Analytical modeling and approaches of multihelix cables incorporating with interwire mutual contacts

作     者：Zhichao ZHANG Xingzhe WANG 

作者机构：Key Laboratory of Mechanics on Disaster and Environment in Western China The Ministry of Education of China College of Civil Engineering and Mechanics Key Laboratory of Special Function Materials and Structure Design of Ministry of EducationLanzhou University College of Civil Science and Engineering Yangzhou University 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学(英文))

年 卷 期：2024年第45卷第9期

页      面：1633-1654页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project supported by the National Natural Science Foundation of China (Nos. 11932008 and 12102380) the Natural Science Foundation of Jiangsu Province of China (No. BK20180894) 

主　　题：35E05 effective stiffness hierarchical multihelix cable mechanical response mutual contact effect O343 

摘      要：This study aims to develop an analytical model based on the curve beam theory to capture the mechanical response of a multihelix cable considering the internal contact displacements. Accordingly, a double-helix cable subjected to axial tension and torsion is analyzed, and both the line and point contacts between the neighboring wires and strands are considered via an equivalent homogenized approach. Then, the proposed theoretical model is extended to a hierarchical multihelix cable with mutual contact displacements by constructing a recursive relationship between the high-and low-level multihelix structures. The global tensile stiffness and torsional stiffness of the double-helix cable are successfully evaluated. The results are validated by a finite element(FE) model, and are found to be consistent with the findings of previous *** is shown that the contact deformations in multihelix cables significantly affect their equivalent mechanical stiffness, and the contact displacements are remarkably enhanced as the helix angles increase. This study provides insights into the interwire/interstrand mutual contact effects on global and local responses.