TY - GEN
T1 - 3D Finite Element Modelling of Conductor-Clamp Assemblies Under Cyclic Bending
T2 - 3rd International Symposium on Dynamics and Aerodynamics of Cables, ISDAC 2023
AU - Lalonde, Sébastien
AU - Kared, Liticia
AU - Guilbault, Raynald
AU - Langlois, Sébastien
N1 - Publisher Copyright:
© 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2024
Y1 - 2024
N2 - Recent advances in numerical modelling now allow 3D analysis of complete conductor-clamp assemblies under multiaxial loading, while considering all wire interactions. In-depth studies simulating complex problems, such as wind-induced overhead conductor fatigue, are now possible. Providing detailed wire stresses and contact load distributions in the vicinity of suspension clamps, these models lead to refined conductor service life estimations. However, owing to its stranded configuration and multiple wire interactions, conductor kinematics is intricate and depends on material tribological properties. On the other hand, applications of conductor-clamp models commonly assume a uniform and constant adhesion coefficient of friction (μa). In reality, μa may vary over time with surface degradation. Therefore, numerical solutions that use a single μa value could provide incomplete information and thus, lead to inaccurate conclusions. Using an efficient and proven multilayered strand modelling strategy based on 3D beam-to-beam contacts, this study investigates the influence of the coefficient of friction (μa) on full conductor-clamp model solutions. Mapped distributions of wire stresses and local contact conditions are used to characterize the overall influence of the coefficient of friction on the model solution. Exploiting a factorial design approach, the analyses also highlight the cross-influence between the μa level and conductor axial tension and cyclic bending amplitude.
AB - Recent advances in numerical modelling now allow 3D analysis of complete conductor-clamp assemblies under multiaxial loading, while considering all wire interactions. In-depth studies simulating complex problems, such as wind-induced overhead conductor fatigue, are now possible. Providing detailed wire stresses and contact load distributions in the vicinity of suspension clamps, these models lead to refined conductor service life estimations. However, owing to its stranded configuration and multiple wire interactions, conductor kinematics is intricate and depends on material tribological properties. On the other hand, applications of conductor-clamp models commonly assume a uniform and constant adhesion coefficient of friction (μa). In reality, μa may vary over time with surface degradation. Therefore, numerical solutions that use a single μa value could provide incomplete information and thus, lead to inaccurate conclusions. Using an efficient and proven multilayered strand modelling strategy based on 3D beam-to-beam contacts, this study investigates the influence of the coefficient of friction (μa) on full conductor-clamp model solutions. Mapped distributions of wire stresses and local contact conditions are used to characterize the overall influence of the coefficient of friction on the model solution. Exploiting a factorial design approach, the analyses also highlight the cross-influence between the μa level and conductor axial tension and cyclic bending amplitude.
KW - 3D conductor-clamp modelling
KW - Coefficient of friction
KW - Inter-wire contact
KW - Overhead conductors
KW - Wind-induced cyclic bending
UR - https://www.scopus.com/pages/publications/85184281589
U2 - 10.1007/978-3-031-47152-0_27
DO - 10.1007/978-3-031-47152-0_27
M3 - Contribution to conference proceedings
AN - SCOPUS:85184281589
SN - 9783031471513
T3 - Lecture Notes in Civil Engineering
SP - 315
EP - 326
BT - Dynamics and Aerodynamics of Cables - ISDAC 2023
A2 - Gattulli, Vincenzo
A2 - Lepidi, Marco
A2 - Martinelli, Luca
PB - Springer Science and Business Media Deutschland GmbH
Y2 - 15 June 2023 through 17 June 2023
ER -