic properties, gave very good correlation with experimental results.

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“…A discrete model of fabric has been developed, see the recent contributions [12,13], relying on a topological description of the yarns as an undulated beam modelled by analogical spring elements, in connection with a given kinematics of the analogical elements (extensional, flexional and torsional springs). This kind with extensional, flexional and shear-like springs; however, the model does only consider the in-plane deformation of the pattern, and thus excludes the displacements of the nodes outside the initial plane of the tissue, which clearly appears as a strong restriction.…”

Section: Introductionmentioning

confidence: 99%

“…This kind with extensional, flexional and shear-like springs; however, the model does only consider the in-plane deformation of the pattern, and thus excludes the displacements of the nodes outside the initial plane of the tissue, which clearly appears as a strong restriction. Since those models have been developed at length in the contributions [12,13], we shall only focus on the main improvements of the methodology and refer the reader to the referenced works for further details. Regarding notations, vectors are represented by boldface symbols.…”

Section: Introductionmentioning

confidence: 99%

Mesoscopic Models of Wovens: A General Strategy Based on the Minimization of the Potential Energy Involving Genetic Algorithms

Boubaker

Ganghoffer

2010

Int J Mater Form

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Mesoscopic discrete models of dry fabric have been developed based on a discretization of the yarn geometry, accounting for the yarn-yarn interactions at the yarns crossing points. From a mechanical viewpoint, yarns are modeled as elastic straight bar elements representing stretching springs connected at frictionless hinges by rotational springs. The motion of each node along the yarn is described by a lateral displacement and a local rotation. The expression of the reaction force exerted by the transverse yarns at the contact points is assessed from Timoshenko beam theory. In a general situation, the reaction force is obtained by solving a linear system of equations involving all the nodal displacements at the contact points (with the transverse yarns) for each yarn. The equilibrium shape of the woven is obtained as the minimum of its total potential energy, accounting for the work of the reaction forces due to the transverse yarns. The finding of the absolute minimum of the structure's total potential energy is achieved by a genetic algorithm, based on an initial guess of the solution relying on beam mechanics. Simulations of the fabric response under uniaxial tension evidence the effect of yarn-yarn interactions due to the increase of the reaction forces, as well as the effect of the transverse yarn properties. Plain weave has a nonlinear response due to the crimp change, whereas serge shows a quasi linear response due to yarn extension being the dominant deformation mechanism. .

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Consideration of the yarn–yarn interactions in meso/macro discrete model of fabric

Cited by 24 publications

References 2 publications

The Investigation of Soft Furniture Upholstery Deformational Behaviour

The Investigation of Soft Furniture Upholstery Deformational Behaviour

A Method of Modeling Fabric Shear using Finite Element Analysis

Mesoscopic Models of Wovens: A General Strategy Based on the Minimization of the Potential Energy Involving Genetic Algorithms

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