Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels. Staat, M. International Journal of Pressure Vessels and Piping, 82(3):217-225, 3, 2005.
Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels [link]Website  doi  abstract   bibtex   
Limit loads can be calculated with the finite element method (FEM) for any component, defect geometry, and loading. FEM suggests that published long crack limit formulae for axial defects under-estimate the burst pressure for internal surface defects in thick pipes while limit loads are not conservative for deep cracks and for pressure loaded crack-faces. Very deep cracks have a residual strength, which is modelled by a global collapse load. These observations are combined to derive new analytical local and global collapse loads. The global collapse loads are close to FEM limit analyses for all crack dimensions.
@article{
 title = {Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels},
 type = {article},
 year = {2005},
 keywords = {Axially cracked pipe,Global and local collapse,Limit analysis,Pressure loaded crack-face},
 pages = {217-225},
 volume = {82},
 websites = {http://linkinghub.elsevier.com/retrieve/pii/S0308016104002042},
 month = {3},
 id = {3842d40a-dffb-3d2c-bea8-2f1e48c2c979},
 created = {2014-06-02T18:47:19.000Z},
 accessed = {2014-08-18},
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 abstract = {Limit loads can be calculated with the finite element method (FEM) for any component, defect geometry, and loading. FEM suggests that published long crack limit formulae for axial defects under-estimate the burst pressure for internal surface defects in thick pipes while limit loads are not conservative for deep cracks and for pressure loaded crack-faces. Very deep cracks have a residual strength, which is modelled by a global collapse load. These observations are combined to derive new analytical local and global collapse loads. The global collapse loads are close to FEM limit analyses for all crack dimensions.},
 bibtype = {article},
 author = {Staat, Manfred},
 doi = {10.1016/j.ijpvp.2004.07.022},
 journal = {International Journal of Pressure Vessels and Piping},
 number = {3}
}

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