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A new burst pressure model for thin-walled pipe elbows containing metal-loss corrosion defects
Highlights Propose a modified Goodall model for intact pipe elbows. Propose a new burst pressure evaluation model for corroded elbows. Extensive parametric finite element analyses are carried out for model validation. Investigate the accuracy of twice elastic slope (TES) and ultimate tensile strength (UTS) criteria in FEA.
Abstract In this paper, a new burst pressure model for thin-walled pipe elbows containing metal-loss corrosion defects is developed based on a modified Goodall model for the burst pressure of intact elbows and the DNV model for the burst pressure of corroded straight pipes. The proposed model is validated using extensive parametric finite element analyses (FEA) and shown to be more accurate than two existing burst pressure models for corroded elbows reported in the literature. The accuracy of two well-known failure criteria used in FEA, i.e. the twice elastic slope (TES) and ultimate tensile strength (UTS) criteria are investigated. The UTS criterion is found to be more accurate than the TES criterion in determining the burst pressure of pipe elbows in FEA.
A new burst pressure model for thin-walled pipe elbows containing metal-loss corrosion defects
Highlights Propose a modified Goodall model for intact pipe elbows. Propose a new burst pressure evaluation model for corroded elbows. Extensive parametric finite element analyses are carried out for model validation. Investigate the accuracy of twice elastic slope (TES) and ultimate tensile strength (UTS) criteria in FEA.
Abstract In this paper, a new burst pressure model for thin-walled pipe elbows containing metal-loss corrosion defects is developed based on a modified Goodall model for the burst pressure of intact elbows and the DNV model for the burst pressure of corroded straight pipes. The proposed model is validated using extensive parametric finite element analyses (FEA) and shown to be more accurate than two existing burst pressure models for corroded elbows reported in the literature. The accuracy of two well-known failure criteria used in FEA, i.e. the twice elastic slope (TES) and ultimate tensile strength (UTS) criteria are investigated. The UTS criterion is found to be more accurate than the TES criterion in determining the burst pressure of pipe elbows in FEA.
A new burst pressure model for thin-walled pipe elbows containing metal-loss corrosion defects
Wang, Qingguo (author) / Zhou, Wenxing (author)
Engineering Structures ; 200
2019-09-26
Article (Journal)
Electronic Resource
English
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