Analysis and experiments on the plastic limit pressure of elbows |
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Authors: | Zhi-Xiang Duan Shi-Ming Shen |
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Affiliation: | College of Mechanical & Power Engineering, Nanjing University of Technology, Nanjing 210009, China |
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Abstract: | This paper discusses the plastic limit pressure of elbows without defects and with local thinned area in the extrados. Finite element analysis (FEA) and experiments have been used. The results of FEA show that the limit load of elbows under internal pressure increases with increasing wall thickness and bend radius of the elbow. The results are consistent with the calculated results by the Goodall formula, the maximum error is 6.58%. By data fitting of FEA, an empirical formula for the limit load of elbows with local thinned area in the extrados has been proposed, which is validated by experiments. |
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Keywords: | Elbow Limit load Finite element analysis Local thinned area Experiment |
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