چکیده مقاله
Fatigue and pitting corrosion are two important design considerations for strength assessment of steel structures of the offshore oil and gas industry In this paper, SIFs along surface crack front calculated are validated by the previous work Secondly, a numerical approach is developed to computing the crack shape evolution in semielliptical surface cracks in corroded T joints Finally, fatigue life of this joint where pitting corrosion is located in direction of the crack face is examined A series of three dimensional circular cone pit models together with a semi elliptical surface crack in a tubular T joint are simulated in ANSYS SIFs along surface crack front calculated are validated by the previous work To validate the model, the results of an un corroded model are examined against the available results in the literature, and good agreements are observed According to the numerical results, pitting corrosion in direction of crack face on chord leads to reducing fatigue life of T joint when decreasing SIF along crack front
کلیدواژهها
نویسندگان
Amirhossein Kaviani
Department of maritime Engineering Amirkabir University of Technology Tehran, Iran
Ahmad Rahbar Ranji
Department of maritime Engineering Amirkabir University of Technology Tehran, Iran
Mehdi Iranmanesh
Department of maritime Engineering Amirkabir University of Technology Tehran, Iran
شیوه ارجاع
Kaviani, Amirhossein and Rahbar Ranji, Ahmad and Iranmanesh, Mehdi,1398,Study on fatigue growth of a surface crack in a corroded tubular T-joint,International Conference on Innovation and Research in Engineering Sciences
ارائهشده در
مجموعه مقالات سومین کنفرانس بین المللی نوآوری و تحقیق در علوم مهندسی30 تیر 1398