Abstract
Approximate limit and plastic collapse load solutions for un-reinforced mitred bends under internal pressure and under bending are proposed in this paper, based on three-dimensional finite element analysis and approximate solutions for smooth bends. Solutions are given for single- and multi-mitred bends (mainly for single and double segmented bends) with the pipe mean radius-to-thickness ratio (r/t) ranging from r/t = 5 to r/t = 50, and the bend radius-to-mean radius ratio (R/r) from R/r = 2 to R/r = 4. Internal pressure, in-plane bending and out-of-plane bending loads are considered, but not their combination. It is found that the essential features of limit and plastic collapse loads for mitred bends are similar to those for smooth bends, and thus existing solutions for smooth elbows can be used to construct limit loads and plastic collapse for mitred bends.
Original language | English |
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Pages (from-to) | 482-494 |
Number of pages | 13 |
Journal | International Journal of Pressure Vessels and Piping |
Volume | 88 |
Issue number | 11-12 |
DOIs | |
Publication status | Published - 2011 Dec |
Keywords
- Bending
- Finite element limit analysis
- Internal pressure
- Limit load
- Mitred bends
- Plastic collapse load
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering