Automatic contact detection between rope fibers. (1st July 2019)

• Record Type: Journal Article
• Authors: Peng, Lei; Feng, Zhi-Qiang; Joli, Pierre; Liu, Jian-hua; Zhou, Yang-jing
• Is Part Of: Computers & structures. Volume 218(2019)
• Page Start: 82
• Page End: 93
• Publication Date: 2019-07-01
• Subjects: Rope fibers -- Multi-body system -- Unilateral contact -- Contact detection -- Bi-potential method; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2019.03.010
• Languages: English
• ISSNs: 0045-7949

Abstract

Highlights: A new contact searching algorithm is developed to accelerate the contact queries. Frictional contact problem is solved by the bi-potential method in a reduced system. Assembled rope fibers considering large deformation are analyzed by the FEM. Abstract: Understanding and modeling contact behavior of rope-like structures imposed by pure torsion represents a very difficult topic among the non-smooth mechanical problems. Apart from the high non-linearities on the boundary conditions, the location of real contact areas between inter fibers becomes a prerequisite difficulty. In this paper, a new three-stages contact searching algorithm based on bounding volume hierarchies and orthogonal projections is developed for fiber contact problems involving large deformation. In particular, an improved axis aligned bounding boxes hierarchy based on the specific geometry component is proposed, which can directly result in vertex-element pairs. The frictional contact forces are solved in a reduced system within the bi-potential framework. The algorithms are implemented into the in-house finite element software FER/Impact and some numerical examples are carried out to illustrate the proposed methods.