Mechanical-Electrical Modeling of Stretching Experiment on 45 ${\rm Nb}_{3}{\rm Sn}$ Strands CICCs

Torre, A.; Bajas, Hugues; Ciazynski, D.; Durville, Damien; Weiss, Klaus-Peter

doi:10.1109/tasc.2010.2091385

Cited by 18 publications

(14 citation statements)

References 8 publications

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“…It has been employed to simulate the mechanical behaviour of entangled fibrous materials [9], as well as the behaviour of textile materials at the scale of constituting fibres [10,11], or to predict and optimize the mechanical behaviour of superconducting cables [1,21].…”

Section: Introductionmentioning

confidence: 99%

Contact-friction modeling within elastic beam assemblies: an application to knot tightening

Durville

2012

Comput Mech

121

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International audienceIn this paper we propose a finite element approach which simulates the mechanical behaviour of beam assemblies that are subject to large deformations and that develop contact-friction interactions. We focus on detecting and modeling contact-friction interactions within the assembly of beams. Contact between beams--or between parts of the same beam in the case of self-contact, is detected from intermediate geometries defined within proximity zones associating close parts of beam axes. The discretization of contact-friction interactions is performed on these intermediate geometries by means of contact elements, constituted of pairs of material particles which are predicted to enter into contact. A 3D finite strain beam model is used to represent the behaviour of each beam. This model describes the kinematics of each beam cross-section using nine degrees of freedom, and is therefore able to represent plane deformations of these cross-sections. Algorithms are proposed to solve the global nonlinear problem using an implicit scheme, under quasi-static assumptions. Simulation results of the tightening and releasing of knots made on monofilament and multifilament yarns are shown as an application. Straight fibers are first twisted together to make a yarn, before suitable conditions are applied to their ends to form and tighten the knot. Tightening forces are finally released to obtain an equilibrium configuration of the knot without external forces

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Section: Introductionmentioning

confidence: 99%

Contact-friction modeling within elastic beam assemblies: an application to knot tightening

Durville

2012

Comput Mech

121

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“…The exact derivation of the deformation of real fibre bundles is rather intricate. It is possible to apply, for example, the MULTIFIL code by Durville 29,30 for a particular composite structure. The fluid flow, however, generates a rather complex distribution of forces within the bundle.…”

Section: Elastic Deformations Of Fibres and Fibre Bundlesmentioning

confidence: 99%

Transversal flow-induced deformation of fibres during composites manufacturing and the effect on permeability

Lundström

Hellström

Frishfelds

2013

Journal of Reinforced Plastics and Composites

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Low Reynolds number flow of a viscous fluid through bundles in non-crimp stitched fabrics is considered for different arrangements of the fibres within the bundles. Using a previous derived model, two-dimensional Navier–Stokes solutions are sampled for the flow between a few fibres with a subsequent minimisation of the dissipation rate in the total system of fibres. Based on the detailed geometry of the fabrics flow induced elastic deformations of the fibre bundles are then derived and the overall permeability is computed for different pressure gradients. The permeability of random arrays of a large number of as well mono-dispersed as poly-dispersed fibres increases as the flow-induced deformation increases and despite the relative shift of the fibres is small the overall change in permeability is essential. For a system with gaps between bundles the change in permeability depends on the orientation of the flow field with respect to the geometry studied while for a regular packing the alteration in permeability is negligible.

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“…Mechanical simulation of 3D beams, rods and structures undergoing large deformations has a wide range of applications in modern product development and design processes. For complex applications, such as the simulation of yarns [1], woven and knitted textiles [2], fibrous materials [3], hair, cables [4], pipings or additively manufactured structures [5], the capability to simulate rod-to-rod contact is essential. In this paper, we present an isogeometric collocation method for contact simulation of geometrically nonlinear spatial rods, which exploits the advantages of isogeometric collocation methods, i.e.…”

Section: Introductionmentioning

confidence: 99%

An isogeometric collocation method for frictionless contact of Cosserat rods

Weeger

Narayanan

Lorenzis

et al. 2017

Computer Methods in Applied Mechanics and Engineering

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A frictionless contact formulation for spatial rods is developed within the framework of isogeometric collocation. The structural mechanics is described by the Cosserat theory of geometrically nonlinear spatial rods. The numerical discretization is based on an isogeometric collocation method, where the geometry and solution fields are represented as NURBS curves and the strong forms of the equilibrium equations are collocated at Greville points. In this framework, a frictionless rod-to-rod contact formulation is proposed. Contact points are detected by a coarse-level and a refined search for close centerline points and reaction forces are computed by the actual penetration of rod surface points, so that the enforcement of the contact constraints is performed with the penalty method. An important aspect is the application of contact penalty forces as point loads within the collocation scheme, and methods for this purpose are proposed and evaluated. The overall contact algorithm is validated by and applied to several numerical examples.

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Mechanical-Electrical Modeling of Stretching Experiment on 45 ${\rm Nb}_{3}{\rm Sn}$ Strands CICCs

Cited by 18 publications

References 8 publications

Contact-friction modeling within elastic beam assemblies: an application to knot tightening

Contact-friction modeling within elastic beam assemblies: an application to knot tightening

Transversal flow-induced deformation of fibres during composites manufacturing and the effect on permeability

An isogeometric collocation method for frictionless contact of Cosserat rods

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