Engineering Critical Assessments of Marine Pipelines with 3D Surface Cracks Considering Weld Mismatch

Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
View: 282

This Paper With 10 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

JR_JSMA-10-2_010

تاریخ نمایه سازی: 12 اسفند 1398

Abstract:

Offshore pipelines are usually constructed by the use of girth welds, while welds may naturally contain flaws. Currently, fracture assessment procedures such as BS 7910 are based on the stress-based methods and their responses for situations with large plastic strain is suspicious. DNV-OS-F101 with limited modifications proposes a strain-based procedure for such plastic loads. In this paper 3D nonlinear elastic-plastic finite element analyses using the ABAQUS software are performed in order to compare existing stress- and strain-based procedures beside newly strain-based method which is called CRES approach in order to improve the criteria used in current guidelines particularly at large plastic strains. It is concluded that although BS 7910 values are closer to finite element results than other methods in elastic region, but it is still conservative. In the area of large plastic strain, CRES method is very less conservative in both case of with and without internal pressure in comparison to others. The comparison of numerical simulation results with those available experimental data reveals a good agreement.                  

Keywords:

Engineering critical assessment (ECA) , Marine pipelines , Girth welds , Surface cracks , Weld mismatching , CTOD

Authors

S.M.H Sharifi

Department of Offshore Structures Engineering, Faculty of Marine Science, Petroleum University of Technology, Abadan, Iran

M Kaveh

Department of Offshore Structures Engineering, Faculty of Marine Science, Petroleum University of Technology, Abadan, Iran

H Saeidi Googarchin

Automotive Fluids and Structures Analysis Research Laboratory, School of Automotive Engineering, University of Science and Technology, Tehran, Iran

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
  • BS 7910 , 2005, Guide on Methods for Assessing the ...
  • Schwalbe K.H., 1994, The crack tip opening displacement and J ...
  • Linkens D., Formby C.L., Ainsworth R.A.A., 2000, Strain-based approach to ...
  • Wang Y., Liu M., Stephens M., Petersen R., Horsley D., ...
  • Stephens M., Petersen R., Wang Y., Gordon R., Horsley D., ...
  • Wang Y.Y., Liu M., Song Y., Horsley D., 2012, Tensile ...
  • DNV-OS-F101, 2012, Offshore Standard – Submarine Pipeline Systems, Det Norske ...
  • Raju I.S., Newman Jr J.C., 1982, Stress-intensity factors for internal ...
  • Jayadevan K.R., Østby E., Thaulow C., 2004, Fracture response of ...
  • Østby E., Jayadevan K.R., Thaulow C., 2005, Fracture response of ...
  • CSA Z662, 2007, Oil and Gas Pipeline Systems, Canadian Standards ...
  • Hibbitt, Karlsson and Serensen, 2014, ABAQUS/STANDARD, User’s Guide and Theoretical ...
  • Anderson T. L., 2005, Fracture Mechanics Fundamentals and Applications, CRC ...
  • McMeeking R., Parks D. M., 1979, On Criteria for J-Dominance ...
  • Yi D., Idapalapati S., Xiao Z. M., Kumar S. B., ...
  • Chattopadhyay J., Kushwaha H.S., Roos E., 2009, Improved integrity assessment ...
  • نمایش کامل مراجع