Continuum constitutive modeling of woven fabrics

Boljen, Matthias; Hiermaier, Stefan

doi:10.1140/epjst/e2012-01596-0

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…The viscous part consists of two spring elements and two dash-pot elements, with the spring elements being connected in parallel. The use of individual components in the model is in a good agreement with models published for plain woven fabrics made of synthetic materials [7,16,17]. This rheological model can be generally described by a second-order differential Eq.…”

Section: Resultssupporting

confidence: 79%

“…Simple rheological model consisting of linearly elastic element frictional element was used to study creasing of fabrics in [5,6]. Kinematic model for a continuum representation of woven fabric was presented and validated with good agreement with experimental data in [7]. A new rheological model describing the compressional behavior of non-woven fabrics is described in [8] together with verification using 19 nonwovens with high level of correlation between theoretical and experimental data set.…”

Section: Introductionmentioning

confidence: 99%

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Chosen Mechanical Properties of Electric Tape Fences

2023

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This research is focused on electric tape fencing, particularly of fast-moving animals, especially horses. The mechanical behavior of electric fences is of great importance. On the one hand, the fence should be durable enough, but, on the other hand, it should break if a livestock gets spooked and decides to run through to not cause harm to the animal. Main goal of this study is, therefore, to analyze mechanical properties of different electric tape fences during tensile stress and to propose suitable rheological model useful both for describing mechanical behavior and for predicting properties of electric tape fences. The mechanical behavior of electric fences was examined through two main experimental tests: (a) quasi-static tests to gain the full stress/strain responses of the electric tape in tension and (b) dynamic and stress–relaxation tests to characterize the electric tape fence viscoelasticity. It was found out that strength of electric tape fences is directly dependent on total cross-section area of monofilaments, whereas stiffness coefficients and plasticity limits were also studied. Based on the detailed findings from both types of tension tests, a rheological model of the electric fence was proposed. The results show that the model appropriately describes the experimentally obtained data.

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Chosen Mechanical Properties of Electric Tape Fences

2023

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“…138,139 Yet another approach 61 adopted a classical laminated plate theory to develop a homogenized continuum constitutive model for Kevlar fabrics using 2D plane stress elements in ABAQUS. Other homogenized modeling approaches include the works by Nadler et al., 140 Boljen and Hermaier, 141 Grujicic et al. 142 and Erol et al.…”

Section: Modeling Of Fibrils Fibers Yarns Single Layer and Multi-layer Fabricsmentioning

confidence: 99%

Recent advances in modeling and experiments of Kevlar ballistic fibrils, fibers, yarns and flexible woven textile fabrics – a review

Sockalingam

Chowdhury

Gillespie

et al. 2016

Textile Research Journal

106

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Ballistic impact onto flexible woven textile fabrics is a complicated multi-scale problem given the structural hierarchy of the materials, anisotropic material behavior, projectile geometry-fabric interactions, impact velocity and boundary conditions. Although this subject has been an active area of research for decades, the fundamental mechanisms such as material failure, dynamic response, multi-axial loading occurring at the lower length scales during impact are not well understood. This paper reviews the recent advances in modeling and experiments of Kevlar ballistic fibrils, fibers, yarns and flexible woven textile fabrics pertinent to the deformation modes occurring during impact and serves to identify topics worthy of further investigation that will advance the basic understanding of the phenomena governing transverse impact. This review also explores on aspects such as homogeneous versus heterogeneous behavior of yarns consisting of individual fibers and the inelastic transverse behavior of the fiber which is not considered in the previous review papers on this topic.

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“…These models predict the effects of the yarns and are more likely to closely describe crimp and shear effects. Mesoscale models developed by Assid [2], Barbero [3,4], Luo [5] and Boljen [6] treat yarn undulation as a sinusoidal function. Crimp interchange is modeled with either Eulerian or Timoshenko based beam bending.…”

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confidence: 99%

Finite Element Modeling of Plain Weave Fabric from an Un-Woven Initial Yarn Configuration

Ferranto

Luo

2015

Strength Mater

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A technique for modeling the tensile behavior and initial shape forming (weaving) process is presented in this paper. This technique uses FEA methods to model straight yarns as they are woven around each other. Tensile forces may be applied in subsequent load steps to predict the mechanics and strength of the fabric. This approach features innovative boundary conditions taking advantage of multiple levels of symmetry, thus allowing the model to be run using standard, unmodified FEA packages. As the model simulates the forming/weaving process it only requires data about the geometry and material properties of the yarns. This allows for fast characterization of hypothetical fabrics with no need for physical experimentation.Introduction. Woven fabrics and flexible composites are an important class of materials with a wide variety of uses. Flexible composites reinforced with woven fabric have many inherently positive characteristics, the potential for high strength, ease of use, and ease of lay-up in the forming process.Clothing, composite reinforcements, flexible composites, cloth structures, ballistic armors, parachutes, sails and numerous other applications make extensive use of woven fabrics. There is currently a large demand for lightweight military armor made of woven fiber flexible material. Here the large strains allow significantly higher energy absorption and dissipation than a stiff composite, as well as allowing for movement and articulation in the case of body armor. Prior to the curing process many rigid composites behave as flexible composite. The uncured matrix material is liquid and does not affect the structural properties, therefore the flexible woven fabric reinforcement will entirely determine the uncured structural properties. Understanding the mechanics of a composite material with an uncured matrix conforming to a tool shape could improve the lay-up process currently used within industry.Many biological structures, such as skeletal muscles consisting of striated fiber bundles suspended in an extracellular matrix, may be thought of as wavy fiber flexible composites and modeled accordingly.Modeling the mechanical behavior of this class of material presents a significant engineering challenge due to the geometric complexity of yarns undulating around each other. The yarns have a complex shape and may interact with yarns oriented in other directions. Mechanical properties may be both nonlinear and completely different under various loading conditions (uniaxial tension, biaxial tension, shear, bending, etc.).There are a number of different approaches to modeling the mechanics of woven materials. Modeling approaches are generally classified into three broad categories. Macroscale models treat the fabric as a continuum. Mesoscale models look at the effects of the yarns that are woven around each other, treating the yarns as a continuous material. Microscale models include the effects of the fibers that when bundled together comprise most yarns.Macroscale analytical models such as the model developed ...

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Continuum constitutive modeling of woven fabrics

Cited by 3 publications

References 5 publications

Chosen Mechanical Properties of Electric Tape Fences

Chosen Mechanical Properties of Electric Tape Fences

Recent advances in modeling and experiments of Kevlar ballistic fibrils, fibers, yarns and flexible woven textile fabrics – a review

Finite Element Modeling of Plain Weave Fabric from an Un-Woven Initial Yarn Configuration

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