Overhead Electrical Conductor in bending: Papailiou's model revisited

 In a paper to appear and available online,( An analytical approach to model the hysteretic bending behavior of spiral strands, Applied Mathematical Modeling 2016, http://www.sciencedirect.com/science/article/pii/S0307904X16300592 )

Foti and Martinelli present a seemingly more rigorous of the helical strand bending problem. Numerical applications are mostly restricted to the single layer case. Results obtained in a multilayer example are rather close to Papailiou’s. An intriguing result is a small variation in the axial load arising from the imposed uniform curvature bending. Claims relating to fretting fatigue prediction are overly optimistic, as shown by  Levesque et al. experimental data.