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- W4312848093 abstract "Abstract In this paper, an engineering analysis approach is presented to predict fracture arrest CTOA requirements for gas pipelines using finite element (FE) analysis. A model with constant CTOA as fracture criterion was developed using the commercial FE code ABAQUS 2017x-explicit. Dynamic pipe fracture simulations were performed to determine fracture resistance curves (crack velocity as a function of pressure at constant CTOA) for an American Petroleum Institute (API) X80 steel pipe of diameter 914 mm to 1422 mm and thickness 13 mm to 26 mm. The model incorporated a user subroutine and shell elements. Backfill effects were modelled using smooth particle hydrodynamics and the flap pressure profile was modelled using experimental data from previous burst tests. Fracture resistance curves were compared with the gas decompression curve to determine the minimum arrest CTOA (point of tangency) for a given pipeline design (material, geometry, and gas). Results (arrest CTOA) of the given steel grade and design parameters (thickness, diameter, and backfill) are presented and compared with two previous arrest models that use the CTOA as fracture toughness parameter." @default.
- W4312848093 created "2023-01-05" @default.
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- W4312848093 date "2022-09-26" @default.
- W4312848093 modified "2023-09-26" @default.
- W4312848093 title "Development of CTOA Requirements for Ductile Fracture Arrest in Gas Pipelines: FE Model and Simulations" @default.
- W4312848093 doi "https://doi.org/10.1115/ipc2022-87157" @default.
- W4312848093 hasPublicationYear "2022" @default.
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