Shakedown and limit analysis of 90° pipe bends under internal pressure,cyclic in-plane bending and cyclic thermal loading |
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Authors: | Haofeng Chen James Ure Tianbai Li Weihang Chen Donald Mackenzie |
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Affiliation: | Department of Mechanical Engineering, University of Strathclyde, Glasgow G1 1XJ, United Kingdom |
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Abstract: | The Linear Matching Method is used to create the shakedown limit and limit load interaction curves of 90° pipe bends for a range of bend factors. Two load cases are considered i) internal pressure and in-plane bending (which includes opening, closing and reversed bending) and ii) internal pressure and a cyclic through wall temperature difference giving rise to thermal stresses. The effects of the ratios of bend radius to pipe mean radius (R/r) and mean radius to wall thickness (r/t) on the limit load and shakedown behaviour are presented. |
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