Avaliação de modelos de energia para simulação numérica do comportamento mecânico de multifilamentos de poliéster

Daniel Magalhães da Cruz; Tales Luiz Popiolek Júnior; Marcelo de Ávila Barreto; Carlos Eduardo Marcos Guilherme; Felipe Tempel Stumpf

doi:10.18540/jcecvl9iss1pp15321-01e

Authors

Daniel Magalhães da Cruz Universidade Federal do Rio Grande do Sul (UFRGS), Brazil https://orcid.org/0000-0001-8734-0371
Tales Luiz Popiolek Júnior Universidade Federal do Rio Grande (FURG), Brazil https://orcid.org/0000-0001-6733-3772
Marcelo de Ávila Barreto Universidade Federal do Rio Grande (FURG), Brazil
Carlos Eduardo Marcos Guilherme Universidade Federal do Rio Grande (FURG), Brazil
Felipe Tempel Stumpf Universidade Federal do Rio Grande do Sul (UFRGS), Brazil https://orcid.org/0000-0002-8767-9516

DOI:

https://doi.org/10.18540/jcecvl9iss1pp15321-01e

Keywords:

Offshore mooring, Mechanical characterization, Numerical simulation, Strain energy models, Polyester multifilaments

Abstract

Mooring systems made of synthetic fiber ropes, in particular polyester ones, have gained prominence in recent decades. However, the mechanical behavior of such fibers has its complexities for simulation due to viscoelasticity and material and geometric nonlinearities. Numerical simulations of the mechanical behavior of the material used in the anchoring system are performed based on the viscoelastic theory and, for that, experimental data are used to calibrate the model. The viscoelastic mathematical approach of numerical simulation depends on the strain energy function which, for multifilaments of polymeric materials, has characteristics such as viscoelasticity and incompressibility. The objective of this study is to study different strain energy models applied to the numerical simulation of polyester, a material used in offshore anchorages. As a result, a quantitative comparison is obtained between the models regarding the quality of the mathematical adjustments.