Abstract
This paper presents a comparison of the plastic collapse loads from experimental in-plane bending tests on three 90 degree single un-reinforced mitred pipe bends, with the results from various 3D solid finite element models. The bending load applied reduced the bend angle and in turn, the resulting cross-sectional ovalisation led to a recognised weakening mechanism, which is only observable by testing or by including large displacement effects in the plastic finite element solution. A small displacement limit solution with an elastic-perfectly-plastic material model overestimated the collapse load by 40%. The plastic collapse finite element solution produced excellent agreement with experiment.
Original language | English |
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Pages (from-to) | 550-558 |
Number of pages | 9 |
Journal | International Journal of Pressure Vessels and Piping |
Volume | 87 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2010 |
Keywords
- mitred pipe bend
- plastic collapse
- finite element analysis
- bending
- mechanical engineering