TY - JOUR
T1 - Bending study of submarine power cables based on a repeated unit cell model
AU - Fang, Pan
AU - Li, Xiao
AU - Jiang, Xiaoli
AU - Hopman, Hans
AU - Bai, Yong
PY - 2023
Y1 - 2023
N2 - Predicting the bending behaviours of a submarine power cable (SPC) is always a tough task due to its complex geometry and inner layer contact, not to mention the stick–slip mechanism. A full-scale finite element model is cumbersome during the early design stage and a more efficient model for practical use is required. Therefore, in this paper, a repeated unit cell (RUC) technique-based FE model is developed, which simplifies the bending analysis of SPCs using a short-length representative cell with periodic conditions. The verification of this RUC model is conducted from cable and component levels, respectively. The cable overall response is validated by the curvature-moment relationships from our cable bending tests regarding four cable samples whose material properties are obtained through a set of material tests. As for the component level, the behaviours of particular components are studied and compared with the results from a full-scale numerical model. Discrepancy is observed between the RUC model and the test, which can be explained by the distinctions of boundary conditions between these two methods. The proposed Cable-RUC model has been found robust and computationally efficient for studying SPCs under bending.
AB - Predicting the bending behaviours of a submarine power cable (SPC) is always a tough task due to its complex geometry and inner layer contact, not to mention the stick–slip mechanism. A full-scale finite element model is cumbersome during the early design stage and a more efficient model for practical use is required. Therefore, in this paper, a repeated unit cell (RUC) technique-based FE model is developed, which simplifies the bending analysis of SPCs using a short-length representative cell with periodic conditions. The verification of this RUC model is conducted from cable and component levels, respectively. The cable overall response is validated by the curvature-moment relationships from our cable bending tests regarding four cable samples whose material properties are obtained through a set of material tests. As for the component level, the behaviours of particular components are studied and compared with the results from a full-scale numerical model. Discrepancy is observed between the RUC model and the test, which can be explained by the distinctions of boundary conditions between these two methods. The proposed Cable-RUC model has been found robust and computationally efficient for studying SPCs under bending.
KW - Bending behaviour
KW - FEM
KW - Multi-point constraint
KW - Repeated unite cell
KW - Submarine power cable
UR - http://www.scopus.com/inward/record.url?scp=85165970534&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2023.116606
DO - 10.1016/j.engstruct.2023.116606
M3 - Article
AN - SCOPUS:85165970534
SN - 0141-0296
VL - 293
JO - Engineering Structures
JF - Engineering Structures
M1 - 116606
ER -