DOOLINES : an object-oriented framework for non-linear static and dynamic analyses of offshore lines

Abstract

We present an object-oriented framework, named DOOLINES, for non-linear static and dynamic analyses of slender marine structures which often appear in offshore structures employed in the petroleum and gas industries as, among others, flexible risers, steel catenary risers, umbilicals, floating hoses, and mooring lines. DOOLINES allows the rapid development of tailored, modular, reusable and extensible large-size systems, being itself extensible. These properties, along with the ease of use of our framework, are assessed by means of case studies. Code examples are provided.

Nonlinear multiphysics finite element code architecture in object oriented Fortran environment

“…Only welldefined interfaces are provided after the encapsulation. Various designs of class hierarchies in FEA were introduced in [6, [28][29][30][31]. This section focusses on FOOF architecture, which is a free 1 nonlinear multiphysics finite element code in object oriented Fortran environment.…”

An adaptive time integration strategy based on displacement history curvature

“…Studying the dynamics of such structures is the objective of software like Dynasim [20], which employs a software component called DOOLINES [21], an object oriented framework, developed in the C++ language, responsible for the dynamic analysis of mooring lines and risers. This framework uses the Finite Element Method to make a spatial discretization of the lines, and Direct Integration Methods to solve the dynamics of the problem.…”

Estudo analítico-numérico das vibrações induzidas por vórtices em trecho vertical de riser rígido, sujeito à variação de tração, e sua influência na fadiga.

“…Com o intuito de verificar a consistência do modelo fenomenológico adaptado de Furnes e Sorensen (2007), acoplado ao modelo estrutural baseado no algoritmo Doolines apresentado por Silveira, et al (2009), foram realizadas simulações para um riser flexível com ambas as extremidades articuladas. A metodologia de verificação baseou-se na comparação dos resultados do modelo desenvolvido com o experimento realizado por Chaplin et al (2005aChaplin et al ( , 2005b concomitantemente com a análise numérica via OrcaFlex 5 .…”