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Recent content by MSL68
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Equivalent Tubesheet Thermal Analysis
When performing an FEA on a heat exchanger, one can simplify the tubesheet and tube bundle to equivalent solids, and either Sec. III A-8000 or Sec VIII Div 2 Annex 5-E can be used to determine equivalent elastic properties (E* and v*). However, there is no mention of any equivalent thermal...- MSL68
- Thread
- Replies: 0
- Forum: Boiler and Pressure Vessel engineering
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ASME Local Membrane Stress Distance
@TGS4, thanks for the clarification. I believe I was thinking too much about it. Perhaps I'm wrong here, but it could be more thought of as "the shell's ability to withstand local stresses", in which case, it makes sense the dimensions should be of the shell in consideration, and not the...- MSL68
- Post #6
- Forum: Boiler and Pressure Vessel engineering
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ASME Local Membrane Stress Distance
ASME BPVC (Section III Appendix XIII-3100, or in older Code versions, this is described in the Definitions section) says "A stressed region may be considered local if the distance over which the membrane stress intensity exceeds 1.1S does not extend in the meridional direction more than...- MSL68
- Thread
- Replies: 6
- Forum: Boiler and Pressure Vessel engineering
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Stress Classification - Cylindrical Shell Membrane Stress Near Opening
According to the stress classification table in ASME Sec. III Appendix XIII, the membrane stress due to internal pressure at any location in a cylindrical shell is classified as Pm. It also states that gross discontinuities are not considered for this categorization. Intuitively, one would...- MSL68
- Thread
- Replies: 2
- Forum: Boiler and Pressure Vessel engineering
