Research on high quality mesh method of armored umbilical cable for deep sea equipment. (1st February 2021)

• Record Type: Journal Article
• Authors: Xie, Kun; Jin, Yongping; Peng, Youduo; Liu, Guangping; Wan, Buyan
• Is Part Of: Ocean engineering. Volume 221(2021)
• Publication Date: 2021-02-01
• Subjects: Deep sea equipment -- Armored umbilical cable -- Three-dimensional geometric model -- Mesh method -- Finite element analysis; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2020.108550
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: Most of the references are automatic mesh generation, but the accuracy of armored umbilical cable (AUC) analysis is not high enough. There is no detailed introduction about high-quality mesh generation method. Therefore, a high quality mesh method (hexahedral mesh generation method) for AUC for deep sea equipment is proposed in this paper. Hexahedral mesh generation method is often used in the analysis of structures subjected to bending or torsion and structures with large deformation. The analysis of AUC is exactly the analysis of bending or torsional structures and large deformation structures. The model is divided into five types for end face member: a circular, a circular ring, a fan-shaped, a side with a curved triangular and a curved square side. In addition, different hexahedral mesh methods for five different cross-section types, get a high quality hexahedral mesh of each part and assemble it by combination, forming a high quality AUC three-dimensional hexahedral mesh model. At last, finite element analysis is carried out to determine the accuracy of the hexahedral mesh model. The results show: hexahedral mesh can improve analysis accuracy more than automatically generated mesh. This will provide technical support for the design, reliability analysis of the AUC. Highlights: A three-dimensional model of the armored umbilical cable (AUC) was established. A new high quality mesh method for AUC was proposed. High quality AUC three-dimensional hexahedral mesh model was generated according to this new method. Compare the analysis result of this new method with the automatically generated mesh method. This new method can greatly improve the analysis accuracy of AUC.