NUMERICAL MODELING OF CORROSION EFFECTS ON ULTIMATE STRENGTH OF DX TUBULAR JOINTS

Authors

  • MAJID RASHIDI AMIRKABIR UNIVERSITY OF TECHNOLOGY
  • MASOUD NAZARI AMIRKABIR UNIVERSITY OF TECHNOLOGY
  • MOHAMMAD REZA KHEDMATI AMIRKABIR UNIVERSITY OF TECHNOLOGY
  • AKBAR ESFANDIARI AMIRKABIR UNIVERSITY OF TECHNOLOGY

Keywords:

MULTI-PLANAR TUBULAR JOINTS, DX JOINTS, CORROSION, FINITE ELEMENT METHOD (FEM), ULTIMATE STRENGTH, JACKET PLATFORM.

Abstract

THIS ARTICLE PRESENTS THE RESULTS OF NUMERICAL INVESTIGATION ON MODELING BUCKLING BEHAVIOR AND ULTIMATE STRENGTH OF CORRODED MULTI-PLANAR TUBULAR JOINTS. FINITE ELEMENT METHOD WAS USED IN ORDER TO SIMULATE THE BEHAVIOR OF DX MULTI-PLANAR TUBULAR JOINTS UNDER AXIAL COMPRESSIVE LOADING. THREE DIFFERENT PATTERNS WERE CHOSEN FOR CORROSION MODELING AND EFFECTS OF CORROSION-RELATED PARAMETERS SUCH AS AGE AND DEPTH OF CORROSION WERE EVALUATED. THE RESULTS INDICATE DIFFERENCES IN THE ULTIMATE STRENGTH CONCLUDED FROM DIFFERENT PATTERNS. IT WAS FOUND THAT CONVENTIONAL METHODS ARE CONSERVATIVE IN EVALUATING THE STRENGTH OF CORRODED TUBULAR JOINTS OF JACKET PLATFORMS. AMONGST 3 METHODS USED FOR MODELING CORROSION, TWO HAD SIMILAR RESULTS TO EACH OTHER AND CLOSER TO REALITY. IT WAS ALSO SHOWN THAT CORROSION IS INEFFECTIVE IN BRACES.

Author Biographies

MAJID RASHIDI, AMIRKABIR UNIVERSITY OF TECHNOLOGY

MSC GRADUATE

AMIRKABIR UNIVERSITY OF TECHNOLOGY

MASOUD NAZARI, AMIRKABIR UNIVERSITY OF TECHNOLOGY

PHD CANDIDATE

AMIRKABIR UNIVERSITY OF TECHNOLOGY

MOHAMMAD REZA KHEDMATI, AMIRKABIR UNIVERSITY OF TECHNOLOGY

϶ B.SC. IN CIVIL ENGINEERING, AMIRKABIR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN, 1985-1989.
϶ M.SC. IN NAVAL ARCHITECTURE, TECHNICAL UNIVERSITY OF GDANSK, GDANSK, POLAND, 1991-1993.
϶ DR.ENG. IN STRUCTURAL ENGINEERING, HIROSHIMA UNIVERSITY, HIGASHI-HIROSHIMA, JAPAN, 1997-2000.

+ ASSOCIATE PROFESSOR, FACULTY OF MARINE TECHNOLOGY, AMIRKABIR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN, (SINCE APRIL 2007)

+ ASSISTANT PROFESSOR, FACULTY OF MARINE TECHNOLOGY, AMIRKABIR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN, (OCT. 2000- APRIL 2007)

AKBAR ESFANDIARI, AMIRKABIR UNIVERSITY OF TECHNOLOGY

ASSISTANT PROFESSOR

AMIRKABIR UNIVERSITY OF TECHNOLOGY

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Published

2016-11-29

Issue

Vol. 14 No. 02 (2017)

Section

Articles

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