Affiliation:
1. Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, No. 1, Lisboa 1049-001, Portugal
Abstract
Abstract
This paper assesses the uncertainty in the collapse strength of sandwich pipelines (SPs) under external pressure predicted by various strength models in three categories based on interlayer adhesion conditions. First, the validity of the strength models is verified by comparing their predictions with sandwich pipeline collapse test data and the corresponding model uncertainty factors are derived. Then, a parametric analysis of deterministic collapse strength predictions by models is conducted, illustrating insights of models’ behavior for a wide range of design configurations. Furthermore, the uncertainty among different model predictions is perceived at different configurations of outer and inner pipes and core thicknesses. A case study of a realistic sandwich pipeline is developed, and probabilistic models are defined to basic design parameters. Uncertainty propagation of models’ predictions is assessed by the Monte Carlo simulation method. Finally, the strength model predictions of sandwich pipelines are compared with that of an equivalent single-walled pipe.
Funder
Fundação para a Ciência e a Tecnologia
Subject
Mechanical Engineering,Ocean Engineering
Cited by
3 articles.
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