Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL MODELLING OF HELICAL CABLES USING BEAM-BASED METAELEMENTS
Submission Author:
Eduardo Menezes , RS , Brazil
Co-Authors:
Eduardo Menezes, Sandro Amico, Rogério Marczak
Presenter: Eduardo Menezes
doi://10.26678/ABCM.COBEM2019.COB2019-0436
Abstract
Cables and wire ropes are structural components designed for high axial stresses and relatively low torsion and flexure stress, where its high flexibility under bending conditions is achieved through the helical construction of the wires surrounding the cable core. Common applications include cable-stayed bridges, mooring lines in offshore structures, cranes, mine hoisting, lifts, among others. In comparison with steel cables, composite cables show low degradation in harsh environments, outstanding fatigue life, and higher specific Young’s modulus and strength due to its lightweight. These features have increased composite cables applications, allowing offshore platforms to be installed in deeper waters and increasing cable-stayed bridges span. In view of the complex geometry of helical cables, analytical models for predicting their mechanical behavior include many assumptions and simplifications. Although numerical models could reproduce their behavior with good accuracy, they are able to simulate a limited length, which may restrict their applications in many practical cases. In order to avoid this problem, the finite element method was applied, where a new beam element was designed aiming to incorporate the features of a cable modeled through solid elements. The designed element was able to combine both numerical models’ accuracy and practical implementation of analytical models.
Keywords
Finite Element Method, beam element, Hellical cable
