Revised C2 Stress Index for 90-degree Piping Elbows
- Topics:
- Mechanical and Industrial
- Tags:
- Elbow,
- Framatome ANP
- Source:
- Framatome ANP
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Overview: The purpose of this technical paper is to present a methodology that has been used to show that, based on the NB-3200 definitions; the Piping Elbow C2 stress index can be smaller than the C2 stress index currently defined in the ASME-Code. The revised C2 stress index is derived through Finite-Element elasto-plastic calculations. A conservative practical approximation is presented for the calculation of the revised C2 stress index, based on the current ASME-Code equations. This revised C2 stress index leads to a revised Piping-Elbow K2 stress index which is greater than 1.0 and which is required because the maximum stress anywhere in the elbow is greater than the newly calculated secondary stress.
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Format: PDF | Size: 97KB | Date: Jul 2002 | Pages: 8
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