Journal
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
Volume 88, Issue -, Pages 100-109Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2014.07.012
Keywords
Pipe bends; Out-of-plane bending moment; Internal pressure; Limit loads; Finite element analysis
Categories
Funding
- Jiangsu Natural Science Funds, China [BK2008373]
- Graduate Student Scientific Innovative Project of Jiangsu Province, China [CX10B_164Z]
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In present work, limit loads for pipe bends under combined internal pressure and out-of-plane bending moment have been investigated systematically via finite element simulation based on both small displacement analysis and large displacement analysis. By normalized methods, a wide range of non-dimensional parameters were considered and limit bending moment expression has been suggested which shows that r/t is the main factor affecting the limit bending moment. In addition, the effect of internal pressure on the limit loads was studied in detail which is significant for thin walled pipe bends. It is found that yield strain epsilon(0) has an obvious effect on limit load based on large displacement analysis. According to the finite element results, practicable engineering assessment equations of limit loads have been proposed for pipe bends under combined loads. These proposed equations are validated with experiment data and also justified to be a good choice for limit loads assessment. (C) 2014 Elsevier Ltd. All rights reserved.
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