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Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/856
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| Title: | CONSTRAINT FACTORS USED IN LIMIT ANALYSIS OF POLYETYLENE PIPES SUBMITTED TO INTERNAL PRESSURE |
| Authors: | MOUWAKEH, M.
PLUVINAGE, G.
MASRI, S. |
| Keywords: | Limit Analysis
Constraint Factor
Crack
Ultimate Pressure
Finite Element |
| Issue Date: | May-2012 |
| Publisher: | Editura Lux Libris |
| Citation: | Google Scholar |
| Series/Report no.: | NT2F12;129 - 140 |
| Abstract: | By using codes and finite element (FE) analysis, limit load solutions of pipes containing surface cracks are determined. The study covers cracks with constant crack length and depth in pipes with different diameters D: 75, 90, 110, 125 and 160 mm . The crack configurations consist of semi-elliptical surface cracks with a/D =0.067 , 0.056 , 0.045 ,0.040 and 0.031.
The cracked pipes are subjected to internal critical pressure values fromby codes ASME B31G and Choi’s formulas. Due to ductile behavior of polyethylene pipe, failure occurs plastic collapse i.e when the critical net stress reaches ultimate strength multiply by constraint factor. In this paper the constraint factor is evaluated and it=ts evolution with pipe diameter is analyzed. Three different definitions of the constraint factor based on global or local approaches are also compared |
| URI: | http://hdl.handle.net/123456789/856 |
| ISBN: | 978 – 973 – 131 – 211 – 8 |
| Appears in Collections: | NT2F12
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