Abstract
Bonded flexible marine hoses are frequently used in offshore offloading operations. The proper performance of these hoses throughout the service life is important. Many studies have been developed considering the global dynamic behavior of such hoses; however, only a few considered its local structural behavior. The present work aims to better understand the local mechanics of these hoses by proposing both a numerical and an analytical model. The first approach is based on a finite element model, which is constituted of continuum and REBAR finite elements. The first type of elements aims to represent the elastomeric matrix, whereas the second is introduced in order to properly represent both the polymeric and the metallic reinforcements. The second approach is based on an adaptation of a well-known analytical model for the axisymmetric behavior of bonded and unbonded flexible pipes. The present paper analyzes a 20″ bonded flexible marine hose subjected to different axisymmetric loads. The stiffness of the hose and the stresses and strains in each of its components are computed using both models and compared to reference values found in the literature. In a general manner, the results agree well, thus indicating that both models are promising tools for the design of these structures.
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