A finite element model for simple straight wire rope strands

Nawrocki, Anne; Labrosse, Michel R.

doi:10.1016/s0045-7949(00)00026-2

Cited by 121 publications

(58 citation statements)

References 14 publications

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“…Each wire section is meshed using 12 quadratic solid FE similarly to the wire spring. As mentioned in previous works [15,17], the overall elastic axial behavior of such rope appears to be not sensitive to inter-wire contact conditions (rolling and sliding) between the strands and the central core. Therefore, the nodes situated on the external surface of the core have been merged to those of the strands using common nodes [8].…”

Section: "6 + 1" Stranded Cablementioning

confidence: 52%

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Homogenization of helical beam-like structures: application to single-walled carbon nanotubes

Messager

Cartraud

2007

Comput Mech

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International audienceThis work is devoted to the computation of axial stiffness of helical beam-like structures. Starting from the homogenization theory of periodic slender domains and taking benefit of the property of helical symmetry, the overall elastic behavior can be obtained from the solution of three-dimensional problems posed on a reduced basic cell. The mechanical analysis of this reduced basic cell performed using a concise FE model allows therefore to compute easily the anisotropic beam homogenized stiffness coefficients. The accuracy and usefulness of this approach is demonstrated by comparisons with reference solutions and large FE model results for two numerical volume structure examples: a wire spring and a stranded “6 + 1” rope. The homogenization procedure is then applied to single-walled carbon nanotubes and it is shown from the two helical symmetries that their basic cell can be reduced to three beam elements

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Section: "6 + 1" Stranded Cablementioning

confidence: 52%

“…Stranded ropes are commonly used for many engineering applications such as bridges, mooring lines or pre-stressed structures [6,8,15,17]. These beam-like structures are mainly constituted of wires wrapped together or around a central straight core, thus exhibiting helical symmetry.…”

Section: "6 + 1" Stranded Cablementioning

confidence: 99%

Homogenization of helical beam-like structures: application to single-walled carbon nanotubes

Messager

Cartraud

2007

Comput Mech

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“…In this respect, however, Utting and Jones (Utting and Jones, 1987), by focusing their attention on inter-wire friction of a strand in the case of small deformations, showed experimental results which demonstrated a small influence of such effects on the global strand behaviour. Also, Nawrocki and Labrosse (Nawrocki and Labrosse, 2000) performed studies on inter-wire contacts, by using Finite Element numerical models, highlighting that rolling and sliding might influence the overall mechanical response of strands through pivoting 4 between wires of adjacent layers. Nevertheless, comparisons of the results of numerical analyses and experimental data seems to suggest that pivoting is a stress-free phenomenon, at least for small and moderately large deformations, thus allowing to neglect these local effects and to simply relate wire kinematics to the overall degrees of freedom of the strand.…”

Section: Mechanics Of the Wires And Overall Strand Responsementioning

confidence: 99%

A hybrid deterministic-probabilistic approach to model the mechanical response of helically arranged hierarchical strands

Fraldi

Perrella²,

Ciervo

et al. 2017

Journal of the Mechanics and Physics of Solids

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This is the author's final version of the contribution published as:[M. Fraldi, G. Perrella, M. Ciervo, F. Bosia, N.M. Pugno, A hybrid deterministicprobabilistic approach to model the mechanical response of helically arranged hierarchical strands, Journal of the Mechanics AbstractVery recently, a Weibull-based probabilistic strategy has been successfully applied to bundles of wires to determine their overall stress-strain behaviour, also capturing previously unpredicted nonlinear and post-elastic features of hierarchical strands. This approach is based on the so-called "Equal Load Sharing (ELS)" hypothesis by virtue of which, when a wire breaks, the load acting on the strand is homogeneously redistributed among the surviving wires. Despite the overall effectiveness of the method, some discrepancies between theoretical predictions and in silico Finite Element-based simulations or experimental findings might arise when more complex bundle structures are analysed, e.g. helically arranged bundles. To overcome these limitations, an enhanced hybrid approach is proposed in which the probability of rupture is combined with a deterministic mechanical model of a strand constituted by helically-arranged and hierarchically-organized wires. The results show that generalized stress-strain responses -incorporating tensile/torsion couplingare naturally found and, once one or more elements break, the competition between geometry and mechanics of the strand microstructure, i.e. the different cross sections and helical angles of the wires belonging to the different hierarchical levels of the strand, determines the no longer homogeneous stress redistribution among the surviving wires whose fate is hence governed by an "Unequal Load Sharing" criterion.

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“…Although is a very powerful tool this approach demands time and must be carefully employed. Stanova et al (2011), Nawrocki and Labrosse (2000), and Jiang (1999) are examples of works where this analysis was carried out using finite elements.…”

Section: Introductionmentioning

confidence: 99%