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Keywords: fracture
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-623
... ABSTRACT This article employs a mesh-free method known as peridynamics to conduct fracture simulation on pre-cracked stiffened plates. The fundamental theory and numerical simulation approach of bond-based peridynamics is introduced. The crack propagation path of a plate with hole is presented...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-620
... steels are the candidate materials because of their resistance to brittle fracture. According to Fujii (2004), these steels exhibit adequate cryogenic toughness; however, their yield stress at room temperature typically is approximately 200 MPa. The application of austenitic stainless steel...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-077
... ABSTRACT Natural gas hydrates are one important kind of clean energies, and the technology of hydraulic fracturing has been adopted to increase gas production. Therefore, according to the geological background of the reservoir in the Shenhu area, South China Sea, this paper used numerical...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-076
... cement chemistry cement property leak thixotropic cement slurry slurry cement slurry thixotropy casing and cementing cement formulation agent strength drilling fluids and materials evaluation thixotropic agent cotton fiber fracture selection operation experiment leakage...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-434
... Specimen w he (mm) (mm) S-75-70-C 75 70 Nut (kN) 117.3 ut (mm) 12.0 Ki (kN/mm) 37.2 Failure modea F S-50-70-C 50 70 115.0 11.4 27.1 F D-75-70-C 75 70 109.9 6.8 28.4 CT D-50-70-C 50 70 121.9 11.2 27.1 F H-75-H 75 N/A 38.3 27.2 1.7 T H-50-H 50 36.7 22.5 1.9 T a: F = bolt fracture; T = tube bearing failure...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-443
... fracturing reservoir geomechanics strength h2s management oilfield chemistry stainless steel corrosion inhibition carbon steel geologist production chemistry geological subdiscipline standardisation steel acc european committee microstructure beuth verlag gmbh fracture international...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-492
... this goal. However, many aspects still need to be clarified for the fracture resistance of the inner tank, which is the key to the safe storage of liquefied hydrogen. In this article, the author briefly introduces a Japanese governmental research project. INTRODUCTION Various energy carrier systems have...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-486
... ABSTRACT Control of ductile fracture propagation to ensure arrest is critical to design of pipelines transporting dense-phase CO 2 . Two factors that control crack arrest are fracture resistance and decompression pressure from the escaping fluid. Current engineering methodologies treat...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-414
... ABSTRACT Predicting crack initiation and its growth in marine concrete is still a major challenge. In present work, the fidelity of the peridynamics (PD) theory in predicting marine concrete fracture is investigated through a comparative study. PD predictions for fracture propagation paths...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-106
... ABSTRACT The fractures in Permian stratum of Shunbei oil and gas field are well developed, the formation fracture pressure is low, and the leakage problem is very severe during the cementing jobs. It is difficult to solve this problem by using traditional low-density cement slurry and staged...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1188
... Abstract Fracture ballooning frequently occurs in deep water drilling and is often confused with a well kick, which may lead to costly well control procedures. Although it has been studied for almost 30 years, less effort has been made with respect to deep water wells. Specifically...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1230
... and fractured mooring lines. The freak wave is regenerated by an improved phase modulation approach. According to the numerical simulation results, the dynamic performance of the FOWT, including the oscillations and drift motions of buoy, aerodynamic loads on rotor and mooring tensions are discussed among...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1122
... ABSTRACT Unconventional hydrocarbon reservoirs are deposits that do not produce economically without the assistance of massive stimulation or the application of special recovery technologies. Hydraulic fracturing is a stimulation technique that aims to increase the well productivity...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1243
... a wave driven glacial ice feature with a semi-submersible structure; the decision-making support by ice load calculations on a shipwreck in the Arctic; and various Arctic vessel navigation simulations. The technical advancement in terms of multi-body dynamics, ice fracture mechanics and hydrodynamics...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1230
... of ice floes and the maximum stress in the ice depends on floe size. The ultimate wave height of ice fracture against the ratio of floe length to wavelength is given. The limit wave height of the ice fracture decreases sharply with the length ratio when the floe length is small, and then keeps unchanged...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-121
... by particles, it has consistency between fluid and structure computations. Therefore the MPS is suitable for simulations of violent FSI problems involving fracture of structure. In the paper, as the initial step of the study, we develop the fluid and structure solvers for the purpose of applying it for ice...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-529
... ABSTRACT Hydrogen uptake into steels used in corrosive or hydrogen-containing environment may cause degradation of material property leading to premature fracture under load bearing condition. Hydrogen embrittlement effect can appear in many forms of fracture behavior of steels including...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-591
... with the voids due to the fracture of β phase ahead of the crack tip at low applied strain levels. In addition, hydrogen concentration in the ligament between the SCC-induced crack tip and voids accelerates the propagation of the crack, indicating that hydrogen concentration and partitioning among various trap...

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