Elastic fracture mechanics analysis of thick-walled curved tubing with a semi-elliptical surface crack by the boundary element method

被引:1
|
作者
Plante, K. I. [1 ]
Tan, C-L [1 ]
机构
[1] Carleton Univ, Dept Mech & Aerosp Engn, Ottawa, ON K1S 5B6, Canada
来源
关键词
Thick-walled curved tubing; elastic fracture mechanics; boundary element method; STRESS INTENSITY FACTORS; BENDING MOMENT; CYLINDERS; LOAD; PRESSURE; ELBOWS; FLAWS;
D O I
10.1243/03093247JSA494
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In this paper, the boundary element method is used to obtain the mode 1 stress intensity factors (SIFs) for a semi-elliptical crack in thick-walled curved tubing or elbow under internal pressure. A relatively wide range of geometric parameters for the tubing - the bend radius ratio, the cross-sectional radius ratio, and the angular extent of the circular bend - is considered. For each case of the curved tube geometry, a crack of semi-minor to semi-major axis ratio of 0.8, with depth varying from 20 per cent to 80 per cent of the wall thickness at the intrados is analysed. The computed values of the normalized SIFs are shown to be higher than those corresponding to a straight cylinder for the same relative crack depth and cross-sectional radius ratio. They are also found not to vary significantly along much of the crack periphery in the cases considered, increasing rapidly only as the free surface is approached. Furthermore, for a given relative crack size and location, they increase with decreasing bend radius ratio and decreasing cross-sectional radius ratio, but are, however, less sensitive to the angular extent of the elbow.
引用
收藏
页码:297 / 304
页数:8
相关论文
共 50 条
  • [31] Structural Integrity Assessment of Plates Containing Semi-elliptical Surface Cracks: Finite Element Fracture Analyses
    Wang, Shiwen
    Shard, Paul A.
    Hurst, Antony M.
    Lei, Yuebao
    [J]. 23 EUROPEAN CONFERENCE ON FRACTURE, ECF23, 2022, 42 : 441 - 448
  • [32] The Bauschinger effect on 3-D SIFs for networks of radial and longitudinally-coplanar semi-elliptical internal surface cracks in autofrettaged pressurized thick-walled cylinders
    Ma, Q.
    Levy, C.
    Perl, M.
    [J]. CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES, 2008, 29 (03): : 95 - 110
  • [33] Analysis of stress intensity factor along semi-elliptical surface crack reinforced by composite patching
    Ranji, Ahmad Rahbar
    Kaviani, Amirhossein
    [J]. STRENGTH FRACTURE AND COMPLEXITY, 2018, 11 (01) : 51 - 61
  • [34] Determination of fracture mechanics parameters J and C* by finite element and reference stress methods for a semi-elliptical flaw in a plate
    Biglari, F
    Nikbin, KM
    Goodall, IW
    Webster, GA
    [J]. INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2003, 80 (7-8) : 565 - 571
  • [35] The bauschinger effect on 3-d SIFs for networks oil radial and longitudinally-coplanar semi-elliptical internal surface cracks in autofrettaged pressurized thick-walled cylinders
    Ma, Q.
    Levy, C.
    Perl, M.
    [J]. CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES, 2008, 29 (02): : 95 - 110
  • [36] Hyper-singular boundary element method for elastic fracture mechanics analysis with large deformation
    Franco-Nava, JM
    El-Zafrany, A
    [J]. BOUNDARY ELEMENTS XXVI, 2004, 19 : 325 - 334
  • [37] Constraint characterization and fracture initiation analysis for semi-elliptical surface cracks in reactor pressure vessel
    Zheng, Y.
    Wang, G. Z.
    Tu, S. T.
    Xuan, F. Z.
    [J]. INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2023, 202
  • [38] Experimental Investigation and Finite Element Analysis of Fatigue Crack Growth in Pipes Containing a Circumferential Semi-elliptical Crack Subjected to Bending
    Shahani, A. R.
    Shodja, M. M.
    Shahhosseini, A.
    [J]. EXPERIMENTAL MECHANICS, 2010, 50 (05) : 563 - 573
  • [39] Experimental Investigation and Finite Element Analysis of Fatigue Crack Growth in Pipes Containing a Circumferential Semi-elliptical Crack Subjected to Bending
    A. R. Shahani
    M. M. Shodja
    A. Shahhosseini
    [J]. Experimental Mechanics, 2010, 50 : 563 - 573
  • [40] Three-dimensional finite element analysis of a semi-elliptical circumferential surface crack in a carbon steel pipe subjected to a bending moment
    Ligoria, SA
    Knight, GMS
    Murthy, DSR
    [J]. JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, 2005, 40 (06): : 525 - 533