Dimensionless groups governing response of steel catenary risers

Sensitivity studies of SCR fatigue damage in the touchdown zone using an efficient simplified framework for stress range evaluation

“…A programme of research (Quéau, 2014;Quéau et al, 2011Quéau et al, , 2013Quéau et al, , 2014aQuéau et al, , 2014b has been undertaken by the authors with the ultimate aim of proposing a simplified fatigue analysis and design framework for SCRs in the TDZ. The original intention was to use the dynamic amplification factor (DAF) approach for dynamic response of SCRs, since it is used widely for simplification of structural dynamic analyses for linear structural systems (e.g.…”

“…As a pre-requisite to the sensitivity studies, dimensional analysis was carried out for SCR systems under harmonic motions to identify the dimensionless groups of input parameters influencing the stress range, and consequently the DAF (Quéau et al, 2013). A summary of the various dimensionless groups is given in Fig.…”

“…A summary of the various dimensionless groups is given in Fig. 2, using the dimensionless groups notation introduced in Quéau et al (2013). The validity of the dimensionless groups was tested through numerical analyses and demonstrating that, under the simplifying assumptions adopted in the study, the maximum stress ranges occurring respectively under dynamic motions (accounting for hydrodynamic and inertia effects as longitudinal and transverse waves travel along the riser) and static motions (no inertia or damping effects) could be expressed as follows: …”

A nonlinear mechanical model for deepwater steel lazy-wave riser transfer process during installation

“…A lot of workers have conducted extensive studies on the SCR including static response, dynamic behavior, pipe-soil interaction and the installation analyses [4][5][6][7][8][9][10][11][12][13]. The installation of the pipeline makes influence of the riser's service life and is an important research direction.…”

Compressão dinâmica em risers

“…Para as deduções dessas relações, uma boa referência é o Capítulo 1 de (Bertram, 2012). Um trabalho interessante sobre grupos adimenionais que regem as respostas dinâmicas de risers SCR é (Quéau et al, 2013). O uso de adimensionais para determinação das características de um modelo de riser para ensaios em tanques de provas é muito bem descrito e encaminhado em (Rateiro et al, 2012).…”