Bending

Taut helical strand bending stiffness

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Alain Cardou
Among other mechanical properties, an important feature for a cable-like system of wires (a helical strand) is its low bending stiffness. However, in many situations that stiffness has to be taken into account. This paper provides a review of various mechanical models for circular section wire strands which can be found in the literature. Each one of them yields a more or less accurate evaluation of that quantity in terms of the system parameters. As each model has to be based on a set of simplifying assumptions, a classification is proposed. Being a complement as well as an update to a previous paper (Cardou and Jolicoeur, 1997), several relevant references already discussed in that paper, have not been included in this review.