The fatigue growth of a circumferential external surface flaw in a thick-walled round pipe subjected to rotary bending is simulated numerically. A three-dimensional finite element analysis is carried out to obtain the stress–strain field of the cracked structural component for any position of the flaw. The crack front is assumed to have an elliptical-arc shape during the whole propagation, as has been deduced from several experimental investigations. The results for rotary bending are compared to those for cyclic bending.
Fatigue growth simulation of part-through flaws in thick-walled pipes under rotary bending / A. CARPINTERI; BRIGHENTI R.; A. SPAGNOLI. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - 22(2000), pp. 1-9. [10.1016/S0142-1123(99)00115-2]
Fatigue growth simulation of part-through flaws in thick-walled pipes under rotary bending
CARPINTERI, Andrea;BRIGHENTI, Roberto;SPAGNOLI, Andrea
2000
Abstract
The fatigue growth of a circumferential external surface flaw in a thick-walled round pipe subjected to rotary bending is simulated numerically. A three-dimensional finite element analysis is carried out to obtain the stress–strain field of the cracked structural component for any position of the flaw. The crack front is assumed to have an elliptical-arc shape during the whole propagation, as has been deduced from several experimental investigations. The results for rotary bending are compared to those for cyclic bending.| File | Dimensione | Formato | |
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