Parametric analysis of an offloading hose under internal pressure via computational modeling

Tonatto, Maikson Luiz Passaia; Tita, Volnei; Araujo, Ricardo Teles; Forte, Maria M.C.; Amico, Sandro Campos

doi:10.1016/j.marstruc.2016.10.008

Cited by 24 publications

(16 citation statements)

References 21 publications

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“…The cord-rubber-laminated layer and the stiffener are dominant structural components in bearing internal pressure load. As concluded in Tonatto et al., 10 the reduction of spiral stiffeners into ring stiffeners has little effect on the hose’s structural response, so the spiral stiffener is simplified as ring stiffeners in the present study. Figure 5 sketches the effect of ring stiffeners on the hose segment.…”

Section: Mathematical Modelingmentioning

confidence: 69%

See 1 more Smart Citation

Analytical modeling for offshore composite rubber hose with spiral stiffeners under internal pressure

Gao

et al. 2020

Journal of Reinforced Plastics and Composites

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Internal pressure is the most important functional load for the offshore composite rubber hose. In this paper, the stress and radial displacement of the hose under internal pressure are investigated. The hose dimensions are length of 10.7 m and nominal bore diameter of 500 mm. The composite structure is mainly composed of cord-rubber reinforcement layers and a spiral steel stiffener. To calculate the stress and deformation of the hose, the stiffener and composite cord-rubber layers are theoretically analyzed based on the Euler–Bernoulli beam theory and the Donnell shell theory, respectively. The stiffener distinguishes the hose from common filament wound un-stiffened composite pipes in regard to the stress distribution and radial deformation. It is found that the stiffener plays an important role in affecting the mechanical behavior of composite reinforcement. Influences of the cord-winding angle, the stiffener spacing, and the stiffener’s tensile stiffness on the axial, hoop and shear stresses, and the radial displacement are investigated. The analytical model shows a good agreement with the finite element model. It is supposed to be of significant reference for practical engineering.

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Section: Mathematical Modelingmentioning

confidence: 69%

“…But contribution of the rubber matrix was not considered in the model. Tonatto et al 10 used two-dimensional finite-element models to simulate the mechanical behavior of a double-carcass offloading hose. And it was compared with a burst pressure test and agreed well.…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling for offshore composite rubber hose with spiral stiffeners under internal pressure

Gao

et al. 2020

Journal of Reinforced Plastics and Composites

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“…However, due to the need for sustainable materials, increased research has been reported on hoses with materials like composites [12][13][14]. Some advances have been made in using composites as reinforcements on marine hoses [15][16][17][18][19]. Other advances related to the tubular hoses are composite marine risers, which have also notably progressed [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Numerical Assessment on the Dynamic Behaviour of Submarine Hoses Attached to CALM Buoy Configured as Lazy-S under Water Waves

Amaechi

Wang

2021

JMSE

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Recent design challenges in ocean observations, energy storage, offloading/discharging, and loading operations in both the offshore-renewable industry have led to advances in the application of catenary anchor leg moorings (CALM) buoys. Due to different seabed profiles, soil stiffness and environmental conditions, there is the need for numerical assessment to investigate the behaviour of the submarine hoses, based on the structural and hydrodynamic behaviour. In this study, experimental and numerical investigations are carried out on the dynamic behaviour of the submarine hoses attached to a CALM buoy in Lazy-S configuration. Six mooring lines are attached to the CALM buoy with a water depth of 100 m in the numerical model. A hydrodynamic model utilising ANSYS AQWA was developed then coupled unto the dynamic model in Orcina’s Orcaflex. The studies were carried out to study the effect of flow angles, wave height, soil stiffness and hydrodynamic loads on the structural behaviour of the submarine hoses. Waves at different angles to the submarine hose affected the effective tension more where the hose bends due to the floats attached. Parametric studies were carried out on both linear and nonlinear seabed models, and recommendations were made from the investigations on the submarine hose models.

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“…In the actual work process, it is often affected by high and low temperature changes outside. Due to the harsh construction environment, they will be subject to great hydraulic impact, it is very likely that there will be hydraulic oil leakage, buckle tripping, hose bursts and other situations, which will cause great security risks and endanger the safety of people and machines [3][4][5]. In order to solve these problems, it is necessary to carry out pressure tests on the hose assemblies to ensure their quality, so providing high pressure for the hydraulic hose has become the key technology of this problem [6,7].…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Verification of Pressurized Cylinders in Hydraulic Rubber Hose Pressure Washers

et al. 2021

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Hydraulic rubber hoses are subject to great hydraulic impact during the actual working process, which causes a great potential safety hazard. Therefore, it is necessary to carry out pressure tests on hose assemblies to ensure its quality, so providing a high pressure for the hydraulic hose has become the key technology of this problem. Aiming at solving the problem of detection of pressure resistance in hydraulic rubber hose cleaning machines, this paper analyzed the pressurization mechanism of the hydraulic pressurized cylinder and proposed a method of continuous pressurization. This paper also theoretically analyzed the pressure expansion of the rubber hose, and the conclusion is that for the maximum hose capacity (hose size is Φ25 mm × 6 m), the volume of water required to provide water in the hose from 10 MPa to 100 MPa is 0.59 L. The pressurized cylinder was designed and checked theoretically and analyzed by the finite element method. It is concluded that the maximum stress of the pressurized cylinder is concentrated at the bottom of the high-pressure chamber, and the outlet hole at the bottom of the cylinder barrel of the high-pressure chamber is the weakest part of the pressurized cylinder. The performance of the supercharging cylinder is verified by experiments, which proves the feasibility, rapidity and stability of the supercharging cylinder.

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Parametric analysis of an offloading hose under internal pressure via computational modeling

Cited by 24 publications

References 21 publications

Analytical modeling for offshore composite rubber hose with spiral stiffeners under internal pressure

Analytical modeling for offshore composite rubber hose with spiral stiffeners under internal pressure

Numerical Assessment on the Dynamic Behaviour of Submarine Hoses Attached to CALM Buoy Configured as Lazy-S under Water Waves

Design and Experimental Verification of Pressurized Cylinders in Hydraulic Rubber Hose Pressure Washers

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