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Articles:2016,Vol:21,Issue(2):93-106 |
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Citation: |
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CHEN Sun-Yi, CHEN Jin, LIU Ceng-dian. Engineering Structure and Strength Design of Reducer Bend under Internal Pressure[J]. International Journal of Plant Engineering and Management, 2016, 21(2): 93-106 |
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| Engineering Structure and Strength Design of Reducer Bend under Internal Pressure |
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| CHEN Sun-Yi1, CHEN Jin2, LIU Ceng-dian2 |
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1 The Challenge Petrochemical Machinery Corporation of Maoming, Guangdong maoming 525024, P. R. China;
2 Key Lab of Pressure Systems and Safety, East China University of Science and Technology, Shanghai 200237, P. R. China |
| Abstract: |
Standard reducer bends have structural functions of both bend and reducer pipe at the same time. However, there is a lack of strength design method in the current codes.
In order to develop the strength design method of the reducer bends subjected to internal pressure, analytical formulas are re-examined. Finite element analysis and stress measurements of the reducer bend are carried out.
It is found that it is not appropriate to analyze the reducer bends by using thin membrane theory. The formula derived directly from circumferential stress formula of reducer bends under internal pressure is conservative, which is further verified by the finite element analysis results and it can thus be applied to piping design. |
| Key words:
strength design
stress analysis
reducer pipe
reducer bends
elbows
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| Received: 2016-05-20
Revised:
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| DOI: 10.13434/j.cnki.1007-4546.2016.0204 |
| Corresponding author:
Email： |
| Author description:
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References: |
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